diff src/term.c @ 32670:695b50472e85

Fix line endings issue
author Christian Brabandt <cb@256bit.org>
date Mon, 26 Jun 2023 13:13:12 +0200
parents 448aef880252
children 161ae1985d81
line wrap: on
line diff
--- a/src/term.c
+++ b/src/term.c
@@ -1,7519 +1,7519 @@
-/* vi:set ts=8 sts=4 sw=4 noet:
- *
- * VIM - Vi IMproved	by Bram Moolenaar
- *
- * Do ":help uganda"  in Vim to read copying and usage conditions.
- * Do ":help credits" in Vim to see a list of people who contributed.
- * See README.txt for an overview of the Vim source code.
- */
-/*
- *
- * term.c: functions for controlling the terminal
- *
- * primitive termcap support for Amiga and Win32 included
- *
- * NOTE: padding and variable substitution is not performed,
- * when compiling without HAVE_TGETENT, we use tputs() and tgoto() dummies.
- */
-
-/*
- * Some systems have a prototype for tgetstr() with (char *) instead of
- * (char **). This define removes that prototype. We include our own prototype
- * below.
- */
-#define tgetstr tgetstr_defined_wrong
-
-#include "vim.h"
-
-#ifdef HAVE_TGETENT
-# ifdef HAVE_TERMIOS_H
-#  include <termios.h>	    // seems to be required for some Linux
-# endif
-# ifdef HAVE_TERMCAP_H
-#  include <termcap.h>
-# endif
-
-/*
- * A few linux systems define outfuntype in termcap.h to be used as the third
- * argument for tputs().
- */
-# if defined(VMS) || defined(AMIGA)
-#  define TPUTSFUNCAST (void (*)(unsigned int))
-# else
-#  ifdef HAVE_OUTFUNTYPE
-#   define TPUTSFUNCAST (outfuntype)
-#  else
-#   define TPUTSFUNCAST (int (*)(int))
-#  endif
-# endif
-#endif
-
-#undef tgetstr
-
-// start of keys that are not directly used by Vim but can be mapped
-#define BT_EXTRA_KEYS	0x101
-
-static void parse_builtin_tcap(char_u *s);
-static void gather_termleader(void);
-#ifdef FEAT_TERMRESPONSE
-static void req_codes_from_term(void);
-static void req_more_codes_from_term(void);
-static void got_code_from_term(char_u *code, int len);
-static void check_for_codes_from_term(void);
-#endif
-static void del_termcode_idx(int idx);
-static int find_term_bykeys(char_u *src);
-static int term_is_builtin(char_u *name);
-static int term_7to8bit(char_u *p);
-static void accept_modifiers_for_function_keys(void);
-
-    // Change this to "if 1" to debug what happens with termresponse.
-#  if 0
-#   define DEBUG_TERMRESPONSE
-static void log_tr(const char *fmt, ...) ATTRIBUTE_FORMAT_PRINTF(1, 2);
-#   define LOG_TR(msg) log_tr msg
-#  else
-#   define LOG_TR(msg) do { /**/ } while (0)
-#  endif
-
-#ifdef HAVE_TGETENT
-static char *invoke_tgetent(char_u *, char_u *);
-
-/*
- * Here is our own prototype for tgetstr(), any prototypes from the include
- * files have been disabled by the define at the start of this file.
- */
-char		*tgetstr(char *, char **);
-#endif
-
-typedef enum {
-    STATUS_GET,		// send request when switching to RAW mode
-    STATUS_SENT,	// did send request, checking for response
-    STATUS_GOT,		// received response
-    STATUS_FAIL		// timed out
-} request_progress_T;
-
-typedef struct {
-    request_progress_T	    tr_progress;
-    time_t		    tr_start;	// when request was sent, -1 for never
-} termrequest_T;
-
-# define TERMREQUEST_INIT {STATUS_GET, -1}
-
-// Request Terminal Version status:
-static termrequest_T crv_status = TERMREQUEST_INIT;
-
-// Request Cursor position report:
-static termrequest_T u7_status = TERMREQUEST_INIT;
-
-// Request xterm compatibility check:
-static termrequest_T xcc_status = TERMREQUEST_INIT;
-
-#ifdef FEAT_TERMRESPONSE
-# ifdef FEAT_TERMINAL
-// Request foreground color report:
-static termrequest_T rfg_status = TERMREQUEST_INIT;
-static int fg_r = 0;
-static int fg_g = 0;
-static int fg_b = 0;
-static int bg_r = 255;
-static int bg_g = 255;
-static int bg_b = 255;
-# endif
-
-// Request background color report:
-static termrequest_T rbg_status = TERMREQUEST_INIT;
-
-// Request cursor blinking mode report:
-static termrequest_T rbm_status = TERMREQUEST_INIT;
-
-// Request cursor style report:
-static termrequest_T rcs_status = TERMREQUEST_INIT;
-
-// Request window's position report:
-static termrequest_T winpos_status = TERMREQUEST_INIT;
-
-static termrequest_T *all_termrequests[] = {
-    &crv_status,
-    &u7_status,
-    &xcc_status,
-#  ifdef FEAT_TERMINAL
-    &rfg_status,
-#  endif
-    &rbg_status,
-    &rbm_status,
-    &rcs_status,
-    &winpos_status,
-    NULL
-};
-
-// The t_8u code may default to a value but get reset when the term response is
-// received.  To avoid redrawing too often, only redraw when t_8u is not reset
-// and it was supposed to be written.  Unless t_8u was set explicitly.
-// FALSE -> don't output t_8u yet
-// MAYBE -> tried outputting t_8u while FALSE
-// OK    -> can write t_8u
-int write_t_8u_state = FALSE;
-#endif
-
-#ifdef HAVE_TGETENT
-/*
- * Don't declare these variables if termcap.h contains them.
- * Autoconf checks if these variables should be declared extern (not all
- * systems have them).
- * Some versions define ospeed to be speed_t, but that is incompatible with
- * BSD, where ospeed is short and speed_t is long.
- */
-# ifndef HAVE_OSPEED
-#  ifdef OSPEED_EXTERN
-extern short ospeed;
-#   else
-short ospeed;
-#   endif
-# endif
-# ifndef HAVE_UP_BC_PC
-#  ifdef UP_BC_PC_EXTERN
-extern char *UP, *BC, PC;
-#  else
-char *UP, *BC, PC;
-#  endif
-# endif
-
-# define TGETSTR(s, p)	vim_tgetstr((s), (p))
-# define TGETENT(b, t)	tgetent((char *)(b), (char *)(t))
-static char_u *vim_tgetstr(char *s, char_u **pp);
-#endif // HAVE_TGETENT
-
-static int  detected_8bit = FALSE;	// detected 8-bit terminal
-
-#if (defined(UNIX) || defined(VMS))
-static int focus_state = MAYBE; // TRUE if the Vim window has focus
-#endif
-
-#ifdef FEAT_TERMRESPONSE
-// When the cursor shape was detected these values are used:
-// 1: block, 2: underline, 3: vertical bar
-static int initial_cursor_shape = 0;
-
-// The blink flag from the style response may be inverted from the actual
-// blinking state, xterm XORs the flags.
-static int initial_cursor_shape_blink = FALSE;
-
-// The blink flag from the blinking-cursor mode response
-static int initial_cursor_blink = FALSE;
-#endif
-
-/*
- * The builtin termcap entries.
- *
- * The entries are also included when HAVE_TGETENT is defined, the system
- * termcap may be incomplete and a few Vim-specific entries are added.
- *
- * When HAVE_TGETENT is defined, the builtin entries can be accessed with
- * "builtin_amiga", "builtin_ansi", "builtin_debug", etc.
- *
- * Each termcap is a list of tcap_entry_T.  See parse_builtin_tcap() for all
- * details.
- *
- * Entries marked with "guessed" may be wrong.
- */
-typedef struct
-{
-    int		bt_entry;   // either a KS_xxx code (>= 0), or a K_xxx code.
-    char	*bt_string; // value
-} tcap_entry_T;
-
-/*
- * Standard ANSI terminal, default for Unix.
- */
-static tcap_entry_T builtin_ansi[] = {
-    {(int)KS_CE,	"\033[K"},
-    {(int)KS_AL,	"\033[L"},
-#  ifdef TERMINFO
-    {(int)KS_CAL,	"\033[%p1%dL"},
-#  else
-    {(int)KS_CAL,	"\033[%dL"},
-#  endif
-    {(int)KS_DL,	"\033[M"},
-#  ifdef TERMINFO
-    {(int)KS_CDL,	"\033[%p1%dM"},
-#  else
-    {(int)KS_CDL,	"\033[%dM"},
-#  endif
-    {(int)KS_CL,	"\033[H\033[2J"},
-    {(int)KS_ME,	"\033[0m"},
-    {(int)KS_MR,	"\033[7m"},
-    {(int)KS_MS,	"y"},
-    {(int)KS_UT,	"y"},		// guessed
-    {(int)KS_LE,	"\b"},
-#  ifdef TERMINFO
-    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
-#  else
-    {(int)KS_CM,	"\033[%i%d;%dH"},
-#  endif
-#  ifdef TERMINFO
-    {(int)KS_CRI,	"\033[%p1%dC"},
-#  else
-    {(int)KS_CRI,	"\033[%dC"},
-#  endif
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * VT320 is working as an ANSI terminal compatible DEC terminal.
- * (it covers VT1x0, VT2x0 and VT3x0 up to VT320 on VMS as well)
- * TODO:- rewrite ESC[ codes to CSI
- *      - keyboard languages (CSI ? 26 n)
- */
-static tcap_entry_T builtin_vt320[] = {
-    {(int)KS_CE,	"\033[K"},
-    {(int)KS_AL,	"\033[L"},
-#  ifdef TERMINFO
-    {(int)KS_CAL,	"\033[%p1%dL"},
-#  else
-    {(int)KS_CAL,	"\033[%dL"},
-#  endif
-    {(int)KS_DL,	"\033[M"},
-#  ifdef TERMINFO
-    {(int)KS_CDL,	"\033[%p1%dM"},
-#  else
-    {(int)KS_CDL,	"\033[%dM"},
-#  endif
-    {(int)KS_CL,	"\033[H\033[2J"},
-    {(int)KS_CD,	"\033[J"},
-    {(int)KS_CCO,	"8"},			// allow 8 colors
-    {(int)KS_ME,	"\033[0m"},
-    {(int)KS_MR,	"\033[7m"},
-    {(int)KS_MD,	"\033[1m"},  // bold mode
-    {(int)KS_SE,	"\033[22m"},// normal mode
-    {(int)KS_UE,	"\033[24m"},// exit underscore mode
-    {(int)KS_US,	"\033[4m"},  // underscore mode
-    {(int)KS_CZH,	"\033[34;43m"},  // italic mode: blue text on yellow
-    {(int)KS_CZR,	"\033[0m"},	    // italic mode end
-    {(int)KS_CAB,	"\033[4%dm"},	    // set background color (ANSI)
-    {(int)KS_CAF,	"\033[3%dm"},	    // set foreground color (ANSI)
-    {(int)KS_CSB,	"\033[102;%dm"},	// set screen background color
-    {(int)KS_CSF,	"\033[101;%dm"},	// set screen foreground color
-    {(int)KS_MS,	"y"},
-    {(int)KS_UT,	"y"},
-    {(int)KS_XN,	"y"},
-    {(int)KS_LE,	"\b"},
-#  ifdef TERMINFO
-    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
-#  else
-    {(int)KS_CM,	"\033[%i%d;%dH"},
-#  endif
-#  ifdef TERMINFO
-    {(int)KS_CRI,	"\033[%p1%dC"},
-#  else
-    {(int)KS_CRI,	"\033[%dC"},
-#  endif
-    {K_UP,		"\033[A"},
-    {K_DOWN,		"\033[B"},
-    {K_RIGHT,		"\033[C"},
-    {K_LEFT,		"\033[D"},
-    // Note: cursor key sequences for application cursor mode are omitted,
-    // because they interfere with typed commands: <Esc>OA.
-    {K_F1,		"\033[11~"},
-    {K_F2,		"\033[12~"},
-    {K_F3,		"\033[13~"},
-    {K_F4,		"\033[14~"},
-    {K_F5,		"\033[15~"},
-    {K_F6,		"\033[17~"},
-    {K_F7,		"\033[18~"},
-    {K_F8,		"\033[19~"},
-    {K_F9,		"\033[20~"},
-    {K_F10,		"\033[21~"},
-    {K_F11,		"\033[23~"},
-    {K_F12,		"\033[24~"},
-    {K_F13,		"\033[25~"},
-    {K_F14,		"\033[26~"},
-    {K_F15,		"\033[28~"},	// Help
-    {K_F16,		"\033[29~"},	// Select
-    {K_F17,		"\033[31~"},
-    {K_F18,		"\033[32~"},
-    {K_F19,		"\033[33~"},
-    {K_F20,		"\033[34~"},
-    {K_INS,		"\033[2~"},
-    {K_DEL,		"\033[3~"},
-    {K_HOME,		"\033[1~"},
-    {K_END,		"\033[4~"},
-    {K_PAGEUP,		"\033[5~"},
-    {K_PAGEDOWN,	"\033[6~"},
-    // These sequences starting with <Esc> O may interfere with what the user
-    // is typing.  Remove these if that bothers you.
-    {K_KPLUS,		"\033Ok"},	// keypad plus
-    {K_KMINUS,		"\033Om"},	// keypad minus
-    {K_KDIVIDE,		"\033Oo"},	// keypad /
-    {K_KMULTIPLY,	"\033Oj"},	// keypad *
-    {K_KENTER,		"\033OM"},	// keypad Enter
-    {K_K0,		"\033Op"},	// keypad 0
-    {K_K1,		"\033Oq"},	// keypad 1
-    {K_K2,		"\033Or"},	// keypad 2
-    {K_K3,		"\033Os"},	// keypad 3
-    {K_K4,		"\033Ot"},	// keypad 4
-    {K_K5,		"\033Ou"},	// keypad 5
-    {K_K6,		"\033Ov"},	// keypad 6
-    {K_K7,		"\033Ow"},	// keypad 7
-    {K_K8,		"\033Ox"},	// keypad 8
-    {K_K9,		"\033Oy"},	// keypad 9
-    {K_BS,		"\x7f"},	// for some reason 0177 doesn't work
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * Ordinary vt52
- */
-static tcap_entry_T builtin_vt52[] = {
-    {(int)KS_CE,	"\033K"},
-    {(int)KS_CD,	"\033J"},
-#  ifdef TERMINFO
-    {(int)KS_CM,	"\033Y%p1%' '%+%c%p2%' '%+%c"},
-#  else
-    {(int)KS_CM,	"\033Y%+ %+ "},
-#  endif
-    {(int)KS_LE,	"\b"},
-    {(int)KS_SR,	"\033I"},
-    {(int)KS_AL,	"\033L"},
-    {(int)KS_DL,	"\033M"},
-    {K_UP,		"\033A"},
-    {K_DOWN,		"\033B"},
-    {K_LEFT,		"\033D"},
-    {K_RIGHT,		"\033C"},
-    {K_F1,		"\033P"},
-    {K_F2,		"\033Q"},
-    {K_F3,		"\033R"},
-    {(int)KS_CL,	"\033H\033J"},
-    {(int)KS_MS,	"y"},
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * Builtin xterm with Vim-specific entries.
- */
-static tcap_entry_T builtin_xterm[] = {
-    {(int)KS_CE,	"\033[K"},
-    {(int)KS_AL,	"\033[L"},
-#  ifdef TERMINFO
-    {(int)KS_CAL,	"\033[%p1%dL"},
-#  else
-    {(int)KS_CAL,	"\033[%dL"},
-#  endif
-    {(int)KS_DL,	"\033[M"},
-#  ifdef TERMINFO
-    {(int)KS_CDL,	"\033[%p1%dM"},
-#  else
-    {(int)KS_CDL,	"\033[%dM"},
-#  endif
-#  ifdef TERMINFO
-    {(int)KS_CS,	"\033[%i%p1%d;%p2%dr"},
-#  else
-    {(int)KS_CS,	"\033[%i%d;%dr"},
-#  endif
-    {(int)KS_CL,	"\033[H\033[2J"},
-    {(int)KS_CD,	"\033[J"},
-    {(int)KS_ME,	"\033[m"},
-    {(int)KS_MR,	"\033[7m"},
-    {(int)KS_MD,	"\033[1m"},
-    {(int)KS_UE,	"\033[m"},
-    {(int)KS_US,	"\033[4m"},
-    {(int)KS_STE,	"\033[29m"},
-    {(int)KS_STS,	"\033[9m"},
-    {(int)KS_MS,	"y"},
-    {(int)KS_UT,	"y"},
-    {(int)KS_LE,	"\b"},
-    {(int)KS_VI,	"\033[?25l"},
-    {(int)KS_VE,	"\033[?25h"},
-    {(int)KS_VS,	"\033[?12h"},
-    {(int)KS_CVS,	"\033[?12l"},
-#  ifdef TERMINFO
-    {(int)KS_CSH,	"\033[%p1%d q"},
-#  else
-    {(int)KS_CSH,	"\033[%d q"},
-#  endif
-    {(int)KS_CRC,	"\033[?12$p"},
-    {(int)KS_CRS,	"\033P$q q\033\\"},
-#  ifdef TERMINFO
-    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
-#  else
-    {(int)KS_CM,	"\033[%i%d;%dH"},
-#  endif
-    {(int)KS_SR,	"\033M"},
-#  ifdef TERMINFO
-    {(int)KS_CRI,	"\033[%p1%dC"},
-#  else
-    {(int)KS_CRI,	"\033[%dC"},
-#  endif
-    {(int)KS_KS,	"\033[?1h\033="},
-    {(int)KS_KE,	"\033[?1l\033>"},
-#  ifdef FEAT_XTERM_SAVE
-    {(int)KS_TI,	"\0337\033[?47h"},
-    {(int)KS_TE,	"\033[?47l\0338"},
-#  endif
-    // These are now under control of the 'keyprotocol' option, see
-    // "builtin_mok2".
-    // {(int)KS_CTI,	"\033[>4;2m"},
-    // {(int)KS_CRK,	"\033[?4m"},
-    // {(int)KS_CTE,	"\033[>4;m"},
-    {(int)KS_CIS,	"\033]1;"},
-    {(int)KS_CIE,	"\007"},
-    {(int)KS_TS,	"\033]2;"},
-    {(int)KS_FS,	"\007"},
-    {(int)KS_CSC,	"\033]12;"},
-    {(int)KS_CEC,	"\007"},
-#  ifdef TERMINFO
-    {(int)KS_CWS,	"\033[8;%p1%d;%p2%dt"},
-    {(int)KS_CWP,	"\033[3;%p1%d;%p2%dt"},
-    {(int)KS_CGP,	"\033[13t"},
-#  else
-    {(int)KS_CWS,	"\033[8;%d;%dt"},
-    {(int)KS_CWP,	"\033[3;%d;%dt"},
-    {(int)KS_CGP,	"\033[13t"},
-#  endif
-    {(int)KS_CRV,	"\033[>c"},
-    {(int)KS_CXM,	"\033[?1006;1000%?%p1%{1}%=%th%el%;"},
-    {(int)KS_RFG,	"\033]10;?\007"},
-    {(int)KS_RBG,	"\033]11;?\007"},
-    {(int)KS_U7,	"\033[6n"},
-    {(int)KS_CAU,	"\033[58;5;%dm"},
-    {(int)KS_CBE,	"\033[?2004h"},
-    {(int)KS_CBD,	"\033[?2004l"},
-    {(int)KS_CST,	"\033[22;2t"},
-    {(int)KS_CRT,	"\033[23;2t"},
-    {(int)KS_SSI,	"\033[22;1t"},
-    {(int)KS_SRI,	"\033[23;1t"},
-#  if (defined(UNIX) || defined(VMS))
-    {(int)KS_FD,	"\033[?1004l"},
-    {(int)KS_FE,	"\033[?1004h"},
-#  endif
-
-    {K_UP,		"\033O*A"},
-    {K_DOWN,		"\033O*B"},
-    {K_RIGHT,		"\033O*C"},
-    {K_LEFT,		"\033O*D"},
-    // An extra set of cursor keys for vt100 mode
-    {K_XUP,		"\033[@;*A"},	// Esc [ A or Esc [ 1 ; A
-    {K_XDOWN,		"\033[@;*B"},	// Esc [ B or Esc [ 1 ; B
-    {K_XRIGHT,		"\033[@;*C"},	// Esc [ C or Esc [ 1 ; C
-    {K_XLEFT,		"\033[@;*D"},	// Esc [ D or Esc [ 1 ; D
-    // An extra set of function keys for vt100 mode
-    {K_XF1,		"\033O*P"},
-    {K_XF2,		"\033O*Q"},
-    {K_XF3,		"\033O*R"},
-    {K_XF4,		"\033O*S"},
-    {K_F1,		"\033[11;*~"},
-    {K_F2,		"\033[12;*~"},
-    {K_F3,		"\033[13;*~"},
-    {K_F4,		"\033[14;*~"},
-    {K_F5,		"\033[15;*~"},
-    {K_F6,		"\033[17;*~"},
-    {K_F7,		"\033[18;*~"},
-    {K_F8,		"\033[19;*~"},
-    {K_F9,		"\033[20;*~"},
-    {K_F10,		"\033[21;*~"},
-    {K_F11,		"\033[23;*~"},
-    {K_F12,		"\033[24;*~"},
-    {K_S_TAB,		"\033[Z"},
-    {K_HELP,		"\033[28;*~"},
-    {K_UNDO,		"\033[26;*~"},
-    {K_INS,		"\033[2;*~"},
-    {K_HOME,		"\033[@;*H"},    // Esc [ H  or Esc 1 ; H
-    // {K_S_HOME,		"\033O2H"},
-    // {K_C_HOME,		"\033O5H"},
-    {K_KHOME,		"\033[1;*~"},
-    {K_XHOME,		"\033O*H"},	// other Home
-    {K_ZHOME,		"\033[7;*~"},	// other Home
-    {K_END,		"\033[@;*F"},	// Esc [ F or Esc 1 ; F
-    // {K_S_END,		"\033O2F"},
-    // {K_C_END,		"\033O5F"},
-    {K_KEND,		"\033[4;*~"},
-    {K_XEND,		"\033O*F"},	// other End
-    {K_ZEND,		"\033[8;*~"},
-    {K_PAGEUP,		"\033[5;*~"},
-    {K_PAGEDOWN,	"\033[6;*~"},
-    {K_KPLUS,		"\033O*k"},     // keypad plus
-    {K_KMINUS,		"\033O*m"},     // keypad minus
-    {K_KDIVIDE,		"\033O*o"},     // keypad /
-    {K_KMULTIPLY,	"\033O*j"},     // keypad *
-    {K_KENTER,		"\033O*M"},     // keypad Enter
-    {K_KPOINT,		"\033O*n"},     // keypad .
-    {K_K0,		"\033O*p"},     // keypad 0
-    {K_K1,		"\033O*q"},     // keypad 1
-    {K_K2,		"\033O*r"},     // keypad 2
-    {K_K3,		"\033O*s"},     // keypad 3
-    {K_K4,		"\033O*t"},     // keypad 4
-    {K_K5,		"\033O*u"},     // keypad 5
-    {K_K6,		"\033O*v"},     // keypad 6
-    {K_K7,		"\033O*w"},     // keypad 7
-    {K_K8,		"\033O*x"},     // keypad 8
-    {K_K9,		"\033O*y"},     // keypad 9
-    {K_KDEL,		"\033[3;*~"}, // keypad Del
-    {K_PS,		"\033[200~"}, // paste start
-    {K_PE,		"\033[201~"}, // paste end
-
-    {BT_EXTRA_KEYS,   ""},
-    {TERMCAP2KEY('k', '0'), "\033[10;*~"}, // F0
-    {TERMCAP2KEY('F', '3'), "\033[25;*~"}, // F13
-    // F14 and F15 are missing, because they send the same codes as the undo
-    // and help key, although they don't work on all keyboards.
-    {TERMCAP2KEY('F', '6'), "\033[29;*~"}, // F16
-    {TERMCAP2KEY('F', '7'), "\033[31;*~"}, // F17
-    {TERMCAP2KEY('F', '8'), "\033[32;*~"}, // F18
-    {TERMCAP2KEY('F', '9'), "\033[33;*~"}, // F19
-    {TERMCAP2KEY('F', 'A'), "\033[34;*~"}, // F20
-
-    {TERMCAP2KEY('F', 'B'), "\033[42;*~"}, // F21
-    {TERMCAP2KEY('F', 'C'), "\033[43;*~"}, // F22
-    {TERMCAP2KEY('F', 'D'), "\033[44;*~"}, // F23
-    {TERMCAP2KEY('F', 'E'), "\033[45;*~"}, // F24
-    {TERMCAP2KEY('F', 'F'), "\033[46;*~"}, // F25
-    {TERMCAP2KEY('F', 'G'), "\033[47;*~"}, // F26
-    {TERMCAP2KEY('F', 'H'), "\033[48;*~"}, // F27
-    {TERMCAP2KEY('F', 'I'), "\033[49;*~"}, // F28
-    {TERMCAP2KEY('F', 'J'), "\033[50;*~"}, // F29
-    {TERMCAP2KEY('F', 'K'), "\033[51;*~"}, // F30
-
-    {TERMCAP2KEY('F', 'L'), "\033[52;*~"}, // F31
-    {TERMCAP2KEY('F', 'M'), "\033[53;*~"}, // F32
-    {TERMCAP2KEY('F', 'N'), "\033[54;*~"}, // F33
-    {TERMCAP2KEY('F', 'O'), "\033[55;*~"}, // F34
-    {TERMCAP2KEY('F', 'P'), "\033[56;*~"}, // F35
-    {TERMCAP2KEY('F', 'Q'), "\033[57;*~"}, // F36
-    {TERMCAP2KEY('F', 'R'), "\033[58;*~"}, // F37
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * Additions for using modifyOtherKeys level 2.  Same as what is used for
- * xterm.
- */
-static tcap_entry_T builtin_mok2[] = {
-    // t_TI enables modifyOtherKeys level 2
-    {(int)KS_CTI,	"\033[>4;2m"},
-
-    // XTQMODKEYS was added in xterm version 377: "CSI ? 4 m" which should
-    // return "{lead} > 4 ; Pv m".  Before version 377 we expect it to have no
-    // effect.
-    {(int)KS_CRK,	"\033[?4m"},
-
-    // t_TE disables modifyOtherKeys
-    {(int)KS_CTE,	"\033[>4;m"},
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * Additions for using the Kitty keyboard protocol.
- */
-static tcap_entry_T builtin_kitty[] = {
-    // t_TI enables the kitty keyboard protocol.
-    {(int)KS_CTI,	"\033[=1;1u"},
-
-    // t_RK requests the kitty keyboard protocol state
-    {(int)KS_CRK,	"\033[?u"},
-
-    // t_TE also disables modifyOtherKeys, because t_TI from xterm may already
-    // have been used.
-    {(int)KS_CTE,	"\033[>4;m\033[=0;1u"},
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-#ifdef FEAT_TERMGUICOLORS
-/*
- * Additions for using the RGB colors
- */
-static tcap_entry_T builtin_rgb[] = {
-    // These are printf strings, not terminal codes.
-    {(int)KS_8F,	"\033[38;2;%lu;%lu;%lum"},
-    {(int)KS_8B,	"\033[48;2;%lu;%lu;%lum"},
-    {(int)KS_8U,	"\033[58;2;%lu;%lu;%lum"},
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-#endif
-
-/*
- * iris-ansi for Silicon Graphics machines.
- */
-static tcap_entry_T builtin_iris_ansi[] = {
-    {(int)KS_CE,	"\033[K"},
-    {(int)KS_CD,	"\033[J"},
-    {(int)KS_AL,	"\033[L"},
-#  ifdef TERMINFO
-    {(int)KS_CAL,	"\033[%p1%dL"},
-#  else
-    {(int)KS_CAL,	"\033[%dL"},
-#  endif
-    {(int)KS_DL,	"\033[M"},
-#  ifdef TERMINFO
-    {(int)KS_CDL,	"\033[%p1%dM"},
-#  else
-    {(int)KS_CDL,	"\033[%dM"},
-#  endif
-#if 0	// The scroll region is not working as Vim expects.
-#  ifdef TERMINFO
-    {(int)KS_CS,	"\033[%i%p1%d;%p2%dr"},
-#  else
-    {(int)KS_CS,	"\033[%i%d;%dr"},
-#  endif
-#endif
-    {(int)KS_CL,	"\033[H\033[2J"},
-    {(int)KS_VE,	"\033[9/y\033[12/y"},	// These aren't documented
-    {(int)KS_VS,	"\033[10/y\033[=1h\033[=2l"}, // These aren't documented
-    {(int)KS_TI,	"\033[=6h"},
-    {(int)KS_TE,	"\033[=6l"},
-    {(int)KS_SE,	"\033[21;27m"},
-    {(int)KS_SO,	"\033[1;7m"},
-    {(int)KS_ME,	"\033[m"},
-    {(int)KS_MR,	"\033[7m"},
-    {(int)KS_MD,	"\033[1m"},
-    {(int)KS_CCO,	"8"},			// allow 8 colors
-    {(int)KS_CZH,	"\033[3m"},		// italic mode on
-    {(int)KS_CZR,	"\033[23m"},		// italic mode off
-    {(int)KS_US,	"\033[4m"},		// underline on
-    {(int)KS_UE,	"\033[24m"},		// underline off
-#  ifdef TERMINFO
-    {(int)KS_CAB,	"\033[4%p1%dm"},    // set background color (ANSI)
-    {(int)KS_CAF,	"\033[3%p1%dm"},    // set foreground color (ANSI)
-    {(int)KS_CSB,	"\033[102;%p1%dm"}, // set screen background color
-    {(int)KS_CSF,	"\033[101;%p1%dm"}, // set screen foreground color
-#  else
-    {(int)KS_CAB,	"\033[4%dm"},	    // set background color (ANSI)
-    {(int)KS_CAF,	"\033[3%dm"},	    // set foreground color (ANSI)
-    {(int)KS_CSB,	"\033[102;%dm"},    // set screen background color
-    {(int)KS_CSF,	"\033[101;%dm"},    // set screen foreground color
-#  endif
-    {(int)KS_MS,	"y"},		// guessed
-    {(int)KS_UT,	"y"},		// guessed
-    {(int)KS_LE,	"\b"},
-#  ifdef TERMINFO
-    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
-#  else
-    {(int)KS_CM,	"\033[%i%d;%dH"},
-#  endif
-    {(int)KS_SR,	"\033M"},
-#  ifdef TERMINFO
-    {(int)KS_CRI,	"\033[%p1%dC"},
-#  else
-    {(int)KS_CRI,	"\033[%dC"},
-#  endif
-    {(int)KS_CIS,	"\033P3.y"},
-    {(int)KS_CIE,	"\234"},    // ST "String Terminator"
-    {(int)KS_TS,	"\033P1.y"},
-    {(int)KS_FS,	"\234"},    // ST "String Terminator"
-#  ifdef TERMINFO
-    {(int)KS_CWS,	"\033[203;%p1%d;%p2%d/y"},
-    {(int)KS_CWP,	"\033[205;%p1%d;%p2%d/y"},
-#  else
-    {(int)KS_CWS,	"\033[203;%d;%d/y"},
-    {(int)KS_CWP,	"\033[205;%d;%d/y"},
-#  endif
-    {K_UP,		"\033[A"},
-    {K_DOWN,		"\033[B"},
-    {K_LEFT,		"\033[D"},
-    {K_RIGHT,		"\033[C"},
-    {K_S_UP,		"\033[161q"},
-    {K_S_DOWN,		"\033[164q"},
-    {K_S_LEFT,		"\033[158q"},
-    {K_S_RIGHT,		"\033[167q"},
-    {K_F1,		"\033[001q"},
-    {K_F2,		"\033[002q"},
-    {K_F3,		"\033[003q"},
-    {K_F4,		"\033[004q"},
-    {K_F5,		"\033[005q"},
-    {K_F6,		"\033[006q"},
-    {K_F7,		"\033[007q"},
-    {K_F8,		"\033[008q"},
-    {K_F9,		"\033[009q"},
-    {K_F10,		"\033[010q"},
-    {K_F11,		"\033[011q"},
-    {K_F12,		"\033[012q"},
-    {K_S_F1,		"\033[013q"},
-    {K_S_F2,		"\033[014q"},
-    {K_S_F3,		"\033[015q"},
-    {K_S_F4,		"\033[016q"},
-    {K_S_F5,		"\033[017q"},
-    {K_S_F6,		"\033[018q"},
-    {K_S_F7,		"\033[019q"},
-    {K_S_F8,		"\033[020q"},
-    {K_S_F9,		"\033[021q"},
-    {K_S_F10,		"\033[022q"},
-    {K_S_F11,		"\033[023q"},
-    {K_S_F12,		"\033[024q"},
-    {K_INS,		"\033[139q"},
-    {K_HOME,		"\033[H"},
-    {K_END,		"\033[146q"},
-    {K_PAGEUP,		"\033[150q"},
-    {K_PAGEDOWN,	"\033[154q"},
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * These codes are valid when nansi.sys or equivalent has been installed.
- * Function keys on a PC are preceded with a NUL. These are converted into
- * K_NUL '\316' in mch_inchar(), because we cannot handle NULs in key codes.
- * CTRL-arrow is used instead of SHIFT-arrow.
- */
-static tcap_entry_T builtin_pcansi[] = {
-    {(int)KS_DL,	"\033[M"},
-    {(int)KS_AL,	"\033[L"},
-    {(int)KS_CE,	"\033[K"},
-    {(int)KS_CL,	"\033[2J"},
-    {(int)KS_ME,	"\033[0m"},
-    {(int)KS_MR,	"\033[5m"},	// reverse: black on lightgrey
-    {(int)KS_MD,	"\033[1m"},	// bold: white text
-    {(int)KS_SE,	"\033[0m"},	// standout end
-    {(int)KS_SO,	"\033[31m"},	// standout: white on blue
-    {(int)KS_CZH,	"\033[34;43m"},	// italic mode: blue text on yellow
-    {(int)KS_CZR,	"\033[0m"},	// italic mode end
-    {(int)KS_US,	"\033[36;41m"},	// underscore mode: cyan text on red
-    {(int)KS_UE,	"\033[0m"},	// underscore mode end
-    {(int)KS_CCO,	"8"},		// allow 8 colors
-#  ifdef TERMINFO
-    {(int)KS_CAB,	"\033[4%p1%dm"},// set background color
-    {(int)KS_CAF,	"\033[3%p1%dm"},// set foreground color
-#  else
-    {(int)KS_CAB,	"\033[4%dm"},	// set background color
-    {(int)KS_CAF,	"\033[3%dm"},	// set foreground color
-#  endif
-    {(int)KS_OP,	"\033[0m"},	// reset colors
-    {(int)KS_MS,	"y"},
-    {(int)KS_UT,	"y"},		// guessed
-    {(int)KS_LE,	"\b"},
-#  ifdef TERMINFO
-    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
-#  else
-    {(int)KS_CM,	"\033[%i%d;%dH"},
-#  endif
-#  ifdef TERMINFO
-    {(int)KS_CRI,	"\033[%p1%dC"},
-#  else
-    {(int)KS_CRI,	"\033[%dC"},
-#  endif
-    {K_UP,		"\316H"},
-    {K_DOWN,		"\316P"},
-    {K_LEFT,		"\316K"},
-    {K_RIGHT,		"\316M"},
-    {K_S_LEFT,		"\316s"},
-    {K_S_RIGHT,		"\316t"},
-    {K_F1,		"\316;"},
-    {K_F2,		"\316<"},
-    {K_F3,		"\316="},
-    {K_F4,		"\316>"},
-    {K_F5,		"\316?"},
-    {K_F6,		"\316@"},
-    {K_F7,		"\316A"},
-    {K_F8,		"\316B"},
-    {K_F9,		"\316C"},
-    {K_F10,		"\316D"},
-    {K_F11,		"\316\205"},	// guessed
-    {K_F12,		"\316\206"},	// guessed
-    {K_S_F1,		"\316T"},
-    {K_S_F2,		"\316U"},
-    {K_S_F3,		"\316V"},
-    {K_S_F4,		"\316W"},
-    {K_S_F5,		"\316X"},
-    {K_S_F6,		"\316Y"},
-    {K_S_F7,		"\316Z"},
-    {K_S_F8,		"\316["},
-    {K_S_F9,		"\316\\"},
-    {K_S_F10,		"\316]"},
-    {K_S_F11,		"\316\207"},	// guessed
-    {K_S_F12,		"\316\210"},	// guessed
-    {K_INS,		"\316R"},
-    {K_DEL,		"\316S"},
-    {K_HOME,		"\316G"},
-    {K_END,		"\316O"},
-    {K_PAGEDOWN,	"\316Q"},
-    {K_PAGEUP,		"\316I"},
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * These codes are valid for the Win32 Console.  The entries that start with
- * ESC | are translated into console calls in os_win32.c.  The function keys
- * are also translated in os_win32.c.
- */
-static tcap_entry_T builtin_win32[] = {
-    {(int)KS_CE,	"\033|K"},	// clear to end of line
-    {(int)KS_AL,	"\033|L"},	// add new blank line
-#  ifdef TERMINFO
-    {(int)KS_CAL,	"\033|%p1%dL"},	// add number of new blank lines
-#  else
-    {(int)KS_CAL,	"\033|%dL"},	// add number of new blank lines
-#  endif
-    {(int)KS_DL,	"\033|M"},	// delete line
-#  ifdef TERMINFO
-    {(int)KS_CDL,	"\033|%p1%dM"},	// delete number of lines
-    {(int)KS_CSV,	"\033|%p1%d;%p2%dV"},
-#  else
-    {(int)KS_CDL,	"\033|%dM"},	// delete number of lines
-    {(int)KS_CSV,	"\033|%d;%dV"},
-#  endif
-    {(int)KS_CL,	"\033|J"},	// clear screen
-    {(int)KS_CD,	"\033|j"},	// clear to end of display
-    {(int)KS_VI,	"\033|v"},	// cursor invisible
-    {(int)KS_VE,	"\033|V"},	// cursor visible
-
-    {(int)KS_ME,	"\033|0m"},	// normal
-    {(int)KS_MR,	"\033|112m"},	// reverse: black on lightgray
-    {(int)KS_MD,	"\033|15m"},	// bold: white on black
-#if 1
-    {(int)KS_SO,	"\033|31m"},	// standout: white on blue
-    {(int)KS_SE,	"\033|0m"},	// standout end
-#else
-    {(int)KS_SO,	"\033|F"},	// standout: high intensity
-    {(int)KS_SE,	"\033|f"},	// standout end
-#endif
-    {(int)KS_CZH,	"\033|225m"},	// italic: blue text on yellow
-    {(int)KS_CZR,	"\033|0m"},	// italic end
-    {(int)KS_US,	"\033|67m"},	// underscore: cyan text on red
-    {(int)KS_UE,	"\033|0m"},	// underscore end
-    {(int)KS_CCO,	"16"},		// allow 16 colors
-#  ifdef TERMINFO
-    {(int)KS_CAB,	"\033|%p1%db"},	// set background color
-    {(int)KS_CAF,	"\033|%p1%df"},	// set foreground color
-#  else
-    {(int)KS_CAB,	"\033|%db"},	// set background color
-    {(int)KS_CAF,	"\033|%df"},	// set foreground color
-#  endif
-
-    {(int)KS_MS,	"y"},		// save to move cur in reverse mode
-    {(int)KS_UT,	"y"},
-    {(int)KS_XN,	"y"},
-    {(int)KS_LE,	"\b"},
-#  ifdef TERMINFO
-    {(int)KS_CM,	"\033|%i%p1%d;%p2%dH"}, // cursor motion
-#  else
-    {(int)KS_CM,	"\033|%i%d;%dH"}, // cursor motion
-#  endif
-    {(int)KS_VB,	"\033|B"},	// visual bell
-    {(int)KS_TI,	"\033|S"},	// put terminal in termcap mode
-    {(int)KS_TE,	"\033|E"},	// out of termcap mode
-#  ifdef TERMINFO
-    {(int)KS_CS,	"\033|%i%p1%d;%p2%dr"}, // scroll region
-#  else
-    {(int)KS_CS,	"\033|%i%d;%dr"}, // scroll region
-#  endif
-
-    {K_UP,		"\316H"},
-    {K_DOWN,		"\316P"},
-    {K_LEFT,		"\316K"},
-    {K_RIGHT,		"\316M"},
-    {K_S_UP,		"\316\304"},
-    {K_S_DOWN,		"\316\317"},
-    {K_S_LEFT,		"\316\311"},
-    {K_C_LEFT,		"\316s"},
-    {K_S_RIGHT,		"\316\313"},
-    {K_C_RIGHT,		"\316t"},
-    {K_S_TAB,		"\316\017"},
-    {K_F1,		"\316;"},
-    {K_F2,		"\316<"},
-    {K_F3,		"\316="},
-    {K_F4,		"\316>"},
-    {K_F5,		"\316?"},
-    {K_F6,		"\316@"},
-    {K_F7,		"\316A"},
-    {K_F8,		"\316B"},
-    {K_F9,		"\316C"},
-    {K_F10,		"\316D"},
-    {K_F11,		"\316\205"},
-    {K_F12,		"\316\206"},
-    {K_S_F1,		"\316T"},
-    {K_S_F2,		"\316U"},
-    {K_S_F3,		"\316V"},
-    {K_S_F4,		"\316W"},
-    {K_S_F5,		"\316X"},
-    {K_S_F6,		"\316Y"},
-    {K_S_F7,		"\316Z"},
-    {K_S_F8,		"\316["},
-    {K_S_F9,		"\316\\"},
-    {K_S_F10,		"\316]"},
-    {K_S_F11,		"\316\207"},
-    {K_S_F12,		"\316\210"},
-    {K_INS,		"\316R"},
-    {K_DEL,		"\316S"},
-    {K_HOME,		"\316G"},
-    {K_S_HOME,		"\316\302"},
-    {K_C_HOME,		"\316w"},
-    {K_END,		"\316O"},
-    {K_S_END,		"\316\315"},
-    {K_C_END,		"\316u"},
-    {K_PAGEDOWN,	"\316Q"},
-    {K_PAGEUP,		"\316I"},
-    {K_KPLUS,		"\316N"},
-    {K_KMINUS,		"\316J"},
-    {K_KMULTIPLY,	"\316\067"},
-    {K_K0,		"\316\332"},
-    {K_K1,		"\316\336"},
-    {K_K2,		"\316\342"},
-    {K_K3,		"\316\346"},
-    {K_K4,		"\316\352"},
-    {K_K5,		"\316\356"},
-    {K_K6,		"\316\362"},
-    {K_K7,		"\316\366"},
-    {K_K8,		"\316\372"},
-    {K_K9,		"\316\376"},
-    {K_BS,		"\316x"},
-    {K_S_BS,		"\316y"},
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-#if defined(FEAT_GUI)
-/*
- * GUI uses made-up codes, only used inside Vim.
- */
-static tcap_entry_T builtin_gui[] = {
-    {(int)KS_CE,	"\033|$"},
-    {(int)KS_AL,	"\033|i"},
-# ifdef TERMINFO
-    {(int)KS_CAL,	"\033|%p1%dI"},
-# else
-    {(int)KS_CAL,	"\033|%dI"},
-# endif
-    {(int)KS_DL,	"\033|d"},
-# ifdef TERMINFO
-    {(int)KS_CDL,	"\033|%p1%dD"},
-    {(int)KS_CS,	"\033|%p1%d;%p2%dR"},
-    {(int)KS_CSV,	"\033|%p1%d;%p2%dV"},
-# else
-    {(int)KS_CDL,	"\033|%dD"},
-    {(int)KS_CS,	"\033|%d;%dR"},
-    {(int)KS_CSV,	"\033|%d;%dV"},
-# endif
-    {(int)KS_CL,	"\033|C"},
-			// attributes switched on with 'h', off with * 'H'
-    {(int)KS_ME,	"\033|31H"}, // HL_ALL
-    {(int)KS_MR,	"\033|1h"},   // HL_INVERSE
-    {(int)KS_MD,	"\033|2h"},   // HL_BOLD
-    {(int)KS_SE,	"\033|16H"}, // HL_STANDOUT
-    {(int)KS_SO,	"\033|16h"}, // HL_STANDOUT
-    {(int)KS_UE,	"\033|8H"},   // HL_UNDERLINE
-    {(int)KS_US,	"\033|8h"},   // HL_UNDERLINE
-    {(int)KS_UCE,	"\033|8C"},   // HL_UNDERCURL
-    {(int)KS_UCS,	"\033|8c"},   // HL_UNDERCURL
-    {(int)KS_STE,	"\033|4C"},   // HL_STRIKETHROUGH
-    {(int)KS_STS,	"\033|4c"},   // HL_STRIKETHROUGH
-    {(int)KS_CZR,	"\033|4H"},   // HL_ITALIC
-    {(int)KS_CZH,	"\033|4h"},   // HL_ITALIC
-    {(int)KS_VB,	"\033|f"},
-    {(int)KS_MS,	"y"},
-    {(int)KS_UT,	"y"},
-    {(int)KS_XN,	"y"},
-    {(int)KS_LE,	"\b"},		// cursor-left = BS
-    {(int)KS_ND,	"\014"},	// cursor-right = CTRL-L
-# ifdef TERMINFO
-    {(int)KS_CM,	"\033|%p1%d;%p2%dM"},
-# else
-    {(int)KS_CM,	"\033|%d;%dM"},
-# endif
-	// there are no key sequences here, the GUI sequences are recognized
-	// in check_termcode()
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-#endif
-
-/*
- * Amiga console window, default for Amiga.
- */
-static tcap_entry_T builtin_amiga[] = {
-    {(int)KS_CE,	"\033[K"},
-    {(int)KS_CD,	"\033[J"},
-    {(int)KS_AL,	"\033[L"},
-#  ifdef TERMINFO
-    {(int)KS_CAL,	"\033[%p1%dL"},
-#  else
-    {(int)KS_CAL,	"\033[%dL"},
-#  endif
-    {(int)KS_DL,	"\033[M"},
-#  ifdef TERMINFO
-    {(int)KS_CDL,	"\033[%p1%dM"},
-#  else
-    {(int)KS_CDL,	"\033[%dM"},
-#  endif
-    {(int)KS_CL,	"\014"},
-    {(int)KS_VI,	"\033[0 p"},
-    {(int)KS_VE,	"\033[1 p"},
-    {(int)KS_ME,	"\033[0m"},
-    {(int)KS_MR,	"\033[7m"},
-    {(int)KS_MD,	"\033[1m"},
-    {(int)KS_SE,	"\033[0m"},
-    {(int)KS_SO,	"\033[33m"},
-    {(int)KS_US,	"\033[4m"},
-    {(int)KS_UE,	"\033[0m"},
-    {(int)KS_CZH,	"\033[3m"},
-    {(int)KS_CZR,	"\033[0m"},
-#if defined(__amigaos4__) || defined(__MORPHOS__) || defined(__AROS__)
-    {(int)KS_CCO,	"8"},		// allow 8 colors
-#  ifdef TERMINFO
-    {(int)KS_CAB,	"\033[4%p1%dm"},// set background color
-    {(int)KS_CAF,	"\033[3%p1%dm"},// set foreground color
-#  else
-    {(int)KS_CAB,	"\033[4%dm"},	// set background color
-    {(int)KS_CAF,	"\033[3%dm"},	// set foreground color
-#  endif
-    {(int)KS_OP,	"\033[m"},	// reset colors
-#endif
-    {(int)KS_MS,	"y"},
-    {(int)KS_UT,	"y"},		// guessed
-    {(int)KS_LE,	"\b"},
-#  ifdef TERMINFO
-    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
-#  else
-    {(int)KS_CM,	"\033[%i%d;%dH"},
-#  endif
-#if defined(__MORPHOS__)
-    {(int)KS_SR,	"\033M"},
-#endif
-#  ifdef TERMINFO
-    {(int)KS_CRI,	"\033[%p1%dC"},
-#  else
-    {(int)KS_CRI,	"\033[%dC"},
-#  endif
-    {K_UP,		"\233A"},
-    {K_DOWN,		"\233B"},
-    {K_LEFT,		"\233D"},
-    {K_RIGHT,		"\233C"},
-    {K_S_UP,		"\233T"},
-    {K_S_DOWN,		"\233S"},
-    {K_S_LEFT,		"\233 A"},
-    {K_S_RIGHT,		"\233 @"},
-    {K_S_TAB,		"\233Z"},
-    {K_F1,		"\233\060~"},// some compilers don't dig "\2330"
-    {K_F2,		"\233\061~"},
-    {K_F3,		"\233\062~"},
-    {K_F4,		"\233\063~"},
-    {K_F5,		"\233\064~"},
-    {K_F6,		"\233\065~"},
-    {K_F7,		"\233\066~"},
-    {K_F8,		"\233\067~"},
-    {K_F9,		"\233\070~"},
-    {K_F10,		"\233\071~"},
-    {K_S_F1,		"\233\061\060~"},
-    {K_S_F2,		"\233\061\061~"},
-    {K_S_F3,		"\233\061\062~"},
-    {K_S_F4,		"\233\061\063~"},
-    {K_S_F5,		"\233\061\064~"},
-    {K_S_F6,		"\233\061\065~"},
-    {K_S_F7,		"\233\061\066~"},
-    {K_S_F8,		"\233\061\067~"},
-    {K_S_F9,		"\233\061\070~"},
-    {K_S_F10,		"\233\061\071~"},
-    {K_HELP,		"\233?~"},
-    {K_INS,		"\233\064\060~"},	// 101 key keyboard
-    {K_PAGEUP,		"\233\064\061~"},	// 101 key keyboard
-    {K_PAGEDOWN,	"\233\064\062~"},	// 101 key keyboard
-    {K_HOME,		"\233\064\064~"},	// 101 key keyboard
-    {K_END,		"\233\064\065~"},	// 101 key keyboard
-
-    {BT_EXTRA_KEYS,	""},
-    {TERMCAP2KEY('#', '2'), "\233\065\064~"},	// shifted home key
-    {TERMCAP2KEY('#', '3'), "\233\065\060~"},	// shifted insert key
-    {TERMCAP2KEY('*', '7'), "\233\065\065~"},	// shifted end key
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * The most minimal terminal: only clear screen and cursor positioning.
- */
-static tcap_entry_T builtin_dumb[] = {
-    {(int)KS_CL,	"\014"},
-#ifdef TERMINFO
-    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
-#else
-    {(int)KS_CM,	"\033[%i%d;%dH"},
-#endif
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * Terminal used for debugging.
- */
-static tcap_entry_T builtin_debug[] = {
-    {(int)KS_CE,	"[CE]"},
-    {(int)KS_CD,	"[CD]"},
-    {(int)KS_AL,	"[AL]"},
-#  ifdef TERMINFO
-    {(int)KS_CAL,	"[CAL%p1%d]"},
-#  else
-    {(int)KS_CAL,	"[CAL%d]"},
-#  endif
-    {(int)KS_DL,	"[DL]"},
-#  ifdef TERMINFO
-    {(int)KS_CDL,	"[CDL%p1%d]"},
-#  else
-    {(int)KS_CDL,	"[CDL%d]"},
-#  endif
-#  ifdef TERMINFO
-    {(int)KS_CS,	"[%p1%dCS%p2%d]"},
-#  else
-    {(int)KS_CS,	"[%dCS%d]"},
-#  endif
-#  ifdef TERMINFO
-    {(int)KS_CSV,	"[%p1%dCSV%p2%d]"},
-#  else
-    {(int)KS_CSV,	"[%dCSV%d]"},
-#  endif
-#  ifdef TERMINFO
-    {(int)KS_CAB,	"[CAB%p1%d]"},
-    {(int)KS_CAF,	"[CAF%p1%d]"},
-    {(int)KS_CSB,	"[CSB%p1%d]"},
-    {(int)KS_CSF,	"[CSF%p1%d]"},
-#  else
-    {(int)KS_CAB,	"[CAB%d]"},
-    {(int)KS_CAF,	"[CAF%d]"},
-    {(int)KS_CSB,	"[CSB%d]"},
-    {(int)KS_CSF,	"[CSF%d]"},
-#  endif
-    {(int)KS_CAU,	"[CAU%d]"},
-    {(int)KS_OP,	"[OP]"},
-    {(int)KS_LE,	"[LE]"},
-    {(int)KS_CL,	"[CL]"},
-    {(int)KS_VI,	"[VI]"},
-    {(int)KS_VE,	"[VE]"},
-    {(int)KS_VS,	"[VS]"},
-    {(int)KS_ME,	"[ME]"},
-    {(int)KS_MR,	"[MR]"},
-    {(int)KS_MB,	"[MB]"},
-    {(int)KS_MD,	"[MD]"},
-    {(int)KS_SE,	"[SE]"},
-    {(int)KS_SO,	"[SO]"},
-    {(int)KS_UE,	"[UE]"},
-    {(int)KS_US,	"[US]"},
-    {(int)KS_UCE,	"[UCE]"},
-    {(int)KS_UCS,	"[UCS]"},
-    {(int)KS_USS,	"[USS]"},
-    {(int)KS_DS,	"[DS]"},
-    {(int)KS_CDS,	"[CDS]"},
-    {(int)KS_STE,	"[STE]"},
-    {(int)KS_STS,	"[STS]"},
-    {(int)KS_MS,	"[MS]"},
-    {(int)KS_UT,	"[UT]"},
-    {(int)KS_XN,	"[XN]"},
-#  ifdef TERMINFO
-    {(int)KS_CM,	"[%p1%dCM%p2%d]"},
-#  else
-    {(int)KS_CM,	"[%dCM%d]"},
-#  endif
-    {(int)KS_SR,	"[SR]"},
-#  ifdef TERMINFO
-    {(int)KS_CRI,	"[CRI%p1%d]"},
-#  else
-    {(int)KS_CRI,	"[CRI%d]"},
-#  endif
-    {(int)KS_VB,	"[VB]"},
-    {(int)KS_KS,	"[KS]"},
-    {(int)KS_KE,	"[KE]"},
-    {(int)KS_TI,	"[TI]"},
-    {(int)KS_TE,	"[TE]"},
-    {(int)KS_CIS,	"[CIS]"},
-    {(int)KS_CIE,	"[CIE]"},
-    {(int)KS_CSC,	"[CSC]"},
-    {(int)KS_CEC,	"[CEC]"},
-    {(int)KS_TS,	"[TS]"},
-    {(int)KS_FS,	"[FS]"},
-#  ifdef TERMINFO
-    {(int)KS_CWS,	"[%p1%dCWS%p2%d]"},
-    {(int)KS_CWP,	"[%p1%dCWP%p2%d]"},
-#  else
-    {(int)KS_CWS,	"[%dCWS%d]"},
-    {(int)KS_CWP,	"[%dCWP%d]"},
-#  endif
-    {(int)KS_CRV,	"[CRV]"},
-    {(int)KS_CXM,	"[CXM]"},
-    {(int)KS_U7,	"[U7]"},
-    {(int)KS_RFG,	"[RFG]"},
-    {(int)KS_RBG,	"[RBG]"},
-    {K_UP,		"[KU]"},
-    {K_DOWN,		"[KD]"},
-    {K_LEFT,		"[KL]"},
-    {K_RIGHT,		"[KR]"},
-    {K_XUP,		"[xKU]"},
-    {K_XDOWN,		"[xKD]"},
-    {K_XLEFT,		"[xKL]"},
-    {K_XRIGHT,		"[xKR]"},
-    {K_S_UP,		"[S-KU]"},
-    {K_S_DOWN,		"[S-KD]"},
-    {K_S_LEFT,		"[S-KL]"},
-    {K_C_LEFT,		"[C-KL]"},
-    {K_S_RIGHT,		"[S-KR]"},
-    {K_C_RIGHT,		"[C-KR]"},
-    {K_F1,		"[F1]"},
-    {K_XF1,		"[xF1]"},
-    {K_F2,		"[F2]"},
-    {K_XF2,		"[xF2]"},
-    {K_F3,		"[F3]"},
-    {K_XF3,		"[xF3]"},
-    {K_F4,		"[F4]"},
-    {K_XF4,		"[xF4]"},
-    {K_F5,		"[F5]"},
-    {K_F6,		"[F6]"},
-    {K_F7,		"[F7]"},
-    {K_F8,		"[F8]"},
-    {K_F9,		"[F9]"},
-    {K_F10,		"[F10]"},
-    {K_F11,		"[F11]"},
-    {K_F12,		"[F12]"},
-    {K_S_F1,		"[S-F1]"},
-    {K_S_XF1,		"[S-xF1]"},
-    {K_S_F2,		"[S-F2]"},
-    {K_S_XF2,		"[S-xF2]"},
-    {K_S_F3,		"[S-F3]"},
-    {K_S_XF3,		"[S-xF3]"},
-    {K_S_F4,		"[S-F4]"},
-    {K_S_XF4,		"[S-xF4]"},
-    {K_S_F5,		"[S-F5]"},
-    {K_S_F6,		"[S-F6]"},
-    {K_S_F7,		"[S-F7]"},
-    {K_S_F8,		"[S-F8]"},
-    {K_S_F9,		"[S-F9]"},
-    {K_S_F10,		"[S-F10]"},
-    {K_S_F11,		"[S-F11]"},
-    {K_S_F12,		"[S-F12]"},
-    {K_HELP,		"[HELP]"},
-    {K_UNDO,		"[UNDO]"},
-    {K_BS,		"[BS]"},
-    {K_INS,		"[INS]"},
-    {K_KINS,		"[KINS]"},
-    {K_DEL,		"[DEL]"},
-    {K_KDEL,		"[KDEL]"},
-    {K_HOME,		"[HOME]"},
-    {K_S_HOME,		"[C-HOME]"},
-    {K_C_HOME,		"[C-HOME]"},
-    {K_KHOME,		"[KHOME]"},
-    {K_XHOME,		"[XHOME]"},
-    {K_ZHOME,		"[ZHOME]"},
-    {K_END,		"[END]"},
-    {K_S_END,		"[C-END]"},
-    {K_C_END,		"[C-END]"},
-    {K_KEND,		"[KEND]"},
-    {K_XEND,		"[XEND]"},
-    {K_ZEND,		"[ZEND]"},
-    {K_PAGEUP,		"[PAGEUP]"},
-    {K_PAGEDOWN,	"[PAGEDOWN]"},
-    {K_KPAGEUP,		"[KPAGEUP]"},
-    {K_KPAGEDOWN,	"[KPAGEDOWN]"},
-    {K_MOUSE,		"[MOUSE]"},
-    {K_KPLUS,		"[KPLUS]"},
-    {K_KMINUS,		"[KMINUS]"},
-    {K_KDIVIDE,		"[KDIVIDE]"},
-    {K_KMULTIPLY,	"[KMULTIPLY]"},
-    {K_KENTER,		"[KENTER]"},
-    {K_KPOINT,		"[KPOINT]"},
-    {K_PS,		"[PASTE-START]"},
-    {K_PE,		"[PASTE-END]"},
-    {K_K0,		"[K0]"},
-    {K_K1,		"[K1]"},
-    {K_K2,		"[K2]"},
-    {K_K3,		"[K3]"},
-    {K_K4,		"[K4]"},
-    {K_K5,		"[K5]"},
-    {K_K6,		"[K6]"},
-    {K_K7,		"[K7]"},
-    {K_K8,		"[K8]"},
-    {K_K9,		"[K9]"},
-
-    {(int)KS_NAME,	NULL}  // end marker
-};
-
-/*
- * List of builtin terminals.
- */
-typedef struct {
-    char	    *bitc_name;	    // name, such as "xterm"
-    tcap_entry_T    *bitc_table;    // table with entries for bitc_name
-} builtin_tcap_T;
-
-builtin_tcap_T builtin_terminals[] = {
-    // Unix and Generic
-    {"ansi",	    builtin_ansi},
-    {"vt320",	    builtin_vt320},
-    {"vt52",	    builtin_vt52},
-    {"xterm",	    builtin_xterm},
-    {"iris-ansi",   builtin_iris_ansi},
-
-    // MS-Windows
-    {"pcansi",	    builtin_pcansi},
-    {"win32",	    builtin_win32},
-
-    // Other systems
-#if defined(FEAT_GUI)
-    {"gui",	    builtin_gui},
-#endif
-    {"amiga",	    builtin_amiga},
-    {"dumb",	    builtin_dumb},
-    {"debug",	    builtin_debug},
-
-    {NULL,	    NULL},  // end marker
-};
-
-#if defined(FEAT_TERMGUICOLORS) || defined(PROTO)
-    static guicolor_T
-termgui_mch_get_color(char_u *name)
-{
-    return gui_get_color_cmn(name);
-}
-
-    guicolor_T
-termgui_get_color(char_u *name)
-{
-    guicolor_T	t;
-
-    if (*name == NUL)
-	return INVALCOLOR;
-    t = termgui_mch_get_color(name);
-
-    if (t == INVALCOLOR)
-	semsg(_(e_cannot_allocate_color_str), name);
-    return t;
-}
-
-    guicolor_T
-termgui_mch_get_rgb(guicolor_T color)
-{
-    return color;
-}
-#endif
-
-/*
- * DEFAULT_TERM is used, when no terminal is specified with -T option or $TERM.
- */
-#ifdef AMIGA
-# define DEFAULT_TERM	(char_u *)"amiga"
-#endif
-
-#ifdef MSWIN
-# define DEFAULT_TERM	(char_u *)"win32"
-#endif
-
-#if defined(UNIX)
-# define DEFAULT_TERM	(char_u *)"ansi"
-#endif
-
-#ifdef VMS
-# define DEFAULT_TERM	(char_u *)"vt320"
-#endif
-
-#ifdef __HAIKU__
-# undef DEFAULT_TERM
-# define DEFAULT_TERM	(char_u *)"xterm"
-#endif
-
-#ifndef DEFAULT_TERM
-# define DEFAULT_TERM	(char_u *)"dumb"
-#endif
-
-/*
- * Term_strings contains currently used terminal output strings.
- * It is initialized with the default values by parse_builtin_tcap().
- * The values can be changed by setting the option with the same name.
- */
-char_u *(term_strings[(int)KS_LAST + 1]);
-
-static int	need_gather = FALSE;	    // need to fill termleader[]
-static char_u	termleader[256 + 1];	    // for check_termcode()
-#ifdef FEAT_TERMRESPONSE
-static int	check_for_codes = FALSE;    // check for key code response
-#endif
-
-/*
- * Structure and table to store terminal features that can be detected by
- * querying the terminal.  Either by inspecting the termresponse or a more
- * specific request.  Besides this there are:
- * t_colors - number of colors supported
- */
-typedef struct {
-    char    *tpr_name;
-    int	    tpr_set_by_termresponse;
-    int	    tpr_status;
-} termprop_T;
-
-// Values for tpr_status.
-#define TPR_UNKNOWN	    'u'
-#define TPR_YES		    'y'
-#define TPR_NO		    'n'
-#define TPR_MOUSE_XTERM     'x'	// use "xterm" for 'ttymouse'
-#define TPR_MOUSE_XTERM2    '2'	// use "xterm2" for 'ttymouse'
-#define TPR_MOUSE_SGR	    's'	// use "sgr" for 'ttymouse'
-
-// can request the cursor style without messing up the display
-#define TPR_CURSOR_STYLE	    0
-// can request the cursor blink mode without messing up the display
-#define TPR_CURSOR_BLINK	    1
-// can set the underline color with t_8u without resetting other colors
-#define TPR_UNDERLINE_RGB	    2
-// mouse support - TPR_MOUSE_XTERM, TPR_MOUSE_XTERM2 or TPR_MOUSE_SGR
-#define TPR_MOUSE		    3
-// term response indicates kitty
-#define TPR_KITTY		    4
-// table size
-#define TPR_COUNT		    5
-
-static termprop_T term_props[TPR_COUNT];
-
-/*
- * Initialize the term_props table.
- * When "all" is FALSE only set those that are detected from the version
- * response.
- */
-    void
-init_term_props(int all)
-{
-    int i;
-
-    term_props[TPR_CURSOR_STYLE].tpr_name = "cursor_style";
-    term_props[TPR_CURSOR_STYLE].tpr_set_by_termresponse = FALSE;
-    term_props[TPR_CURSOR_BLINK].tpr_name = "cursor_blink_mode";
-    term_props[TPR_CURSOR_BLINK].tpr_set_by_termresponse = FALSE;
-    term_props[TPR_UNDERLINE_RGB].tpr_name = "underline_rgb";
-    term_props[TPR_UNDERLINE_RGB].tpr_set_by_termresponse = TRUE;
-    term_props[TPR_MOUSE].tpr_name = "mouse";
-    term_props[TPR_MOUSE].tpr_set_by_termresponse = TRUE;
-    term_props[TPR_KITTY].tpr_name = "kitty";
-    term_props[TPR_KITTY].tpr_set_by_termresponse = FALSE;
-
-    for (i = 0; i < TPR_COUNT; ++i)
-	if (all || term_props[i].tpr_set_by_termresponse)
-	    term_props[i].tpr_status = TPR_UNKNOWN;
-}
-
-#if defined(FEAT_EVAL) || defined(PROTO)
-    void
-f_terminalprops(typval_T *argvars UNUSED, typval_T *rettv)
-{
-# ifdef FEAT_TERMRESPONSE
-    int i;
-# endif
-
-    if (rettv_dict_alloc(rettv) == FAIL)
-	return;
-# ifdef FEAT_TERMRESPONSE
-    for (i = 0; i < TPR_COUNT; ++i)
-    {
-	char_u	value[2];
-
-	value[0] = term_props[i].tpr_status;
-	value[1] = NUL;
-	dict_add_string(rettv->vval.v_dict, term_props[i].tpr_name, value);
-    }
-# endif
-}
-#endif
-
-/*
- * Find the builtin termcap entries for "term".
- * This also recognizes similar names.  E.g. "xterm-256color" finds the "xterm"
- * entry.
- * Returns NULL when "term" is not found.
- */
-    static tcap_entry_T *
-find_builtin_term(char_u *term)
-{
-    for (int i = 0; ; ++i)
-    {
-	char_u *name = (char_u *)builtin_terminals[i].bitc_name;
-	if (name == NULL)  // end marker
-	    break;
-#ifdef UNIX
-	if (STRCMP(name, "iris-ansi") == 0 && vim_is_iris(term))
-	    return builtin_terminals[i].bitc_table;
-	if (STRCMP(name, "xterm") == 0 && vim_is_xterm(term))
-	    return builtin_terminals[i].bitc_table;
-#endif
-#ifdef VMS
-	if (STRCMP(name, "vt320") == 0 && vim_is_vt300(term))
-	    return builtin_terminals[i].bitc_table;
-#endif
-	if (STRCMP(term, name) == 0)
-	    return builtin_terminals[i].bitc_table;
-    }
-    return NULL;
-}
-
-/*
- * Apply entries from a builtin termcap.
- */
-    static void
-apply_builtin_tcap(char_u *term, tcap_entry_T *entries, int overwrite)
-{
-    int term_8bit = term_is_8bit(term);
-
-    for (tcap_entry_T *p = entries;
-	      p->bt_entry != (int)KS_NAME && p->bt_entry != BT_EXTRA_KEYS; ++p)
-    {
-	if ((int)p->bt_entry >= 0)	// KS_xx entry
-	{
-	    // Only set the value if it wasn't set yet or "overwrite" is TRUE.
-	    if (term_strings[p->bt_entry] == NULL
-		    || term_strings[p->bt_entry] == empty_option
-		    || overwrite)
-	    {
-#ifdef FEAT_EVAL
-		int opt_idx = -1;
-#endif
-		// 8bit terminal: use CSI instead of <Esc>[
-		if (term_8bit && term_7to8bit((char_u *)p->bt_string) != 0)
-		{
-		    char_u  *s, *t;
-
-		    s = vim_strsave((char_u *)p->bt_string);
-		    if (s != NULL)
-		    {
-			for (t = s; *t; ++t)
-			    if (term_7to8bit(t))
-			    {
-				*t = term_7to8bit(t);
-				STRMOVE(t + 1, t + 2);
-			    }
-			term_strings[p->bt_entry] = s;
-#ifdef FEAT_EVAL
-			opt_idx =
-#endif
-				  set_term_option_alloced(
-						   &term_strings[p->bt_entry]);
-		    }
-		}
-		else
-		{
-		    term_strings[p->bt_entry] = (char_u *)p->bt_string;
-#ifdef FEAT_EVAL
-		    opt_idx = get_term_opt_idx(&term_strings[p->bt_entry]);
-#endif
-		}
-#ifdef FEAT_EVAL
-		set_term_option_sctx_idx(NULL, opt_idx);
-#endif
-	    }
-	}
-	else
-	{
-	    char_u  name[2];
-	    name[0] = KEY2TERMCAP0((int)p->bt_entry);
-	    name[1] = KEY2TERMCAP1((int)p->bt_entry);
-	    if (find_termcode(name) == NULL || overwrite)
-		add_termcode(name, (char_u *)p->bt_string, term_8bit);
-	}
-    }
-}
-
-/*
- * Parsing of the builtin termcap entries.
- * Caller should check if "term" is a valid builtin terminal name.
- * The terminal's name is not set, as this is already done in termcapinit().
- */
-    static void
-parse_builtin_tcap(char_u *term)
-{
-    tcap_entry_T *entries = find_builtin_term(term);
-    if (entries != NULL)
-	apply_builtin_tcap(term, entries, FALSE);
-}
-
-/*
- * Set number of colors.
- * Store it as a number in t_colors.
- * Store it as a string in T_CCO (using nr_colors[]).
- */
-    void
-set_color_count(int nr)
-{
-    char_u	nr_colors[20];		// string for number of colors
-
-    t_colors = nr;
-    if (t_colors > 1)
-	sprintf((char *)nr_colors, "%d", t_colors);
-    else
-	*nr_colors = NUL;
-    set_string_option_direct((char_u *)"t_Co", -1, nr_colors, OPT_FREE, 0);
-}
-
-/*
- * Set the color count to "val" and redraw if it changed.
- */
-    static void
-may_adjust_color_count(int val)
-{
-    if (val == t_colors)
-	return;
-
-    // Nr of colors changed, initialize highlighting and redraw everything.
-    // This causes a redraw, which usually clears the message.  Try keeping
-    // the message if it might work.
-    set_keep_msg_from_hist();
-    set_color_count(val);
-    init_highlight(TRUE, FALSE);
-#ifdef DEBUG_TERMRESPONSE
-    {
-	int r = redraw_asap(UPD_CLEAR);
-
-	log_tr("Received t_Co, redraw_asap(): %d", r);
-    }
-#else
-    redraw_asap(UPD_CLEAR);
-#endif
-}
-
-#ifdef HAVE_TGETENT
-static char *(key_names[]) =
-{
-# ifdef FEAT_TERMRESPONSE
-    // Do this one first, it may cause a screen redraw.
-    "Co",
-# endif
-    "ku", "kd", "kr", "kl",
-    "#2", "#4", "%i", "*7",
-    "k1", "k2", "k3", "k4", "k5", "k6",
-    "k7", "k8", "k9", "k;", "F1", "F2",
-    "%1", "&8", "kb", "kI", "kD", "kh",
-    "@7", "kP", "kN", "K1", "K3", "K4", "K5", "kB",
-    "PS", "PE",
-    NULL
-};
-#endif
-
-#if defined(HAVE_TGETENT) || defined(FEAT_TERMGUICOLORS)
-/*
- * Return TRUE if "term_strings[idx]" was not set.
- */
-    static int
-term_strings_not_set(enum SpecialKey idx)
-{
-    return TERM_STR(idx) == NULL || TERM_STR(idx) == empty_option;
-}
-#endif
-
-#ifdef HAVE_TGETENT
-/*
- * Get the termcap entries we need with tgetstr(), tgetflag() and tgetnum().
- * "invoke_tgetent()" must have been called before.
- * If "*height" or "*width" are not zero then use the "li" and "col" entries to
- * get their value.
- */
-    static void
-get_term_entries(int *height, int *width)
-{
-    static struct {
-		    enum SpecialKey dest; // index in term_strings[]
-		    char *name;		  // termcap name for string
-		  } string_names[] =
-		    {	{KS_CE, "ce"}, {KS_AL, "al"}, {KS_CAL,"AL"},
-			{KS_DL, "dl"}, {KS_CDL,"DL"}, {KS_CS, "cs"},
-			{KS_CL, "cl"}, {KS_CD, "cd"},
-			{KS_VI, "vi"}, {KS_VE, "ve"}, {KS_MB, "mb"},
-			{KS_ME, "me"}, {KS_MR, "mr"},
-			{KS_MD, "md"}, {KS_SE, "se"}, {KS_SO, "so"},
-			{KS_CZH,"ZH"}, {KS_CZR,"ZR"}, {KS_UE, "ue"},
-			{KS_US, "us"}, {KS_UCE, "Ce"}, {KS_UCS, "Cs"},
-			{KS_USS, "Us"}, {KS_DS, "ds"}, {KS_CDS, "Ds"},
-			{KS_STE,"Te"}, {KS_STS,"Ts"},
-			{KS_CM, "cm"}, {KS_SR, "sr"},
-			{KS_CRI,"RI"}, {KS_VB, "vb"}, {KS_KS, "ks"},
-			{KS_KE, "ke"}, {KS_TI, "ti"}, {KS_TE, "te"},
-			{KS_CTI, "TI"}, {KS_CRK, "RK"}, {KS_CTE, "TE"},
-			{KS_BC, "bc"}, {KS_CSB,"Sb"}, {KS_CSF,"Sf"},
-			{KS_CAB,"AB"}, {KS_CAF,"AF"}, {KS_CAU,"AU"},
-			{KS_LE, "le"},
-			{KS_ND, "nd"}, {KS_OP, "op"},
-			{KS_CRV, "RV"}, {KS_CXM, "XM"},
-			{KS_VS, "vs"}, {KS_CVS, "VS"},
-			{KS_CIS, "IS"}, {KS_CIE, "IE"},
-			{KS_CSC, "SC"}, {KS_CEC, "EC"},
-			{KS_TS, "ts"}, {KS_FS, "fs"},
-			{KS_CWP, "WP"}, {KS_CWS, "WS"},
-			{KS_CSI, "SI"}, {KS_CEI, "EI"},
-			{KS_U7, "u7"}, {KS_RFG, "RF"}, {KS_RBG, "RB"},
-			{KS_8F, "8f"}, {KS_8B, "8b"}, {KS_8U, "8u"},
-			{KS_CBE, "BE"}, {KS_CBD, "BD"},
-			{KS_CST, "ST"}, {KS_CRT, "RT"},
-			{KS_SSI, "Si"}, {KS_SRI, "Ri"},
-			{(enum SpecialKey)0, NULL}
-		    };
-    int		    i;
-    static char_u   tstrbuf[TBUFSZ];
-    char_u	    *tp = tstrbuf;
-
-    /*
-     * get output strings
-     */
-    for (i = 0; string_names[i].name != NULL; ++i)
-    {
-	if (term_strings_not_set(string_names[i].dest))
-	{
-	    TERM_STR(string_names[i].dest) = TGETSTR(string_names[i].name, &tp);
-#ifdef FEAT_EVAL
-	    set_term_option_sctx_idx(string_names[i].name, -1);
-#endif
-	}
-    }
-
-    // tgetflag() returns 1 if the flag is present, 0 if not and
-    // possibly -1 if the flag doesn't exist.
-    if ((T_MS == NULL || T_MS == empty_option) && tgetflag("ms") > 0)
-	T_MS = (char_u *)"y";
-    if ((T_XS == NULL || T_XS == empty_option) && tgetflag("xs") > 0)
-	T_XS = (char_u *)"y";
-    if ((T_XN == NULL || T_XN == empty_option) && tgetflag("xn") > 0)
-	T_XN = (char_u *)"y";
-    if ((T_DB == NULL || T_DB == empty_option) && tgetflag("db") > 0)
-	T_DB = (char_u *)"y";
-    if ((T_DA == NULL || T_DA == empty_option) && tgetflag("da") > 0)
-	T_DA = (char_u *)"y";
-    if ((T_UT == NULL || T_UT == empty_option) && tgetflag("ut") > 0)
-	T_UT = (char_u *)"y";
-
-    /*
-     * get key codes
-     */
-    for (i = 0; key_names[i] != NULL; ++i)
-	if (find_termcode((char_u *)key_names[i]) == NULL)
-	{
-	    char_u *p = TGETSTR(key_names[i], &tp);
-
-	    // if cursor-left == backspace, ignore it (televideo 925)
-	    if (p != NULL
-		    && (*p != Ctrl_H
-			|| key_names[i][0] != 'k'
-			|| key_names[i][1] != 'l'))
-		add_termcode((char_u *)key_names[i], p, FALSE);
-	}
-
-    if (*height == 0)
-	*height = tgetnum("li");
-    if (*width == 0)
-	*width = tgetnum("co");
-
-    /*
-     * Get number of colors (if not done already).
-     */
-    if (term_strings_not_set(KS_CCO))
-    {
-	set_color_count(tgetnum("Co"));
-#ifdef FEAT_EVAL
-	set_term_option_sctx_idx("Co", -1);
-#endif
-    }
-
-# ifndef hpux
-    BC = (char *)TGETSTR("bc", &tp);
-    UP = (char *)TGETSTR("up", &tp);
-    char_u *p = TGETSTR("pc", &tp);
-    if (p != NULL)
-	PC = *p;
-# endif
-}
-#endif
-
-/*
- * Report "term" is not found and list the ones we do know about.
- */
-    static void
-report_term_error(char *error_msg, char_u *term)
-{
-    mch_errmsg("\r\n");
-    if (error_msg != NULL)
-    {
-	mch_errmsg(error_msg);
-	mch_errmsg("\r\n");
-    }
-    mch_errmsg("'");
-    mch_errmsg((char *)term);
-    mch_errmsg(_("' not known. Available builtin terminals are:"));
-    mch_errmsg("\r\n");
-
-    for (int i = 0; ; ++i)
-    {
-	char *name = builtin_terminals[i].bitc_name;
-	if (name == NULL)  // end marker
-	    break;
-	// Do not mention the "gui" entry, the user won't need to type it.
-	if (STRCMP(name, "gui") != 0)
-	{
-#ifdef HAVE_TGETENT
-	    mch_errmsg("    builtin_");
-#else
-	    mch_errmsg("    ");
-#endif
-	    mch_errmsg(name);
-	    mch_errmsg("\r\n");
-	}
-    }
-    // Output extra 'cmdheight' line breaks to avoid that the following error
-    // message overwrites the last terminal name.
-    for (int i = 1; i < p_ch; ++i)
-	mch_errmsg("\r\n");
-}
-
-    static void
-report_default_term(char_u *term)
-{
-    mch_errmsg(_("defaulting to '"));
-    mch_errmsg((char *)term);
-    mch_errmsg("'\r\n");
-    if (emsg_silent == 0 && !in_assert_fails)
-    {
-	screen_start();	// don't know where cursor is now
-	out_flush();
-	if (!is_not_a_term())
-	    ui_delay(2007L, TRUE);
-    }
-}
-
-/*
- * Parse the 'keyprotocol' option, match against "term" and return the protocol
- * for the first matching entry.
- * When "term" is NULL then compile all patterns to check for any errors.
- * Returns KEYPROTOCOL_FAIL if a pattern cannot be compiled.
- * Returns KEYPROTOCOL_NONE if there is no match.
- */
-    keyprot_T
-match_keyprotocol(char_u *term)
-{
-    int		len = (int)STRLEN(p_kpc) + 1;
-    char_u	*buf = alloc(len);
-    if (buf == NULL)
-	return KEYPROTOCOL_FAIL;
-
-    keyprot_T	ret = KEYPROTOCOL_FAIL;
-    char_u	*p = p_kpc;
-    while (*p != NUL)
-    {
-	// Isolate one comma separated item.
-	(void)copy_option_part(&p, buf, len, ",");
-	char_u *colon = vim_strchr(buf, ':');
-	if (colon == NULL || colon == buf || colon[1] == NUL)
-	    goto theend;
-	*colon = NUL;
-
-	keyprot_T prot;
-	if (STRCMP(colon + 1, "none") == 0)
-	    prot = KEYPROTOCOL_NONE;
-	else if (STRCMP(colon + 1, "mok2") == 0)
-	    prot = KEYPROTOCOL_MOK2;
-	else if (STRCMP(colon + 1, "kitty") == 0)
-	    prot = KEYPROTOCOL_KITTY;
-	else
-	    goto theend;
-
-	regmatch_T regmatch;
-	CLEAR_FIELD(regmatch);
-	regmatch.rm_ic = TRUE;
-	regmatch.regprog = vim_regcomp(buf, RE_MAGIC);
-	if (regmatch.regprog == NULL)
-	    goto theend;
-
-	int match = term != NULL && vim_regexec(&regmatch, term, (colnr_T)0);
-	vim_regfree(regmatch.regprog);
-	if (match)
-	{
-	    ret = prot;
-	    goto theend;
-	}
-
-    }
-
-    // No match found, use "none".
-    ret = KEYPROTOCOL_NONE;
-
-theend:
-    vim_free(buf);
-    return ret;
-}
-
-/*
- * Set terminal options for terminal "term".
- * Return OK if terminal 'term' was found in a termcap, FAIL otherwise.
- *
- * While doing this, until ttest(), some options may be NULL, be careful.
- */
-    int
-set_termname(char_u *term)
-{
-#ifdef HAVE_TGETENT
-    int		builtin_first = p_tbi;
-    int		try;
-    int		termcap_cleared = FALSE;
-#endif
-    int		width = 0, height = 0;
-    char	*error_msg = NULL;
-    char_u	*bs_p, *del_p;
-
-    // In silect mode (ex -s) we don't use the 'term' option.
-    if (silent_mode)
-	return OK;
-
-    detected_8bit = FALSE;		// reset 8-bit detection
-
-    if (term_is_builtin(term))
-    {
-	term += 8;
-#ifdef HAVE_TGETENT
-	builtin_first = 1;
-#endif
-    }
-
-/*
- * If HAVE_TGETENT is not defined, only the builtin termcap is used, otherwise:
- *   If builtin_first is TRUE:
- *     0. try builtin termcap
- *     1. try external termcap
- *     2. if both fail default to a builtin terminal
- *   If builtin_first is FALSE:
- *     1. try external termcap
- *     2. try builtin termcap, if both fail default to a builtin terminal
- */
-#ifdef HAVE_TGETENT
-    for (try = builtin_first ? 0 : 1; try < 3; ++try)
-    {
-	/*
-	 * Use external termcap
-	 */
-	if (try == 1)
-	{
-	    char_u	    tbuf[TBUFSZ];
-
-	    /*
-	     * If the external termcap does not have a matching entry, try the
-	     * builtin ones.
-	     */
-	    if ((error_msg = invoke_tgetent(tbuf, term)) == NULL)
-	    {
-		if (!termcap_cleared)
-		{
-		    clear_termoptions();	// clear old options
-		    termcap_cleared = TRUE;
-		}
-
-		get_term_entries(&height, &width);
-	    }
-	}
-	else	    // try == 0 || try == 2
-#endif // HAVE_TGETENT
-	/*
-	 * Use builtin termcap
-	 */
-	{
-#ifdef HAVE_TGETENT
-	    /*
-	     * If builtin termcap was already used, there is no need to search
-	     * for the builtin termcap again, quit now.
-	     */
-	    if (try == 2 && builtin_first && termcap_cleared)
-		break;
-#endif
-	    /*
-	     * Search for 'term' in builtin_terminals[].
-	     */
-	    tcap_entry_T *termp = find_builtin_term(term);
-	    if (termp == NULL)	// did not find it
-	    {
-#ifdef HAVE_TGETENT
-		/*
-		 * If try == 0, first try the external termcap. If that is not
-		 * found we'll get back here with try == 2.
-		 * If termcap_cleared is set we used the external termcap,
-		 * don't complain about not finding the term in the builtin
-		 * termcap.
-		 */
-		if (try == 0)			// try external one
-		    continue;
-		if (termcap_cleared)		// found in external termcap
-		    break;
-#endif
-		report_term_error(error_msg, term);
-
-		// when user typed :set term=xxx, quit here
-		if (starting != NO_SCREEN)
-		{
-		    screen_start();	// don't know where cursor is now
-		    wait_return(TRUE);
-		    return FAIL;
-		}
-		term = DEFAULT_TERM;
-		report_default_term(term);
-		set_string_option_direct((char_u *)"term", -1, term,
-								 OPT_FREE, 0);
-		display_errors();
-	    }
-	    out_flush();
-#ifdef HAVE_TGETENT
-	    if (!termcap_cleared)
-	    {
-#endif
-		clear_termoptions();	    // clear old options
-#ifdef HAVE_TGETENT
-		termcap_cleared = TRUE;
-	    }
-#endif
-	    parse_builtin_tcap(term);
-
-#ifdef FEAT_GUI
-	    if (term_is_gui(term))
-	    {
-		out_flush();
-		gui_init();
-		// If starting the GUI failed, don't do any of the other
-		// things for this terminal
-		if (!gui.in_use)
-		    return FAIL;
-# ifdef HAVE_TGETENT
-		break;		// don't try using external termcap
-# endif
-	    }
-#endif // FEAT_GUI
-	}
-#ifdef HAVE_TGETENT
-    }
-#endif
-
-#ifdef FEAT_GUI
-    if (!gui.in_use)
-#endif
-    {
-	// Use the 'keyprotocol' option to adjust the t_TE and t_TI
-	// termcap entries if there is an entry matching "term".
-	keyprot_T kpc = match_keyprotocol(term);
-	if (kpc == KEYPROTOCOL_KITTY)
-	    apply_builtin_tcap(term, builtin_kitty, TRUE);
-	else if (kpc == KEYPROTOCOL_MOK2)
-	    apply_builtin_tcap(term, builtin_mok2, TRUE);
-
-#ifdef FEAT_TERMGUICOLORS
-	// There is no good way to detect that the terminal supports RGB
-	// colors.  Since these termcap entries are non-standard anyway and
-	// only used when the user sets 'termguicolors' we might as well add
-	// them.  But not when one of them was already set.
-	if (term_strings_not_set(KS_8F)
-		&& term_strings_not_set(KS_8B)
-		&& term_strings_not_set(KS_8U))
-	    apply_builtin_tcap(term, builtin_rgb, TRUE);
-#endif
-
-	if (kpc != KEYPROTOCOL_NONE)
-	    // Some function keys may accept modifiers even though the
-	    // terminfo/termcap entry does not indicate this.
-	    accept_modifiers_for_function_keys();
-    }
-
-/*
- * special: There is no info in the termcap about whether the cursor
- * positioning is relative to the start of the screen or to the start of the
- * scrolling region.  We just guess here. Only msdos pcterm is known to do it
- * relative.
- */
-    if (STRCMP(term, "pcterm") == 0)
-	T_CCS = (char_u *)"yes";
-    else
-	T_CCS = empty_option;
-
-    // Special case: "kitty" may not have a "RV" entry in terminfo, but we need
-    // to request the version for several other things to work.
-    if (strstr((char *)term, "kitty") != NULL
-					   && (T_CRV == NULL || *T_CRV == NUL))
-	T_CRV = (char_u *)"\033[>c";
-
-#ifdef UNIX
-/*
- * Any "stty" settings override the default for t_kb from the termcap.
- * This is in os_unix.c, because it depends a lot on the version of unix that
- * is being used.
- * Don't do this when the GUI is active, it uses "t_kb" and "t_kD" directly.
- */
-# ifdef FEAT_GUI
-    if (!gui.in_use)
-# endif
-	get_stty();
-#endif
-
-/*
- * If the termcap has no entry for 'bs' and/or 'del' and the ioctl() also
- * didn't work, use the default CTRL-H
- * The default for t_kD is DEL, unless t_kb is DEL.
- * The vim_strsave'd strings are probably lost forever, well it's only two
- * bytes.  Don't do this when the GUI is active, it uses "t_kb" and "t_kD"
- * directly.
- */
-#ifdef FEAT_GUI
-    if (!gui.in_use)
-#endif
-    {
-	bs_p = find_termcode((char_u *)"kb");
-	del_p = find_termcode((char_u *)"kD");
-	if (bs_p == NULL || *bs_p == NUL)
-	    add_termcode((char_u *)"kb", (bs_p = (char_u *)CTRL_H_STR), FALSE);
-	if ((del_p == NULL || *del_p == NUL) &&
-					    (bs_p == NULL || *bs_p != DEL))
-	    add_termcode((char_u *)"kD", (char_u *)DEL_STR, FALSE);
-    }
-
-#if defined(UNIX) || defined(VMS)
-    term_is_xterm = vim_is_xterm(term);
-#endif
-#ifdef FEAT_TERMRESPONSE
-    // Reset terminal properties that are set based on the termresponse, which
-    // will be sent out soon.
-    init_term_props(FALSE);
-#endif
-
-#if defined(UNIX) || defined(VMS)
-    // If the first number in t_XM is 1006 then the terminal will support SGR
-    // mouse reporting.
-    int did_set_ttym = FALSE;
-    if (T_CXM != NULL && *T_CXM != NUL && !option_was_set((char_u *)"ttym"))
-    {
-	char_u *p = T_CXM;
-
-	while (*p != NUL && !VIM_ISDIGIT(*p))
-	    ++p;
-	if (getdigits(&p) == 1006)
-	{
-	    did_set_ttym = TRUE;
-	    set_option_value_give_err((char_u *)"ttym", 0L, (char_u *)"sgr", 0);
-	}
-    }
-
-    /*
-     * For Unix, set the 'ttymouse' option to the type of mouse to be used.
-     * The termcode for the mouse is added as a side effect in option.c.
-     */
-    {
-	char_u	*p = (char_u *)"";
-
-# ifdef FEAT_MOUSE_XTERM
-	if (use_xterm_like_mouse(term))
-	{
-	    if (use_xterm_mouse())
-		p = NULL;	// keep existing value, might be "xterm2"
-	    else
-		p = (char_u *)"xterm";
-	}
-# endif
-	if (p != NULL && !did_set_ttym)
-	{
-	    set_option_value_give_err((char_u *)"ttym", 0L, p, 0);
-	    // Reset the WAS_SET flag, 'ttymouse' can be set to "sgr" or
-	    // "xterm2" in check_termcode().
-	    reset_option_was_set((char_u *)"ttym");
-	}
-	if (p == NULL
-#  ifdef FEAT_GUI
-		|| gui.in_use
-#  endif
-		)
-	    check_mouse_termcode();	// set mouse termcode anyway
-    }
-#else
-    set_mouse_termcode(KS_MOUSE, (char_u *)"\233M");
-#endif
-
-#ifdef FEAT_MOUSE_XTERM
-    // Focus reporting is supported by xterm compatible terminals and tmux.
-    // We hard-code the received escape sequences here.  There are the terminfo
-    // entries kxIN and kxOUT, but they are rarely used and do hot have a
-    // two-letter termcap name.
-    // This used to be done only for xterm-like terminals, but some others also
-    // may produce these codes.  Always recognize them, as the chance of them
-    // being used for something else is very small.
-    {
-	char_u name[3];
-
-	// handle focus in event
-	name[0] = KS_EXTRA;
-	name[1] = KE_FOCUSGAINED;
-	name[2] = NUL;
-	add_termcode(name, (char_u *)"\033[I", FALSE);
-
-	// handle focus out event
-	name[1] = KE_FOCUSLOST;
-	add_termcode(name, (char_u *)"\033[O", FALSE);
-
-	need_gather = TRUE;
-    }
-#endif
-#if (defined(UNIX) || defined(VMS))
-    // First time after setting 'term' a focus event is always reported.
-    focus_state = MAYBE;
-#endif
-
-#ifdef USE_TERM_CONSOLE
-    // DEFAULT_TERM indicates that it is the machine console.
-    if (STRCMP(term, DEFAULT_TERM) != 0)
-	term_console = FALSE;
-    else
-    {
-	term_console = TRUE;
-# ifdef AMIGA
-	win_resize_on();	// enable window resizing reports
-# endif
-    }
-#endif
-
-    ttest(TRUE);	// make sure we have a valid set of terminal codes
-
-    full_screen = TRUE;		// we can use termcap codes from now on
-    set_term_defaults();	// use current values as defaults
-#ifdef FEAT_TERMRESPONSE
-    LOG_TR(("setting crv_status to STATUS_GET"));
-    crv_status.tr_progress = STATUS_GET;	// Get terminal version later
-    write_t_8u_state = FALSE;
-#endif
-
-    /*
-     * Initialize the terminal with the appropriate termcap codes.
-     * Set the mouse and window title if possible.
-     * Don't do this when starting, need to parse the .vimrc first, because it
-     * may redefine t_TI etc.
-     */
-    if (starting != NO_SCREEN)
-    {
-	starttermcap();		// may change terminal mode
-	setmouse();		// may start using the mouse
-	maketitle();		// may display window title
-    }
-
-	// display initial screen after ttest() checking. jw.
-    if (width <= 0 || height <= 0)
-    {
-	// termcap failed to report size
-	// set defaults, in case ui_get_shellsize() also fails
-	width = 80;
-#if defined(MSWIN)
-	height = 25;	    // console is often 25 lines
-#else
-	height = 24;	    // most terminals are 24 lines
-#endif
-    }
-    set_shellsize(width, height, FALSE);	// may change Rows
-    if (starting != NO_SCREEN)
-    {
-	if (scroll_region)
-	    scroll_region_reset();		// In case Rows changed
-	check_map_keycodes();	// check mappings for terminal codes used
-
-	{
-	    buf_T	*buf;
-	    aco_save_T	aco;
-
-	    /*
-	     * Execute the TermChanged autocommands for each buffer that is
-	     * loaded.
-	     */
-	    FOR_ALL_BUFFERS(buf)
-	    {
-		if (curbuf->b_ml.ml_mfp != NULL)
-		{
-		    aucmd_prepbuf(&aco, buf);
-		    if (curbuf == buf)
-		    {
-			apply_autocmds(EVENT_TERMCHANGED, NULL, NULL, FALSE,
-								      curbuf);
-			// restore curwin/curbuf and a few other things
-			aucmd_restbuf(&aco);
-		    }
-		}
-	    }
-	}
-    }
-
-#ifdef FEAT_TERMRESPONSE
-    may_req_termresponse();
-#endif
-
-    return OK;
-}
-
-#if defined(EXITFREE) || defined(PROTO)
-
-# ifdef HAVE_DEL_CURTERM
-#  include <term.h>	    // declares cur_term
-# endif
-
-/*
- * If supported, delete "cur_term", which caches terminal related entries.
- * Avoids that valgrind reports possibly lost memory.
- */
-    void
-free_cur_term(void)
-{
-# ifdef HAVE_DEL_CURTERM
-    if (cur_term)
-	del_curterm(cur_term);
-# endif
-}
-
-#endif
-
-#ifdef HAVE_TGETENT
-/*
- * Call tgetent()
- * Return error message if it fails, NULL if it's OK.
- */
-    static char *
-invoke_tgetent(char_u *tbuf, char_u *term)
-{
-    int	    i;
-
-    // Note: Valgrind may report a leak here, because the library keeps one
-    // buffer around that we can't ever free.
-    i = TGETENT(tbuf, term);
-    if (i < 0		    // -1 is always an error
-# ifdef TGETENT_ZERO_ERR
-	    || i == 0	    // sometimes zero is also an error
-# endif
-       )
-    {
-	// On FreeBSD tputs() gets a SEGV after a tgetent() which fails.  Call
-	// tgetent() with the always existing "dumb" entry to avoid a crash or
-	// hang.
-	(void)TGETENT(tbuf, "dumb");
-
-	if (i < 0)
-# ifdef TGETENT_ZERO_ERR
-	    return _(e_cannot_open_termcap_file);
-	if (i == 0)
-# endif
-#ifdef TERMINFO
-	    return _(e_terminal_entry_not_found_in_terminfo);
-#else
-	    return _(e_terminal_entry_not_found_in_termcap);
-#endif
-    }
-    return NULL;
-}
-
-/*
- * Some versions of tgetstr() have been reported to return -1 instead of NULL.
- * Fix that here.
- */
-    static char_u *
-vim_tgetstr(char *s, char_u **pp)
-{
-    char	*p;
-
-    p = tgetstr(s, (char **)pp);
-    if (p == (char *)-1)
-	p = NULL;
-    return (char_u *)p;
-}
-#endif // HAVE_TGETENT
-
-#if defined(HAVE_TGETENT) && (defined(UNIX) || defined(VMS) || defined(MACOS_X))
-/*
- * Get Columns and Rows from the termcap. Used after a window signal if the
- * ioctl() fails. It doesn't make sense to call tgetent each time if the "co"
- * and "li" entries never change. But on some systems this works.
- * Errors while getting the entries are ignored.
- */
-    void
-getlinecol(
-    long	*cp,	// pointer to columns
-    long	*rp)	// pointer to rows
-{
-    char_u	tbuf[TBUFSZ];
-
-    if (T_NAME == NULL || *T_NAME == NUL
-	    || invoke_tgetent(tbuf, T_NAME) != NULL)
-	return;
-
-    if (*cp == 0)
-	*cp = tgetnum("co");
-    if (*rp == 0)
-	*rp = tgetnum("li");
-}
-#endif // defined(HAVE_TGETENT) && defined(UNIX)
-
-/*
- * Get a string entry from the termcap and add it to the list of termcodes.
- * Used for <t_xx> special keys.
- * Give an error message for failure when not sourcing.
- * If force given, replace an existing entry.
- * Return FAIL if the entry was not found, OK if the entry was added.
- */
-    int
-add_termcap_entry(char_u *name, int force)
-{
-    char_u  *term;
-    int	    key;
-#ifdef HAVE_TGETENT
-    char_u  *string;
-    int	    i;
-    int	    builtin_first;
-    char_u  tbuf[TBUFSZ];
-    char_u  tstrbuf[TBUFSZ];
-    char_u  *tp = tstrbuf;
-    char    *error_msg = NULL;
-#endif
-
-/*
- * If the GUI is running or will start in a moment, we only support the keys
- * that the GUI can produce.
- */
-#ifdef FEAT_GUI
-    if (gui.in_use || gui.starting)
-	return gui_mch_haskey(name);
-#endif
-
-    if (!force && find_termcode(name) != NULL)	    // it's already there
-	return OK;
-
-    term = T_NAME;
-    if (term == NULL || *term == NUL)	    // 'term' not defined yet
-	return FAIL;
-
-    if (term_is_builtin(term))		    // name starts with "builtin_"
-    {
-	term += 8;
-#ifdef HAVE_TGETENT
-	builtin_first = TRUE;
-#endif
-    }
-#ifdef HAVE_TGETENT
-    else
-	builtin_first = p_tbi;
-#endif
-
-#ifdef HAVE_TGETENT
-/*
- * We can get the entry from the builtin termcap and from the external one.
- * If 'ttybuiltin' is on or the terminal name starts with "builtin_", try
- * builtin termcap first.
- * If 'ttybuiltin' is off, try external termcap first.
- */
-    for (i = 0; i < 2; ++i)
-    {
-	if ((!builtin_first) == i)
-#endif
-	/*
-	 * Search in builtin termcaps
-	 */
-	{
-	    tcap_entry_T *termp = find_builtin_term(term);
-	    if (termp != NULL)	// found it
-	    {
-		key = TERMCAP2KEY(name[0], name[1]);
-		++termp;
-		while (termp->bt_entry != (int)KS_NAME)
-		{
-		    if ((int)termp->bt_entry == key)
-		    {
-			add_termcode(name, (char_u *)termp->bt_string,
-							  term_is_8bit(term));
-			return OK;
-		    }
-		    ++termp;
-		}
-	    }
-	}
-#ifdef HAVE_TGETENT
-	else
-	/*
-	 * Search in external termcap
-	 */
-	{
-	    error_msg = invoke_tgetent(tbuf, term);
-	    if (error_msg == NULL)
-	    {
-		string = TGETSTR((char *)name, &tp);
-		if (string != NULL && *string != NUL)
-		{
-		    add_termcode(name, string, FALSE);
-		    return OK;
-		}
-	    }
-	}
-    }
-#endif
-
-    if (SOURCING_NAME == NULL)
-    {
-#ifdef HAVE_TGETENT
-	if (error_msg != NULL)
-	    emsg(error_msg);
-	else
-#endif
-	    semsg(_(e_no_str_entry_in_termcap), name);
-    }
-    return FAIL;
-}
-
-    static int
-term_is_builtin(char_u *name)
-{
-    return (STRNCMP(name, "builtin_", (size_t)8) == 0);
-}
-
-/*
- * Return TRUE if terminal "name" uses CSI instead of <Esc>[.
- * Assume that the terminal is using 8-bit controls when the name contains
- * "8bit", like in "xterm-8bit".
- */
-    int
-term_is_8bit(char_u *name)
-{
-    return (detected_8bit || strstr((char *)name, "8bit") != NULL);
-}
-
-/*
- * Translate terminal control chars from 7-bit to 8-bit:
- * <Esc>[ -> CSI  <M_C_[>
- * <Esc>] -> OSC  <M-C-]>
- * <Esc>O -> <M-C-O>
- */
-    static int
-term_7to8bit(char_u *p)
-{
-    if (*p != ESC)
-	return 0;
-
-    if (p[1] == '[')
-	return CSI;
-    else if (p[1] == ']')
-	return OSC;
-    else if (p[1] == 'O')
-	return 0x8f;
-    return 0;
-}
-
-#if defined(FEAT_GUI) || defined(PROTO)
-    int
-term_is_gui(char_u *name)
-{
-    return (STRCMP(name, "builtin_gui") == 0 || STRCMP(name, "gui") == 0);
-}
-#endif
-
-#if !defined(HAVE_TGETENT) || defined(AMIGA) || defined(PROTO)
-
-    char_u *
-tltoa(unsigned long i)
-{
-    static char_u buf[16];
-    char_u	*p;
-
-    p = buf + 15;
-    *p = '\0';
-    do
-    {
-	--p;
-	*p = (char_u) (i % 10 + '0');
-	i /= 10;
-    }
-    while (i > 0 && p > buf);
-    return p;
-}
-#endif
-
-#ifndef HAVE_TGETENT
-
-/*
- * minimal tgoto() implementation.
- * no padding and we only parse for %i %d and %+char
- */
-    static char *
-tgoto(char *cm, int x, int y)
-{
-    static char buf[30];
-    char *p, *s, *e;
-
-    if (!cm)
-	return "OOPS";
-    e = buf + 29;
-    for (s = buf; s < e && *cm; cm++)
-    {
-	if (*cm != '%')
-	{
-	    *s++ = *cm;
-	    continue;
-	}
-	switch (*++cm)
-	{
-	case 'd':
-	    p = (char *)tltoa((unsigned long)y);
-	    y = x;
-	    while (*p)
-		*s++ = *p++;
-	    break;
-	case 'i':
-	    x++;
-	    y++;
-	    break;
-	case '+':
-	    *s++ = (char)(*++cm + y);
-	    y = x;
-	    break;
-	case '%':
-	    *s++ = *cm;
-	    break;
-	default:
-	    return "OOPS";
-	}
-    }
-    *s = '\0';
-    return buf;
-}
-
-#endif // HAVE_TGETENT
-
-/*
- * Set the terminal name and initialize the terminal options.
- * If "name" is NULL or empty, get the terminal name from the environment.
- * If that fails, use the default terminal name.
- */
-    void
-termcapinit(char_u *name)
-{
-    char_u	*term = name;
-
-    if (term != NULL && *term == NUL)
-	term = NULL;	    // empty name is equal to no name
-
-#ifndef MSWIN
-    if (term == NULL)
-	term = mch_getenv((char_u *)"TERM");
-#endif
-    if (term == NULL || *term == NUL)
-	term = DEFAULT_TERM;
-    set_string_option_direct((char_u *)"term", -1, term, OPT_FREE, 0);
-
-    // Set the default terminal name.
-    set_string_default("term", term);
-    set_string_default("ttytype", term);
-
-    // Avoid using "term" here, because the next mch_getenv() may overwrite it.
-    set_termname(T_NAME != NULL ? T_NAME : term);
-}
-
-/*
- * The number of calls to ui_write is reduced by using "out_buf".
- */
-#define OUT_SIZE	2047
-
-// add one to allow mch_write() in os_win32.c to append a NUL
-static char_u		out_buf[OUT_SIZE + 1];
-
-static int		out_pos = 0;	// number of chars in out_buf
-
-// Since the maximum number of SGR parameters shown as a normal value range is
-// 16, the escape sequence length can be 4 * 16 + lead + tail.
-#define MAX_ESC_SEQ_LEN	80
-
-/*
- * out_flush(): flush the output buffer
- */
-    void
-out_flush(void)
-{
-    int	    len;
-
-    if (out_pos == 0)
-	return;
-
-    // set out_pos to 0 before ui_write, to avoid recursiveness
-    len = out_pos;
-    out_pos = 0;
-    ui_write(out_buf, len, FALSE);
-#ifdef FEAT_EVAL
-    if (ch_log_output != FALSE)
-    {
-	out_buf[len] = NUL;
-	ch_log(NULL, "raw %s output: \"%s\"",
-# ifdef FEAT_GUI
-		(gui.in_use && !gui.dying && !gui.starting) ? "GUI" :
-# endif
-		"terminal",
-		out_buf);
-	if (ch_log_output == TRUE)
-	    ch_log_output = FALSE;  // only log once
-    }
-#endif
-}
-
-/*
- * out_flush_cursor(): flush the output buffer and redraw the cursor.
- * Does not flush recursively in the GUI to avoid slow drawing.
- */
-    void
-out_flush_cursor(
-    int	    force UNUSED,   // when TRUE, update cursor even when not moved
-    int	    clear_selection UNUSED) // clear selection under cursor
-{
-    mch_disable_flush();
-    out_flush();
-    mch_enable_flush();
-#ifdef FEAT_GUI
-    if (gui.in_use)
-    {
-	gui_update_cursor(force, clear_selection);
-	gui_may_flush();
-    }
-#endif
-}
-
-
-/*
- * Sometimes a byte out of a multi-byte character is written with out_char().
- * To avoid flushing half of the character, call this function first.
- */
-    void
-out_flush_check(void)
-{
-    if (enc_dbcs != 0 && out_pos >= OUT_SIZE - MB_MAXBYTES)
-	out_flush();
-}
-
-#ifdef FEAT_GUI
-/*
- * out_trash(): Throw away the contents of the output buffer
- */
-    void
-out_trash(void)
-{
-    out_pos = 0;
-}
-#endif
-
-/*
- * out_char(c): put a byte into the output buffer.
- *		Flush it if it becomes full.
- * This should not be used for outputting text on the screen (use functions
- * like msg_puts() and screen_putchar() for that).
- */
-    void
-out_char(unsigned c)
-{
-#if defined(UNIX) || defined(VMS) || defined(AMIGA) || defined(MACOS_X)
-    if (c == '\n')	// turn LF into CR-LF (CRMOD doesn't seem to do this)
-	out_char('\r');
-#endif
-
-    out_buf[out_pos++] = c;
-
-    // For testing we flush each time.
-    if (out_pos >= OUT_SIZE || p_wd)
-	out_flush();
-}
-
-/*
- * Output "c" like out_char(), but don't flush when p_wd is set.
- */
-    static int
-out_char_nf(int c)
-{
-    out_buf[out_pos++] = (unsigned)c;
-
-    if (out_pos >= OUT_SIZE)
-	out_flush();
-    return (unsigned)c;
-}
-
-/*
- * A never-padding out_str().
- * Use this whenever you don't want to run the string through tputs().
- * tputs() above is harmless, but tputs() from the termcap library
- * is likely to strip off leading digits, that it mistakes for padding
- * information, and "%i", "%d", etc.
- * This should only be used for writing terminal codes, not for outputting
- * normal text (use functions like msg_puts() and screen_putchar() for that).
- */
-    void
-out_str_nf(char_u *s)
-{
-    // avoid terminal strings being split up
-    if (out_pos > OUT_SIZE - MAX_ESC_SEQ_LEN)
-	out_flush();
-
-    for (char_u *p = s; *p != NUL; ++p)
-	out_char_nf(*p);
-
-    // For testing we write one string at a time.
-    if (p_wd)
-	out_flush();
-}
-
-/*
- * A conditional-flushing out_str, mainly for visualbell.
- * Handles a delay internally, because termlib may not respect the delay or do
- * it at the wrong time.
- * Note: Only for terminal strings.
- */
-    void
-out_str_cf(char_u *s)
-{
-    if (s == NULL || *s == NUL)
-	return;
-
-#ifdef HAVE_TGETENT
-    char_u *p;
-#endif
-
-#ifdef FEAT_GUI
-    // Don't use tputs() when GUI is used, ncurses crashes.
-    if (gui.in_use)
-    {
-	out_str_nf(s);
-	return;
-    }
-#endif
-    if (out_pos > OUT_SIZE - MAX_ESC_SEQ_LEN)
-	out_flush();
-#ifdef HAVE_TGETENT
-    for (p = s; *s; ++s)
-    {
-	// flush just before delay command
-	if (*s == '$' && *(s + 1) == '<')
-	{
-	    char_u save_c = *s;
-	    int duration = atoi((char *)s + 2);
-
-	    *s = NUL;
-	    tputs((char *)p, 1, TPUTSFUNCAST out_char_nf);
-	    *s = save_c;
-	    out_flush();
-# ifdef ELAPSED_FUNC
-	    // Only sleep here if we can limit this happening in
-	    // vim_beep().
-	    p = vim_strchr(s, '>');
-	    if (p == NULL || duration <= 0)
-	    {
-		// can't parse the time, don't sleep here
-		p = s;
-	    }
-	    else
-	    {
-		++p;
-		do_sleep(duration, FALSE);
-	    }
-# else
-	    // Rely on the terminal library to sleep.
-	    p = s;
-# endif
-	    break;
-	}
-    }
-    tputs((char *)p, 1, TPUTSFUNCAST out_char_nf);
-#else
-    while (*s)
-	out_char_nf(*s++);
-#endif
-
-    // For testing we write one string at a time.
-    if (p_wd)
-	out_flush();
-}
-
-/*
- * out_str(s): Put a character string a byte at a time into the output buffer.
- * If HAVE_TGETENT is defined use tputs(), the termcap parser. (jw)
- * This should only be used for writing terminal codes, not for outputting
- * normal text (use functions like msg_puts() and screen_putchar() for that).
- */
-    void
-out_str(char_u *s)
-{
-    if (s == NULL || *s == NUL)
-	return;
-
-#ifdef FEAT_GUI
-    // Don't use tputs() when GUI is used, ncurses crashes.
-    if (gui.in_use)
-    {
-	out_str_nf(s);
-	return;
-    }
-#endif
-    // avoid terminal strings being split up
-    if (out_pos > OUT_SIZE - MAX_ESC_SEQ_LEN)
-	out_flush();
-#ifdef HAVE_TGETENT
-    tputs((char *)s, 1, TPUTSFUNCAST out_char_nf);
-#else
-    while (*s)
-	out_char_nf(*s++);
-#endif
-
-    // For testing we write one string at a time.
-    if (p_wd)
-	out_flush();
-}
-
-/*
- * cursor positioning using termcap parser. (jw)
- */
-    void
-term_windgoto(int row, int col)
-{
-    OUT_STR(tgoto((char *)T_CM, col, row));
-}
-
-    void
-term_cursor_right(int i)
-{
-    OUT_STR(tgoto((char *)T_CRI, 0, i));
-}
-
-    void
-term_append_lines(int line_count)
-{
-    OUT_STR(tgoto((char *)T_CAL, 0, line_count));
-}
-
-    void
-term_delete_lines(int line_count)
-{
-    OUT_STR(tgoto((char *)T_CDL, 0, line_count));
-}
-
-#if defined(UNIX) || defined(PROTO)
-    void
-term_enable_mouse(int enable)
-{
-    int on = enable ? 1 : 0;
-    OUT_STR(tgoto((char *)T_CXM, 0, on));
-}
-#endif
-
-#if defined(HAVE_TGETENT) || defined(PROTO)
-    void
-term_set_winpos(int x, int y)
-{
-    // Can't handle a negative value here
-    if (x < 0)
-	x = 0;
-    if (y < 0)
-	y = 0;
-    OUT_STR(tgoto((char *)T_CWP, y, x));
-}
-
-# if defined(FEAT_TERMRESPONSE) || defined(PROTO)
-/*
- * Return TRUE if we can request the terminal for a response.
- */
-    static int
-can_get_termresponse(void)
-{
-    return cur_tmode == TMODE_RAW
-	    && termcap_active
-#  ifdef UNIX
-	    && (is_not_a_term() || (isatty(1) && isatty(read_cmd_fd)))
-#  endif
-	    && p_ek;
-}
-
-/*
- * Set "status" to STATUS_SENT.
- */
-    static void
-termrequest_sent(termrequest_T *status)
-{
-    status->tr_progress = STATUS_SENT;
-    status->tr_start = time(NULL);
-}
-
-/*
- * Return TRUE if any of the requests are in STATUS_SENT.
- */
-    static int
-termrequest_any_pending(void)
-{
-    int	    i;
-    time_t  now = time(NULL);
-
-    for (i = 0; all_termrequests[i] != NULL; ++i)
-    {
-	if (all_termrequests[i]->tr_progress == STATUS_SENT)
-	{
-	    if (all_termrequests[i]->tr_start > 0 && now > 0
-				    && all_termrequests[i]->tr_start + 2 < now)
-		// Sent the request more than 2 seconds ago and didn't get a
-		// response, assume it failed.
-		all_termrequests[i]->tr_progress = STATUS_FAIL;
-	    else
-		return TRUE;
-	}
-    }
-    return FALSE;
-}
-
-static int winpos_x = -1;
-static int winpos_y = -1;
-static int did_request_winpos = 0;
-
-# if defined(FEAT_EVAL) || defined(FEAT_TERMINAL) || defined(PROTO)
-/*
- * Try getting the Vim window position from the terminal.
- * Returns OK or FAIL.
- */
-    int
-term_get_winpos(int *x, int *y, varnumber_T timeout)
-{
-    int count = 0;
-    int prev_winpos_x = winpos_x;
-    int prev_winpos_y = winpos_y;
-
-    if (*T_CGP == NUL || !can_get_termresponse())
-	return FAIL;
-    winpos_x = -1;
-    winpos_y = -1;
-    ++did_request_winpos;
-    termrequest_sent(&winpos_status);
-    OUT_STR(T_CGP);
-    out_flush();
-
-    // Try reading the result for "timeout" msec.
-    while (count++ <= timeout / 10 && !got_int)
-    {
-	(void)vpeekc_nomap();
-	if (winpos_x >= 0 && winpos_y >= 0)
-	{
-	    *x = winpos_x;
-	    *y = winpos_y;
-	    return OK;
-	}
-	ui_delay(10L, FALSE);
-    }
-    // Do not reset "did_request_winpos", if we timed out the response might
-    // still come later and we must consume it.
-
-    winpos_x = prev_winpos_x;
-    winpos_y = prev_winpos_y;
-    if (timeout < 10 && prev_winpos_y >= 0 && prev_winpos_x >= 0)
-    {
-	// Polling: return previous values if we have them.
-	*x = winpos_x;
-	*y = winpos_y;
-	return OK;
-    }
-
-    return FALSE;
-}
-#  endif
-# endif
-
-    void
-term_set_winsize(int height, int width)
-{
-    OUT_STR(tgoto((char *)T_CWS, width, height));
-}
-#endif
-
-    static void
-term_color(char_u *s, int n)
-{
-    char	buf[20];
-    int		i = *s == CSI ? 1 : 2;
-		// index in s[] just after <Esc>[ or CSI
-
-    // Special handling of 16 colors, because termcap can't handle it
-    // Also accept "\e[3%dm" for TERMINFO, it is sometimes used
-    // Also accept CSI instead of <Esc>[
-    if (n >= 8 && t_colors >= 16
-	      && ((s[0] == ESC && s[1] == '[')
-#if defined(FEAT_VTP) && defined(FEAT_TERMGUICOLORS)
-		  || (s[0] == ESC && s[1] == '|')
-#endif
-		  || (s[0] == CSI && (i = 1) == 1))
-	      && s[i] != NUL
-	      && (STRCMP(s + i + 1, "%p1%dm") == 0
-		  || STRCMP(s + i + 1, "%dm") == 0)
-	      && (s[i] == '3' || s[i] == '4'))
-    {
-#ifdef TERMINFO
-	char *format = "%s%s%%p1%%dm";
-#else
-	char *format = "%s%s%%dm";
-#endif
-	char *lead = i == 2 ? (
-#if defined(FEAT_VTP) && defined(FEAT_TERMGUICOLORS)
-		    s[1] == '|' ? "\033|" :
-#endif
-		    "\033[") : "\233";
-	char *tail = s[i] == '3' ? (n >= 16 ? "38;5;" : "9")
-				 : (n >= 16 ? "48;5;" : "10");
-
-	sprintf(buf, format, lead, tail);
-	OUT_STR(tgoto(buf, 0, n >= 16 ? n : n - 8));
-    }
-    else
-	OUT_STR(tgoto((char *)s, 0, n));
-}
-
-    void
-term_fg_color(int n)
-{
-    // Use "AF" termcap entry if present, "Sf" entry otherwise
-    if (*T_CAF)
-	term_color(T_CAF, n);
-    else if (*T_CSF)
-	term_color(T_CSF, n);
-}
-
-    void
-term_bg_color(int n)
-{
-    // Use "AB" termcap entry if present, "Sb" entry otherwise
-    if (*T_CAB)
-	term_color(T_CAB, n);
-    else if (*T_CSB)
-	term_color(T_CSB, n);
-}
-
-    void
-term_ul_color(int n)
-{
-    if (*T_CAU)
-	term_color(T_CAU, n);
-}
-
-/*
- * Return "dark" or "light" depending on the kind of terminal.
- * This is just guessing!  Recognized are:
- * "linux"	    Linux console
- * "screen.linux"   Linux console with screen
- * "cygwin.*"	    Cygwin shell
- * "putty.*"	    Putty program
- * We also check the COLORFGBG environment variable, which is set by
- * rxvt and derivatives. This variable contains either two or three
- * values separated by semicolons; we want the last value in either
- * case. If this value is 0-6 or 8, our background is dark.
- */
-    char_u *
-term_bg_default(void)
-{
-#if defined(MSWIN)
-    // DOS console is nearly always black
-    return (char_u *)"dark";
-#else
-    char_u	*p;
-
-    if (STRCMP(T_NAME, "linux") == 0
-	    || STRCMP(T_NAME, "screen.linux") == 0
-	    || STRNCMP(T_NAME, "cygwin", 6) == 0
-	    || STRNCMP(T_NAME, "putty", 5) == 0
-	    || ((p = mch_getenv((char_u *)"COLORFGBG")) != NULL
-		&& (p = vim_strrchr(p, ';')) != NULL
-		&& ((p[1] >= '0' && p[1] <= '6') || p[1] == '8')
-		&& p[2] == NUL))
-	return (char_u *)"dark";
-    return (char_u *)"light";
-#endif
-}
-
-#if defined(FEAT_TERMGUICOLORS) || defined(PROTO)
-
-#define RED(rgb)   (((long_u)(rgb) >> 16) & 0xFF)
-#define GREEN(rgb) (((long_u)(rgb) >>  8) & 0xFF)
-#define BLUE(rgb)  (((long_u)(rgb)      ) & 0xFF)
-
-    static void
-term_rgb_color(char_u *s, guicolor_T rgb)
-{
-#define MAX_COLOR_STR_LEN 100
-    char	buf[MAX_COLOR_STR_LEN];
-
-    if (*s == NUL)
-	return;
-    vim_snprintf(buf, MAX_COLOR_STR_LEN,
-				  (char *)s, RED(rgb), GREEN(rgb), BLUE(rgb));
-#ifdef FEAT_VTP
-    if (use_vtp() && (p_tgc || t_colors >= 256))
-    {
-	out_flush();
-	buf[1] = '[';
-	vtp_printf(buf);
-    }
-    else
-#endif
-	OUT_STR(buf);
-}
-
-    void
-term_fg_rgb_color(guicolor_T rgb)
-{
-    if (rgb != INVALCOLOR)
-	term_rgb_color(T_8F, rgb);
-}
-
-    void
-term_bg_rgb_color(guicolor_T rgb)
-{
-    if (rgb != INVALCOLOR)
-	term_rgb_color(T_8B, rgb);
-}
-
-    void
-term_ul_rgb_color(guicolor_T rgb)
-{
-# ifdef FEAT_TERMRESPONSE
-    // If the user explicitly sets t_8u then use it.  Otherwise wait for
-    // termresponse to be received, which is when t_8u would be set and a
-    // redraw is needed if it was used.
-    if (!option_was_set((char_u *)"t_8u") && write_t_8u_state != OK)
-	write_t_8u_state = MAYBE;
-    else
-# endif
-	term_rgb_color(T_8U, rgb);
-}
-#endif
-
-#if (defined(UNIX) || defined(VMS) || defined(MACOS_X)) || defined(PROTO)
-/*
- * Generic function to set window title, using t_ts and t_fs.
- */
-    void
-term_settitle(char_u *title)
-{
-    MAY_WANT_TO_LOG_THIS;
-
-    // t_ts takes one argument: column in status line
-    OUT_STR(tgoto((char *)T_TS, 0, 0));	// set title start
-    out_str_nf(title);
-    out_str(T_FS);			// set title end
-    out_flush();
-}
-
-/*
- * Tell the terminal to push (save) the title and/or icon, so that it can be
- * popped (restored) later.
- */
-    void
-term_push_title(int which)
-{
-    if ((which & SAVE_RESTORE_TITLE) && T_CST != NULL && *T_CST != NUL)
-    {
-	OUT_STR(T_CST);
-	out_flush();
-    }
-
-    if ((which & SAVE_RESTORE_ICON) && T_SSI != NULL && *T_SSI != NUL)
-    {
-	OUT_STR(T_SSI);
-	out_flush();
-    }
-}
-
-/*
- * Tell the terminal to pop the title and/or icon.
- */
-    void
-term_pop_title(int which)
-{
-    if ((which & SAVE_RESTORE_TITLE) && T_CRT != NULL && *T_CRT != NUL)
-    {
-	OUT_STR(T_CRT);
-	out_flush();
-    }
-
-    if ((which & SAVE_RESTORE_ICON) && T_SRI != NULL && *T_SRI != NUL)
-    {
-	OUT_STR(T_SRI);
-	out_flush();
-    }
-}
-#endif
-
-/*
- * Make sure we have a valid set or terminal options.
- * Replace all entries that are NULL by empty_option
- */
-    void
-ttest(int pairs)
-{
-    char_u *env_colors;
-
-    check_options();		    // make sure no options are NULL
-
-    /*
-     * MUST have "cm": cursor motion.
-     */
-    if (*T_CM == NUL)
-	emsg(_(e_terminal_capability_cm_required));
-
-    /*
-     * if "cs" defined, use a scroll region, it's faster.
-     */
-    if (*T_CS != NUL)
-	scroll_region = TRUE;
-    else
-	scroll_region = FALSE;
-
-    if (pairs)
-    {
-	/*
-	 * optional pairs
-	 */
-	// TP goes to normal mode for TI (invert) and TB (bold)
-	if (*T_ME == NUL)
-	    T_ME = T_MR = T_MD = T_MB = empty_option;
-	if (*T_SO == NUL || *T_SE == NUL)
-	    T_SO = T_SE = empty_option;
-	if (*T_US == NUL || *T_UE == NUL)
-	    T_US = T_UE = empty_option;
-	if (*T_CZH == NUL || *T_CZR == NUL)
-	    T_CZH = T_CZR = empty_option;
-
-	// T_VE is needed even though T_VI is not defined
-	if (*T_VE == NUL)
-	    T_VI = empty_option;
-
-	// if 'mr' or 'me' is not defined use 'so' and 'se'
-	if (*T_ME == NUL)
-	{
-	    T_ME = T_SE;
-	    T_MR = T_SO;
-	    T_MD = T_SO;
-	}
-
-	// if 'so' or 'se' is not defined use 'mr' and 'me'
-	if (*T_SO == NUL)
-	{
-	    T_SE = T_ME;
-	    if (*T_MR == NUL)
-		T_SO = T_MD;
-	    else
-		T_SO = T_MR;
-	}
-
-	// if 'ZH' or 'ZR' is not defined use 'mr' and 'me'
-	if (*T_CZH == NUL)
-	{
-	    T_CZR = T_ME;
-	    if (*T_MR == NUL)
-		T_CZH = T_MD;
-	    else
-		T_CZH = T_MR;
-	}
-
-	// "Sb" and "Sf" come in pairs
-	if (*T_CSB == NUL || *T_CSF == NUL)
-	{
-	    T_CSB = empty_option;
-	    T_CSF = empty_option;
-	}
-
-	// "AB" and "AF" come in pairs
-	if (*T_CAB == NUL || *T_CAF == NUL)
-	{
-	    T_CAB = empty_option;
-	    T_CAF = empty_option;
-	}
-
-	// if 'Sb' and 'AB' are not defined, reset "Co"
-	if (*T_CSB == NUL && *T_CAB == NUL)
-	    free_one_termoption(T_CCO);
-
-	// Set 'weirdinvert' according to value of 't_xs'
-	p_wiv = (*T_XS != NUL);
-    }
-    need_gather = TRUE;
-
-    // Set t_colors to the value of $COLORS or t_Co.  Ignore $COLORS in the
-    // GUI.
-    t_colors = atoi((char *)T_CCO);
-#ifdef FEAT_GUI
-    if (!gui.in_use)
-#endif
-    {
-	env_colors = mch_getenv((char_u *)"COLORS");
-	if (env_colors != NULL && isdigit(*env_colors))
-	{
-	    int colors = atoi((char *)env_colors);
-
-	    if (colors != t_colors)
-		set_color_count(colors);
-	}
-    }
-}
-
-#if (defined(FEAT_GUI) && (defined(FEAT_MENU) || !defined(USE_ON_FLY_SCROLL))) \
-	|| defined(PROTO)
-/*
- * Represent the given long_u as individual bytes, with the most significant
- * byte first, and store them in dst.
- */
-    void
-add_long_to_buf(long_u val, char_u *dst)
-{
-    int	    i;
-    int	    shift;
-
-    for (i = 1; i <= (int)sizeof(long_u); i++)
-    {
-	shift = 8 * (sizeof(long_u) - i);
-	dst[i - 1] = (char_u) ((val >> shift) & 0xff);
-    }
-}
-
-/*
- * Interpret the next string of bytes in buf as a long integer, with the most
- * significant byte first.  Note that it is assumed that buf has been through
- * inchar(), so that NUL and K_SPECIAL will be represented as three bytes each.
- * Puts result in val, and returns the number of bytes read from buf
- * (between sizeof(long_u) and 2 * sizeof(long_u)), or -1 if not enough bytes
- * were present.
- */
-    static int
-get_long_from_buf(char_u *buf, long_u *val)
-{
-    int	    len;
-    char_u  bytes[sizeof(long_u)];
-    int	    i;
-    int	    shift;
-
-    *val = 0;
-    len = get_bytes_from_buf(buf, bytes, (int)sizeof(long_u));
-    if (len == -1)
-	return -1;
-    for (i = 0; i < (int)sizeof(long_u); i++)
-    {
-	shift = 8 * (sizeof(long_u) - 1 - i);
-	*val += (long_u)bytes[i] << shift;
-    }
-    return len;
-}
-#endif
-
-/*
- * Read the next num_bytes bytes from buf, and store them in bytes.  Assume
- * that buf has been through inchar().	Returns the actual number of bytes used
- * from buf (between num_bytes and num_bytes*2), or -1 if not enough bytes were
- * available.
- */
-    int
-get_bytes_from_buf(char_u *buf, char_u *bytes, int num_bytes)
-{
-    int	    len = 0;
-    int	    i;
-    char_u  c;
-
-    for (i = 0; i < num_bytes; i++)
-    {
-	if ((c = buf[len++]) == NUL)
-	    return -1;
-	if (c == K_SPECIAL)
-	{
-	    if (buf[len] == NUL || buf[len + 1] == NUL)	    // cannot happen?
-		return -1;
-	    if (buf[len++] == (int)KS_ZERO)
-		c = NUL;
-	    // else it should be KS_SPECIAL; when followed by KE_FILLER c is
-	    // K_SPECIAL, or followed by KE_CSI and c must be CSI.
-	    if (buf[len++] == (int)KE_CSI)
-		c = CSI;
-	}
-	else if (c == CSI && buf[len] == KS_EXTRA
-					       && buf[len + 1] == (int)KE_CSI)
-	    // CSI is stored as CSI KS_SPECIAL KE_CSI to avoid confusion with
-	    // the start of a special key, see add_to_input_buf_csi().
-	    len += 2;
-	bytes[i] = c;
-    }
-    return len;
-}
-
-/*
- * Check if the new shell size is valid, correct it if it's too small or way
- * too big.
- */
-    void
-check_shellsize(void)
-{
-    if (Rows < min_rows())	// need room for one window and command line
-	Rows = min_rows();
-    limit_screen_size();
-
-    // make sure these values are not invalid
-    if (cmdline_row >= Rows)
-	cmdline_row = Rows - 1;
-    if (msg_row >= Rows)
-	msg_row = Rows - 1;
-}
-
-/*
- * Limit Rows and Columns to avoid an overflow in Rows * Columns.
- */
-    void
-limit_screen_size(void)
-{
-    if (Columns < MIN_COLUMNS)
-	Columns = MIN_COLUMNS;
-    else if (Columns > 10000)
-	Columns = 10000;
-    if (Rows > 1000)
-	Rows = 1000;
-}
-
-/*
- * Invoked just before the screen structures are going to be (re)allocated.
- */
-    void
-win_new_shellsize(void)
-{
-    static int	old_Rows = 0;
-    static int	old_Columns = 0;
-
-    if (old_Rows != Rows || old_Columns != Columns)
-	ui_new_shellsize();
-    if (old_Rows != Rows)
-    {
-	// If 'window' uses the whole screen, keep it using that.
-	// Don't change it when set with "-w size" on the command line.
-	if (p_window == old_Rows - 1
-		    || (old_Rows == 0 && !option_was_set((char_u *)"window")))
-	    p_window = Rows - 1;
-	old_Rows = Rows;
-	shell_new_rows();	// update window sizes
-    }
-    if (old_Columns != Columns)
-    {
-	old_Columns = Columns;
-	shell_new_columns();	// update window sizes
-    }
-}
-
-/*
- * Call this function when the Vim shell has been resized in any way.
- * Will obtain the current size and redraw (also when size didn't change).
- */
-    void
-shell_resized(void)
-{
-    set_shellsize(0, 0, FALSE);
-}
-
-/*
- * Check if the shell size changed.  Handle a resize.
- * When the size didn't change, nothing happens.
- */
-    void
-shell_resized_check(void)
-{
-    int		old_Rows = Rows;
-    int		old_Columns = Columns;
-
-    if (exiting
-#ifdef FEAT_GUI
-	    // Do not get the size when executing a shell command during
-	    // startup.
-	    || gui.starting
-#endif
-	    )
-	return;
-
-    (void)ui_get_shellsize();
-    check_shellsize();
-    if (old_Rows != Rows || old_Columns != Columns)
-	shell_resized();
-}
-
-/*
- * Set size of the Vim shell.
- * If 'mustset' is TRUE, we must set Rows and Columns, do not get the real
- * window size (this is used for the :win command).
- * If 'mustset' is FALSE, we may try to get the real window size and if
- * it fails use 'width' and 'height'.
- */
-    static void
-set_shellsize_inner(int width, int height, int mustset)
-{
-    if (updating_screen)
-	// resizing while in update_screen() may cause a crash
-	return;
-
-    // curwin->w_buffer can be NULL when we are closing a window and the
-    // buffer (or window) has already been closed and removing a scrollbar
-    // causes a resize event. Don't resize then, it will happen after entering
-    // another buffer.
-    if (curwin->w_buffer == NULL || curwin->w_lines == NULL)
-	return;
-
-#ifdef AMIGA
-    out_flush();	    // must do this before mch_get_shellsize() for
-			    // some obscure reason
-#endif
-
-    if (mustset || (ui_get_shellsize() == FAIL && height != 0))
-    {
-	Rows = height;
-	Columns = width;
-	check_shellsize();
-	ui_set_shellsize(mustset);
-    }
-    else
-	check_shellsize();
-
-    // The window layout used to be adjusted here, but it now happens in
-    // screenalloc() (also invoked from screenclear()).  That is because the
-    // "busy" check above may skip this, but not screenalloc().
-
-    if (State != MODE_ASKMORE && State != MODE_EXTERNCMD
-						      && State != MODE_CONFIRM)
-	screenclear();
-    else
-	screen_start();	    // don't know where cursor is now
-
-    if (starting != NO_SCREEN)
-    {
-	maketitle();
-
-	changed_line_abv_curs();
-	invalidate_botline();
-
-	/*
-	 * We only redraw when it's needed:
-	 * - While at the more prompt or executing an external command, don't
-	 *   redraw, but position the cursor.
-	 * - While editing the command line, only redraw that.
-	 * - in Ex mode, don't redraw anything.
-	 * - Otherwise, redraw right now, and position the cursor.
-	 * Always need to call update_screen() or screenalloc(), to make
-	 * sure Rows/Columns and the size of ScreenLines[] is correct!
-	 */
-	if (State == MODE_ASKMORE || State == MODE_EXTERNCMD
-				     || State == MODE_CONFIRM || exmode_active)
-	{
-	    screenalloc(FALSE);
-	    repeat_message();
-	}
-	else
-	{
-	    if (curwin->w_p_scb)
-		do_check_scrollbind(TRUE);
-	    if (State & MODE_CMDLINE)
-	    {
-		update_screen(UPD_NOT_VALID);
-		redrawcmdline();
-	    }
-	    else
-	    {
-		update_topline();
-		if (pum_visible())
-		{
-		    redraw_later(UPD_NOT_VALID);
-		    ins_compl_show_pum();
-		}
-		update_screen(UPD_NOT_VALID);
-		if (redrawing())
-		    setcursor();
-	    }
-	}
-	cursor_on();	    // redrawing may have switched it off
-    }
-    out_flush();
-}
-
-    void
-set_shellsize(int width, int height, int mustset)
-{
-    static int	busy = FALSE;
-    static int	do_run = FALSE;
-
-    if (width < 0 || height < 0)    // just checking...
-	return;
-
-    if (State == MODE_HITRETURN || State == MODE_SETWSIZE)
-    {
-	// postpone the resizing
-	State = MODE_SETWSIZE;
-	return;
-    }
-
-    // Avoid recursiveness.  This can happen when setting the window size
-    // causes another window-changed signal or when two SIGWINCH signals come
-    // very close together.  There needs to be another run then after the
-    // current one is done to pick up the latest size.
-    do_run = TRUE;
-    if (busy)
-	return;
-
-    while (do_run)
-    {
-	do_run = FALSE;
-	busy = TRUE;
-	set_shellsize_inner(width, height, mustset);
-	busy = FALSE;
-    }
-}
-
-/*
- * Output T_CTE, the t_TE termcap entry, and handle expected effects.
- * The code possibly disables modifyOtherKeys and the Kitty keyboard protocol.
- */
-    void
-out_str_t_TE(void)
-{
-    out_str(T_CTE);
-
-    // The seenModifyOtherKeys flag is not reset here.  We do expect t_TE to
-    // disable modifyOtherKeys, but until Xterm version 377 there is no way to
-    // detect it's enabled again after the following t_TI.  We assume that when
-    // seenModifyOtherKeys was set before it will still be valid.
-
-    // When the modifyOtherKeys level is detected to be 2 we expect t_TE to
-    // disable it.  Remembering that it was detected to be enabled is useful in
-    // some situations.
-    // The following t_TI is expected to request the state and then
-    // modify_otherkeys_state will be set again.
-    if (modify_otherkeys_state == MOKS_ENABLED
-	    || modify_otherkeys_state == MOKS_DISABLED)
-	modify_otherkeys_state = MOKS_DISABLED;
-    else if (modify_otherkeys_state != MOKS_INITIAL)
-	modify_otherkeys_state = MOKS_AFTER_T_TE;
-
-    // When the kitty keyboard protocol is enabled we expect t_TE to disable
-    // it.  Remembering that it was detected to be enabled is useful in some
-    // situations.
-    // The following t_TI is expected to request the state and then
-    // kitty_protocol_state will be set again.
-    if (kitty_protocol_state == KKPS_ENABLED
-	    || kitty_protocol_state == KKPS_DISABLED)
-	kitty_protocol_state = KKPS_DISABLED;
-    else
-	kitty_protocol_state = KKPS_AFTER_T_TE;
-}
-
-static int send_t_RK = FALSE;
-
-/*
- * Output T_TI and setup for what follows.
- */
-    void
-out_str_t_TI(void)
-{
-    out_str(T_CTI);
-
-    // Send t_RK when there is no more work to do.
-    send_t_RK = TRUE;
-}
-
-/*
- * Output T_BE, but only when t_PS and t_PE are set.
- */
-    void
-out_str_t_BE(void)
-{
-    char_u *p;
-
-    if (T_BE == NULL || *T_BE == NUL
-	    || (p = find_termcode((char_u *)"PS")) == NULL || *p == NUL
-	    || (p = find_termcode((char_u *)"PE")) == NULL || *p == NUL)
-	return;
-    out_str(T_BE);
-}
-
-/*
- * If t_TI was recently sent and there is no typeahead or work to do, now send
- * t_RK.  This is postponed to avoid the response arriving in a shell command
- * or after Vim exits.
- */
-    void
-may_send_t_RK(void)
-{
-    if (send_t_RK
-	    && !work_pending()
-	    && !ex_normal_busy
-#ifdef FEAT_EVAL
-	    && !in_feedkeys
-#endif
-	    && !exiting)
-    {
-	send_t_RK = FALSE;
-	out_str(T_CRK);
-	out_flush();
-    }
-}
-
-/*
- * Set the terminal to TMODE_RAW (for Normal mode) or TMODE_COOK (for external
- * commands and Ex mode).
- */
-    void
-settmode(tmode_T tmode)
-{
-#ifdef FEAT_GUI
-    // don't set the term where gvim was started to any mode
-    if (gui.in_use)
-	return;
-#endif
-
-    if (!full_screen)
-	return;
-
-    /*
-     * When returning after calling a shell cur_tmode is TMODE_UNKNOWN,
-     * set the terminal to raw mode, even though we think it already is,
-     * because the shell program may have reset the terminal mode.
-     * When we think the terminal is normal, don't try to set it to
-     * normal again, because that causes problems (logout!) on some
-     * machines.
-     */
-    if (tmode != cur_tmode)
-    {
-#ifdef FEAT_TERMRESPONSE
-# ifdef FEAT_GUI
-	if (!gui.in_use && !gui.starting)
-# endif
-	{
-	    // May need to check for T_CRV response and termcodes, it
-	    // doesn't work in Cooked mode, an external program may get
-	    // them.
-	    if (tmode != TMODE_RAW && termrequest_any_pending())
-		(void)vpeekc_nomap();
-	    check_for_codes_from_term();
-	}
-#endif
-	if (tmode != TMODE_RAW)
-	    mch_setmouse(FALSE);	// switch mouse off
-
-	// Disable bracketed paste and modifyOtherKeys in cooked mode.
-	// Avoid doing this too often, on some terminals the codes are not
-	// handled properly.
-	if (termcap_active && tmode != TMODE_SLEEP
-		&& cur_tmode != TMODE_SLEEP)
-	{
-	    MAY_WANT_TO_LOG_THIS;
-
-	    if (tmode != TMODE_RAW)
-	    {
-		out_str(T_BD);	// disable bracketed paste mode
-		out_str_t_TE();	// possibly disables modifyOtherKeys
-	    }
-	    else
-	    {
-		out_str_t_BE();	// enable bracketed paste mode (should
-				// be before mch_settmode().
-		out_str_t_TI();	// possibly enables modifyOtherKeys
-	    }
-	}
-	out_flush();
-	mch_settmode(tmode);	// machine specific function
-	cur_tmode = tmode;
-	if (tmode == TMODE_RAW)
-	    setmouse();		// may switch mouse on
-	out_flush();
-    }
-#ifdef FEAT_TERMRESPONSE
-    may_req_termresponse();
-#endif
-}
-
-    void
-starttermcap(void)
-{
-    if (!full_screen || termcap_active)
-	return;
-
-    MAY_WANT_TO_LOG_THIS;
-
-    out_str(T_TI);			// start termcap mode
-    out_str_t_TI();			// start "raw" mode
-    out_str(T_KS);			// start "keypad transmit" mode
-    out_str_t_BE();			// enable bracketed paste mode
-
-#if defined(UNIX) || defined(VMS)
-    // Enable xterm's focus reporting mode when 'esckeys' is set.
-    if (p_ek && *T_FE != NUL)
-	out_str(T_FE);
-#endif
-
-    out_flush();
-    termcap_active = TRUE;
-    screen_start();			// don't know where cursor is now
-#ifdef FEAT_TERMRESPONSE
-# ifdef FEAT_GUI
-    if (!gui.in_use && !gui.starting)
-# endif
-    {
-	may_req_termresponse();
-	// Immediately check for a response.  If t_Co changes, we don't
-	// want to redraw with wrong colors first.
-	if (crv_status.tr_progress == STATUS_SENT)
-	    check_for_codes_from_term();
-    }
-#endif
-}
-
-    void
-stoptermcap(void)
-{
-    screen_stop_highlight();
-    reset_cterm_colors();
-
-    if (!termcap_active)
-	return;
-
-#ifdef FEAT_TERMRESPONSE
-# ifdef FEAT_GUI
-    if (!gui.in_use && !gui.starting)
-# endif
-    {
-	// May need to discard T_CRV, T_U7 or T_RBG response.
-	if (termrequest_any_pending())
-	{
-# ifdef UNIX
-	    // Give the terminal a chance to respond.
-	    mch_delay(100L, 0);
-# endif
-# ifdef TCIFLUSH
-	    // Discard data received but not read.
-	    if (exiting)
-		tcflush(fileno(stdin), TCIFLUSH);
-# endif
-	}
-	// Check for termcodes first, otherwise an external program may
-	// get them.
-	check_for_codes_from_term();
-    }
-#endif
-    MAY_WANT_TO_LOG_THIS;
-
-#if defined(UNIX) || defined(VMS)
-    // Disable xterm's focus reporting mode if 'esckeys' is set.
-    if (p_ek && *T_FD != NUL)
-	out_str(T_FD);
-#endif
-
-    out_str(T_BD);			// disable bracketed paste mode
-    out_str(T_KE);			// stop "keypad transmit" mode
-    out_flush();
-    termcap_active = FALSE;
-
-    // Output t_te before t_TE, t_te may switch between main and alternate
-    // screen and following codes may work on the active screen only.
-    //
-    // When using the Kitty keyboard protocol the main and alternate screen
-    // use a separate state.  If we are (or were) using the Kitty keyboard
-    // protocol and t_te is not empty (possibly switching screens) then
-    // output t_TE both before and after outputting t_te.
-    if (*T_TE != NUL && (kitty_protocol_state == KKPS_ENABLED
-		|| kitty_protocol_state == KKPS_DISABLED))
-	out_str_t_TE();		// probably disables the kitty keyboard
-				// protocol
-
-    out_str(T_TE);			// stop termcap mode
-    cursor_on();			// just in case it is still off
-    out_str_t_TE();			// stop "raw" mode, modifyOtherKeys and
-					// Kitty keyboard protocol
-    screen_start();			// don't know where cursor is now
-    out_flush();
-}
-
-#if defined(FEAT_TERMRESPONSE) || defined(PROTO)
-/*
- * Request version string (for xterm) when needed.
- * Only do this after switching to raw mode, otherwise the result will be
- * echoed.
- * Only do this after startup has finished, to avoid that the response comes
- * while executing "-c !cmd" or even after "-c quit".
- * Only do this after termcap mode has been started, otherwise the codes for
- * the cursor keys may be wrong.
- * Only do this when 'esckeys' is on, otherwise the response causes trouble in
- * Insert mode.
- * On Unix only do it when both output and input are a tty (avoid writing
- * request to terminal while reading from a file).
- * The result is caught in check_termcode().
- */
-    void
-may_req_termresponse(void)
-{
-    if (crv_status.tr_progress == STATUS_GET
-	    && can_get_termresponse()
-	    && starting == 0
-	    && *T_CRV != NUL)
-    {
-	MAY_WANT_TO_LOG_THIS;
-	LOG_TR(("Sending CRV request"));
-	out_str(T_CRV);
-	termrequest_sent(&crv_status);
-	// check for the characters now, otherwise they might be eaten by
-	// get_keystroke()
-	out_flush();
-	(void)vpeekc_nomap();
-    }
-}
-
-/*
- * Send sequences to the terminal and check with t_u7 how the cursor moves, to
- * find out properties of the terminal.
- * Note that this goes out before T_CRV, so that the result can be used when
- * the termresponse arrives.
- */
-    void
-check_terminal_behavior(void)
-{
-    int	    did_send = FALSE;
-
-    if (!can_get_termresponse() || starting != 0 || *T_U7 == NUL)
-	return;
-
-    if (u7_status.tr_progress == STATUS_GET
-	    && !option_was_set((char_u *)"ambiwidth"))
-    {
-	char_u	buf[16];
-
-	// Ambiguous width check.
-	// Check how the terminal treats ambiguous character width (UAX #11).
-	// First, we move the cursor to (1, 0) and print a test ambiguous
-	// character \u25bd (WHITE DOWN-POINTING TRIANGLE) and then query
-	// the current cursor position.  If the terminal treats \u25bd as
-	// single width, the position is (1, 1), or if it is treated as double
-	// width, that will be (1, 2).  This function has the side effect that
-	// changes cursor position, so it must be called immediately after
-	// entering termcap mode.
-	MAY_WANT_TO_LOG_THIS;
-	LOG_TR(("Sending request for ambiwidth check"));
-	// Do this in the second row.  In the first row the returned sequence
-	// may be CSI 1;2R, which is the same as <S-F3>.
-	term_windgoto(1, 0);
-	buf[mb_char2bytes(0x25bd, buf)] = NUL;
-	out_str(buf);
-	out_str(T_U7);
-	termrequest_sent(&u7_status);
-	out_flush();
-	did_send = TRUE;
-
-	// This overwrites a few characters on the screen, a redraw is needed
-	// after this. Clear them out for now.
-	screen_stop_highlight();
-	term_windgoto(1, 0);
-	out_str((char_u *)"  ");
-	line_was_clobbered(1);
-    }
-
-    if (xcc_status.tr_progress == STATUS_GET && Rows > 2)
-    {
-	// 2. Check compatibility with xterm.
-	// We move the cursor to (2, 0), print a test sequence and then query
-	// the current cursor position.  If the terminal properly handles
-	// unknown DCS string and CSI sequence with intermediate byte, the test
-	// sequence is ignored and the cursor does not move.  If the terminal
-	// handles test sequence incorrectly, a garbage string is displayed and
-	// the cursor does move.
-	MAY_WANT_TO_LOG_THIS;
-	LOG_TR(("Sending xterm compatibility test sequence."));
-	// Do this in the third row.  Second row is used by ambiguous
-	// character width check.
-	term_windgoto(2, 0);
-	// send the test DCS string.
-	out_str((char_u *)"\033Pzz\033\\");
-	// send the test CSI sequence with intermediate byte.
-	out_str((char_u *)"\033[0%m");
-	out_str(T_U7);
-	termrequest_sent(&xcc_status);
-	out_flush();
-	did_send = TRUE;
-
-	// If the terminal handles test sequence incorrectly, garbage text is
-	// displayed. Clear them out for now.
-	screen_stop_highlight();
-	term_windgoto(2, 0);
-	out_str((char_u *)"           ");
-	line_was_clobbered(2);
-    }
-
-    if (did_send)
-    {
-	term_windgoto(0, 0);
-
-	// Need to reset the known cursor position.
-	screen_start();
-
-	// check for the characters now, otherwise they might be eaten by
-	// get_keystroke()
-	out_flush();
-	(void)vpeekc_nomap();
-    }
-}
-
-/*
- * Similar to requesting the version string: Request the terminal background
- * color when it is the right moment.
- */
-    void
-may_req_bg_color(void)
-{
-    if (can_get_termresponse() && starting == 0)
-    {
-	int didit = FALSE;
-
-# ifdef FEAT_TERMINAL
-	// Only request foreground if t_RF is set.
-	if (rfg_status.tr_progress == STATUS_GET && *T_RFG != NUL)
-	{
-	    MAY_WANT_TO_LOG_THIS;
-	    LOG_TR(("Sending FG request"));
-	    out_str(T_RFG);
-	    termrequest_sent(&rfg_status);
-	    didit = TRUE;
-	}
-# endif
-
-	// Only request background if t_RB is set.
-	if (rbg_status.tr_progress == STATUS_GET && *T_RBG != NUL)
-	{
-	    MAY_WANT_TO_LOG_THIS;
-	    LOG_TR(("Sending BG request"));
-	    out_str(T_RBG);
-	    termrequest_sent(&rbg_status);
-	    didit = TRUE;
-	}
-
-	if (didit)
-	{
-	    // check for the characters now, otherwise they might be eaten by
-	    // get_keystroke()
-	    out_flush();
-	    (void)vpeekc_nomap();
-	}
-    }
-}
-
-# ifdef DEBUG_TERMRESPONSE
-    static void
-log_tr(const char *fmt, ...)
-{
-    static FILE *fd_tr = NULL;
-    static proftime_T start;
-    proftime_T now;
-    va_list ap;
-
-    if (fd_tr == NULL)
-    {
-	fd_tr = fopen("termresponse.log", "w");
-	profile_start(&start);
-    }
-    now = start;
-    profile_end(&now);
-    fprintf(fd_tr, "%s: %s ", profile_msg(&now),
-				must_redraw == UPD_NOT_VALID ? "NV"
-				     : must_redraw == UPD_CLEAR ? "CL" : "  ");
-    va_start(ap, fmt);
-    vfprintf(fd_tr, fmt, ap);
-    va_end(ap);
-    fputc('\n', fd_tr);
-    fflush(fd_tr);
-}
-# endif
-#endif
-
-/*
- * Return TRUE when saving and restoring the screen.
- */
-    int
-swapping_screen(void)
-{
-    return (full_screen && *T_TI != NUL);
-}
-
-/*
- * By outputting the 'cursor very visible' termcap code, for some windowed
- * terminals this makes the screen scrolled to the correct position.
- * Used when starting Vim or returning from a shell.
- */
-    void
-scroll_start(void)
-{
-    if (*T_VS == NUL || *T_CVS == NUL)
-	return;
-
-    MAY_WANT_TO_LOG_THIS;
-    out_str(T_VS);
-    out_str(T_CVS);
-    screen_start();		// don't know where cursor is now
-}
-
-// True if cursor is not visible
-static int cursor_is_off = FALSE;
-
-// True if cursor is not visible due to an ongoing cursor-less sleep
-static int cursor_is_asleep = FALSE;
-
-/*
- * Enable the cursor without checking if it's already enabled.
- */
-    void
-cursor_on_force(void)
-{
-    out_str(T_VE);
-    cursor_is_off = FALSE;
-    cursor_is_asleep = FALSE;
-}
-
-/*
- * Enable the cursor if it's currently off.
- */
-    void
-cursor_on(void)
-{
-    if (cursor_is_off && !cursor_is_asleep)
-	cursor_on_force();
-}
-
-/*
- * Disable the cursor.
- */
-    void
-cursor_off(void)
-{
-    if (full_screen && !cursor_is_off)
-    {
-	out_str(T_VI);	    // disable cursor
-	cursor_is_off = TRUE;
-    }
-}
-
-#ifdef FEAT_GUI
-/*
- * Check whether the cursor is invisible due to an ongoing cursor-less sleep
- */
-    int
-cursor_is_sleeping(void)
-{
-    return cursor_is_asleep;
-}
-#endif
-
-/*
- * Disable the cursor and mark it disabled by cursor-less sleep
- */
-    void
-cursor_sleep(void)
-{
-    cursor_is_asleep = TRUE;
-    cursor_off();
-}
-
-/*
- * Enable the cursor and mark it not disabled by cursor-less sleep
- */
-    void
-cursor_unsleep(void)
-{
-    cursor_is_asleep = FALSE;
-    cursor_on();
-}
-
-#if defined(CURSOR_SHAPE) || defined(PROTO)
-/*
- * Set cursor shape to match Insert or Replace mode.
- */
-    void
-term_cursor_mode(int forced)
-{
-    static int showing_mode = -1;
-    char_u *p;
-
-    // Only do something when redrawing the screen and we can restore the
-    // mode.
-    if (!full_screen || *T_CEI == NUL)
-    {
-# ifdef FEAT_TERMRESPONSE
-	if (forced && initial_cursor_shape > 0)
-	    // Restore to initial values.
-	    term_cursor_shape(initial_cursor_shape, initial_cursor_blink);
-# endif
-	return;
-    }
-
-    if ((State & MODE_REPLACE) == MODE_REPLACE)
-    {
-	if (forced || showing_mode != MODE_REPLACE)
-	{
-	    if (*T_CSR != NUL)
-		p = T_CSR;	// Replace mode cursor
-	    else
-		p = T_CSI;	// fall back to Insert mode cursor
-	    if (*p != NUL)
-	    {
-		out_str(p);
-		showing_mode = MODE_REPLACE;
-	    }
-	}
-    }
-    else if (State & MODE_INSERT)
-    {
-	if ((forced || showing_mode != MODE_INSERT) && *T_CSI != NUL)
-	{
-	    out_str(T_CSI);	    // Insert mode cursor
-	    showing_mode = MODE_INSERT;
-	}
-    }
-    else if (forced || showing_mode != MODE_NORMAL)
-    {
-	out_str(T_CEI);		    // non-Insert mode cursor
-	showing_mode = MODE_NORMAL;
-    }
-}
-
-# if defined(FEAT_TERMINAL) || defined(PROTO)
-    void
-term_cursor_color(char_u *color)
-{
-    if (*T_CSC == NUL)
-	return;
-
-    out_str(T_CSC);		// set cursor color start
-    out_str_nf(color);
-    out_str(T_CEC);		// set cursor color end
-    out_flush();
-}
-# endif
-
-    int
-blink_state_is_inverted(void)
-{
-#ifdef FEAT_TERMRESPONSE
-    return rbm_status.tr_progress == STATUS_GOT
-	&& rcs_status.tr_progress == STATUS_GOT
-		&& initial_cursor_blink != initial_cursor_shape_blink;
-#else
-    return FALSE;
-#endif
-}
-
-/*
- * "shape": 1 = block, 2 = underline, 3 = vertical bar
- */
-    void
-term_cursor_shape(int shape, int blink)
-{
-    if (*T_CSH != NUL)
-    {
-	OUT_STR(tgoto((char *)T_CSH, 0, shape * 2 - blink));
-	out_flush();
-    }
-    else
-    {
-	int do_blink = blink;
-
-	// t_SH is empty: try setting just the blink state.
-	// The blink flags are XORed together, if the initial blinking from
-	// style and shape differs, we need to invert the flag here.
-	if (blink_state_is_inverted())
-	    do_blink = !blink;
-
-	if (do_blink && *T_VS != NUL)
-	{
-	    out_str(T_VS);
-	    out_flush();
-	}
-	else if (!do_blink && *T_CVS != NUL)
-	{
-	    out_str(T_CVS);
-	    out_flush();
-	}
-    }
-}
-#endif
-
-/*
- * Set scrolling region for window 'wp'.
- * The region starts 'off' lines from the start of the window.
- * Also set the vertical scroll region for a vertically split window.  Always
- * the full width of the window, excluding the vertical separator.
- */
-    void
-scroll_region_set(win_T *wp, int off)
-{
-    OUT_STR(tgoto((char *)T_CS, W_WINROW(wp) + wp->w_height - 1,
-							 W_WINROW(wp) + off));
-    if (*T_CSV != NUL && wp->w_width != Columns)
-	OUT_STR(tgoto((char *)T_CSV, wp->w_wincol + wp->w_width - 1,
-							       wp->w_wincol));
-    screen_start();		    // don't know where cursor is now
-}
-
-/*
- * Reset scrolling region to the whole screen.
- */
-    void
-scroll_region_reset(void)
-{
-    OUT_STR(tgoto((char *)T_CS, (int)Rows - 1, 0));
-    if (*T_CSV != NUL)
-	OUT_STR(tgoto((char *)T_CSV, (int)Columns - 1, 0));
-    screen_start();		    // don't know where cursor is now
-}
-
-
-/*
- * List of terminal codes that are currently recognized.
- */
-
-static struct termcode
-{
-    char_u  name[2];	    // termcap name of entry
-    char_u  *code;	    // terminal code (in allocated memory)
-    int	    len;	    // STRLEN(code)
-    int	    modlen;	    // length of part before ";*~".
-} *termcodes = NULL;
-
-static int  tc_max_len = 0; // number of entries that termcodes[] can hold
-static int  tc_len = 0;	    // current number of entries in termcodes[]
-
-static int termcode_star(char_u *code, int len);
-
-    void
-clear_termcodes(void)
-{
-    while (tc_len > 0)
-	vim_free(termcodes[--tc_len].code);
-    VIM_CLEAR(termcodes);
-    tc_max_len = 0;
-
-#ifdef HAVE_TGETENT
-    BC = (char *)empty_option;
-    UP = (char *)empty_option;
-    PC = NUL;			// set pad character to NUL
-    ospeed = 0;
-#endif
-
-    need_gather = TRUE;		// need to fill termleader[]
-}
-
-#define ATC_FROM_TERM 55
-
-/*
- * For xterm we recognize special codes like "ESC[42;*X" and "ESC O*X" that
- * accept modifiers.
- * Set "termcodes[idx].modlen".
- */
-    static void
-adjust_modlen(int idx)
-{
-    termcodes[idx].modlen = 0;
-    int j = termcode_star(termcodes[idx].code, termcodes[idx].len);
-    if (j <= 0)
-	return;
-
-    termcodes[idx].modlen = termcodes[idx].len - 1 - j;
-    // For "CSI[@;X" the "@" is not included in "modlen".
-    if (termcodes[idx].code[termcodes[idx].modlen - 1] == '@')
-	--termcodes[idx].modlen;
-}
-
-/*
- * Add a new entry for "name[2]" to the list of terminal codes.
- * Note that "name" may not have a terminating NUL.
- * The list is kept alphabetical for ":set termcap"
- * "flags" is TRUE when replacing 7-bit by 8-bit controls is desired.
- * "flags" can also be ATC_FROM_TERM for got_code_from_term().
- */
-    void
-add_termcode(char_u *name, char_u *string, int flags)
-{
-    struct termcode *new_tc;
-    int		    i, j;
-    char_u	    *s;
-    int		    len;
-#ifdef FEAT_EVAL
-    char	    *action = "Setting";
-#endif
-
-    if (string == NULL || *string == NUL)
-    {
-	del_termcode(name);
-	return;
-    }
-
-#if defined(MSWIN) && !defined(FEAT_GUI)
-    s = vim_strnsave(string, STRLEN(string) + 1);
-#else
-# ifdef VIMDLL
-    if (!gui.in_use)
-	s = vim_strnsave(string, STRLEN(string) + 1);
-    else
-# endif
-	s = vim_strsave(string);
-#endif
-    if (s == NULL)
-	return;
-
-    // Change leading <Esc>[ to CSI, change <Esc>O to <M-O>.
-    if (flags != 0 && flags != ATC_FROM_TERM && term_7to8bit(string) != 0)
-    {
-	STRMOVE(s, s + 1);
-	s[0] = term_7to8bit(string);
-    }
-
-#if defined(MSWIN) && (!defined(FEAT_GUI) || defined(VIMDLL))
-# ifdef VIMDLL
-    if (!gui.in_use)
-# endif
-    {
-	if (s[0] == K_NUL)
-	{
-	    STRMOVE(s + 1, s);
-	    s[1] = 3;
-	}
-    }
-#endif
-
-    len = (int)STRLEN(s);
-
-    need_gather = TRUE;		// need to fill termleader[]
-
-    /*
-     * need to make space for more entries
-     */
-    if (tc_len == tc_max_len)
-    {
-	tc_max_len += 20;
-	new_tc = ALLOC_MULT(struct termcode, tc_max_len);
-	if (new_tc == NULL)
-	{
-	    tc_max_len -= 20;
-	    vim_free(s);
-	    return;
-	}
-	for (i = 0; i < tc_len; ++i)
-	    new_tc[i] = termcodes[i];
-	vim_free(termcodes);
-	termcodes = new_tc;
-    }
-
-    /*
-     * Look for existing entry with the same name, it is replaced.
-     * Look for an existing entry that is alphabetical higher, the new entry
-     * is inserted in front of it.
-     */
-    for (i = 0; i < tc_len; ++i)
-    {
-	if (termcodes[i].name[0] < name[0])
-	    continue;
-	if (termcodes[i].name[0] == name[0])
-	{
-	    if (termcodes[i].name[1] < name[1])
-		continue;
-	    /*
-	     * Exact match: May replace old code.
-	     */
-	    if (termcodes[i].name[1] == name[1])
-	    {
-		if (flags == ATC_FROM_TERM && (j = termcode_star(
-				    termcodes[i].code, termcodes[i].len)) > 0)
-		{
-		    // Don't replace ESC[123;*X or ESC O*X with another when
-		    // invoked from got_code_from_term().
-		    if (len == termcodes[i].len - j
-			    && STRNCMP(s, termcodes[i].code, len - 1) == 0
-			    && s[len - 1]
-				   == termcodes[i].code[termcodes[i].len - 1])
-		    {
-			// They are equal but for the ";*": don't add it.
-#ifdef FEAT_EVAL
-			ch_log(NULL, "Termcap entry %c%c did not change",
-							     name[0], name[1]);
-#endif
-			vim_free(s);
-			return;
-		    }
-		}
-		else
-		{
-		    // Replace old code.
-#ifdef FEAT_EVAL
-		    ch_log(NULL, "Termcap entry %c%c was: %s",
-					  name[0], name[1], termcodes[i].code);
-#endif
-		    vim_free(termcodes[i].code);
-		    --tc_len;
-		    break;
-		}
-	    }
-	}
-	/*
-	 * Found alphabetical larger entry, move rest to insert new entry
-	 */
-#ifdef FEAT_EVAL
-	action = "Adding";
-#endif
-	for (j = tc_len; j > i; --j)
-	    termcodes[j] = termcodes[j - 1];
-	break;
-    }
-
-#ifdef FEAT_EVAL
-    ch_log(NULL, "%s termcap entry %c%c to %s", action, name[0], name[1], s);
-#endif
-    termcodes[i].name[0] = name[0];
-    termcodes[i].name[1] = name[1];
-    termcodes[i].code = s;
-    termcodes[i].len = len;
-    adjust_modlen(i);
-
-    ++tc_len;
-}
-
-/*
- * Some function keys may include modifiers, but the terminfo/termcap entries
- * do not indicate that.  Insert ";*" where we expect modifiers might appear.
- */
-    static void
-accept_modifiers_for_function_keys(void)
-{
-    regmatch_T regmatch;
-    CLEAR_FIELD(regmatch);
-    regmatch.rm_ic = TRUE;
-    regmatch.regprog = vim_regcomp((char_u *)"^\033[\\d\\+\\~$", RE_MAGIC);
-
-    for (int i = 0; i < tc_len; ++i)
-    {
-	if (regmatch.regprog == NULL)
-	    return;
-
-	// skip PasteStart and PasteEnd
-	if (termcodes[i].name[0] == 'P'
-		&& (termcodes[i].name[1] == 'S' || termcodes[i].name[1] == 'E'))
-	    continue;
-
-	char_u *s = termcodes[i].code;
-	if (s != NULL && vim_regexec(&regmatch, s, (colnr_T)0))
-	{
-	    size_t len = STRLEN(s);
-	    char_u *ns = alloc(len + 3);
-	    if (ns != NULL)
-	    {
-		mch_memmove(ns, s, len - 1);
-		mch_memmove(ns + len - 1, ";*~", 4);
-		vim_free(s);
-		termcodes[i].code = ns;
-		termcodes[i].len += 2;
-		adjust_modlen(i);
-	    }
-	}
-    }
-
-    vim_regfree(regmatch.regprog);
-}
-
-/*
- * Check termcode "code[len]" for ending in ;*X or *X.
- * The "X" can be any character.
- * Return 0 if not found, 2 for ;*X and 1 for *X.
- */
-    static int
-termcode_star(char_u *code, int len)
-{
-    // Shortest is <M-O>*X.  With ; shortest is <CSI>@;*X
-    if (len >= 3 && code[len - 2] == '*')
-    {
-	if (len >= 5 && code[len - 3] == ';')
-	    return 2;
-	else
-	    return 1;
-    }
-    return 0;
-}
-
-    char_u  *
-find_termcode(char_u *name)
-{
-    int	    i;
-
-    for (i = 0; i < tc_len; ++i)
-	if (termcodes[i].name[0] == name[0] && termcodes[i].name[1] == name[1])
-	    return termcodes[i].code;
-    return NULL;
-}
-
-    char_u *
-get_termcode(int i)
-{
-    if (i >= tc_len)
-	return NULL;
-    return &termcodes[i].name[0];
-}
-
-/*
- * Returns the length of the terminal code at index 'idx'.
- */
-    int
-get_termcode_len(int idx)
-{
-    return termcodes[idx].len;
-}
-
-    void
-del_termcode(char_u *name)
-{
-    int	    i;
-
-    if (termcodes == NULL)	// nothing there yet
-	return;
-
-    need_gather = TRUE;		// need to fill termleader[]
-
-    for (i = 0; i < tc_len; ++i)
-	if (termcodes[i].name[0] == name[0] && termcodes[i].name[1] == name[1])
-	{
-	    del_termcode_idx(i);
-	    return;
-	}
-    // not found. Give error message?
-}
-
-    static void
-del_termcode_idx(int idx)
-{
-    int		i;
-
-    vim_free(termcodes[idx].code);
-    --tc_len;
-    for (i = idx; i < tc_len; ++i)
-	termcodes[i] = termcodes[i + 1];
-}
-
-/*
- * Called when detected that the terminal sends 8-bit codes.
- * Convert all 7-bit codes to their 8-bit equivalent.
- */
-    static void
-switch_to_8bit(void)
-{
-    int		i;
-    int		c;
-
-    // Only need to do something when not already using 8-bit codes.
-    if (!term_is_8bit(T_NAME))
-    {
-	for (i = 0; i < tc_len; ++i)
-	{
-	    c = term_7to8bit(termcodes[i].code);
-	    if (c != 0)
-	    {
-		STRMOVE(termcodes[i].code + 1, termcodes[i].code + 2);
-		termcodes[i].code[0] = c;
-	    }
-	}
-	need_gather = TRUE;		// need to fill termleader[]
-    }
-    detected_8bit = TRUE;
-    LOG_TR(("Switching to 8 bit"));
-}
-
-#ifdef CHECK_DOUBLE_CLICK
-static linenr_T orig_topline = 0;
-# ifdef FEAT_DIFF
-static int orig_topfill = 0;
-# endif
-#endif
-#if defined(CHECK_DOUBLE_CLICK) || defined(PROTO)
-/*
- * Checking for double-clicks ourselves.
- * "orig_topline" is used to avoid detecting a double-click when the window
- * contents scrolled (e.g., when 'scrolloff' is non-zero).
- */
-/*
- * Set orig_topline.  Used when jumping to another window, so that a double
- * click still works.
- */
-    void
-set_mouse_topline(win_T *wp)
-{
-    orig_topline = wp->w_topline;
-# ifdef FEAT_DIFF
-    orig_topfill = wp->w_topfill;
-# endif
-}
-
-/*
- * Returns TRUE if the top line and top fill of window 'wp' matches the saved
- * topline and topfill.
- */
-    int
-is_mouse_topline(win_T *wp)
-{
-    return orig_topline == wp->w_topline
-#ifdef FEAT_DIFF
-	&& orig_topfill == wp->w_topfill
-#endif
-	;
-}
-#endif
-
-/*
- * If "buf" is NULL put "string[new_slen]" in typebuf; "buflen" is not used.
- * If "buf" is not NULL put "string[new_slen]" in "buf[bufsize]" and adjust
- * "buflen".
- * Remove "slen" bytes.
- * Returns FAIL for error.
- */
-    int
-put_string_in_typebuf(
-	int	offset,
-	int	slen,
-	char_u	*string,
-	int	new_slen,
-	char_u	*buf,
-	int	bufsize,
-	int	*buflen)
-{
-    int		extra = new_slen - slen;
-
-    string[new_slen] = NUL;
-    if (buf == NULL)
-    {
-	if (extra < 0)
-	    // remove matched chars, taking care of noremap
-	    del_typebuf(-extra, offset);
-	else if (extra > 0)
-	    // insert the extra space we need
-	    if (ins_typebuf(string + slen, REMAP_YES, offset, FALSE, FALSE)
-								       == FAIL)
-		return FAIL;
-
-	// Careful: del_typebuf() and ins_typebuf() may have reallocated
-	// typebuf.tb_buf[]!
-	mch_memmove(typebuf.tb_buf + typebuf.tb_off + offset, string,
-							     (size_t)new_slen);
-    }
-    else
-    {
-	if (extra < 0)
-	    // remove matched characters
-	    mch_memmove(buf + offset, buf + offset - extra,
-					   (size_t)(*buflen + offset + extra));
-	else if (extra > 0)
-	{
-	    // Insert the extra space we need.  If there is insufficient
-	    // space return -1.
-	    if (*buflen + extra + new_slen >= bufsize)
-		return FAIL;
-	    mch_memmove(buf + offset + extra, buf + offset,
-						   (size_t)(*buflen - offset));
-	}
-	mch_memmove(buf + offset, string, (size_t)new_slen);
-	*buflen = *buflen + extra + new_slen;
-    }
-    return OK;
-}
-
-/*
- * Decode a modifier number as xterm provides it into MOD_MASK bits.
- */
-    int
-decode_modifiers(int n)
-{
-    int	    code = n - 1;
-    int	    modifiers = 0;
-
-    if (code & 1)
-	modifiers |= MOD_MASK_SHIFT;
-    if (code & 2)
-	modifiers |= MOD_MASK_ALT;
-    if (code & 4)
-	modifiers |= MOD_MASK_CTRL;
-    if (code & 8)
-	modifiers |= MOD_MASK_META;
-    // Any further modifiers are silently dropped.
-
-    return modifiers;
-}
-
-    static int
-modifiers2keycode(int modifiers, int *key, char_u *string)
-{
-    int new_slen = 0;
-
-    if (modifiers == 0)
-	return 0;
-
-    // Some keys have the modifier included.  Need to handle that here to
-    // make mappings work.  This may result in a special key, such as
-    // K_S_TAB.
-    *key = simplify_key(*key, &modifiers);
-    if (modifiers != 0)
-    {
-	string[new_slen++] = K_SPECIAL;
-	string[new_slen++] = (int)KS_MODIFIER;
-	string[new_slen++] = modifiers;
-    }
-    return new_slen;
-}
-
-/*
- * Handle a cursor position report.
- */
-    static void
-handle_u7_response(int *arg, char_u *tp UNUSED, int csi_len UNUSED)
-{
-    if (arg[0] == 2 && arg[1] >= 2)
-    {
-	char *aw = NULL;
-
-	LOG_TR(("Received U7 status: %s", tp));
-	u7_status.tr_progress = STATUS_GOT;
-	did_cursorhold = TRUE;
-	if (arg[1] == 2)
-	    aw = "single";
-	else if (arg[1] == 3)
-	    aw = "double";
-	if (aw != NULL && STRCMP(aw, p_ambw) != 0)
-	{
-	    // Setting the option causes a screen redraw. Do
-	    // that right away if possible, keeping any
-	    // messages.
-	    set_option_value_give_err((char_u *)"ambw", 0L, (char_u *)aw, 0);
-#ifdef DEBUG_TERMRESPONSE
-	    {
-		int r = redraw_asap(UPD_CLEAR);
-
-		log_tr("set 'ambiwidth', redraw_asap(): %d", r);
-	    }
-#else
-	    redraw_asap(UPD_CLEAR);
-#endif
-#ifdef FEAT_EVAL
-	    set_vim_var_string(VV_TERMU7RESP, tp, csi_len);
-#endif
-	}
-    }
-    else if (arg[0] == 3)
-    {
-	int value;
-
-	LOG_TR(("Received compatibility test result: %s", tp));
-	xcc_status.tr_progress = STATUS_GOT;
-
-	// Third row: xterm compatibility test.
-	// If the cursor is on the first column then the terminal can handle
-	// the request for cursor style and blinking.
-	value = arg[1] == 1 ? TPR_YES : TPR_NO;
-	term_props[TPR_CURSOR_STYLE].tpr_status = value;
-	term_props[TPR_CURSOR_BLINK].tpr_status = value;
-    }
-}
-
-/*
- * Handle a response to T_CRV: {lead}{first}{x};{vers};{y}c
- * Xterm and alike use '>' for {first}.
- * Rxvt sends "{lead}?1;2c".
- */
-    static void
-handle_version_response(int first, int *arg, int argc, char_u *tp)
-{
-    // The xterm version.  It is set to zero when it can't be an actual xterm
-    // version.
-    int version = arg[1];
-
-    LOG_TR(("Received CRV response: %s", tp));
-    crv_status.tr_progress = STATUS_GOT;
-    did_cursorhold = TRUE;
-
-    // Reset terminal properties that are set based on the termresponse.
-    // Mainly useful for tests that send the termresponse multiple times.
-    // For testing all props can be reset.
-    init_term_props(
-#ifdef FEAT_EVAL
-	    reset_term_props_on_termresponse
-#else
-	    FALSE
-#endif
-	    );
-
-    // If this code starts with CSI, you can bet that the
-    // terminal uses 8-bit codes.
-    if (tp[0] == CSI)
-	switch_to_8bit();
-
-    // Screen sends 40500.
-    // rxvt sends its version number: "20703" is 2.7.3.
-    // Ignore it for when the user has set 'term' to xterm,
-    // even though it's an rxvt.
-    if (version > 20000)
-	version = 0;
-
-    // Figure out more if the response is CSI > 99 ; 99 ; 99 c
-    if (first == '>' && argc == 3)
-    {
-	// mintty 2.9.5 sends 77;20905;0c.
-	// (77 is ASCII 'M' for mintty.)
-	if (arg[0] == 77)
-	{
-	    // mintty can do SGR mouse reporting
-	    term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
-	}
-
-#ifdef FEAT_TERMRESPONSE
-	// If xterm version >= 141 try to get termcap codes.  For other
-	// terminals the request should be ignored.
-	if (version >= 141 && p_xtermcodes)
-	{
-	    LOG_TR(("Enable checking for XT codes"));
-	    check_for_codes = TRUE;
-	    need_gather = TRUE;
-	    req_codes_from_term();
-	}
-#endif
-
-	// libvterm sends 0;100;0
-	// Konsole sends 0;115;0 and works the same way
-	if ((version == 100 || version == 115) && arg[0] == 0 && arg[2] == 0)
-	{
-	    // If run from Vim $COLORS is set to the number of
-	    // colors the terminal supports.  Otherwise assume
-	    // 256, libvterm supports even more.
-	    if (mch_getenv((char_u *)"COLORS") == NULL)
-		may_adjust_color_count(256);
-	    // Libvterm can handle SGR mouse reporting.
-	    term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
-	}
-
-	if (version == 95)
-	{
-	    // Mac Terminal.app sends 1;95;0
-	    if (arg[0] == 1 && arg[2] == 0)
-	    {
-		term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
-		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
-	    }
-	    // iTerm2 sends 0;95;0
-	    else if (arg[0] == 0 && arg[2] == 0)
-	    {
-		// iTerm2 can do SGR mouse reporting
-		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
-	    }
-	    // old iTerm2 sends 0;95;
-	    else if (arg[0] == 0 && arg[2] == -1)
-		term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
-	}
-
-	// screen sends 83;40500;0 83 is 'S' in ASCII.
-	if (arg[0] == 83)
-	{
-	    // screen supports SGR mouse codes since 4.7.0
-	    if (arg[1] >= 40700)
-		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
-	    else
-		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_XTERM;
-	}
-
-	// If no recognized terminal has set mouse behavior, assume xterm.
-	if (term_props[TPR_MOUSE].tpr_status == TPR_UNKNOWN)
-	{
-	    // Xterm version 277 supports SGR.
-	    // Xterm version >= 95 supports mouse dragging.
-	    if (version >= 277)
-		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
-	    else if (version >= 95)
-		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_XTERM2;
-	}
-
-	// Detect terminals that set $TERM to something like
-	// "xterm-256color" but are not fully xterm compatible.
-	//
-	// Gnome terminal sends 1;3801;0, 1;4402;0 or 1;2501;0.
-	// Newer Gnome-terminal sends 65;6001;1.
-	// xfce4-terminal sends 1;2802;0.
-	// screen sends 83;40500;0
-	// Assuming any version number over 2500 is not an
-	// xterm (without the limit for rxvt and screen).
-	if (arg[1] >= 2500)
-	    term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
-
-	else if (version == 136 && arg[2] == 0)
-	{
-	    term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
-
-	    // PuTTY sends 0;136;0
-	    if (arg[0] == 0)
-	    {
-		// supports sgr-like mouse reporting.
-		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
-	    }
-	    // vandyke SecureCRT sends 1;136;0
-	}
-
-	// Konsole sends 0;115;0 - but t_u8 does not actually work, therefore
-	// commented out.
-	// else if (version == 115 && arg[0] == 0 && arg[2] == 0)
-	//     term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
-
-	// Kitty up to 9.x sends 1;400{version};{secondary-version}
-	if (arg[0] == 1 && arg[1] >= 4000 && arg[1] <= 4009)
-	{
-	    term_props[TPR_KITTY].tpr_status = TPR_YES;
-	    term_props[TPR_KITTY].tpr_set_by_termresponse = TRUE;
-
-	    // Kitty can handle SGR mouse reporting.
-	    term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
-	}
-
-	// GNU screen sends 83;30600;0, 83;40500;0, etc.
-	// 30600/40500 is a version number of GNU screen. DA2 support is added
-	// on 3.6.  DCS string has a special meaning to GNU screen, but xterm
-	// compatibility checking does not detect GNU screen.
-	if (arg[0] == 83 && arg[1] >= 30600)
-	{
-	    term_props[TPR_CURSOR_STYLE].tpr_status = TPR_NO;
-	    term_props[TPR_CURSOR_BLINK].tpr_status = TPR_NO;
-	}
-
-	// Xterm first responded to this request at patch level
-	// 95, so assume anything below 95 is not xterm and hopefully supports
-	// the underline RGB color sequence.
-	if (version < 95)
-	    term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
-
-	// Getting the cursor style is only supported properly by xterm since
-	// version 279 (otherwise it returns 0x18).
-	if (version < 279)
-	    term_props[TPR_CURSOR_STYLE].tpr_status = TPR_NO;
-
-	/*
-	 * Take action on the detected properties.
-	 */
-
-	// Unless the underline RGB color is expected to work, disable "t_8u".
-	// It does not work for the real Xterm, it resets the background color.
-	// This may cause some flicker.  Alternative would be to set "t_8u"
-	// here if the terminal is expected to support it, but that might
-	// conflict with what was set in the .vimrc.
-	if (term_props[TPR_UNDERLINE_RGB].tpr_status != TPR_YES
-			&& *T_8U != NUL
-			&& !option_was_set((char_u *)"t_8u"))
-	{
-	    set_string_option_direct((char_u *)"t_8u", -1, (char_u *)"",
-								  OPT_FREE, 0);
-	}
-#ifdef FEAT_TERMRESPONSE
-	if (*T_8U != NUL && write_t_8u_state == MAYBE)
-	    // Did skip writing t_8u, a complete redraw is needed.
-	    redraw_later_clear();
-	write_t_8u_state = OK;  // can output t_8u now
-#endif
-
-	// Only set 'ttymouse' automatically if it was not set
-	// by the user already.
-	if (!option_was_set((char_u *)"ttym")
-		&& (term_props[TPR_MOUSE].tpr_status == TPR_MOUSE_XTERM2
-		    || term_props[TPR_MOUSE].tpr_status == TPR_MOUSE_SGR))
-	{
-	    set_option_value_give_err((char_u *)"ttym", 0L,
-		    term_props[TPR_MOUSE].tpr_status == TPR_MOUSE_SGR
-				    ? (char_u *)"sgr" : (char_u *)"xterm2", 0);
-	}
-
-#ifdef FEAT_TERMRESPONSE
-	int need_flush = FALSE;
-
-	// Only request the cursor style if t_SH and t_RS are
-	// set. Only supported properly by xterm since version
-	// 279 (otherwise it returns 0x18).
-	// Only when getting the cursor style was detected to work.
-	// Not for Terminal.app, it can't handle t_RS, it
-	// echoes the characters to the screen.
-	if (rcs_status.tr_progress == STATUS_GET
-		&& term_props[TPR_CURSOR_STYLE].tpr_status == TPR_YES
-		&& *T_CSH != NUL
-		&& *T_CRS != NUL)
-	{
-	    MAY_WANT_TO_LOG_THIS;
-	    LOG_TR(("Sending cursor style request"));
-	    out_str(T_CRS);
-	    termrequest_sent(&rcs_status);
-	    need_flush = TRUE;
-	}
-
-	// Only request the cursor blink mode if t_RC set. Not
-	// for Gnome terminal, it can't handle t_RC, it
-	// echoes the characters to the screen.
-	// Only when getting the cursor style was detected to work.
-	if (rbm_status.tr_progress == STATUS_GET
-		&& term_props[TPR_CURSOR_BLINK].tpr_status == TPR_YES
-		&& *T_CRC != NUL)
-	{
-	    MAY_WANT_TO_LOG_THIS;
-	    LOG_TR(("Sending cursor blink mode request"));
-	    out_str(T_CRC);
-	    termrequest_sent(&rbm_status);
-	    need_flush = TRUE;
-	}
-
-	if (need_flush)
-	    out_flush();
-#endif
-    }
-}
-
-/*
- * Add "key" to "buf" and return the number of bytes used.
- * Handles special keys and multi-byte characters.
- */
-    static int
-add_key_to_buf(int key, char_u *buf)
-{
-    int idx = 0;
-
-    if (IS_SPECIAL(key))
-    {
-	buf[idx++] = K_SPECIAL;
-	buf[idx++] = KEY2TERMCAP0(key);
-	buf[idx++] = KEY2TERMCAP1(key);
-    }
-    else if (has_mbyte)
-	idx += (*mb_char2bytes)(key, buf + idx);
-    else
-	buf[idx++] = key;
-    return idx;
-}
-
-/*
- * Shared between handle_key_with_modifier() and handle_csi_function_key().
- */
-    static int
-put_key_modifiers_in_typebuf(
-	int	key_arg,
-	int	modifiers_arg,
-	int	csi_len,
-	int	offset,
-	char_u	*buf,
-	int	bufsize,
-	int	*buflen)
-{
-    int key = key_arg;
-    int modifiers = modifiers_arg;
-
-    // Some keys need adjustment when the Ctrl modifier is used.
-    key = may_adjust_key_for_ctrl(modifiers, key);
-
-    // May remove the shift modifier if it's already included in the key.
-    modifiers = may_remove_shift_modifier(modifiers, key);
-
-    // Produce modifiers with K_SPECIAL KS_MODIFIER {mod}
-    char_u string[MAX_KEY_CODE_LEN + 1];
-    int new_slen = modifiers2keycode(modifiers, &key, string);
-
-    // Add the bytes for the key.
-    new_slen += add_key_to_buf(key, string + new_slen);
-
-    string[new_slen] = NUL;
-    if (put_string_in_typebuf(offset, csi_len, string, new_slen,
-						 buf, bufsize, buflen) == FAIL)
-	return -1;
-    return new_slen - csi_len + offset;
-}
-
-/*
- * Handle a sequence with key and modifier, one of:
- *	{lead}27;{modifier};{key}~
- *	{lead}{key};{modifier}u
- * Returns the difference in length.
- */
-    static int
-handle_key_with_modifier(
-	int	*arg,
-	int	trail,
-	int	csi_len,
-	int	offset,
-	char_u	*buf,
-	int	bufsize,
-	int	*buflen)
-{
-    // Only set seenModifyOtherKeys for the "{lead}27;" code to avoid setting
-    // it for terminals using the kitty keyboard protocol.  Xterm sends
-    // the form ending in "u" when the formatOtherKeys resource is set.  We do
-    // not support this.
-    //
-    // Do not set seenModifyOtherKeys if there was a positive response at any
-    // time from requesting the kitty keyboard protocol state, these are not
-    // expected to support modifyOtherKeys level 2.
-    //
-    // Do not set seenModifyOtherKeys for kitty, it does send some sequences
-    // like this but does not have the modifyOtherKeys feature.
-    if (trail != 'u'
-	    && (kitty_protocol_state == KKPS_INITIAL
-		|| kitty_protocol_state == KKPS_OFF
-		|| kitty_protocol_state == KKPS_AFTER_T_TE)
-	    && term_props[TPR_KITTY].tpr_status != TPR_YES)
-    {
-#ifdef FEAT_EVAL
-	ch_log(NULL, "setting seenModifyOtherKeys to TRUE");
-#endif
-	seenModifyOtherKeys = TRUE;
-    }
-
-    int key = trail == 'u' ? arg[0] : arg[2];
-    int modifiers = decode_modifiers(arg[1]);
-
-    // Some terminals do not apply the Shift modifier to the key.  To make
-    // mappings consistent we do it here.  TODO: support more keys.
-    if ((modifiers & MOD_MASK_SHIFT) && key >= 'a' && key <= 'z')
-	key += 'A' - 'a';
-
-    // Putting Esc in the buffer creates ambiguity, it can be the start of an
-    // escape sequence.  Use K_ESC to avoid that.
-    if (key == ESC)
-	key = K_ESC;
-
-    return put_key_modifiers_in_typebuf(key, modifiers,
-					csi_len, offset, buf, bufsize, buflen);
-}
-
-/*
- * Handle a sequence with key without a modifier:
- *	{lead}{key}u
- * Returns the difference in length.
- */
-    static int
-handle_key_without_modifier(
-	int	*arg,
-	int	csi_len,
-	int	offset,
-	char_u	*buf,
-	int	bufsize,
-	int	*buflen)
-{
-    char_u  string[MAX_KEY_CODE_LEN + 1];
-    int	    new_slen;
-
-    if (arg[0] == ESC)
-    {
-	// Putting Esc in the buffer creates ambiguity, it can be the start of
-	// an escape sequence.  Use K_ESC to avoid that.
-	string[0] = K_SPECIAL;
-	string[1] = KS_EXTRA;
-	string[2] = KE_ESC;
-	new_slen = 3;
-    }
-    else
-	new_slen = add_key_to_buf(arg[0], string);
-
-    if (put_string_in_typebuf(offset, csi_len, string, new_slen,
-						 buf, bufsize, buflen) == FAIL)
-	return -1;
-    return new_slen - csi_len + offset;
-}
-
-/*
- * CSI function key without or with modifiers:
- *	{lead}[ABCDEFHPQRS]
- *	{lead}1;{modifier}[ABCDEFHPQRS]
- * Returns zero when nog recognized, a positive number when recognized.
- */
-    static int
-handle_csi_function_key(
-	int	argc,
-	int	*arg,
-	int	trail,
-	int	csi_len,
-	char_u	*key_name,
-	int	offset,
-	char_u  *buf,
-	int	bufsize,
-	int	*buflen)
-{
-    key_name[0] = 'k';
-    switch (trail)
-    {
-	case 'A': key_name[1] = 'u'; break;  // K_UP
-	case 'B': key_name[1] = 'd'; break;  // K_DOWN
-	case 'C': key_name[1] = 'r'; break;  // K_RIGHT
-	case 'D': key_name[1] = 'l'; break;  // K_LEFT
-
-	// case 'E': keypad BEGIN - not supported
-	case 'F': key_name[0] = '@'; key_name[1] = '7'; break;  // K_END
-	case 'H': key_name[1] = 'h'; break;  // K_HOME
-
-	case 'P': key_name[1] = '1'; break;  // K_F1
-	case 'Q': key_name[1] = '2'; break;  // K_F2
-	case 'R': key_name[1] = '3'; break;  // K_F3
-	case 'S': key_name[1] = '4'; break;  // K_F4
-
-	default: return 0;  // not recognized
-    }
-
-    int key = TERMCAP2KEY(key_name[0], key_name[1]);
-    int modifiers = argc == 2 ? decode_modifiers(arg[1]) : 0;
-    put_key_modifiers_in_typebuf(key, modifiers,
-					csi_len, offset, buf, bufsize, buflen);
-    return csi_len;
-}
-
-/*
- * Handle a CSI escape sequence.
- * - Xterm version string.
- *
- * - Response to XTQMODKEYS: "{lead} > 4 ; Pv m".
- *
- * - Cursor position report: {lead}{row};{col}R
- *   The final byte must be 'R'. It is used for checking the
- *   ambiguous-width character state.
- *
- * - window position reply: {lead}3;{x};{y}t
- *
- * - key with modifiers when modifyOtherKeys is enabled or the Kitty keyboard
- *   protocol is used:
- *	    {lead}27;{modifier};{key}~
- *	    {lead}{key};{modifier}u
- *
- * - function key with or without modifiers:
- *	{lead}[ABCDEFHPQRS]
- *	{lead}1;{modifier}[ABCDEFHPQRS]
- *
- * Return 0 for no match, -1 for partial match, > 0 for full match.
- */
-    static int
-handle_csi(
-	char_u	*tp,
-	int	len,
-	char_u	*argp,
-	int	offset,
-	char_u  *buf,
-	int	bufsize,
-	int	*buflen,
-	char_u	*key_name,
-	int	*slen)
-{
-    int		first = -1;  // optional char right after {lead}
-    int		trail;	     // char that ends CSI sequence
-    int		arg[3] = {-1, -1, -1};	// argument numbers
-    int		argc = 0;		// number of arguments
-    char_u	*ap = argp;
-    int		csi_len;
-
-    // Check for non-digit after CSI.
-    if (!VIM_ISDIGIT(*ap))
-	first = *ap++;
-
-    if (first >= 'A' && first <= 'Z')
-    {
-	// If "first" is in [ABCDEFHPQRS] then it is actually the "trail" and
-	// no argument follows.
-	trail = first;
-	first = -1;
-	--ap;
-    }
-    else
-    {
-	// Find up to three argument numbers.
-	for (argc = 0; argc < 3; )
-	{
-	    if (ap >= tp + len)
-		return -1;
-	    if (*ap == ';')
-		arg[argc++] = -1;  // omitted number
-	    else if (VIM_ISDIGIT(*ap))
-	    {
-		arg[argc] = 0;
-		for (;;)
-		{
-		    if (ap >= tp + len)
-			return -1;
-		    if (!VIM_ISDIGIT(*ap))
-			break;
-		    arg[argc] = arg[argc] * 10 + (*ap - '0');
-		    ++ap;
-		}
-		++argc;
-	    }
-	    if (*ap == ';')
-		++ap;
-	    else
-		break;
-	}
-
-	// mrxvt has been reported to have "+" in the version. Assume
-	// the escape sequence ends with a letter or one of "{|}~".
-	while (ap < tp + len
-		&& !(*ap >= '{' && *ap <= '~')
-		&& !ASCII_ISALPHA(*ap))
-	    ++ap;
-	if (ap >= tp + len)
-	    return -1;
-	trail = *ap;
-    }
-
-    csi_len = (int)(ap - tp) + 1;
-
-    // Response to XTQMODKEYS: "CSI > 4 ; Pv m" where Pv indicates the
-    // modifyOtherKeys level.  Drop similar responses.
-    if (first == '>' && (argc == 1 || argc == 2) && trail == 'm')
-    {
-	if (arg[0] == 4 && argc == 2)
-	    modify_otherkeys_state = arg[1] == 2 ? MOKS_ENABLED : MOKS_OFF;
-
-	key_name[0] = (int)KS_EXTRA;
-	key_name[1] = (int)KE_IGNORE;
-	*slen = csi_len;
-    }
-
-    // Function key starting with CSI:
-    //	{lead}[ABCDEFHPQRS]
-    //	{lead}1;{modifier}[ABCDEFHPQRS]
-    else if (first == -1 && ASCII_ISUPPER(trail)
-	    && (argc == 0 || (argc == 2 && arg[0] == 1)))
-    {
-	int res = handle_csi_function_key(argc, arg, trail,
-			      csi_len, key_name, offset, buf, bufsize, buflen);
-	return res <= 0 ? res : len + res;
-    }
-
-    // Cursor position report: {lead}{row};{col}R
-    // Eat it when there are 2 arguments and it ends in 'R'.
-    // Also when u7_status is not "sent", it may be from a previous Vim that
-    // just exited.  But not for <S-F3>, it sends something similar, check for
-    // row and column to make sense.
-    else if (first == -1 && argc == 2 && trail == 'R')
-    {
-	handle_u7_response(arg, tp, csi_len);
-
-	key_name[0] = (int)KS_EXTRA;
-	key_name[1] = (int)KE_IGNORE;
-	*slen = csi_len;
-    }
-
-    // Version string: Eat it when there is at least one digit and
-    // it ends in 'c'
-    else if (*T_CRV != NUL && ap > argp + 1 && trail == 'c')
-    {
-	handle_version_response(first, arg, argc, tp);
-
-	*slen = csi_len;
-#ifdef FEAT_EVAL
-	set_vim_var_string(VV_TERMRESPONSE, tp, *slen);
-#endif
-	apply_autocmds(EVENT_TERMRESPONSE,
-					NULL, NULL, FALSE, curbuf);
-	key_name[0] = (int)KS_EXTRA;
-	key_name[1] = (int)KE_IGNORE;
-    }
-
-#ifdef FEAT_TERMRESPONSE
-    // Check blinking cursor from xterm:
-    // {lead}?12;1$y       set
-    // {lead}?12;2$y       not set
-    //
-    // {lead} can be <Esc>[ or CSI
-    else if (rbm_status.tr_progress == STATUS_SENT
-	    && first == '?'
-	    && ap == argp + 6
-	    && arg[0] == 12
-	    && ap[-1] == '$'
-	    && trail == 'y')
-    {
-	initial_cursor_blink = (arg[1] == '1');
-	rbm_status.tr_progress = STATUS_GOT;
-	LOG_TR(("Received cursor blinking mode response: %s", tp));
-	key_name[0] = (int)KS_EXTRA;
-	key_name[1] = (int)KE_IGNORE;
-	*slen = csi_len;
-# ifdef FEAT_EVAL
-	set_vim_var_string(VV_TERMBLINKRESP, tp, *slen);
-# endif
-    }
-#endif
-
-    // Kitty keyboard protocol status response: CSI ? flags u
-    else if (first == '?' && argc == 1 && trail == 'u')
-    {
-	// The protocol has various "progressive enhancement flags" values, but
-	// we only check for zero and non-zero here.
-	if (arg[0] == '0')
-	{
-	    kitty_protocol_state = KKPS_OFF;
-	}
-	else
-	{
-	    kitty_protocol_state = KKPS_ENABLED;
-
-	    // Reset seenModifyOtherKeys just in case some key combination has
-	    // been seen that set it before we get the status response.
-#ifdef FEAT_EVAL
-	    ch_log(NULL, "setting seenModifyOtherKeys to FALSE");
-#endif
-	    seenModifyOtherKeys = FALSE;
-	}
-
-	key_name[0] = (int)KS_EXTRA;
-	key_name[1] = (int)KE_IGNORE;
-	*slen = csi_len;
-    }
-
-#ifdef FEAT_TERMRESPONSE
-    // Check for a window position response from the terminal:
-    //       {lead}3;{x};{y}t
-    else if (did_request_winpos && argc == 3 && arg[0] == 3
-						   && trail == 't')
-    {
-	winpos_x = arg[1];
-	winpos_y = arg[2];
-	// got finished code: consume it
-	key_name[0] = (int)KS_EXTRA;
-	key_name[1] = (int)KE_IGNORE;
-	*slen = csi_len;
-
-	if (--did_request_winpos <= 0)
-	    winpos_status.tr_progress = STATUS_GOT;
-    }
-#endif
-
-    // Key with modifier:
-    //	{lead}27;{modifier};{key}~
-    //	{lead}{key};{modifier}u
-    // Even though we only handle four modifiers and the {modifier} value
-    // should be 16 or lower, we accept all modifier values to avoid the raw
-    // sequence to be passed through.
-    else if ((arg[0] == 27 && argc == 3 && trail == '~')
-		|| (argc == 2 && trail == 'u'))
-    {
-	return len + handle_key_with_modifier(arg, trail,
-					csi_len, offset, buf, bufsize, buflen);
-    }
-
-    // Key without modifier (Kitty sends this for Esc):
-    //	{lead}{key}u
-    else if (argc == 1 && trail == 'u')
-    {
-	return len + handle_key_without_modifier(arg,
-			    csi_len, offset, buf, bufsize, buflen);
-    }
-
-    // else: Unknown CSI sequence.  We could drop it, but then the
-    // user can't create a map for it.
-    return 0;
-}
-
-/*
- * Handle an OSC sequence, fore/background color response from the terminal:
- *
- *       {lead}{code};rgb:{rrrr}/{gggg}/{bbbb}{tail}
- * or    {lead}{code};rgb:{rr}/{gg}/{bb}{tail}
- *
- * {code} is 10 for foreground, 11 for background
- * {lead} can be <Esc>] or OSC
- * {tail} can be '\007', <Esc>\ or STERM.
- *
- * Consume any code that starts with "{lead}11;", it's also
- * possible that "rgba" is following.
- */
-    static int
-handle_osc(char_u *tp, char_u *argp, int len, char_u *key_name, int *slen)
-{
-    int		i, j;
-
-    j = 1 + (tp[0] == ESC);
-    if (len >= j + 3 && (argp[0] != '1'
-			     || (argp[1] != '1' && argp[1] != '0')
-			     || argp[2] != ';'))
-	i = 0; // no match
-    else
-	for (i = j; i < len; ++i)
-	    if (tp[i] == '\007' || (tp[0] == OSC ? tp[i] == STERM
-			: (tp[i] == ESC && i + 1 < len && tp[i + 1] == '\\')))
-	    {
-		int is_bg = argp[1] == '1';
-		int is_4digit = i - j >= 21 && tp[j + 11] == '/'
-						  && tp[j + 16] == '/';
-
-		if (i - j >= 15 && STRNCMP(tp + j + 3, "rgb:", 4) == 0
-			    && (is_4digit
-				   || (tp[j + 9] == '/' && tp[j + 12] == '/')))
-		{
-		    char_u *tp_r = tp + j + 7;
-		    char_u *tp_g = tp + j + (is_4digit ? 12 : 10);
-		    char_u *tp_b = tp + j + (is_4digit ? 17 : 13);
-#if defined(FEAT_TERMRESPONSE) && defined(FEAT_TERMINAL)
-		    int rval, gval, bval;
-
-		    rval = hexhex2nr(tp_r);
-		    gval = hexhex2nr(tp_b);
-		    bval = hexhex2nr(tp_g);
-#endif
-		    if (is_bg)
-		    {
-			char *new_bg_val = (3 * '6' < *tp_r + *tp_g +
-					     *tp_b) ? "light" : "dark";
-
-			LOG_TR(("Received RBG response: %s", tp));
-#ifdef FEAT_TERMRESPONSE
-			rbg_status.tr_progress = STATUS_GOT;
-# ifdef FEAT_TERMINAL
-			bg_r = rval;
-			bg_g = gval;
-			bg_b = bval;
-# endif
-#endif
-			if (!option_was_set((char_u *)"bg")
-				      && STRCMP(p_bg, new_bg_val) != 0)
-			{
-			    // value differs, apply it
-			    set_option_value_give_err((char_u *)"bg",
-						  0L, (char_u *)new_bg_val, 0);
-			    reset_option_was_set((char_u *)"bg");
-			    redraw_asap(UPD_CLEAR);
-			}
-		    }
-#if defined(FEAT_TERMRESPONSE) && defined(FEAT_TERMINAL)
-		    else
-		    {
-			LOG_TR(("Received RFG response: %s", tp));
-			rfg_status.tr_progress = STATUS_GOT;
-			fg_r = rval;
-			fg_g = gval;
-			fg_b = bval;
-		    }
-#endif
-		}
-
-		// got finished code: consume it
-		key_name[0] = (int)KS_EXTRA;
-		key_name[1] = (int)KE_IGNORE;
-		*slen = i + 1 + (tp[i] == ESC);
-#ifdef FEAT_EVAL
-		set_vim_var_string(is_bg ? VV_TERMRBGRESP
-						  : VV_TERMRFGRESP, tp, *slen);
-#endif
-		break;
-	    }
-    if (i == len)
-    {
-	LOG_TR(("not enough characters for RB"));
-	return FAIL;
-    }
-    return OK;
-}
-
-/*
- * Check for key code response from xterm:
- * {lead}{flag}+r<hex bytes><{tail}
- *
- * {lead} can be <Esc>P or DCS
- * {flag} can be '0' or '1'
- * {tail} can be Esc>\ or STERM
- *
- * Check for resource response from xterm (and drop it):
- * {lead}{flag}+R<hex bytes>=<value>{tail}
- *
- * Check for cursor shape response from xterm:
- * {lead}1$r<digit> q{tail}
- *
- * {lead} can be <Esc>P or DCS
- * {tail} can be <Esc>\ or STERM
- *
- * Consume any code that starts with "{lead}.+r" or "{lead}.$r".
- */
-    static int
-handle_dcs(char_u *tp, char_u *argp, int len, char_u *key_name, int *slen)
-{
-    int i, j;
-
-    j = 1 + (tp[0] == ESC);
-    if (len < j + 3)
-	i = len; // need more chars
-    else if ((argp[1] != '+' && argp[1] != '$')
-	    || (argp[2] != 'r' && argp[2] != 'R'))
-	i = 0; // no match
-    else if (argp[1] == '+')
-	// key code response
-	for (i = j; i < len; ++i)
-	{
-	    if ((tp[i] == ESC && i + 1 < len && tp[i + 1] == '\\')
-		    || tp[i] == STERM)
-	    {
-#ifdef FEAT_TERMRESPONSE
-		// handle a key code response, drop a resource response
-		if (i - j >= 3 && argp[2] == 'r')
-		    got_code_from_term(tp + j, i);
-#endif
-		key_name[0] = (int)KS_EXTRA;
-		key_name[1] = (int)KE_IGNORE;
-		*slen = i + 1 + (tp[i] == ESC);
-		break;
-	    }
-	}
-    else
-    {
-	// Probably the cursor shape response.  Make sure that "i"
-	// is equal to "len" when there are not sufficient
-	// characters.
-	for (i = j + 3; i < len; ++i)
-	{
-	    if (i - j == 3 && !isdigit(tp[i]))
-		break;
-	    if (i - j == 4 && tp[i] != ' ')
-		break;
-	    if (i - j == 5 && tp[i] != 'q')
-		break;
-	    if (i - j == 6 && tp[i] != ESC && tp[i] != STERM)
-		break;
-	    if ((i - j == 6 && tp[i] == STERM)
-		    || (i - j == 7 && tp[i] == '\\'))
-	    {
-#ifdef FEAT_TERMRESPONSE
-		int number = argp[3] - '0';
-
-		// 0, 1 = block blink, 2 = block
-		// 3 = underline blink, 4 = underline
-		// 5 = vertical bar blink, 6 = vertical bar
-		number = number == 0 ? 1 : number;
-		initial_cursor_shape = (number + 1) / 2;
-		// The blink flag is actually inverted, compared to
-		// the value set with T_SH.
-		initial_cursor_shape_blink =
-				       (number & 1) ? FALSE : TRUE;
-		rcs_status.tr_progress = STATUS_GOT;
-#endif
-		LOG_TR(("Received cursor shape response: %s", tp));
-
-		key_name[0] = (int)KS_EXTRA;
-		key_name[1] = (int)KE_IGNORE;
-		*slen = i + 1;
-#ifdef FEAT_EVAL
-		set_vim_var_string(VV_TERMSTYLERESP, tp, *slen);
-#endif
-		break;
-	    }
-	}
-    }
-
-    if (i == len)
-    {
-	// These codes arrive many together, each code can be
-	// truncated at any point.
-	LOG_TR(("not enough characters for XT"));
-	return FAIL;
-    }
-    return OK;
-}
-
-/*
- * Check if typebuf.tb_buf[] contains a terminal key code.
- * Check from typebuf.tb_buf[typebuf.tb_off] to typebuf.tb_buf[typebuf.tb_off
- * + "max_offset"].
- * Return 0 for no match, -1 for partial match, > 0 for full match.
- * Return KEYLEN_REMOVED when a key code was deleted.
- * With a match, the match is removed, the replacement code is inserted in
- * typebuf.tb_buf[] and the number of characters in typebuf.tb_buf[] is
- * returned.
- * When "buf" is not NULL, buf[bufsize] is used instead of typebuf.tb_buf[].
- * "buflen" is then the length of the string in buf[] and is updated for
- * inserts and deletes.
- */
-    int
-check_termcode(
-    int		max_offset,
-    char_u	*buf,
-    int		bufsize,
-    int		*buflen)
-{
-    char_u	*tp;
-    char_u	*p;
-    int		slen = 0;	// init for GCC
-    int		modslen;
-    int		len;
-    int		retval = 0;
-    int		offset;
-    char_u	key_name[2];
-    int		modifiers;
-    char_u	*modifiers_start = NULL;
-    int		key;
-    int		new_slen;   // Length of what will replace the termcode
-    char_u	string[MAX_KEY_CODE_LEN + 1];
-    int		i, j;
-    int		idx = 0;
-    int		cpo_koffset;
-
-    cpo_koffset = (vim_strchr(p_cpo, CPO_KOFFSET) != NULL);
-
-    /*
-     * Speed up the checks for terminal codes by gathering all first bytes
-     * used in termleader[].  Often this is just a single <Esc>.
-     */
-    if (need_gather)
-	gather_termleader();
-
-    /*
-     * Check at several positions in typebuf.tb_buf[], to catch something like
-     * "x<Up>" that can be mapped. Stop at max_offset, because characters
-     * after that cannot be used for mapping, and with @r commands
-     * typebuf.tb_buf[] can become very long.
-     * This is used often, KEEP IT FAST!
-     */
-    for (offset = 0; offset < max_offset; ++offset)
-    {
-	if (buf == NULL)
-	{
-	    if (offset >= typebuf.tb_len)
-		break;
-	    tp = typebuf.tb_buf + typebuf.tb_off + offset;
-	    len = typebuf.tb_len - offset;	// length of the input
-	}
-	else
-	{
-	    if (offset >= *buflen)
-		break;
-	    tp = buf + offset;
-	    len = *buflen - offset;
-	}
-
-	/*
-	 * Don't check characters after K_SPECIAL, those are already
-	 * translated terminal chars (avoid translating ~@^Hx).
-	 */
-	if (*tp == K_SPECIAL)
-	{
-	    offset += 2;	// there are always 2 extra characters
-	    continue;
-	}
-
-	/*
-	 * Skip this position if the character does not appear as the first
-	 * character in term_strings. This speeds up a lot, since most
-	 * termcodes start with the same character (ESC or CSI).
-	 */
-	i = *tp;
-	for (p = termleader; *p && *p != i; ++p)
-	    ;
-	if (*p == NUL)
-	    continue;
-
-	/*
-	 * Skip this position if p_ek is not set and tp[0] is an ESC and we
-	 * are in Insert mode.
-	 */
-	if (*tp == ESC && !p_ek && (State & MODE_INSERT))
-	    continue;
-
-	tp[len] = NUL;
-	key_name[0] = NUL;	// no key name found yet
-	key_name[1] = NUL;	// no key name found yet
-	modifiers = 0;		// no modifiers yet
-
-#ifdef FEAT_GUI
-	if (gui.in_use)
-	{
-	    /*
-	     * GUI special key codes are all of the form [CSI xx].
-	     */
-	    if (*tp == CSI)	    // Special key from GUI
-	    {
-		if (len < 3)
-		    return -1;	    // Shouldn't happen
-		slen = 3;
-		key_name[0] = tp[1];
-		key_name[1] = tp[2];
-	    }
-	}
-	else
-#endif // FEAT_GUI
-#ifdef MSWIN
-	    if (len >= 3 && tp[0] == CSI && tp[1] == KS_EXTRA
-		    && (tp[2] == KE_MOUSEUP
-			|| tp[2] == KE_MOUSEDOWN
-			|| tp[2] == KE_MOUSELEFT
-			|| tp[2] == KE_MOUSERIGHT))
-	{
-	    // MS-Windows console sends mouse scroll events encoded:
-	    // - CSI
-	    // - KS_EXTRA
-	    // - {KE_MOUSE[UP|DOWN|LEFT|RIGHT]}
-	    slen = 3;
-	    key_name[0] = tp[1];
-	    key_name[1] = tp[2];
-	}
-	else
-#endif
-	{
-	    int  mouse_index_found = -1;
-
-	    for (idx = 0; idx < tc_len; ++idx)
-	    {
-		/*
-		 * Ignore the entry if we are not at the start of
-		 * typebuf.tb_buf[]
-		 * and there are not enough characters to make a match.
-		 * But only when the 'K' flag is in 'cpoptions'.
-		 */
-		slen = termcodes[idx].len;
-		modifiers_start = NULL;
-		if (cpo_koffset && offset && len < slen)
-		    continue;
-		if (STRNCMP(termcodes[idx].code, tp,
-				     (size_t)(slen > len ? len : slen)) == 0)
-		{
-		    int	    looks_like_mouse_start = FALSE;
-
-		    if (len < slen)		// got a partial sequence
-			return -1;		// need to get more chars
-
-		    /*
-		     * When found a keypad key, check if there is another key
-		     * that matches and use that one.  This makes <Home> to be
-		     * found instead of <kHome> when they produce the same
-		     * key code.
-		     */
-		    if (termcodes[idx].name[0] == 'K'
-				       && VIM_ISDIGIT(termcodes[idx].name[1]))
-		    {
-			for (j = idx + 1; j < tc_len; ++j)
-			    if (termcodes[j].len == slen &&
-				    STRNCMP(termcodes[idx].code,
-					    termcodes[j].code, slen) == 0)
-			    {
-				idx = j;
-				break;
-			    }
-		    }
-
-		    if (slen == 2 && len > 2
-			    && termcodes[idx].code[0] == ESC
-			    && termcodes[idx].code[1] == '[')
-		    {
-			// The mouse termcode "ESC [" is also the prefix of
-			// "ESC [ I" (focus gained) and other keys.  Check some
-			// more bytes to find out.
-			if (!isdigit(tp[2]))
-			{
-			    // ESC [ without number following: Only use it when
-			    // there is no other match.
-			    looks_like_mouse_start = TRUE;
-			}
-			else if (termcodes[idx].name[0] == KS_DEC_MOUSE)
-			{
-			    char_u  *nr = tp + 2;
-			    int	    count = 0;
-
-			    // If a digit is following it could be a key with
-			    // modifier, e.g., ESC [ 1;2P.  Can be confused
-			    // with DEC_MOUSE, which requires four numbers
-			    // following.  If not then it can't be a DEC_MOUSE
-			    // code.
-			    for (;;)
-			    {
-				++count;
-				(void)getdigits(&nr);
-				if (nr >= tp + len)
-				    return -1;	// partial sequence
-				if (*nr != ';')
-				    break;
-				++nr;
-				if (nr >= tp + len)
-				    return -1;	// partial sequence
-			    }
-			    if (count < 4)
-				continue;	// no match
-			}
-		    }
-		    if (looks_like_mouse_start)
-		    {
-			// Only use it when there is no other match.
-			if (mouse_index_found < 0)
-			    mouse_index_found = idx;
-		    }
-		    else
-		    {
-			key_name[0] = termcodes[idx].name[0];
-			key_name[1] = termcodes[idx].name[1];
-			break;
-		    }
-		}
-
-		/*
-		 * Check for code with modifier, like xterm uses:
-		 * <Esc>[123;*X  (modslen == slen - 3)
-		 * <Esc>[@;*X    (matches <Esc>[X and <Esc>[1;9X )
-		 * Also <Esc>O*X and <M-O>*X (modslen == slen - 2).
-		 * When there is a modifier the * matches a number.
-		 * When there is no modifier the ;* or * is omitted.
-		 */
-		if (termcodes[idx].modlen > 0 && mouse_index_found < 0)
-		{
-		    modslen = termcodes[idx].modlen;
-		    if (cpo_koffset && offset && len < modslen)
-			continue;
-		    if (STRNCMP(termcodes[idx].code, tp,
-				(size_t)(modslen > len ? len : modslen)) == 0)
-		    {
-			int	    n;
-
-			if (len <= modslen)	// got a partial sequence
-			    return -1;		// need to get more chars
-
-			if (tp[modslen] == termcodes[idx].code[slen - 1])
-			    // no modifiers
-			    slen = modslen + 1;
-			else if (tp[modslen] != ';' && modslen == slen - 3)
-			    // no match for "code;*X" with "code;"
-			    continue;
-			else if (termcodes[idx].code[modslen] == '@'
-					 && (tp[modslen] != '1'
-						    || tp[modslen + 1] != ';'))
-			    // no match for "<Esc>[@" with "<Esc>[1;"
-			    continue;
-			else
-			{
-			    // Skip over the digits, the final char must
-			    // follow. URXVT can use a negative value, thus
-			    // also accept '-'.
-			    for (j = slen - 2; j < len && (isdigit(tp[j])
-				       || tp[j] == '-' || tp[j] == ';'); ++j)
-				;
-			    ++j;
-			    if (len < j)	// got a partial sequence
-				return -1;	// need to get more chars
-			    if (tp[j - 1] != termcodes[idx].code[slen - 1])
-				continue;	// no match
-
-			    modifiers_start = tp + slen - 2;
-
-			    // Match!  Convert modifier bits.
-			    n = atoi((char *)modifiers_start);
-			    modifiers |= decode_modifiers(n);
-
-			    slen = j;
-			}
-			key_name[0] = termcodes[idx].name[0];
-			key_name[1] = termcodes[idx].name[1];
-			break;
-		    }
-		}
-	    }
-	    if (idx == tc_len && mouse_index_found >= 0)
-	    {
-		key_name[0] = termcodes[mouse_index_found].name[0];
-		key_name[1] = termcodes[mouse_index_found].name[1];
-	    }
-	}
-
-	if (key_name[0] == NUL
-	    // Mouse codes of DEC and pterm start with <ESC>[.  When
-	    // detecting the start of these mouse codes they might as well be
-	    // another key code or terminal response.
-#ifdef FEAT_MOUSE_DEC
-	    || key_name[0] == KS_DEC_MOUSE
-#endif
-#ifdef FEAT_MOUSE_PTERM
-	    || key_name[0] == KS_PTERM_MOUSE
-#endif
-	   )
-	{
-	    char_u *argp = tp[0] == ESC ? tp + 2 : tp + 1;
-
-	    /*
-	     * Check for responses from the terminal starting with {lead}:
-	     * "<Esc>[" or CSI followed by [0-9>?].
-	     * Also for function keys without a modifier:
-	     * "<Esc>[" or CSI followed by [ABCDEFHPQRS].
-	     *
-	     * - Xterm version string: {lead}>{x};{vers};{y}c
-	     *   Also eat other possible responses to t_RV, rxvt returns
-	     *   "{lead}?1;2c".
-	     *
-	     * - Response to XTQMODKEYS: "{lead} > 4 ; Pv m".
-	     *
-	     * - Cursor position report: {lead}{row};{col}R
-	     *   The final byte must be 'R'. It is used for checking the
-	     *   ambiguous-width character state.
-	     *
-	     * - window position reply: {lead}3;{x};{y}t
-	     *
-	     * - key with modifiers when modifyOtherKeys is enabled:
-	     *	    {lead}27;{modifier};{key}~
-	     *	    {lead}{key};{modifier}u
-	     */
-	    if (((tp[0] == ESC && len >= 3 && tp[1] == '[')
-			|| (tp[0] == CSI && len >= 2))
-		    && vim_strchr((char_u *)"0123456789>?ABCDEFHPQRS",
-								*argp) != NULL)
-	    {
-		int resp = handle_csi(tp, len, argp, offset, buf,
-					     bufsize, buflen, key_name, &slen);
-		if (resp != 0)
-		{
-#ifdef DEBUG_TERMRESPONSE
-		    if (resp == -1)
-			LOG_TR(("Not enough characters for CSI sequence"));
-#endif
-		    return resp;
-		}
-	    }
-
-	    // Check for fore/background color response from the terminal,
-	    // starting} with <Esc>] or OSC
-	    else if ((*T_RBG != NUL || *T_RFG != NUL)
-			&& ((tp[0] == ESC && len >= 2 && tp[1] == ']')
-			    || tp[0] == OSC))
-	    {
-		if (handle_osc(tp, argp, len, key_name, &slen) == FAIL)
-		    return -1;
-	    }
-
-	    // Check for key code response from xterm,
-	    // starting with <Esc>P or DCS
-	    // It would only be needed with this condition:
-	    //	    (check_for_codes || rcs_status.tr_progress == STATUS_SENT)
-	    // Now this is always done so that DCS codes don't mess up things.
-	    else if ((tp[0] == ESC && len >= 2 && tp[1] == 'P') || tp[0] == DCS)
-	    {
-		if (handle_dcs(tp, argp, len, key_name, &slen) == FAIL)
-		    return -1;
-	    }
-	}
-
-	if (key_name[0] == NUL)
-	    continue;	    // No match at this position, try next one
-
-	// We only get here when we have a complete termcode match
-
-#if defined(FEAT_GUI) || defined(MSWIN)
-	/*
-	 * For scroll events from the GUI or MS-Windows console, fetch the
-	 * pointer coordinates so that we know which window to scroll later.
-	 */
-	if (TRUE
-# if defined(FEAT_GUI) && !defined(MSWIN)
-		&& gui.in_use
-# endif
-		&& key_name[0] == (int)KS_EXTRA
-		&& (key_name[1] == (int)KE_X1MOUSE
-		    || key_name[1] == (int)KE_X2MOUSE
-		    || key_name[1] == (int)KE_MOUSEMOVE_XY
-		    || key_name[1] == (int)KE_MOUSELEFT
-		    || key_name[1] == (int)KE_MOUSERIGHT
-		    || key_name[1] == (int)KE_MOUSEDOWN
-		    || key_name[1] == (int)KE_MOUSEUP))
-	{
-	    char_u	bytes[6];
-	    int		num_bytes = get_bytes_from_buf(tp + slen, bytes, 4);
-
-	    if (num_bytes == -1)	// not enough coordinates
-		return -1;
-	    mouse_col = 128 * (bytes[0] - ' ' - 1) + bytes[1] - ' ' - 1;
-	    mouse_row = 128 * (bytes[2] - ' ' - 1) + bytes[3] - ' ' - 1;
-	    slen += num_bytes;
-	    // equal to K_MOUSEMOVE
-	    if (key_name[1] == (int)KE_MOUSEMOVE_XY)
-		key_name[1] = (int)KE_MOUSEMOVE;
-	}
-	else
-#endif
-	/*
-	 * If it is a mouse click, get the coordinates.
-	 */
-	if (key_name[0] == KS_MOUSE
-#ifdef FEAT_MOUSE_GPM
-		|| key_name[0] == KS_GPM_MOUSE
-#endif
-#ifdef FEAT_MOUSE_JSB
-		|| key_name[0] == KS_JSBTERM_MOUSE
-#endif
-#ifdef FEAT_MOUSE_NET
-		|| key_name[0] == KS_NETTERM_MOUSE
-#endif
-#ifdef FEAT_MOUSE_DEC
-		|| key_name[0] == KS_DEC_MOUSE
-#endif
-#ifdef FEAT_MOUSE_PTERM
-		|| key_name[0] == KS_PTERM_MOUSE
-#endif
-#ifdef FEAT_MOUSE_URXVT
-		|| key_name[0] == KS_URXVT_MOUSE
-#endif
-		|| key_name[0] == KS_SGR_MOUSE
-		|| key_name[0] == KS_SGR_MOUSE_RELEASE)
-	{
-	    if (check_termcode_mouse(tp, &slen, key_name, modifiers_start, idx,
-							     &modifiers) == -1)
-		return -1;
-	}
-
-#ifdef FEAT_GUI
-	/*
-	 * If using the GUI, then we get menu and scrollbar events.
-	 *
-	 * A menu event is encoded as K_SPECIAL, KS_MENU, KE_FILLER followed by
-	 * four bytes which are to be taken as a pointer to the vimmenu_T
-	 * structure.
-	 *
-	 * A tab line event is encoded as K_SPECIAL KS_TABLINE nr, where "nr"
-	 * is one byte with the tab index.
-	 *
-	 * A scrollbar event is K_SPECIAL, KS_VER_SCROLLBAR, KE_FILLER followed
-	 * by one byte representing the scrollbar number, and then four bytes
-	 * representing a long_u which is the new value of the scrollbar.
-	 *
-	 * A horizontal scrollbar event is K_SPECIAL, KS_HOR_SCROLLBAR,
-	 * KE_FILLER followed by four bytes representing a long_u which is the
-	 * new value of the scrollbar.
-	 */
-# ifdef FEAT_MENU
-	else if (key_name[0] == (int)KS_MENU)
-	{
-	    long_u	val;
-	    int		num_bytes = get_long_from_buf(tp + slen, &val);
-
-	    if (num_bytes == -1)
-		return -1;
-	    current_menu = (vimmenu_T *)val;
-	    slen += num_bytes;
-
-	    // The menu may have been deleted right after it was used, check
-	    // for that.
-	    if (check_menu_pointer(root_menu, current_menu) == FAIL)
-	    {
-		key_name[0] = KS_EXTRA;
-		key_name[1] = (int)KE_IGNORE;
-	    }
-	}
-# endif
-# ifdef FEAT_GUI_TABLINE
-	else if (key_name[0] == (int)KS_TABLINE)
-	{
-	    // Selecting tabline tab or using its menu.
-	    char_u	bytes[6];
-	    int		num_bytes = get_bytes_from_buf(tp + slen, bytes, 1);
-
-	    if (num_bytes == -1)
-		return -1;
-	    current_tab = (int)bytes[0];
-	    if (current_tab == 255)	// -1 in a byte gives 255
-		current_tab = -1;
-	    slen += num_bytes;
-	}
-	else if (key_name[0] == (int)KS_TABMENU)
-	{
-	    // Selecting tabline tab or using its menu.
-	    char_u	bytes[6];
-	    int		num_bytes = get_bytes_from_buf(tp + slen, bytes, 2);
-
-	    if (num_bytes == -1)
-		return -1;
-	    current_tab = (int)bytes[0];
-	    current_tabmenu = (int)bytes[1];
-	    slen += num_bytes;
-	}
-# endif
-# ifndef USE_ON_FLY_SCROLL
-	else if (key_name[0] == (int)KS_VER_SCROLLBAR)
-	{
-	    long_u	val;
-	    char_u	bytes[6];
-	    int		num_bytes;
-
-	    // Get the last scrollbar event in the queue of the same type
-	    j = 0;
-	    for (i = 0; tp[j] == CSI && tp[j + 1] == KS_VER_SCROLLBAR
-						     && tp[j + 2] != NUL; ++i)
-	    {
-		j += 3;
-		num_bytes = get_bytes_from_buf(tp + j, bytes, 1);
-		if (num_bytes == -1)
-		    break;
-		if (i == 0)
-		    current_scrollbar = (int)bytes[0];
-		else if (current_scrollbar != (int)bytes[0])
-		    break;
-		j += num_bytes;
-		num_bytes = get_long_from_buf(tp + j, &val);
-		if (num_bytes == -1)
-		    break;
-		scrollbar_value = val;
-		j += num_bytes;
-		slen = j;
-	    }
-	    if (i == 0)		// not enough characters to make one
-		return -1;
-	}
-	else if (key_name[0] == (int)KS_HOR_SCROLLBAR)
-	{
-	    long_u	val;
-	    int		num_bytes;
-
-	    // Get the last horiz. scrollbar event in the queue
-	    j = 0;
-	    for (i = 0; tp[j] == CSI && tp[j + 1] == KS_HOR_SCROLLBAR
-						     && tp[j + 2] != NUL; ++i)
-	    {
-		j += 3;
-		num_bytes = get_long_from_buf(tp + j, &val);
-		if (num_bytes == -1)
-		    break;
-		scrollbar_value = val;
-		j += num_bytes;
-		slen = j;
-	    }
-	    if (i == 0)		// not enough characters to make one
-		return -1;
-	}
-# endif // !USE_ON_FLY_SCROLL
-#endif // FEAT_GUI
-
-#if defined(UNIX) || defined(VMS)
-	/*
-	 * Handle FocusIn/FocusOut event sequences reported by XTerm.
-	 * (CSI I/CSI O)
-	 */
-	if (key_name[0] == KS_EXTRA
-# ifdef FEAT_GUI
-		&& !gui.in_use
-# endif
-	    )
-	{
-	    if (key_name[1] == KE_FOCUSGAINED)
-	    {
-		if (!focus_state)
-		{
-		    ui_focus_change(TRUE);
-		    did_cursorhold = TRUE;
-		    focus_state = TRUE;
-		}
-		key_name[1] = (int)KE_IGNORE;
-	    }
-	    else if (key_name[1] == KE_FOCUSLOST)
-	    {
-		if (focus_state)
-		{
-		    ui_focus_change(FALSE);
-		    did_cursorhold = TRUE;
-		    focus_state = FALSE;
-		}
-		key_name[1] = (int)KE_IGNORE;
-	    }
-	}
-#endif
-
-	/*
-	 * Change <xHome> to <Home>, <xUp> to <Up>, etc.
-	 */
-	key = handle_x_keys(TERMCAP2KEY(key_name[0], key_name[1]));
-
-	/*
-	 * Add any modifier codes to our string.
-	 */
-	new_slen = modifiers2keycode(modifiers, &key, string);
-
-	// Finally, add the special key code to our string
-	key_name[0] = KEY2TERMCAP0(key);
-	key_name[1] = KEY2TERMCAP1(key);
-	if (key_name[0] == KS_KEY)
-	{
-	    // from ":set <M-b>=xx"
-	    if (has_mbyte)
-		new_slen += (*mb_char2bytes)(key_name[1], string + new_slen);
-	    else
-		string[new_slen++] = key_name[1];
-	}
-	else if (new_slen == 0 && key_name[0] == KS_EXTRA
-						  && key_name[1] == KE_IGNORE)
-	{
-	    // Do not put K_IGNORE into the buffer, do return KEYLEN_REMOVED
-	    // to indicate what happened.
-	    retval = KEYLEN_REMOVED;
-	}
-	else
-	{
-	    string[new_slen++] = K_SPECIAL;
-	    string[new_slen++] = key_name[0];
-	    string[new_slen++] = key_name[1];
-	}
-	if (put_string_in_typebuf(offset, slen, string, new_slen,
-						 buf, bufsize, buflen) == FAIL)
-	    return -1;
-	return retval == 0 ? (len + new_slen - slen + offset) : retval;
-    }
-
-#ifdef FEAT_TERMRESPONSE
-    LOG_TR(("normal character"));
-#endif
-
-    return 0;			    // no match found
-}
-
-#if (defined(FEAT_TERMINAL) && defined(FEAT_TERMRESPONSE)) || defined(PROTO)
-/*
- * Get the text foreground color, if known.
- */
-    void
-term_get_fg_color(char_u *r, char_u *g, char_u *b)
-{
-    if (rfg_status.tr_progress != STATUS_GOT)
-	return;
-
-    *r = fg_r;
-    *g = fg_g;
-    *b = fg_b;
-}
-
-/*
- * Get the text background color, if known.
- */
-    void
-term_get_bg_color(char_u *r, char_u *g, char_u *b)
-{
-    if (rbg_status.tr_progress != STATUS_GOT)
-	return;
-
-    *r = bg_r;
-    *g = bg_g;
-    *b = bg_b;
-}
-#endif
-
-/*
- * Replace any terminal code strings in from[] with the equivalent internal
- * vim representation.	This is used for the "from" and "to" part of a
- * mapping, and the "to" part of a menu command.
- * Any strings like "<C-UP>" are also replaced, unless 'cpoptions' contains
- * '<'.
- * K_SPECIAL by itself is replaced by K_SPECIAL KS_SPECIAL KE_FILLER.
- *
- * The replacement is done in result[] and finally copied into allocated
- * memory. If this all works well *bufp is set to the allocated memory and a
- * pointer to it is returned. If something fails *bufp is set to NULL and from
- * is returned.
- *
- * CTRL-V characters are removed.  When "flags" has REPTERM_FROM_PART, a
- * trailing CTRL-V is included, otherwise it is removed (for ":map xx ^V", maps
- * xx to nothing).  When 'cpoptions' does not contain 'B', a backslash can be
- * used instead of a CTRL-V.
- *
- * Flags:
- *  REPTERM_FROM_PART	see above
- *  REPTERM_DO_LT	also translate <lt>
- *  REPTERM_SPECIAL	always accept <key> notation
- *  REPTERM_NO_SIMPLIFY	do not simplify <C-H> to 0x08 and set 8th bit for <A-x>
- *
- * "did_simplify" is set when some <C-H> or <A-x> code was simplified, unless
- * it is NULL.
- */
-    char_u *
-replace_termcodes(
-    char_u	*from,
-    char_u	**bufp,
-    int		flags,
-    int		*did_simplify)
-{
-    int		i;
-    int		slen;
-    int		key;
-    size_t	dlen = 0;
-    char_u	*src;
-    int		do_backslash;	// backslash is a special character
-    int		do_special;	// recognize <> key codes
-    int		do_key_code;	// recognize raw key codes
-    char_u	*result;	// buffer for resulting string
-    garray_T	ga;
-
-    do_backslash = (vim_strchr(p_cpo, CPO_BSLASH) == NULL);
-    do_special = (vim_strchr(p_cpo, CPO_SPECI) == NULL)
-						  || (flags & REPTERM_SPECIAL);
-    do_key_code = (vim_strchr(p_cpo, CPO_KEYCODE) == NULL);
-    src = from;
-
-    /*
-     * Allocate space for the translation.  Worst case a single character is
-     * replaced by 6 bytes (shifted special key), plus a NUL at the end.
-     * In the rare case more might be needed ga_grow() must be called again.
-     */
-    ga_init2(&ga, 1L, 100);
-    if (ga_grow(&ga, (int)(STRLEN(src) * 6 + 1)) == FAIL) // out of memory
-    {
-	*bufp = NULL;
-	return from;
-    }
-    result = ga.ga_data;
-
-    /*
-     * Check for #n at start only: function key n
-     */
-    if ((flags & REPTERM_FROM_PART) && src[0] == '#' && VIM_ISDIGIT(src[1]))
-    {
-	result[dlen++] = K_SPECIAL;
-	result[dlen++] = 'k';
-	if (src[1] == '0')
-	    result[dlen++] = ';';	// #0 is F10 is "k;"
-	else
-	    result[dlen++] = src[1];	// #3 is F3 is "k3"
-	src += 2;
-    }
-
-    /*
-     * Copy each byte from *from to result[dlen]
-     */
-    while (*src != NUL)
-    {
-	/*
-	 * If 'cpoptions' does not contain '<', check for special key codes,
-	 * like "<C-S-LeftMouse>"
-	 */
-	if (do_special && ((flags & REPTERM_DO_LT)
-					      || STRNCMP(src, "<lt>", 4) != 0))
-	{
-#ifdef FEAT_EVAL
-	    /*
-	     * Change <SID>Func to K_SNR <script-nr> _Func.  This name is used
-	     * for script-locla user functions.
-	     * (room: 5 * 6 = 30 bytes; needed: 3 + <nr> + 1 <= 14)
-	     * Also change <SID>name.Func to K_SNR <import-script-nr> _Func.
-	     * Only if "name" is recognized as an import.
-	     */
-	    if (STRNICMP(src, "<SID>", 5) == 0)
-	    {
-		if (current_sctx.sc_sid <= 0)
-		    emsg(_(e_using_sid_not_in_script_context));
-		else
-		{
-		    char_u  *dot;
-		    long    sid = current_sctx.sc_sid;
-
-		    src += 5;
-		    if (in_vim9script()
-				       && (dot = vim_strchr(src, '.')) != NULL)
-		    {
-			imported_T *imp = find_imported(src, dot - src, FALSE);
-
-			if (imp != NULL)
-			{
-			    scriptitem_T    *si = SCRIPT_ITEM(imp->imp_sid);
-			    size_t	    len;
-
-			    src = dot + 1;
-			    if (si->sn_autoload_prefix != NULL)
-			    {
-				// Turn "<SID>name.Func"
-				// into "scriptname#Func".
-				len = STRLEN(si->sn_autoload_prefix);
-				if (ga_grow(&ga,
-				     (int)(STRLEN(src) * 6 + len + 1)) == FAIL)
-				{
-				    ga_clear(&ga);
-				    *bufp = NULL;
-				    return from;
-				}
-				result = ga.ga_data;
-				STRCPY(result + dlen, si->sn_autoload_prefix);
-				dlen += len;
-				continue;
-			    }
-			    sid = imp->imp_sid;
-			}
-		    }
-
-		    result[dlen++] = K_SPECIAL;
-		    result[dlen++] = (int)KS_EXTRA;
-		    result[dlen++] = (int)KE_SNR;
-		    sprintf((char *)result + dlen, "%ld", sid);
-		    dlen += STRLEN(result + dlen);
-		    result[dlen++] = '_';
-		    continue;
-		}
-	    }
-#endif
-	    int fsk_flags = FSK_KEYCODE
-			| ((flags & REPTERM_NO_SIMPLIFY) ? 0 : FSK_SIMPLIFY)
-			| ((flags & REPTERM_FROM_PART) ? FSK_FROM_PART : 0);
-	    slen = trans_special(&src, result + dlen, fsk_flags,
-							   TRUE, did_simplify);
-	    if (slen > 0)
-	    {
-		dlen += slen;
-		continue;
-	    }
-	}
-
-	/*
-	 * If 'cpoptions' does not contain 'k', see if it's an actual key-code.
-	 * Note that this is also checked after replacing the <> form.
-	 * Single character codes are NOT replaced (e.g. ^H or DEL), because
-	 * it could be a character in the file.
-	 */
-	if (do_key_code)
-	{
-	    i = find_term_bykeys(src);
-	    if (i >= 0)
-	    {
-		result[dlen++] = K_SPECIAL;
-		result[dlen++] = termcodes[i].name[0];
-		result[dlen++] = termcodes[i].name[1];
-		src += termcodes[i].len;
-		// If terminal code matched, continue after it.
-		continue;
-	    }
-	}
-
-#ifdef FEAT_EVAL
-	if (do_special)
-	{
-	    char_u	*p, *s, len;
-
-	    /*
-	     * Replace <Leader> by the value of "mapleader".
-	     * Replace <LocalLeader> by the value of "maplocalleader".
-	     * If "mapleader" or "maplocalleader" isn't set use a backslash.
-	     */
-	    if (STRNICMP(src, "<Leader>", 8) == 0)
-	    {
-		len = 8;
-		p = get_var_value((char_u *)"g:mapleader");
-	    }
-	    else if (STRNICMP(src, "<LocalLeader>", 13) == 0)
-	    {
-		len = 13;
-		p = get_var_value((char_u *)"g:maplocalleader");
-	    }
-	    else
-	    {
-		len = 0;
-		p = NULL;
-	    }
-	    if (len != 0)
-	    {
-		// Allow up to 8 * 6 characters for "mapleader".
-		if (p == NULL || *p == NUL || STRLEN(p) > 8 * 6)
-		    s = (char_u *)"\\";
-		else
-		    s = p;
-		while (*s != NUL)
-		    result[dlen++] = *s++;
-		src += len;
-		continue;
-	    }
-	}
-#endif
-
-	/*
-	 * Remove CTRL-V and ignore the next character.
-	 * For "from" side the CTRL-V at the end is included, for the "to"
-	 * part it is removed.
-	 * If 'cpoptions' does not contain 'B', also accept a backslash.
-	 */
-	key = *src;
-	if (key == Ctrl_V || (do_backslash && key == '\\'))
-	{
-	    ++src;				// skip CTRL-V or backslash
-	    if (*src == NUL)
-	    {
-		if (flags & REPTERM_FROM_PART)
-		    result[dlen++] = key;
-		break;
-	    }
-	}
-
-	// skip multibyte char correctly
-	for (i = (*mb_ptr2len)(src); i > 0; --i)
-	{
-	    /*
-	     * If the character is K_SPECIAL, replace it with K_SPECIAL
-	     * KS_SPECIAL KE_FILLER.
-	     * If compiled with the GUI replace CSI with K_CSI.
-	     */
-	    if (*src == K_SPECIAL)
-	    {
-		result[dlen++] = K_SPECIAL;
-		result[dlen++] = KS_SPECIAL;
-		result[dlen++] = KE_FILLER;
-	    }
-# ifdef FEAT_GUI
-	    else if (*src == CSI)
-	    {
-		result[dlen++] = K_SPECIAL;
-		result[dlen++] = KS_EXTRA;
-		result[dlen++] = (int)KE_CSI;
-	    }
-# endif
-	    else
-		result[dlen++] = *src;
-	    ++src;
-	}
-    }
-    result[dlen] = NUL;
-
-    /*
-     * Copy the new string to allocated memory.
-     * If this fails, just return from.
-     */
-    if ((*bufp = vim_strsave(result)) != NULL)
-	from = *bufp;
-    vim_free(result);
-    return from;
-}
-
-/*
- * Find a termcode with keys 'src' (must be NUL terminated).
- * Return the index in termcodes[], or -1 if not found.
- */
-    static int
-find_term_bykeys(char_u *src)
-{
-    int		i;
-    int		slen = (int)STRLEN(src);
-
-    for (i = 0; i < tc_len; ++i)
-    {
-	if (slen == termcodes[i].len
-			&& STRNCMP(termcodes[i].code, src, (size_t)slen) == 0)
-	    return i;
-    }
-    return -1;
-}
-
-/*
- * Gather the first characters in the terminal key codes into a string.
- * Used to speed up check_termcode().
- */
-    static void
-gather_termleader(void)
-{
-    int	    i;
-    int	    len = 0;
-
-#ifdef FEAT_GUI
-    if (gui.in_use)
-	termleader[len++] = CSI;    // the GUI codes are not in termcodes[]
-#endif
-#ifdef FEAT_TERMRESPONSE
-    if (check_for_codes || *T_CRS != NUL)
-	termleader[len++] = DCS;    // the termcode response starts with DCS
-				    // in 8-bit mode
-#endif
-    termleader[len] = NUL;
-
-    for (i = 0; i < tc_len; ++i)
-	if (vim_strchr(termleader, termcodes[i].code[0]) == NULL)
-	{
-	    termleader[len++] = termcodes[i].code[0];
-	    termleader[len] = NUL;
-	}
-
-    need_gather = FALSE;
-}
-
-/*
- * Show all termcodes (for ":set termcap")
- * This code looks a lot like showoptions(), but is different.
- * "flags" can have OPT_ONECOLUMN.
- */
-    void
-show_termcodes(int flags)
-{
-    int		col;
-    int		*items;
-    int		item_count;
-    int		run;
-    int		row, rows;
-    int		cols;
-    int		i;
-    int		len;
-
-#define INC3 27	    // try to make three columns
-#define INC2 40	    // try to make two columns
-#define GAP 2	    // spaces between columns
-
-    if (tc_len == 0)	    // no terminal codes (must be GUI)
-	return;
-    items = ALLOC_MULT(int, tc_len);
-    if (items == NULL)
-	return;
-
-    // Highlight title
-    msg_puts_title(_("\n--- Terminal keys ---"));
-
-    /*
-     * Do the loop three times:
-     * 1. display the short items (non-strings and short strings)
-     * 2. display the medium items (medium length strings)
-     * 3. display the long items (remaining strings)
-     * When "flags" has OPT_ONECOLUMN do everything in 3.
-     */
-    for (run = (flags & OPT_ONECOLUMN) ? 3 : 1; run <= 3 && !got_int; ++run)
-    {
-	/*
-	 * collect the items in items[]
-	 */
-	item_count = 0;
-	for (i = 0; i < tc_len; i++)
-	{
-	    len = show_one_termcode(termcodes[i].name,
-						    termcodes[i].code, FALSE);
-	    if ((flags & OPT_ONECOLUMN) ||
-		    (len <= INC3 - GAP ? run == 1
-			: len <= INC2 - GAP ? run == 2
-			: run == 3))
-		items[item_count++] = i;
-	}
-
-	/*
-	 * display the items
-	 */
-	if (run <= 2)
-	{
-	    cols = (Columns + GAP) / (run == 1 ? INC3 : INC2);
-	    if (cols == 0)
-		cols = 1;
-	    rows = (item_count + cols - 1) / cols;
-	}
-	else	// run == 3
-	    rows = item_count;
-	for (row = 0; row < rows && !got_int; ++row)
-	{
-	    msg_putchar('\n');			// go to next line
-	    if (got_int)			// 'q' typed in more
-		break;
-	    col = 0;
-	    for (i = row; i < item_count; i += rows)
-	    {
-		msg_col = col;			// make columns
-		show_one_termcode(termcodes[items[i]].name,
-					      termcodes[items[i]].code, TRUE);
-		if (run == 2)
-		    col += INC2;
-		else
-		    col += INC3;
-	    }
-	    out_flush();
-	    ui_breakcheck();
-	}
-    }
-    vim_free(items);
-}
-
-/*
- * Show one termcode entry.
- * Output goes into IObuff[]
- */
-    int
-show_one_termcode(char_u *name, char_u *code, int printit)
-{
-    char_u	*p;
-    int		len;
-
-    if (name[0] > '~')
-    {
-	IObuff[0] = ' ';
-	IObuff[1] = ' ';
-	IObuff[2] = ' ';
-	IObuff[3] = ' ';
-    }
-    else
-    {
-	IObuff[0] = 't';
-	IObuff[1] = '_';
-	IObuff[2] = name[0];
-	IObuff[3] = name[1];
-    }
-    IObuff[4] = ' ';
-
-    p = get_special_key_name(TERMCAP2KEY(name[0], name[1]), 0);
-    if (p[1] != 't')
-	STRCPY(IObuff + 5, p);
-    else
-	IObuff[5] = NUL;
-    len = (int)STRLEN(IObuff);
-    do
-	IObuff[len++] = ' ';
-    while (len < 17);
-    IObuff[len] = NUL;
-    if (code == NULL)
-	len += 4;
-    else
-	len += vim_strsize(code);
-
-    if (printit)
-    {
-	msg_puts((char *)IObuff);
-	if (code == NULL)
-	    msg_puts("NULL");
-	else
-	    msg_outtrans(code);
-    }
-    return len;
-}
-
-#if defined(FEAT_TERMRESPONSE) || defined(PROTO)
-/*
- * For Xterm >= 140 compiled with OPT_TCAP_QUERY: Obtain the actually used
- * termcap codes from the terminal itself.
- * We get them one by one to avoid a very long response string.
- */
-static int xt_index_in = 0;
-static int xt_index_out = 0;
-
-    static void
-req_codes_from_term(void)
-{
-    xt_index_out = 0;
-    xt_index_in = 0;
-    req_more_codes_from_term();
-}
-
-    static void
-req_more_codes_from_term(void)
-{
-    char	buf[23];  // extra size to shut up LGTM
-    int		old_idx = xt_index_out;
-
-    // Don't do anything when going to exit.
-    if (exiting)
-	return;
-
-    // Send up to 10 more requests out than we received.  Avoid sending too
-    // many, there can be a buffer overflow somewhere.
-    while (xt_index_out < xt_index_in + 10 && key_names[xt_index_out] != NULL)
-    {
-	char *key_name = key_names[xt_index_out];
-
-	MAY_WANT_TO_LOG_THIS;
-	LOG_TR(("Requesting XT %d: %s", xt_index_out, key_name));
-	sprintf(buf, "\033P+q%02x%02x\033\\", key_name[0], key_name[1]);
-	out_str_nf((char_u *)buf);
-	++xt_index_out;
-    }
-
-    // Send the codes out right away.
-    if (xt_index_out != old_idx)
-	out_flush();
-}
-
-/*
- * Decode key code response from xterm: '<Esc>P1+r<name>=<string><Esc>\'.
- * A "0" instead of the "1" indicates a code that isn't supported.
- * Both <name> and <string> are encoded in hex.
- * "code" points to the "0" or "1".
- */
-    static void
-got_code_from_term(char_u *code, int len)
-{
-#define XT_LEN 100
-    char_u	name[3];
-    char_u	str[XT_LEN];
-    int		i;
-    int		j = 0;
-    int		c;
-
-    // A '1' means the code is supported, a '0' means it isn't.
-    // When half the length is > XT_LEN we can't use it.
-    // Our names are currently all 2 characters.
-    if (code[0] == '1' && code[7] == '=' && len / 2 < XT_LEN)
-    {
-	// Get the name from the response and find it in the table.
-	name[0] = hexhex2nr(code + 3);
-	name[1] = hexhex2nr(code + 5);
-	name[2] = NUL;
-	for (i = 0; key_names[i] != NULL; ++i)
-	{
-	    if (STRCMP(key_names[i], name) == 0)
-	    {
-		xt_index_in = i;
-		break;
-	    }
-	}
-
-	LOG_TR(("Received XT %d: %s", xt_index_in, (char *)name));
-
-	if (key_names[i] != NULL)
-	{
-	    for (i = 8; (c = hexhex2nr(code + i)) >= 0; i += 2)
-		str[j++] = c;
-	    str[j] = NUL;
-	    if (name[0] == 'C' && name[1] == 'o')
-	    {
-		// Color count is not a key code.
-		int val = atoi((char *)str);
-#if defined(FEAT_EVAL)
-		if (val == t_colors)
-		    ch_log(NULL, "got_code_from_term(Co): no change (%d)", val);
-		else
-		    ch_log(NULL,
-			       "got_code_from_term(Co): changed from %d to %d",
-								t_colors, val);
-#endif
-		may_adjust_color_count(val);
-	    }
-	    else
-	    {
-		i = find_term_bykeys(str);
-		if (i >= 0 && name[0] == termcodes[i].name[0]
-					    && name[1] == termcodes[i].name[1])
-		{
-		    // Existing entry with the same name and code - skip.
-#ifdef FEAT_EVAL
-		    ch_log(NULL, "got_code_from_term(): Entry %c%c did not change",
-							     name[0], name[1]);
-#endif
-		}
-		else
-		{
-		    if (i >= 0)
-		    {
-			// Delete an existing entry using the same code.
-#ifdef FEAT_EVAL
-			ch_log(NULL, "got_code_from_term(): Deleting entry %c%c with matching keys %s",
-			      termcodes[i].name[0], termcodes[i].name[1], str);
-#endif
-			del_termcode_idx(i);
-		    }
-#ifdef FEAT_EVAL
-		    else
-			ch_log(NULL, "got_code_from_term(): Adding entry %c%c with keys %s",
-							name[0], name[1], str);
-#endif
-		    add_termcode(name, str, ATC_FROM_TERM);
-		}
-	    }
-	}
-    }
-
-    // May request more codes now that we received one.
-    ++xt_index_in;
-    req_more_codes_from_term();
-}
-
-/*
- * Check if there are any unanswered requests and deal with them.
- * This is called before starting an external program or getting direct
- * keyboard input.  We don't want responses to be send to that program or
- * handled as typed text.
- */
-    static void
-check_for_codes_from_term(void)
-{
-    int		c;
-
-    // If no codes requested or all are answered, no need to wait.
-    if (xt_index_out == 0 || xt_index_out == xt_index_in)
-	return;
-
-    // Vgetc() will check for and handle any response.
-    // Keep calling vpeekc() until we don't get any responses.
-    ++no_mapping;
-    ++allow_keys;
-    for (;;)
-    {
-	c = vpeekc();
-	if (c == NUL)	    // nothing available
-	    break;
-
-	// If a response is recognized it's replaced with K_IGNORE, must read
-	// it from the input stream.  If there is no K_IGNORE we can't do
-	// anything, break here (there might be some responses further on, but
-	// we don't want to throw away any typed chars).
-	if (c != K_SPECIAL && c != K_IGNORE)
-	    break;
-	c = vgetc();
-	if (c != K_IGNORE)
-	{
-	    vungetc(c);
-	    break;
-	}
-    }
-    --no_mapping;
-    --allow_keys;
-}
-#endif
-
-#if (defined(MSWIN) && (!defined(FEAT_GUI) || defined(VIMDLL))) || defined(PROTO)
-static char ksme_str[20];
-static char ksmr_str[20];
-static char ksmd_str[20];
-
-/*
- * For Win32 console: update termcap codes for existing console attributes.
- */
-    void
-update_tcap(int attr)
-{
-    sprintf(ksme_str, "\033|%dm", attr);
-    sprintf(ksmd_str, "\033|%dm", attr | 0x08);  // FOREGROUND_INTENSITY
-    sprintf(ksmr_str, "\033|%dm", ((attr & 0x0F) << 4) | ((attr & 0xF0) >> 4));
-
-    tcap_entry_T *p = find_builtin_term(DEFAULT_TERM);
-    if (p == NULL)  // did not find it
-	return;
-    while (p->bt_string != NULL)
-    {
-      if (p->bt_entry == (int)KS_ME)
-	  p->bt_string = &ksme_str[0];
-      else if (p->bt_entry == (int)KS_MR)
-	  p->bt_string = &ksmr_str[0];
-      else if (p->bt_entry == (int)KS_MD)
-	  p->bt_string = &ksmd_str[0];
-      ++p;
-    }
-}
-
-# ifdef FEAT_TERMGUICOLORS
-#  define KSSIZE 20
-
-typedef enum
-{
-    CMODE_INDEXED = 0,	// Use cmd.exe 4bit palette.
-    CMODE_RGB,		// Use 24bit RGB colors using VTP.
-    CMODE_256COL,	// Emulate xterm's 256-color palette using VTP.
-    CMODE_LAST,
-} cmode_T;
-
-struct ks_tbl_S
-{
-    int  code;				// value of KS_
-    char *vtp;				// code in RGB mode
-    char *vtp2;				// code in 256color mode
-    char buf[CMODE_LAST][KSSIZE];	// real buffer
-};
-
-static struct ks_tbl_S ks_tbl[] =
-{
-    {(int)KS_ME,  "\033|0m",  "\033|0m", {""}},   // normal
-    {(int)KS_MR,  "\033|7m",  "\033|7m", {""}},   // reverse
-    {(int)KS_MD,  "\033|1m",  "\033|1m", {""}},   // bold
-    {(int)KS_SO,  "\033|91m", "\033|91m", {""}},  // standout: bright red text
-    {(int)KS_SE,  "\033|39m", "\033|39m", {""}},  // standout end: default color
-    {(int)KS_CZH, "\033|3m",  "\033|3m", {""}},   // italic
-    {(int)KS_CZR, "\033|0m",  "\033|0m", {""}},   // italic end
-    {(int)KS_US,  "\033|4m",  "\033|4m", {""}},   // underscore
-    {(int)KS_UE,  "\033|24m", "\033|24m", {""}},  // underscore end
-#  ifdef TERMINFO
-    {(int)KS_CAB, "\033|%p1%db", "\033|%p14%dm", {""}}, // set background color
-    {(int)KS_CAF, "\033|%p1%df", "\033|%p13%dm", {""}}, // set foreground color
-    {(int)KS_CS,  "\033|%p1%d;%p2%dR", "\033|%p1%d;%p2%dR", {""}},
-    {(int)KS_CSV, "\033|%p1%d;%p2%dV", "\033|%p1%d;%p2%dV", {""}},
-#  else
-    {(int)KS_CAB, "\033|%db", "\033|4%dm", {""}}, // set background color
-    {(int)KS_CAF, "\033|%df", "\033|3%dm", {""}}, // set foreground color
-    {(int)KS_CS,  "\033|%d;%dR", "\033|%d;%dR", {""}},
-    {(int)KS_CSV, "\033|%d;%dV", "\033|%d;%dV", {""}},
-#  endif
-    {(int)KS_CCO, "256", "256", {""}},	    // colors
-    {(int)KS_NAME, NULL, NULL, {""}}			    // terminator
-};
-
-/*
- * Find the first entry for "code" in the builtin termcap for "name".
- * Returns NULL when not found.
- */
-    static tcap_entry_T *
-find_first_tcap(
-    char_u *name,
-    int	    code)
-{
-    tcap_entry_T *p = find_builtin_term(name);
-    if (p == NULL)
-	return NULL;
-    while (p->bt_string != NULL)
-    {
-	if (p->bt_entry == code)
-	    return p;
-	++p;
-    }
-    return NULL;
-}
-# endif
-
-/*
- * For Win32 console: replace the sequence immediately after termguicolors.
- */
-    void
-swap_tcap(void)
-{
-# ifdef FEAT_TERMGUICOLORS
-    static int		init_done = FALSE;
-    static cmode_T	curr_mode;
-    struct ks_tbl_S	*ks;
-    cmode_T		mode;
-
-    if (!init_done)
-    {
-	for (ks = ks_tbl; ks->code != (int)KS_NAME; ks++)
-	{
-	    tcap_entry_T *bt = find_first_tcap(DEFAULT_TERM, ks->code);
-	    if (bt != NULL)
-	    {
-		// Preserve the original value.
-		STRNCPY(ks->buf[CMODE_INDEXED], bt->bt_string, KSSIZE);
-		STRNCPY(ks->buf[CMODE_RGB], ks->vtp, KSSIZE);
-		STRNCPY(ks->buf[CMODE_256COL], ks->vtp2, KSSIZE);
-
-		bt->bt_string = ks->buf[CMODE_INDEXED];
-	    }
-	}
-	init_done = TRUE;
-	curr_mode = CMODE_INDEXED;
-    }
-
-    if (p_tgc)
-	mode = CMODE_RGB;
-    else if (t_colors >= 256)
-	mode = CMODE_256COL;
-    else
-	mode = CMODE_INDEXED;
-
-    if (mode == curr_mode)
-	return;
-
-    for (ks = ks_tbl; ks->code != (int)KS_NAME; ks++)
-    {
-	tcap_entry_T *bt = find_first_tcap(DEFAULT_TERM, ks->code);
-	if (bt != NULL)
-	    bt->bt_string = ks->buf[mode];
-    }
-
-    curr_mode = mode;
-# endif
-}
-
-#endif
-
-
-#if (defined(MSWIN) && (!defined(FEAT_GUI_MSWIN) || defined(VIMDLL))) || defined(FEAT_TERMINAL) \
-	|| defined(PROTO)
-static int cube_value[] = {
-    0x00, 0x5F, 0x87, 0xAF, 0xD7, 0xFF
-};
-
-static int grey_ramp[] = {
-    0x08, 0x12, 0x1C, 0x26, 0x30, 0x3A, 0x44, 0x4E, 0x58, 0x62, 0x6C, 0x76,
-    0x80, 0x8A, 0x94, 0x9E, 0xA8, 0xB2, 0xBC, 0xC6, 0xD0, 0xDA, 0xE4, 0xEE
-};
-
-static const char_u ansi_table[16][3] = {
-//   R    G    B
-  {  0,   0,   0}, // black
-  {224,   0,   0}, // dark red
-  {  0, 224,   0}, // dark green
-  {224, 224,   0}, // dark yellow / brown
-  {  0,   0, 224}, // dark blue
-  {224,   0, 224}, // dark magenta
-  {  0, 224, 224}, // dark cyan
-  {224, 224, 224}, // light grey
-
-  {128, 128, 128}, // dark grey
-  {255,  64,  64}, // light red
-  { 64, 255,  64}, // light green
-  {255, 255,  64}, // yellow
-  { 64,  64, 255}, // light blue
-  {255,  64, 255}, // light magenta
-  { 64, 255, 255}, // light cyan
-  {255, 255, 255}, // white
-};
-
-#if defined(MSWIN)
-// Mapping between cterm indices < 16 and their counterpart in the ANSI palette.
-static const char_u cterm_ansi_idx[] = {
-    0, 4, 2, 6, 1, 5, 3, 7, 8, 12, 10, 14, 9, 13, 11, 15
-};
-#endif
-
-#define ANSI_INDEX_NONE 0
-
-    void
-ansi_color2rgb(int nr, char_u *r, char_u *g, char_u *b, char_u *ansi_idx)
-{
-    if (nr < 16)
-    {
-	*r = ansi_table[nr][0];
-	*g = ansi_table[nr][1];
-	*b = ansi_table[nr][2];
-	*ansi_idx = nr;
-    }
-    else
-    {
-	*r = 0;
-	*g = 0;
-	*b = 0;
-	*ansi_idx = ANSI_INDEX_NONE;
-    }
-}
-
-    void
-cterm_color2rgb(int nr, char_u *r, char_u *g, char_u *b, char_u *ansi_idx)
-{
-    int idx;
-
-    if (nr < 16)
-    {
-#if defined(MSWIN)
-	idx = cterm_ansi_idx[nr];
-#else
-	idx = nr;
-#endif
-	*r = ansi_table[idx][0];
-	*g = ansi_table[idx][1];
-	*b = ansi_table[idx][2];
-	*ansi_idx = idx + 1;
-    }
-    else if (nr < 232)
-    {
-	// 216 color cube
-	idx = nr - 16;
-	*r = cube_value[idx / 36 % 6];
-	*g = cube_value[idx / 6  % 6];
-	*b = cube_value[idx      % 6];
-	*ansi_idx = ANSI_INDEX_NONE;
-    }
-    else if (nr < 256)
-    {
-	// 24 grey scale ramp
-	idx = nr - 232;
-	*r = grey_ramp[idx];
-	*g = grey_ramp[idx];
-	*b = grey_ramp[idx];
-	*ansi_idx = ANSI_INDEX_NONE;
-    }
-    else
-    {
-	*r = 0;
-	*g = 0;
-	*b = 0;
-	*ansi_idx = ANSI_INDEX_NONE;
-    }
-}
-#endif
-
-/*
- * Replace K_BS by <BS> and K_DEL by <DEL>.
- * Include any modifiers into the key and drop them.
- * Returns "len" adjusted for replaced codes.
- */
-    int
-term_replace_keycodes(char_u *ta_buf, int ta_len, int len_arg)
-{
-    int		len = len_arg;
-    int		i;
-    int		c;
-
-    for (i = ta_len; i < ta_len + len; ++i)
-    {
-	if (ta_buf[i] == CSI && len - i > 3 && ta_buf[i + 1] == KS_MODIFIER)
-	{
-	    int modifiers = ta_buf[i + 2];
-	    int key = ta_buf[i + 3];
-
-	    // Try to use the modifier to modify the key.  In any case drop the
-	    // modifier.
-	    mch_memmove(ta_buf + i + 1, ta_buf + i + 4, (size_t)(len - i - 3));
-	    len -= 3;
-	    if (key < 0x80)
-		key = merge_modifyOtherKeys(key, &modifiers);
-	    ta_buf[i] = key;
-	}
-	else if (ta_buf[i] == CSI && len - i > 2)
-	{
-	    c = TERMCAP2KEY(ta_buf[i + 1], ta_buf[i + 2]);
-	    if (c == K_DEL || c == K_KDEL || c == K_BS)
-	    {
-		mch_memmove(ta_buf + i + 1, ta_buf + i + 3,
-							(size_t)(len - i - 2));
-		if (c == K_DEL || c == K_KDEL)
-		    ta_buf[i] = DEL;
-		else
-		    ta_buf[i] = Ctrl_H;
-		len -= 2;
-	    }
-	}
-	else if (ta_buf[i] == '\r')
-	    ta_buf[i] = '\n';
-	if (has_mbyte)
-	    i += (*mb_ptr2len_len)(ta_buf + i, ta_len + len - i) - 1;
-    }
-    return len;
-}
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * VIM - Vi IMproved	by Bram Moolenaar
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+/*
+ *
+ * term.c: functions for controlling the terminal
+ *
+ * primitive termcap support for Amiga and Win32 included
+ *
+ * NOTE: padding and variable substitution is not performed,
+ * when compiling without HAVE_TGETENT, we use tputs() and tgoto() dummies.
+ */
+
+/*
+ * Some systems have a prototype for tgetstr() with (char *) instead of
+ * (char **). This define removes that prototype. We include our own prototype
+ * below.
+ */
+#define tgetstr tgetstr_defined_wrong
+
+#include "vim.h"
+
+#ifdef HAVE_TGETENT
+# ifdef HAVE_TERMIOS_H
+#  include <termios.h>	    // seems to be required for some Linux
+# endif
+# ifdef HAVE_TERMCAP_H
+#  include <termcap.h>
+# endif
+
+/*
+ * A few linux systems define outfuntype in termcap.h to be used as the third
+ * argument for tputs().
+ */
+# if defined(VMS) || defined(AMIGA)
+#  define TPUTSFUNCAST (void (*)(unsigned int))
+# else
+#  ifdef HAVE_OUTFUNTYPE
+#   define TPUTSFUNCAST (outfuntype)
+#  else
+#   define TPUTSFUNCAST (int (*)(int))
+#  endif
+# endif
+#endif
+
+#undef tgetstr
+
+// start of keys that are not directly used by Vim but can be mapped
+#define BT_EXTRA_KEYS	0x101
+
+static void parse_builtin_tcap(char_u *s);
+static void gather_termleader(void);
+#ifdef FEAT_TERMRESPONSE
+static void req_codes_from_term(void);
+static void req_more_codes_from_term(void);
+static void got_code_from_term(char_u *code, int len);
+static void check_for_codes_from_term(void);
+#endif
+static void del_termcode_idx(int idx);
+static int find_term_bykeys(char_u *src);
+static int term_is_builtin(char_u *name);
+static int term_7to8bit(char_u *p);
+static void accept_modifiers_for_function_keys(void);
+
+    // Change this to "if 1" to debug what happens with termresponse.
+#  if 0
+#   define DEBUG_TERMRESPONSE
+static void log_tr(const char *fmt, ...) ATTRIBUTE_FORMAT_PRINTF(1, 2);
+#   define LOG_TR(msg) log_tr msg
+#  else
+#   define LOG_TR(msg) do { /**/ } while (0)
+#  endif
+
+#ifdef HAVE_TGETENT
+static char *invoke_tgetent(char_u *, char_u *);
+
+/*
+ * Here is our own prototype for tgetstr(), any prototypes from the include
+ * files have been disabled by the define at the start of this file.
+ */
+char		*tgetstr(char *, char **);
+#endif
+
+typedef enum {
+    STATUS_GET,		// send request when switching to RAW mode
+    STATUS_SENT,	// did send request, checking for response
+    STATUS_GOT,		// received response
+    STATUS_FAIL		// timed out
+} request_progress_T;
+
+typedef struct {
+    request_progress_T	    tr_progress;
+    time_t		    tr_start;	// when request was sent, -1 for never
+} termrequest_T;
+
+# define TERMREQUEST_INIT {STATUS_GET, -1}
+
+// Request Terminal Version status:
+static termrequest_T crv_status = TERMREQUEST_INIT;
+
+// Request Cursor position report:
+static termrequest_T u7_status = TERMREQUEST_INIT;
+
+// Request xterm compatibility check:
+static termrequest_T xcc_status = TERMREQUEST_INIT;
+
+#ifdef FEAT_TERMRESPONSE
+# ifdef FEAT_TERMINAL
+// Request foreground color report:
+static termrequest_T rfg_status = TERMREQUEST_INIT;
+static int fg_r = 0;
+static int fg_g = 0;
+static int fg_b = 0;
+static int bg_r = 255;
+static int bg_g = 255;
+static int bg_b = 255;
+# endif
+
+// Request background color report:
+static termrequest_T rbg_status = TERMREQUEST_INIT;
+
+// Request cursor blinking mode report:
+static termrequest_T rbm_status = TERMREQUEST_INIT;
+
+// Request cursor style report:
+static termrequest_T rcs_status = TERMREQUEST_INIT;
+
+// Request window's position report:
+static termrequest_T winpos_status = TERMREQUEST_INIT;
+
+static termrequest_T *all_termrequests[] = {
+    &crv_status,
+    &u7_status,
+    &xcc_status,
+#  ifdef FEAT_TERMINAL
+    &rfg_status,
+#  endif
+    &rbg_status,
+    &rbm_status,
+    &rcs_status,
+    &winpos_status,
+    NULL
+};
+
+// The t_8u code may default to a value but get reset when the term response is
+// received.  To avoid redrawing too often, only redraw when t_8u is not reset
+// and it was supposed to be written.  Unless t_8u was set explicitly.
+// FALSE -> don't output t_8u yet
+// MAYBE -> tried outputting t_8u while FALSE
+// OK    -> can write t_8u
+int write_t_8u_state = FALSE;
+#endif
+
+#ifdef HAVE_TGETENT
+/*
+ * Don't declare these variables if termcap.h contains them.
+ * Autoconf checks if these variables should be declared extern (not all
+ * systems have them).
+ * Some versions define ospeed to be speed_t, but that is incompatible with
+ * BSD, where ospeed is short and speed_t is long.
+ */
+# ifndef HAVE_OSPEED
+#  ifdef OSPEED_EXTERN
+extern short ospeed;
+#   else
+short ospeed;
+#   endif
+# endif
+# ifndef HAVE_UP_BC_PC
+#  ifdef UP_BC_PC_EXTERN
+extern char *UP, *BC, PC;
+#  else
+char *UP, *BC, PC;
+#  endif
+# endif
+
+# define TGETSTR(s, p)	vim_tgetstr((s), (p))
+# define TGETENT(b, t)	tgetent((char *)(b), (char *)(t))
+static char_u *vim_tgetstr(char *s, char_u **pp);
+#endif // HAVE_TGETENT
+
+static int  detected_8bit = FALSE;	// detected 8-bit terminal
+
+#if (defined(UNIX) || defined(VMS))
+static int focus_state = MAYBE; // TRUE if the Vim window has focus
+#endif
+
+#ifdef FEAT_TERMRESPONSE
+// When the cursor shape was detected these values are used:
+// 1: block, 2: underline, 3: vertical bar
+static int initial_cursor_shape = 0;
+
+// The blink flag from the style response may be inverted from the actual
+// blinking state, xterm XORs the flags.
+static int initial_cursor_shape_blink = FALSE;
+
+// The blink flag from the blinking-cursor mode response
+static int initial_cursor_blink = FALSE;
+#endif
+
+/*
+ * The builtin termcap entries.
+ *
+ * The entries are also included when HAVE_TGETENT is defined, the system
+ * termcap may be incomplete and a few Vim-specific entries are added.
+ *
+ * When HAVE_TGETENT is defined, the builtin entries can be accessed with
+ * "builtin_amiga", "builtin_ansi", "builtin_debug", etc.
+ *
+ * Each termcap is a list of tcap_entry_T.  See parse_builtin_tcap() for all
+ * details.
+ *
+ * Entries marked with "guessed" may be wrong.
+ */
+typedef struct
+{
+    int		bt_entry;   // either a KS_xxx code (>= 0), or a K_xxx code.
+    char	*bt_string; // value
+} tcap_entry_T;
+
+/*
+ * Standard ANSI terminal, default for Unix.
+ */
+static tcap_entry_T builtin_ansi[] = {
+    {(int)KS_CE,	"\033[K"},
+    {(int)KS_AL,	"\033[L"},
+#  ifdef TERMINFO
+    {(int)KS_CAL,	"\033[%p1%dL"},
+#  else
+    {(int)KS_CAL,	"\033[%dL"},
+#  endif
+    {(int)KS_DL,	"\033[M"},
+#  ifdef TERMINFO
+    {(int)KS_CDL,	"\033[%p1%dM"},
+#  else
+    {(int)KS_CDL,	"\033[%dM"},
+#  endif
+    {(int)KS_CL,	"\033[H\033[2J"},
+    {(int)KS_ME,	"\033[0m"},
+    {(int)KS_MR,	"\033[7m"},
+    {(int)KS_MS,	"y"},
+    {(int)KS_UT,	"y"},		// guessed
+    {(int)KS_LE,	"\b"},
+#  ifdef TERMINFO
+    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
+#  else
+    {(int)KS_CM,	"\033[%i%d;%dH"},
+#  endif
+#  ifdef TERMINFO
+    {(int)KS_CRI,	"\033[%p1%dC"},
+#  else
+    {(int)KS_CRI,	"\033[%dC"},
+#  endif
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * VT320 is working as an ANSI terminal compatible DEC terminal.
+ * (it covers VT1x0, VT2x0 and VT3x0 up to VT320 on VMS as well)
+ * TODO:- rewrite ESC[ codes to CSI
+ *      - keyboard languages (CSI ? 26 n)
+ */
+static tcap_entry_T builtin_vt320[] = {
+    {(int)KS_CE,	"\033[K"},
+    {(int)KS_AL,	"\033[L"},
+#  ifdef TERMINFO
+    {(int)KS_CAL,	"\033[%p1%dL"},
+#  else
+    {(int)KS_CAL,	"\033[%dL"},
+#  endif
+    {(int)KS_DL,	"\033[M"},
+#  ifdef TERMINFO
+    {(int)KS_CDL,	"\033[%p1%dM"},
+#  else
+    {(int)KS_CDL,	"\033[%dM"},
+#  endif
+    {(int)KS_CL,	"\033[H\033[2J"},
+    {(int)KS_CD,	"\033[J"},
+    {(int)KS_CCO,	"8"},			// allow 8 colors
+    {(int)KS_ME,	"\033[0m"},
+    {(int)KS_MR,	"\033[7m"},
+    {(int)KS_MD,	"\033[1m"},  // bold mode
+    {(int)KS_SE,	"\033[22m"},// normal mode
+    {(int)KS_UE,	"\033[24m"},// exit underscore mode
+    {(int)KS_US,	"\033[4m"},  // underscore mode
+    {(int)KS_CZH,	"\033[34;43m"},  // italic mode: blue text on yellow
+    {(int)KS_CZR,	"\033[0m"},	    // italic mode end
+    {(int)KS_CAB,	"\033[4%dm"},	    // set background color (ANSI)
+    {(int)KS_CAF,	"\033[3%dm"},	    // set foreground color (ANSI)
+    {(int)KS_CSB,	"\033[102;%dm"},	// set screen background color
+    {(int)KS_CSF,	"\033[101;%dm"},	// set screen foreground color
+    {(int)KS_MS,	"y"},
+    {(int)KS_UT,	"y"},
+    {(int)KS_XN,	"y"},
+    {(int)KS_LE,	"\b"},
+#  ifdef TERMINFO
+    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
+#  else
+    {(int)KS_CM,	"\033[%i%d;%dH"},
+#  endif
+#  ifdef TERMINFO
+    {(int)KS_CRI,	"\033[%p1%dC"},
+#  else
+    {(int)KS_CRI,	"\033[%dC"},
+#  endif
+    {K_UP,		"\033[A"},
+    {K_DOWN,		"\033[B"},
+    {K_RIGHT,		"\033[C"},
+    {K_LEFT,		"\033[D"},
+    // Note: cursor key sequences for application cursor mode are omitted,
+    // because they interfere with typed commands: <Esc>OA.
+    {K_F1,		"\033[11~"},
+    {K_F2,		"\033[12~"},
+    {K_F3,		"\033[13~"},
+    {K_F4,		"\033[14~"},
+    {K_F5,		"\033[15~"},
+    {K_F6,		"\033[17~"},
+    {K_F7,		"\033[18~"},
+    {K_F8,		"\033[19~"},
+    {K_F9,		"\033[20~"},
+    {K_F10,		"\033[21~"},
+    {K_F11,		"\033[23~"},
+    {K_F12,		"\033[24~"},
+    {K_F13,		"\033[25~"},
+    {K_F14,		"\033[26~"},
+    {K_F15,		"\033[28~"},	// Help
+    {K_F16,		"\033[29~"},	// Select
+    {K_F17,		"\033[31~"},
+    {K_F18,		"\033[32~"},
+    {K_F19,		"\033[33~"},
+    {K_F20,		"\033[34~"},
+    {K_INS,		"\033[2~"},
+    {K_DEL,		"\033[3~"},
+    {K_HOME,		"\033[1~"},
+    {K_END,		"\033[4~"},
+    {K_PAGEUP,		"\033[5~"},
+    {K_PAGEDOWN,	"\033[6~"},
+    // These sequences starting with <Esc> O may interfere with what the user
+    // is typing.  Remove these if that bothers you.
+    {K_KPLUS,		"\033Ok"},	// keypad plus
+    {K_KMINUS,		"\033Om"},	// keypad minus
+    {K_KDIVIDE,		"\033Oo"},	// keypad /
+    {K_KMULTIPLY,	"\033Oj"},	// keypad *
+    {K_KENTER,		"\033OM"},	// keypad Enter
+    {K_K0,		"\033Op"},	// keypad 0
+    {K_K1,		"\033Oq"},	// keypad 1
+    {K_K2,		"\033Or"},	// keypad 2
+    {K_K3,		"\033Os"},	// keypad 3
+    {K_K4,		"\033Ot"},	// keypad 4
+    {K_K5,		"\033Ou"},	// keypad 5
+    {K_K6,		"\033Ov"},	// keypad 6
+    {K_K7,		"\033Ow"},	// keypad 7
+    {K_K8,		"\033Ox"},	// keypad 8
+    {K_K9,		"\033Oy"},	// keypad 9
+    {K_BS,		"\x7f"},	// for some reason 0177 doesn't work
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * Ordinary vt52
+ */
+static tcap_entry_T builtin_vt52[] = {
+    {(int)KS_CE,	"\033K"},
+    {(int)KS_CD,	"\033J"},
+#  ifdef TERMINFO
+    {(int)KS_CM,	"\033Y%p1%' '%+%c%p2%' '%+%c"},
+#  else
+    {(int)KS_CM,	"\033Y%+ %+ "},
+#  endif
+    {(int)KS_LE,	"\b"},
+    {(int)KS_SR,	"\033I"},
+    {(int)KS_AL,	"\033L"},
+    {(int)KS_DL,	"\033M"},
+    {K_UP,		"\033A"},
+    {K_DOWN,		"\033B"},
+    {K_LEFT,		"\033D"},
+    {K_RIGHT,		"\033C"},
+    {K_F1,		"\033P"},
+    {K_F2,		"\033Q"},
+    {K_F3,		"\033R"},
+    {(int)KS_CL,	"\033H\033J"},
+    {(int)KS_MS,	"y"},
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * Builtin xterm with Vim-specific entries.
+ */
+static tcap_entry_T builtin_xterm[] = {
+    {(int)KS_CE,	"\033[K"},
+    {(int)KS_AL,	"\033[L"},
+#  ifdef TERMINFO
+    {(int)KS_CAL,	"\033[%p1%dL"},
+#  else
+    {(int)KS_CAL,	"\033[%dL"},
+#  endif
+    {(int)KS_DL,	"\033[M"},
+#  ifdef TERMINFO
+    {(int)KS_CDL,	"\033[%p1%dM"},
+#  else
+    {(int)KS_CDL,	"\033[%dM"},
+#  endif
+#  ifdef TERMINFO
+    {(int)KS_CS,	"\033[%i%p1%d;%p2%dr"},
+#  else
+    {(int)KS_CS,	"\033[%i%d;%dr"},
+#  endif
+    {(int)KS_CL,	"\033[H\033[2J"},
+    {(int)KS_CD,	"\033[J"},
+    {(int)KS_ME,	"\033[m"},
+    {(int)KS_MR,	"\033[7m"},
+    {(int)KS_MD,	"\033[1m"},
+    {(int)KS_UE,	"\033[m"},
+    {(int)KS_US,	"\033[4m"},
+    {(int)KS_STE,	"\033[29m"},
+    {(int)KS_STS,	"\033[9m"},
+    {(int)KS_MS,	"y"},
+    {(int)KS_UT,	"y"},
+    {(int)KS_LE,	"\b"},
+    {(int)KS_VI,	"\033[?25l"},
+    {(int)KS_VE,	"\033[?25h"},
+    {(int)KS_VS,	"\033[?12h"},
+    {(int)KS_CVS,	"\033[?12l"},
+#  ifdef TERMINFO
+    {(int)KS_CSH,	"\033[%p1%d q"},
+#  else
+    {(int)KS_CSH,	"\033[%d q"},
+#  endif
+    {(int)KS_CRC,	"\033[?12$p"},
+    {(int)KS_CRS,	"\033P$q q\033\\"},
+#  ifdef TERMINFO
+    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
+#  else
+    {(int)KS_CM,	"\033[%i%d;%dH"},
+#  endif
+    {(int)KS_SR,	"\033M"},
+#  ifdef TERMINFO
+    {(int)KS_CRI,	"\033[%p1%dC"},
+#  else
+    {(int)KS_CRI,	"\033[%dC"},
+#  endif
+    {(int)KS_KS,	"\033[?1h\033="},
+    {(int)KS_KE,	"\033[?1l\033>"},
+#  ifdef FEAT_XTERM_SAVE
+    {(int)KS_TI,	"\0337\033[?47h"},
+    {(int)KS_TE,	"\033[?47l\0338"},
+#  endif
+    // These are now under control of the 'keyprotocol' option, see
+    // "builtin_mok2".
+    // {(int)KS_CTI,	"\033[>4;2m"},
+    // {(int)KS_CRK,	"\033[?4m"},
+    // {(int)KS_CTE,	"\033[>4;m"},
+    {(int)KS_CIS,	"\033]1;"},
+    {(int)KS_CIE,	"\007"},
+    {(int)KS_TS,	"\033]2;"},
+    {(int)KS_FS,	"\007"},
+    {(int)KS_CSC,	"\033]12;"},
+    {(int)KS_CEC,	"\007"},
+#  ifdef TERMINFO
+    {(int)KS_CWS,	"\033[8;%p1%d;%p2%dt"},
+    {(int)KS_CWP,	"\033[3;%p1%d;%p2%dt"},
+    {(int)KS_CGP,	"\033[13t"},
+#  else
+    {(int)KS_CWS,	"\033[8;%d;%dt"},
+    {(int)KS_CWP,	"\033[3;%d;%dt"},
+    {(int)KS_CGP,	"\033[13t"},
+#  endif
+    {(int)KS_CRV,	"\033[>c"},
+    {(int)KS_CXM,	"\033[?1006;1000%?%p1%{1}%=%th%el%;"},
+    {(int)KS_RFG,	"\033]10;?\007"},
+    {(int)KS_RBG,	"\033]11;?\007"},
+    {(int)KS_U7,	"\033[6n"},
+    {(int)KS_CAU,	"\033[58;5;%dm"},
+    {(int)KS_CBE,	"\033[?2004h"},
+    {(int)KS_CBD,	"\033[?2004l"},
+    {(int)KS_CST,	"\033[22;2t"},
+    {(int)KS_CRT,	"\033[23;2t"},
+    {(int)KS_SSI,	"\033[22;1t"},
+    {(int)KS_SRI,	"\033[23;1t"},
+#  if (defined(UNIX) || defined(VMS))
+    {(int)KS_FD,	"\033[?1004l"},
+    {(int)KS_FE,	"\033[?1004h"},
+#  endif
+
+    {K_UP,		"\033O*A"},
+    {K_DOWN,		"\033O*B"},
+    {K_RIGHT,		"\033O*C"},
+    {K_LEFT,		"\033O*D"},
+    // An extra set of cursor keys for vt100 mode
+    {K_XUP,		"\033[@;*A"},	// Esc [ A or Esc [ 1 ; A
+    {K_XDOWN,		"\033[@;*B"},	// Esc [ B or Esc [ 1 ; B
+    {K_XRIGHT,		"\033[@;*C"},	// Esc [ C or Esc [ 1 ; C
+    {K_XLEFT,		"\033[@;*D"},	// Esc [ D or Esc [ 1 ; D
+    // An extra set of function keys for vt100 mode
+    {K_XF1,		"\033O*P"},
+    {K_XF2,		"\033O*Q"},
+    {K_XF3,		"\033O*R"},
+    {K_XF4,		"\033O*S"},
+    {K_F1,		"\033[11;*~"},
+    {K_F2,		"\033[12;*~"},
+    {K_F3,		"\033[13;*~"},
+    {K_F4,		"\033[14;*~"},
+    {K_F5,		"\033[15;*~"},
+    {K_F6,		"\033[17;*~"},
+    {K_F7,		"\033[18;*~"},
+    {K_F8,		"\033[19;*~"},
+    {K_F9,		"\033[20;*~"},
+    {K_F10,		"\033[21;*~"},
+    {K_F11,		"\033[23;*~"},
+    {K_F12,		"\033[24;*~"},
+    {K_S_TAB,		"\033[Z"},
+    {K_HELP,		"\033[28;*~"},
+    {K_UNDO,		"\033[26;*~"},
+    {K_INS,		"\033[2;*~"},
+    {K_HOME,		"\033[@;*H"},    // Esc [ H  or Esc 1 ; H
+    // {K_S_HOME,		"\033O2H"},
+    // {K_C_HOME,		"\033O5H"},
+    {K_KHOME,		"\033[1;*~"},
+    {K_XHOME,		"\033O*H"},	// other Home
+    {K_ZHOME,		"\033[7;*~"},	// other Home
+    {K_END,		"\033[@;*F"},	// Esc [ F or Esc 1 ; F
+    // {K_S_END,		"\033O2F"},
+    // {K_C_END,		"\033O5F"},
+    {K_KEND,		"\033[4;*~"},
+    {K_XEND,		"\033O*F"},	// other End
+    {K_ZEND,		"\033[8;*~"},
+    {K_PAGEUP,		"\033[5;*~"},
+    {K_PAGEDOWN,	"\033[6;*~"},
+    {K_KPLUS,		"\033O*k"},     // keypad plus
+    {K_KMINUS,		"\033O*m"},     // keypad minus
+    {K_KDIVIDE,		"\033O*o"},     // keypad /
+    {K_KMULTIPLY,	"\033O*j"},     // keypad *
+    {K_KENTER,		"\033O*M"},     // keypad Enter
+    {K_KPOINT,		"\033O*n"},     // keypad .
+    {K_K0,		"\033O*p"},     // keypad 0
+    {K_K1,		"\033O*q"},     // keypad 1
+    {K_K2,		"\033O*r"},     // keypad 2
+    {K_K3,		"\033O*s"},     // keypad 3
+    {K_K4,		"\033O*t"},     // keypad 4
+    {K_K5,		"\033O*u"},     // keypad 5
+    {K_K6,		"\033O*v"},     // keypad 6
+    {K_K7,		"\033O*w"},     // keypad 7
+    {K_K8,		"\033O*x"},     // keypad 8
+    {K_K9,		"\033O*y"},     // keypad 9
+    {K_KDEL,		"\033[3;*~"}, // keypad Del
+    {K_PS,		"\033[200~"}, // paste start
+    {K_PE,		"\033[201~"}, // paste end
+
+    {BT_EXTRA_KEYS,   ""},
+    {TERMCAP2KEY('k', '0'), "\033[10;*~"}, // F0
+    {TERMCAP2KEY('F', '3'), "\033[25;*~"}, // F13
+    // F14 and F15 are missing, because they send the same codes as the undo
+    // and help key, although they don't work on all keyboards.
+    {TERMCAP2KEY('F', '6'), "\033[29;*~"}, // F16
+    {TERMCAP2KEY('F', '7'), "\033[31;*~"}, // F17
+    {TERMCAP2KEY('F', '8'), "\033[32;*~"}, // F18
+    {TERMCAP2KEY('F', '9'), "\033[33;*~"}, // F19
+    {TERMCAP2KEY('F', 'A'), "\033[34;*~"}, // F20
+
+    {TERMCAP2KEY('F', 'B'), "\033[42;*~"}, // F21
+    {TERMCAP2KEY('F', 'C'), "\033[43;*~"}, // F22
+    {TERMCAP2KEY('F', 'D'), "\033[44;*~"}, // F23
+    {TERMCAP2KEY('F', 'E'), "\033[45;*~"}, // F24
+    {TERMCAP2KEY('F', 'F'), "\033[46;*~"}, // F25
+    {TERMCAP2KEY('F', 'G'), "\033[47;*~"}, // F26
+    {TERMCAP2KEY('F', 'H'), "\033[48;*~"}, // F27
+    {TERMCAP2KEY('F', 'I'), "\033[49;*~"}, // F28
+    {TERMCAP2KEY('F', 'J'), "\033[50;*~"}, // F29
+    {TERMCAP2KEY('F', 'K'), "\033[51;*~"}, // F30
+
+    {TERMCAP2KEY('F', 'L'), "\033[52;*~"}, // F31
+    {TERMCAP2KEY('F', 'M'), "\033[53;*~"}, // F32
+    {TERMCAP2KEY('F', 'N'), "\033[54;*~"}, // F33
+    {TERMCAP2KEY('F', 'O'), "\033[55;*~"}, // F34
+    {TERMCAP2KEY('F', 'P'), "\033[56;*~"}, // F35
+    {TERMCAP2KEY('F', 'Q'), "\033[57;*~"}, // F36
+    {TERMCAP2KEY('F', 'R'), "\033[58;*~"}, // F37
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * Additions for using modifyOtherKeys level 2.  Same as what is used for
+ * xterm.
+ */
+static tcap_entry_T builtin_mok2[] = {
+    // t_TI enables modifyOtherKeys level 2
+    {(int)KS_CTI,	"\033[>4;2m"},
+
+    // XTQMODKEYS was added in xterm version 377: "CSI ? 4 m" which should
+    // return "{lead} > 4 ; Pv m".  Before version 377 we expect it to have no
+    // effect.
+    {(int)KS_CRK,	"\033[?4m"},
+
+    // t_TE disables modifyOtherKeys
+    {(int)KS_CTE,	"\033[>4;m"},
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * Additions for using the Kitty keyboard protocol.
+ */
+static tcap_entry_T builtin_kitty[] = {
+    // t_TI enables the kitty keyboard protocol.
+    {(int)KS_CTI,	"\033[=1;1u"},
+
+    // t_RK requests the kitty keyboard protocol state
+    {(int)KS_CRK,	"\033[?u"},
+
+    // t_TE also disables modifyOtherKeys, because t_TI from xterm may already
+    // have been used.
+    {(int)KS_CTE,	"\033[>4;m\033[=0;1u"},
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+#ifdef FEAT_TERMGUICOLORS
+/*
+ * Additions for using the RGB colors
+ */
+static tcap_entry_T builtin_rgb[] = {
+    // These are printf strings, not terminal codes.
+    {(int)KS_8F,	"\033[38;2;%lu;%lu;%lum"},
+    {(int)KS_8B,	"\033[48;2;%lu;%lu;%lum"},
+    {(int)KS_8U,	"\033[58;2;%lu;%lu;%lum"},
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+#endif
+
+/*
+ * iris-ansi for Silicon Graphics machines.
+ */
+static tcap_entry_T builtin_iris_ansi[] = {
+    {(int)KS_CE,	"\033[K"},
+    {(int)KS_CD,	"\033[J"},
+    {(int)KS_AL,	"\033[L"},
+#  ifdef TERMINFO
+    {(int)KS_CAL,	"\033[%p1%dL"},
+#  else
+    {(int)KS_CAL,	"\033[%dL"},
+#  endif
+    {(int)KS_DL,	"\033[M"},
+#  ifdef TERMINFO
+    {(int)KS_CDL,	"\033[%p1%dM"},
+#  else
+    {(int)KS_CDL,	"\033[%dM"},
+#  endif
+#if 0	// The scroll region is not working as Vim expects.
+#  ifdef TERMINFO
+    {(int)KS_CS,	"\033[%i%p1%d;%p2%dr"},
+#  else
+    {(int)KS_CS,	"\033[%i%d;%dr"},
+#  endif
+#endif
+    {(int)KS_CL,	"\033[H\033[2J"},
+    {(int)KS_VE,	"\033[9/y\033[12/y"},	// These aren't documented
+    {(int)KS_VS,	"\033[10/y\033[=1h\033[=2l"}, // These aren't documented
+    {(int)KS_TI,	"\033[=6h"},
+    {(int)KS_TE,	"\033[=6l"},
+    {(int)KS_SE,	"\033[21;27m"},
+    {(int)KS_SO,	"\033[1;7m"},
+    {(int)KS_ME,	"\033[m"},
+    {(int)KS_MR,	"\033[7m"},
+    {(int)KS_MD,	"\033[1m"},
+    {(int)KS_CCO,	"8"},			// allow 8 colors
+    {(int)KS_CZH,	"\033[3m"},		// italic mode on
+    {(int)KS_CZR,	"\033[23m"},		// italic mode off
+    {(int)KS_US,	"\033[4m"},		// underline on
+    {(int)KS_UE,	"\033[24m"},		// underline off
+#  ifdef TERMINFO
+    {(int)KS_CAB,	"\033[4%p1%dm"},    // set background color (ANSI)
+    {(int)KS_CAF,	"\033[3%p1%dm"},    // set foreground color (ANSI)
+    {(int)KS_CSB,	"\033[102;%p1%dm"}, // set screen background color
+    {(int)KS_CSF,	"\033[101;%p1%dm"}, // set screen foreground color
+#  else
+    {(int)KS_CAB,	"\033[4%dm"},	    // set background color (ANSI)
+    {(int)KS_CAF,	"\033[3%dm"},	    // set foreground color (ANSI)
+    {(int)KS_CSB,	"\033[102;%dm"},    // set screen background color
+    {(int)KS_CSF,	"\033[101;%dm"},    // set screen foreground color
+#  endif
+    {(int)KS_MS,	"y"},		// guessed
+    {(int)KS_UT,	"y"},		// guessed
+    {(int)KS_LE,	"\b"},
+#  ifdef TERMINFO
+    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
+#  else
+    {(int)KS_CM,	"\033[%i%d;%dH"},
+#  endif
+    {(int)KS_SR,	"\033M"},
+#  ifdef TERMINFO
+    {(int)KS_CRI,	"\033[%p1%dC"},
+#  else
+    {(int)KS_CRI,	"\033[%dC"},
+#  endif
+    {(int)KS_CIS,	"\033P3.y"},
+    {(int)KS_CIE,	"\234"},    // ST "String Terminator"
+    {(int)KS_TS,	"\033P1.y"},
+    {(int)KS_FS,	"\234"},    // ST "String Terminator"
+#  ifdef TERMINFO
+    {(int)KS_CWS,	"\033[203;%p1%d;%p2%d/y"},
+    {(int)KS_CWP,	"\033[205;%p1%d;%p2%d/y"},
+#  else
+    {(int)KS_CWS,	"\033[203;%d;%d/y"},
+    {(int)KS_CWP,	"\033[205;%d;%d/y"},
+#  endif
+    {K_UP,		"\033[A"},
+    {K_DOWN,		"\033[B"},
+    {K_LEFT,		"\033[D"},
+    {K_RIGHT,		"\033[C"},
+    {K_S_UP,		"\033[161q"},
+    {K_S_DOWN,		"\033[164q"},
+    {K_S_LEFT,		"\033[158q"},
+    {K_S_RIGHT,		"\033[167q"},
+    {K_F1,		"\033[001q"},
+    {K_F2,		"\033[002q"},
+    {K_F3,		"\033[003q"},
+    {K_F4,		"\033[004q"},
+    {K_F5,		"\033[005q"},
+    {K_F6,		"\033[006q"},
+    {K_F7,		"\033[007q"},
+    {K_F8,		"\033[008q"},
+    {K_F9,		"\033[009q"},
+    {K_F10,		"\033[010q"},
+    {K_F11,		"\033[011q"},
+    {K_F12,		"\033[012q"},
+    {K_S_F1,		"\033[013q"},
+    {K_S_F2,		"\033[014q"},
+    {K_S_F3,		"\033[015q"},
+    {K_S_F4,		"\033[016q"},
+    {K_S_F5,		"\033[017q"},
+    {K_S_F6,		"\033[018q"},
+    {K_S_F7,		"\033[019q"},
+    {K_S_F8,		"\033[020q"},
+    {K_S_F9,		"\033[021q"},
+    {K_S_F10,		"\033[022q"},
+    {K_S_F11,		"\033[023q"},
+    {K_S_F12,		"\033[024q"},
+    {K_INS,		"\033[139q"},
+    {K_HOME,		"\033[H"},
+    {K_END,		"\033[146q"},
+    {K_PAGEUP,		"\033[150q"},
+    {K_PAGEDOWN,	"\033[154q"},
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * These codes are valid when nansi.sys or equivalent has been installed.
+ * Function keys on a PC are preceded with a NUL. These are converted into
+ * K_NUL '\316' in mch_inchar(), because we cannot handle NULs in key codes.
+ * CTRL-arrow is used instead of SHIFT-arrow.
+ */
+static tcap_entry_T builtin_pcansi[] = {
+    {(int)KS_DL,	"\033[M"},
+    {(int)KS_AL,	"\033[L"},
+    {(int)KS_CE,	"\033[K"},
+    {(int)KS_CL,	"\033[2J"},
+    {(int)KS_ME,	"\033[0m"},
+    {(int)KS_MR,	"\033[5m"},	// reverse: black on lightgrey
+    {(int)KS_MD,	"\033[1m"},	// bold: white text
+    {(int)KS_SE,	"\033[0m"},	// standout end
+    {(int)KS_SO,	"\033[31m"},	// standout: white on blue
+    {(int)KS_CZH,	"\033[34;43m"},	// italic mode: blue text on yellow
+    {(int)KS_CZR,	"\033[0m"},	// italic mode end
+    {(int)KS_US,	"\033[36;41m"},	// underscore mode: cyan text on red
+    {(int)KS_UE,	"\033[0m"},	// underscore mode end
+    {(int)KS_CCO,	"8"},		// allow 8 colors
+#  ifdef TERMINFO
+    {(int)KS_CAB,	"\033[4%p1%dm"},// set background color
+    {(int)KS_CAF,	"\033[3%p1%dm"},// set foreground color
+#  else
+    {(int)KS_CAB,	"\033[4%dm"},	// set background color
+    {(int)KS_CAF,	"\033[3%dm"},	// set foreground color
+#  endif
+    {(int)KS_OP,	"\033[0m"},	// reset colors
+    {(int)KS_MS,	"y"},
+    {(int)KS_UT,	"y"},		// guessed
+    {(int)KS_LE,	"\b"},
+#  ifdef TERMINFO
+    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
+#  else
+    {(int)KS_CM,	"\033[%i%d;%dH"},
+#  endif
+#  ifdef TERMINFO
+    {(int)KS_CRI,	"\033[%p1%dC"},
+#  else
+    {(int)KS_CRI,	"\033[%dC"},
+#  endif
+    {K_UP,		"\316H"},
+    {K_DOWN,		"\316P"},
+    {K_LEFT,		"\316K"},
+    {K_RIGHT,		"\316M"},
+    {K_S_LEFT,		"\316s"},
+    {K_S_RIGHT,		"\316t"},
+    {K_F1,		"\316;"},
+    {K_F2,		"\316<"},
+    {K_F3,		"\316="},
+    {K_F4,		"\316>"},
+    {K_F5,		"\316?"},
+    {K_F6,		"\316@"},
+    {K_F7,		"\316A"},
+    {K_F8,		"\316B"},
+    {K_F9,		"\316C"},
+    {K_F10,		"\316D"},
+    {K_F11,		"\316\205"},	// guessed
+    {K_F12,		"\316\206"},	// guessed
+    {K_S_F1,		"\316T"},
+    {K_S_F2,		"\316U"},
+    {K_S_F3,		"\316V"},
+    {K_S_F4,		"\316W"},
+    {K_S_F5,		"\316X"},
+    {K_S_F6,		"\316Y"},
+    {K_S_F7,		"\316Z"},
+    {K_S_F8,		"\316["},
+    {K_S_F9,		"\316\\"},
+    {K_S_F10,		"\316]"},
+    {K_S_F11,		"\316\207"},	// guessed
+    {K_S_F12,		"\316\210"},	// guessed
+    {K_INS,		"\316R"},
+    {K_DEL,		"\316S"},
+    {K_HOME,		"\316G"},
+    {K_END,		"\316O"},
+    {K_PAGEDOWN,	"\316Q"},
+    {K_PAGEUP,		"\316I"},
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * These codes are valid for the Win32 Console.  The entries that start with
+ * ESC | are translated into console calls in os_win32.c.  The function keys
+ * are also translated in os_win32.c.
+ */
+static tcap_entry_T builtin_win32[] = {
+    {(int)KS_CE,	"\033|K"},	// clear to end of line
+    {(int)KS_AL,	"\033|L"},	// add new blank line
+#  ifdef TERMINFO
+    {(int)KS_CAL,	"\033|%p1%dL"},	// add number of new blank lines
+#  else
+    {(int)KS_CAL,	"\033|%dL"},	// add number of new blank lines
+#  endif
+    {(int)KS_DL,	"\033|M"},	// delete line
+#  ifdef TERMINFO
+    {(int)KS_CDL,	"\033|%p1%dM"},	// delete number of lines
+    {(int)KS_CSV,	"\033|%p1%d;%p2%dV"},
+#  else
+    {(int)KS_CDL,	"\033|%dM"},	// delete number of lines
+    {(int)KS_CSV,	"\033|%d;%dV"},
+#  endif
+    {(int)KS_CL,	"\033|J"},	// clear screen
+    {(int)KS_CD,	"\033|j"},	// clear to end of display
+    {(int)KS_VI,	"\033|v"},	// cursor invisible
+    {(int)KS_VE,	"\033|V"},	// cursor visible
+
+    {(int)KS_ME,	"\033|0m"},	// normal
+    {(int)KS_MR,	"\033|112m"},	// reverse: black on lightgray
+    {(int)KS_MD,	"\033|15m"},	// bold: white on black
+#if 1
+    {(int)KS_SO,	"\033|31m"},	// standout: white on blue
+    {(int)KS_SE,	"\033|0m"},	// standout end
+#else
+    {(int)KS_SO,	"\033|F"},	// standout: high intensity
+    {(int)KS_SE,	"\033|f"},	// standout end
+#endif
+    {(int)KS_CZH,	"\033|225m"},	// italic: blue text on yellow
+    {(int)KS_CZR,	"\033|0m"},	// italic end
+    {(int)KS_US,	"\033|67m"},	// underscore: cyan text on red
+    {(int)KS_UE,	"\033|0m"},	// underscore end
+    {(int)KS_CCO,	"16"},		// allow 16 colors
+#  ifdef TERMINFO
+    {(int)KS_CAB,	"\033|%p1%db"},	// set background color
+    {(int)KS_CAF,	"\033|%p1%df"},	// set foreground color
+#  else
+    {(int)KS_CAB,	"\033|%db"},	// set background color
+    {(int)KS_CAF,	"\033|%df"},	// set foreground color
+#  endif
+
+    {(int)KS_MS,	"y"},		// save to move cur in reverse mode
+    {(int)KS_UT,	"y"},
+    {(int)KS_XN,	"y"},
+    {(int)KS_LE,	"\b"},
+#  ifdef TERMINFO
+    {(int)KS_CM,	"\033|%i%p1%d;%p2%dH"}, // cursor motion
+#  else
+    {(int)KS_CM,	"\033|%i%d;%dH"}, // cursor motion
+#  endif
+    {(int)KS_VB,	"\033|B"},	// visual bell
+    {(int)KS_TI,	"\033|S"},	// put terminal in termcap mode
+    {(int)KS_TE,	"\033|E"},	// out of termcap mode
+#  ifdef TERMINFO
+    {(int)KS_CS,	"\033|%i%p1%d;%p2%dr"}, // scroll region
+#  else
+    {(int)KS_CS,	"\033|%i%d;%dr"}, // scroll region
+#  endif
+
+    {K_UP,		"\316H"},
+    {K_DOWN,		"\316P"},
+    {K_LEFT,		"\316K"},
+    {K_RIGHT,		"\316M"},
+    {K_S_UP,		"\316\304"},
+    {K_S_DOWN,		"\316\317"},
+    {K_S_LEFT,		"\316\311"},
+    {K_C_LEFT,		"\316s"},
+    {K_S_RIGHT,		"\316\313"},
+    {K_C_RIGHT,		"\316t"},
+    {K_S_TAB,		"\316\017"},
+    {K_F1,		"\316;"},
+    {K_F2,		"\316<"},
+    {K_F3,		"\316="},
+    {K_F4,		"\316>"},
+    {K_F5,		"\316?"},
+    {K_F6,		"\316@"},
+    {K_F7,		"\316A"},
+    {K_F8,		"\316B"},
+    {K_F9,		"\316C"},
+    {K_F10,		"\316D"},
+    {K_F11,		"\316\205"},
+    {K_F12,		"\316\206"},
+    {K_S_F1,		"\316T"},
+    {K_S_F2,		"\316U"},
+    {K_S_F3,		"\316V"},
+    {K_S_F4,		"\316W"},
+    {K_S_F5,		"\316X"},
+    {K_S_F6,		"\316Y"},
+    {K_S_F7,		"\316Z"},
+    {K_S_F8,		"\316["},
+    {K_S_F9,		"\316\\"},
+    {K_S_F10,		"\316]"},
+    {K_S_F11,		"\316\207"},
+    {K_S_F12,		"\316\210"},
+    {K_INS,		"\316R"},
+    {K_DEL,		"\316S"},
+    {K_HOME,		"\316G"},
+    {K_S_HOME,		"\316\302"},
+    {K_C_HOME,		"\316w"},
+    {K_END,		"\316O"},
+    {K_S_END,		"\316\315"},
+    {K_C_END,		"\316u"},
+    {K_PAGEDOWN,	"\316Q"},
+    {K_PAGEUP,		"\316I"},
+    {K_KPLUS,		"\316N"},
+    {K_KMINUS,		"\316J"},
+    {K_KMULTIPLY,	"\316\067"},
+    {K_K0,		"\316\332"},
+    {K_K1,		"\316\336"},
+    {K_K2,		"\316\342"},
+    {K_K3,		"\316\346"},
+    {K_K4,		"\316\352"},
+    {K_K5,		"\316\356"},
+    {K_K6,		"\316\362"},
+    {K_K7,		"\316\366"},
+    {K_K8,		"\316\372"},
+    {K_K9,		"\316\376"},
+    {K_BS,		"\316x"},
+    {K_S_BS,		"\316y"},
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+#if defined(FEAT_GUI)
+/*
+ * GUI uses made-up codes, only used inside Vim.
+ */
+static tcap_entry_T builtin_gui[] = {
+    {(int)KS_CE,	"\033|$"},
+    {(int)KS_AL,	"\033|i"},
+# ifdef TERMINFO
+    {(int)KS_CAL,	"\033|%p1%dI"},
+# else
+    {(int)KS_CAL,	"\033|%dI"},
+# endif
+    {(int)KS_DL,	"\033|d"},
+# ifdef TERMINFO
+    {(int)KS_CDL,	"\033|%p1%dD"},
+    {(int)KS_CS,	"\033|%p1%d;%p2%dR"},
+    {(int)KS_CSV,	"\033|%p1%d;%p2%dV"},
+# else
+    {(int)KS_CDL,	"\033|%dD"},
+    {(int)KS_CS,	"\033|%d;%dR"},
+    {(int)KS_CSV,	"\033|%d;%dV"},
+# endif
+    {(int)KS_CL,	"\033|C"},
+			// attributes switched on with 'h', off with * 'H'
+    {(int)KS_ME,	"\033|31H"}, // HL_ALL
+    {(int)KS_MR,	"\033|1h"},   // HL_INVERSE
+    {(int)KS_MD,	"\033|2h"},   // HL_BOLD
+    {(int)KS_SE,	"\033|16H"}, // HL_STANDOUT
+    {(int)KS_SO,	"\033|16h"}, // HL_STANDOUT
+    {(int)KS_UE,	"\033|8H"},   // HL_UNDERLINE
+    {(int)KS_US,	"\033|8h"},   // HL_UNDERLINE
+    {(int)KS_UCE,	"\033|8C"},   // HL_UNDERCURL
+    {(int)KS_UCS,	"\033|8c"},   // HL_UNDERCURL
+    {(int)KS_STE,	"\033|4C"},   // HL_STRIKETHROUGH
+    {(int)KS_STS,	"\033|4c"},   // HL_STRIKETHROUGH
+    {(int)KS_CZR,	"\033|4H"},   // HL_ITALIC
+    {(int)KS_CZH,	"\033|4h"},   // HL_ITALIC
+    {(int)KS_VB,	"\033|f"},
+    {(int)KS_MS,	"y"},
+    {(int)KS_UT,	"y"},
+    {(int)KS_XN,	"y"},
+    {(int)KS_LE,	"\b"},		// cursor-left = BS
+    {(int)KS_ND,	"\014"},	// cursor-right = CTRL-L
+# ifdef TERMINFO
+    {(int)KS_CM,	"\033|%p1%d;%p2%dM"},
+# else
+    {(int)KS_CM,	"\033|%d;%dM"},
+# endif
+	// there are no key sequences here, the GUI sequences are recognized
+	// in check_termcode()
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+#endif
+
+/*
+ * Amiga console window, default for Amiga.
+ */
+static tcap_entry_T builtin_amiga[] = {
+    {(int)KS_CE,	"\033[K"},
+    {(int)KS_CD,	"\033[J"},
+    {(int)KS_AL,	"\033[L"},
+#  ifdef TERMINFO
+    {(int)KS_CAL,	"\033[%p1%dL"},
+#  else
+    {(int)KS_CAL,	"\033[%dL"},
+#  endif
+    {(int)KS_DL,	"\033[M"},
+#  ifdef TERMINFO
+    {(int)KS_CDL,	"\033[%p1%dM"},
+#  else
+    {(int)KS_CDL,	"\033[%dM"},
+#  endif
+    {(int)KS_CL,	"\014"},
+    {(int)KS_VI,	"\033[0 p"},
+    {(int)KS_VE,	"\033[1 p"},
+    {(int)KS_ME,	"\033[0m"},
+    {(int)KS_MR,	"\033[7m"},
+    {(int)KS_MD,	"\033[1m"},
+    {(int)KS_SE,	"\033[0m"},
+    {(int)KS_SO,	"\033[33m"},
+    {(int)KS_US,	"\033[4m"},
+    {(int)KS_UE,	"\033[0m"},
+    {(int)KS_CZH,	"\033[3m"},
+    {(int)KS_CZR,	"\033[0m"},
+#if defined(__amigaos4__) || defined(__MORPHOS__) || defined(__AROS__)
+    {(int)KS_CCO,	"8"},		// allow 8 colors
+#  ifdef TERMINFO
+    {(int)KS_CAB,	"\033[4%p1%dm"},// set background color
+    {(int)KS_CAF,	"\033[3%p1%dm"},// set foreground color
+#  else
+    {(int)KS_CAB,	"\033[4%dm"},	// set background color
+    {(int)KS_CAF,	"\033[3%dm"},	// set foreground color
+#  endif
+    {(int)KS_OP,	"\033[m"},	// reset colors
+#endif
+    {(int)KS_MS,	"y"},
+    {(int)KS_UT,	"y"},		// guessed
+    {(int)KS_LE,	"\b"},
+#  ifdef TERMINFO
+    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
+#  else
+    {(int)KS_CM,	"\033[%i%d;%dH"},
+#  endif
+#if defined(__MORPHOS__)
+    {(int)KS_SR,	"\033M"},
+#endif
+#  ifdef TERMINFO
+    {(int)KS_CRI,	"\033[%p1%dC"},
+#  else
+    {(int)KS_CRI,	"\033[%dC"},
+#  endif
+    {K_UP,		"\233A"},
+    {K_DOWN,		"\233B"},
+    {K_LEFT,		"\233D"},
+    {K_RIGHT,		"\233C"},
+    {K_S_UP,		"\233T"},
+    {K_S_DOWN,		"\233S"},
+    {K_S_LEFT,		"\233 A"},
+    {K_S_RIGHT,		"\233 @"},
+    {K_S_TAB,		"\233Z"},
+    {K_F1,		"\233\060~"},// some compilers don't dig "\2330"
+    {K_F2,		"\233\061~"},
+    {K_F3,		"\233\062~"},
+    {K_F4,		"\233\063~"},
+    {K_F5,		"\233\064~"},
+    {K_F6,		"\233\065~"},
+    {K_F7,		"\233\066~"},
+    {K_F8,		"\233\067~"},
+    {K_F9,		"\233\070~"},
+    {K_F10,		"\233\071~"},
+    {K_S_F1,		"\233\061\060~"},
+    {K_S_F2,		"\233\061\061~"},
+    {K_S_F3,		"\233\061\062~"},
+    {K_S_F4,		"\233\061\063~"},
+    {K_S_F5,		"\233\061\064~"},
+    {K_S_F6,		"\233\061\065~"},
+    {K_S_F7,		"\233\061\066~"},
+    {K_S_F8,		"\233\061\067~"},
+    {K_S_F9,		"\233\061\070~"},
+    {K_S_F10,		"\233\061\071~"},
+    {K_HELP,		"\233?~"},
+    {K_INS,		"\233\064\060~"},	// 101 key keyboard
+    {K_PAGEUP,		"\233\064\061~"},	// 101 key keyboard
+    {K_PAGEDOWN,	"\233\064\062~"},	// 101 key keyboard
+    {K_HOME,		"\233\064\064~"},	// 101 key keyboard
+    {K_END,		"\233\064\065~"},	// 101 key keyboard
+
+    {BT_EXTRA_KEYS,	""},
+    {TERMCAP2KEY('#', '2'), "\233\065\064~"},	// shifted home key
+    {TERMCAP2KEY('#', '3'), "\233\065\060~"},	// shifted insert key
+    {TERMCAP2KEY('*', '7'), "\233\065\065~"},	// shifted end key
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * The most minimal terminal: only clear screen and cursor positioning.
+ */
+static tcap_entry_T builtin_dumb[] = {
+    {(int)KS_CL,	"\014"},
+#ifdef TERMINFO
+    {(int)KS_CM,	"\033[%i%p1%d;%p2%dH"},
+#else
+    {(int)KS_CM,	"\033[%i%d;%dH"},
+#endif
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * Terminal used for debugging.
+ */
+static tcap_entry_T builtin_debug[] = {
+    {(int)KS_CE,	"[CE]"},
+    {(int)KS_CD,	"[CD]"},
+    {(int)KS_AL,	"[AL]"},
+#  ifdef TERMINFO
+    {(int)KS_CAL,	"[CAL%p1%d]"},
+#  else
+    {(int)KS_CAL,	"[CAL%d]"},
+#  endif
+    {(int)KS_DL,	"[DL]"},
+#  ifdef TERMINFO
+    {(int)KS_CDL,	"[CDL%p1%d]"},
+#  else
+    {(int)KS_CDL,	"[CDL%d]"},
+#  endif
+#  ifdef TERMINFO
+    {(int)KS_CS,	"[%p1%dCS%p2%d]"},
+#  else
+    {(int)KS_CS,	"[%dCS%d]"},
+#  endif
+#  ifdef TERMINFO
+    {(int)KS_CSV,	"[%p1%dCSV%p2%d]"},
+#  else
+    {(int)KS_CSV,	"[%dCSV%d]"},
+#  endif
+#  ifdef TERMINFO
+    {(int)KS_CAB,	"[CAB%p1%d]"},
+    {(int)KS_CAF,	"[CAF%p1%d]"},
+    {(int)KS_CSB,	"[CSB%p1%d]"},
+    {(int)KS_CSF,	"[CSF%p1%d]"},
+#  else
+    {(int)KS_CAB,	"[CAB%d]"},
+    {(int)KS_CAF,	"[CAF%d]"},
+    {(int)KS_CSB,	"[CSB%d]"},
+    {(int)KS_CSF,	"[CSF%d]"},
+#  endif
+    {(int)KS_CAU,	"[CAU%d]"},
+    {(int)KS_OP,	"[OP]"},
+    {(int)KS_LE,	"[LE]"},
+    {(int)KS_CL,	"[CL]"},
+    {(int)KS_VI,	"[VI]"},
+    {(int)KS_VE,	"[VE]"},
+    {(int)KS_VS,	"[VS]"},
+    {(int)KS_ME,	"[ME]"},
+    {(int)KS_MR,	"[MR]"},
+    {(int)KS_MB,	"[MB]"},
+    {(int)KS_MD,	"[MD]"},
+    {(int)KS_SE,	"[SE]"},
+    {(int)KS_SO,	"[SO]"},
+    {(int)KS_UE,	"[UE]"},
+    {(int)KS_US,	"[US]"},
+    {(int)KS_UCE,	"[UCE]"},
+    {(int)KS_UCS,	"[UCS]"},
+    {(int)KS_USS,	"[USS]"},
+    {(int)KS_DS,	"[DS]"},
+    {(int)KS_CDS,	"[CDS]"},
+    {(int)KS_STE,	"[STE]"},
+    {(int)KS_STS,	"[STS]"},
+    {(int)KS_MS,	"[MS]"},
+    {(int)KS_UT,	"[UT]"},
+    {(int)KS_XN,	"[XN]"},
+#  ifdef TERMINFO
+    {(int)KS_CM,	"[%p1%dCM%p2%d]"},
+#  else
+    {(int)KS_CM,	"[%dCM%d]"},
+#  endif
+    {(int)KS_SR,	"[SR]"},
+#  ifdef TERMINFO
+    {(int)KS_CRI,	"[CRI%p1%d]"},
+#  else
+    {(int)KS_CRI,	"[CRI%d]"},
+#  endif
+    {(int)KS_VB,	"[VB]"},
+    {(int)KS_KS,	"[KS]"},
+    {(int)KS_KE,	"[KE]"},
+    {(int)KS_TI,	"[TI]"},
+    {(int)KS_TE,	"[TE]"},
+    {(int)KS_CIS,	"[CIS]"},
+    {(int)KS_CIE,	"[CIE]"},
+    {(int)KS_CSC,	"[CSC]"},
+    {(int)KS_CEC,	"[CEC]"},
+    {(int)KS_TS,	"[TS]"},
+    {(int)KS_FS,	"[FS]"},
+#  ifdef TERMINFO
+    {(int)KS_CWS,	"[%p1%dCWS%p2%d]"},
+    {(int)KS_CWP,	"[%p1%dCWP%p2%d]"},
+#  else
+    {(int)KS_CWS,	"[%dCWS%d]"},
+    {(int)KS_CWP,	"[%dCWP%d]"},
+#  endif
+    {(int)KS_CRV,	"[CRV]"},
+    {(int)KS_CXM,	"[CXM]"},
+    {(int)KS_U7,	"[U7]"},
+    {(int)KS_RFG,	"[RFG]"},
+    {(int)KS_RBG,	"[RBG]"},
+    {K_UP,		"[KU]"},
+    {K_DOWN,		"[KD]"},
+    {K_LEFT,		"[KL]"},
+    {K_RIGHT,		"[KR]"},
+    {K_XUP,		"[xKU]"},
+    {K_XDOWN,		"[xKD]"},
+    {K_XLEFT,		"[xKL]"},
+    {K_XRIGHT,		"[xKR]"},
+    {K_S_UP,		"[S-KU]"},
+    {K_S_DOWN,		"[S-KD]"},
+    {K_S_LEFT,		"[S-KL]"},
+    {K_C_LEFT,		"[C-KL]"},
+    {K_S_RIGHT,		"[S-KR]"},
+    {K_C_RIGHT,		"[C-KR]"},
+    {K_F1,		"[F1]"},
+    {K_XF1,		"[xF1]"},
+    {K_F2,		"[F2]"},
+    {K_XF2,		"[xF2]"},
+    {K_F3,		"[F3]"},
+    {K_XF3,		"[xF3]"},
+    {K_F4,		"[F4]"},
+    {K_XF4,		"[xF4]"},
+    {K_F5,		"[F5]"},
+    {K_F6,		"[F6]"},
+    {K_F7,		"[F7]"},
+    {K_F8,		"[F8]"},
+    {K_F9,		"[F9]"},
+    {K_F10,		"[F10]"},
+    {K_F11,		"[F11]"},
+    {K_F12,		"[F12]"},
+    {K_S_F1,		"[S-F1]"},
+    {K_S_XF1,		"[S-xF1]"},
+    {K_S_F2,		"[S-F2]"},
+    {K_S_XF2,		"[S-xF2]"},
+    {K_S_F3,		"[S-F3]"},
+    {K_S_XF3,		"[S-xF3]"},
+    {K_S_F4,		"[S-F4]"},
+    {K_S_XF4,		"[S-xF4]"},
+    {K_S_F5,		"[S-F5]"},
+    {K_S_F6,		"[S-F6]"},
+    {K_S_F7,		"[S-F7]"},
+    {K_S_F8,		"[S-F8]"},
+    {K_S_F9,		"[S-F9]"},
+    {K_S_F10,		"[S-F10]"},
+    {K_S_F11,		"[S-F11]"},
+    {K_S_F12,		"[S-F12]"},
+    {K_HELP,		"[HELP]"},
+    {K_UNDO,		"[UNDO]"},
+    {K_BS,		"[BS]"},
+    {K_INS,		"[INS]"},
+    {K_KINS,		"[KINS]"},
+    {K_DEL,		"[DEL]"},
+    {K_KDEL,		"[KDEL]"},
+    {K_HOME,		"[HOME]"},
+    {K_S_HOME,		"[C-HOME]"},
+    {K_C_HOME,		"[C-HOME]"},
+    {K_KHOME,		"[KHOME]"},
+    {K_XHOME,		"[XHOME]"},
+    {K_ZHOME,		"[ZHOME]"},
+    {K_END,		"[END]"},
+    {K_S_END,		"[C-END]"},
+    {K_C_END,		"[C-END]"},
+    {K_KEND,		"[KEND]"},
+    {K_XEND,		"[XEND]"},
+    {K_ZEND,		"[ZEND]"},
+    {K_PAGEUP,		"[PAGEUP]"},
+    {K_PAGEDOWN,	"[PAGEDOWN]"},
+    {K_KPAGEUP,		"[KPAGEUP]"},
+    {K_KPAGEDOWN,	"[KPAGEDOWN]"},
+    {K_MOUSE,		"[MOUSE]"},
+    {K_KPLUS,		"[KPLUS]"},
+    {K_KMINUS,		"[KMINUS]"},
+    {K_KDIVIDE,		"[KDIVIDE]"},
+    {K_KMULTIPLY,	"[KMULTIPLY]"},
+    {K_KENTER,		"[KENTER]"},
+    {K_KPOINT,		"[KPOINT]"},
+    {K_PS,		"[PASTE-START]"},
+    {K_PE,		"[PASTE-END]"},
+    {K_K0,		"[K0]"},
+    {K_K1,		"[K1]"},
+    {K_K2,		"[K2]"},
+    {K_K3,		"[K3]"},
+    {K_K4,		"[K4]"},
+    {K_K5,		"[K5]"},
+    {K_K6,		"[K6]"},
+    {K_K7,		"[K7]"},
+    {K_K8,		"[K8]"},
+    {K_K9,		"[K9]"},
+
+    {(int)KS_NAME,	NULL}  // end marker
+};
+
+/*
+ * List of builtin terminals.
+ */
+typedef struct {
+    char	    *bitc_name;	    // name, such as "xterm"
+    tcap_entry_T    *bitc_table;    // table with entries for bitc_name
+} builtin_tcap_T;
+
+builtin_tcap_T builtin_terminals[] = {
+    // Unix and Generic
+    {"ansi",	    builtin_ansi},
+    {"vt320",	    builtin_vt320},
+    {"vt52",	    builtin_vt52},
+    {"xterm",	    builtin_xterm},
+    {"iris-ansi",   builtin_iris_ansi},
+
+    // MS-Windows
+    {"pcansi",	    builtin_pcansi},
+    {"win32",	    builtin_win32},
+
+    // Other systems
+#if defined(FEAT_GUI)
+    {"gui",	    builtin_gui},
+#endif
+    {"amiga",	    builtin_amiga},
+    {"dumb",	    builtin_dumb},
+    {"debug",	    builtin_debug},
+
+    {NULL,	    NULL},  // end marker
+};
+
+#if defined(FEAT_TERMGUICOLORS) || defined(PROTO)
+    static guicolor_T
+termgui_mch_get_color(char_u *name)
+{
+    return gui_get_color_cmn(name);
+}
+
+    guicolor_T
+termgui_get_color(char_u *name)
+{
+    guicolor_T	t;
+
+    if (*name == NUL)
+	return INVALCOLOR;
+    t = termgui_mch_get_color(name);
+
+    if (t == INVALCOLOR)
+	semsg(_(e_cannot_allocate_color_str), name);
+    return t;
+}
+
+    guicolor_T
+termgui_mch_get_rgb(guicolor_T color)
+{
+    return color;
+}
+#endif
+
+/*
+ * DEFAULT_TERM is used, when no terminal is specified with -T option or $TERM.
+ */
+#ifdef AMIGA
+# define DEFAULT_TERM	(char_u *)"amiga"
+#endif
+
+#ifdef MSWIN
+# define DEFAULT_TERM	(char_u *)"win32"
+#endif
+
+#if defined(UNIX)
+# define DEFAULT_TERM	(char_u *)"ansi"
+#endif
+
+#ifdef VMS
+# define DEFAULT_TERM	(char_u *)"vt320"
+#endif
+
+#ifdef __HAIKU__
+# undef DEFAULT_TERM
+# define DEFAULT_TERM	(char_u *)"xterm"
+#endif
+
+#ifndef DEFAULT_TERM
+# define DEFAULT_TERM	(char_u *)"dumb"
+#endif
+
+/*
+ * Term_strings contains currently used terminal output strings.
+ * It is initialized with the default values by parse_builtin_tcap().
+ * The values can be changed by setting the option with the same name.
+ */
+char_u *(term_strings[(int)KS_LAST + 1]);
+
+static int	need_gather = FALSE;	    // need to fill termleader[]
+static char_u	termleader[256 + 1];	    // for check_termcode()
+#ifdef FEAT_TERMRESPONSE
+static int	check_for_codes = FALSE;    // check for key code response
+#endif
+
+/*
+ * Structure and table to store terminal features that can be detected by
+ * querying the terminal.  Either by inspecting the termresponse or a more
+ * specific request.  Besides this there are:
+ * t_colors - number of colors supported
+ */
+typedef struct {
+    char    *tpr_name;
+    int	    tpr_set_by_termresponse;
+    int	    tpr_status;
+} termprop_T;
+
+// Values for tpr_status.
+#define TPR_UNKNOWN	    'u'
+#define TPR_YES		    'y'
+#define TPR_NO		    'n'
+#define TPR_MOUSE_XTERM     'x'	// use "xterm" for 'ttymouse'
+#define TPR_MOUSE_XTERM2    '2'	// use "xterm2" for 'ttymouse'
+#define TPR_MOUSE_SGR	    's'	// use "sgr" for 'ttymouse'
+
+// can request the cursor style without messing up the display
+#define TPR_CURSOR_STYLE	    0
+// can request the cursor blink mode without messing up the display
+#define TPR_CURSOR_BLINK	    1
+// can set the underline color with t_8u without resetting other colors
+#define TPR_UNDERLINE_RGB	    2
+// mouse support - TPR_MOUSE_XTERM, TPR_MOUSE_XTERM2 or TPR_MOUSE_SGR
+#define TPR_MOUSE		    3
+// term response indicates kitty
+#define TPR_KITTY		    4
+// table size
+#define TPR_COUNT		    5
+
+static termprop_T term_props[TPR_COUNT];
+
+/*
+ * Initialize the term_props table.
+ * When "all" is FALSE only set those that are detected from the version
+ * response.
+ */
+    void
+init_term_props(int all)
+{
+    int i;
+
+    term_props[TPR_CURSOR_STYLE].tpr_name = "cursor_style";
+    term_props[TPR_CURSOR_STYLE].tpr_set_by_termresponse = FALSE;
+    term_props[TPR_CURSOR_BLINK].tpr_name = "cursor_blink_mode";
+    term_props[TPR_CURSOR_BLINK].tpr_set_by_termresponse = FALSE;
+    term_props[TPR_UNDERLINE_RGB].tpr_name = "underline_rgb";
+    term_props[TPR_UNDERLINE_RGB].tpr_set_by_termresponse = TRUE;
+    term_props[TPR_MOUSE].tpr_name = "mouse";
+    term_props[TPR_MOUSE].tpr_set_by_termresponse = TRUE;
+    term_props[TPR_KITTY].tpr_name = "kitty";
+    term_props[TPR_KITTY].tpr_set_by_termresponse = FALSE;
+
+    for (i = 0; i < TPR_COUNT; ++i)
+	if (all || term_props[i].tpr_set_by_termresponse)
+	    term_props[i].tpr_status = TPR_UNKNOWN;
+}
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+    void
+f_terminalprops(typval_T *argvars UNUSED, typval_T *rettv)
+{
+# ifdef FEAT_TERMRESPONSE
+    int i;
+# endif
+
+    if (rettv_dict_alloc(rettv) == FAIL)
+	return;
+# ifdef FEAT_TERMRESPONSE
+    for (i = 0; i < TPR_COUNT; ++i)
+    {
+	char_u	value[2];
+
+	value[0] = term_props[i].tpr_status;
+	value[1] = NUL;
+	dict_add_string(rettv->vval.v_dict, term_props[i].tpr_name, value);
+    }
+# endif
+}
+#endif
+
+/*
+ * Find the builtin termcap entries for "term".
+ * This also recognizes similar names.  E.g. "xterm-256color" finds the "xterm"
+ * entry.
+ * Returns NULL when "term" is not found.
+ */
+    static tcap_entry_T *
+find_builtin_term(char_u *term)
+{
+    for (int i = 0; ; ++i)
+    {
+	char_u *name = (char_u *)builtin_terminals[i].bitc_name;
+	if (name == NULL)  // end marker
+	    break;
+#ifdef UNIX
+	if (STRCMP(name, "iris-ansi") == 0 && vim_is_iris(term))
+	    return builtin_terminals[i].bitc_table;
+	if (STRCMP(name, "xterm") == 0 && vim_is_xterm(term))
+	    return builtin_terminals[i].bitc_table;
+#endif
+#ifdef VMS
+	if (STRCMP(name, "vt320") == 0 && vim_is_vt300(term))
+	    return builtin_terminals[i].bitc_table;
+#endif
+	if (STRCMP(term, name) == 0)
+	    return builtin_terminals[i].bitc_table;
+    }
+    return NULL;
+}
+
+/*
+ * Apply entries from a builtin termcap.
+ */
+    static void
+apply_builtin_tcap(char_u *term, tcap_entry_T *entries, int overwrite)
+{
+    int term_8bit = term_is_8bit(term);
+
+    for (tcap_entry_T *p = entries;
+	      p->bt_entry != (int)KS_NAME && p->bt_entry != BT_EXTRA_KEYS; ++p)
+    {
+	if ((int)p->bt_entry >= 0)	// KS_xx entry
+	{
+	    // Only set the value if it wasn't set yet or "overwrite" is TRUE.
+	    if (term_strings[p->bt_entry] == NULL
+		    || term_strings[p->bt_entry] == empty_option
+		    || overwrite)
+	    {
+#ifdef FEAT_EVAL
+		int opt_idx = -1;
+#endif
+		// 8bit terminal: use CSI instead of <Esc>[
+		if (term_8bit && term_7to8bit((char_u *)p->bt_string) != 0)
+		{
+		    char_u  *s, *t;
+
+		    s = vim_strsave((char_u *)p->bt_string);
+		    if (s != NULL)
+		    {
+			for (t = s; *t; ++t)
+			    if (term_7to8bit(t))
+			    {
+				*t = term_7to8bit(t);
+				STRMOVE(t + 1, t + 2);
+			    }
+			term_strings[p->bt_entry] = s;
+#ifdef FEAT_EVAL
+			opt_idx =
+#endif
+				  set_term_option_alloced(
+						   &term_strings[p->bt_entry]);
+		    }
+		}
+		else
+		{
+		    term_strings[p->bt_entry] = (char_u *)p->bt_string;
+#ifdef FEAT_EVAL
+		    opt_idx = get_term_opt_idx(&term_strings[p->bt_entry]);
+#endif
+		}
+#ifdef FEAT_EVAL
+		set_term_option_sctx_idx(NULL, opt_idx);
+#endif
+	    }
+	}
+	else
+	{
+	    char_u  name[2];
+	    name[0] = KEY2TERMCAP0((int)p->bt_entry);
+	    name[1] = KEY2TERMCAP1((int)p->bt_entry);
+	    if (find_termcode(name) == NULL || overwrite)
+		add_termcode(name, (char_u *)p->bt_string, term_8bit);
+	}
+    }
+}
+
+/*
+ * Parsing of the builtin termcap entries.
+ * Caller should check if "term" is a valid builtin terminal name.
+ * The terminal's name is not set, as this is already done in termcapinit().
+ */
+    static void
+parse_builtin_tcap(char_u *term)
+{
+    tcap_entry_T *entries = find_builtin_term(term);
+    if (entries != NULL)
+	apply_builtin_tcap(term, entries, FALSE);
+}
+
+/*
+ * Set number of colors.
+ * Store it as a number in t_colors.
+ * Store it as a string in T_CCO (using nr_colors[]).
+ */
+    void
+set_color_count(int nr)
+{
+    char_u	nr_colors[20];		// string for number of colors
+
+    t_colors = nr;
+    if (t_colors > 1)
+	sprintf((char *)nr_colors, "%d", t_colors);
+    else
+	*nr_colors = NUL;
+    set_string_option_direct((char_u *)"t_Co", -1, nr_colors, OPT_FREE, 0);
+}
+
+/*
+ * Set the color count to "val" and redraw if it changed.
+ */
+    static void
+may_adjust_color_count(int val)
+{
+    if (val == t_colors)
+	return;
+
+    // Nr of colors changed, initialize highlighting and redraw everything.
+    // This causes a redraw, which usually clears the message.  Try keeping
+    // the message if it might work.
+    set_keep_msg_from_hist();
+    set_color_count(val);
+    init_highlight(TRUE, FALSE);
+#ifdef DEBUG_TERMRESPONSE
+    {
+	int r = redraw_asap(UPD_CLEAR);
+
+	log_tr("Received t_Co, redraw_asap(): %d", r);
+    }
+#else
+    redraw_asap(UPD_CLEAR);
+#endif
+}
+
+#ifdef HAVE_TGETENT
+static char *(key_names[]) =
+{
+# ifdef FEAT_TERMRESPONSE
+    // Do this one first, it may cause a screen redraw.
+    "Co",
+# endif
+    "ku", "kd", "kr", "kl",
+    "#2", "#4", "%i", "*7",
+    "k1", "k2", "k3", "k4", "k5", "k6",
+    "k7", "k8", "k9", "k;", "F1", "F2",
+    "%1", "&8", "kb", "kI", "kD", "kh",
+    "@7", "kP", "kN", "K1", "K3", "K4", "K5", "kB",
+    "PS", "PE",
+    NULL
+};
+#endif
+
+#if defined(HAVE_TGETENT) || defined(FEAT_TERMGUICOLORS)
+/*
+ * Return TRUE if "term_strings[idx]" was not set.
+ */
+    static int
+term_strings_not_set(enum SpecialKey idx)
+{
+    return TERM_STR(idx) == NULL || TERM_STR(idx) == empty_option;
+}
+#endif
+
+#ifdef HAVE_TGETENT
+/*
+ * Get the termcap entries we need with tgetstr(), tgetflag() and tgetnum().
+ * "invoke_tgetent()" must have been called before.
+ * If "*height" or "*width" are not zero then use the "li" and "col" entries to
+ * get their value.
+ */
+    static void
+get_term_entries(int *height, int *width)
+{
+    static struct {
+		    enum SpecialKey dest; // index in term_strings[]
+		    char *name;		  // termcap name for string
+		  } string_names[] =
+		    {	{KS_CE, "ce"}, {KS_AL, "al"}, {KS_CAL,"AL"},
+			{KS_DL, "dl"}, {KS_CDL,"DL"}, {KS_CS, "cs"},
+			{KS_CL, "cl"}, {KS_CD, "cd"},
+			{KS_VI, "vi"}, {KS_VE, "ve"}, {KS_MB, "mb"},
+			{KS_ME, "me"}, {KS_MR, "mr"},
+			{KS_MD, "md"}, {KS_SE, "se"}, {KS_SO, "so"},
+			{KS_CZH,"ZH"}, {KS_CZR,"ZR"}, {KS_UE, "ue"},
+			{KS_US, "us"}, {KS_UCE, "Ce"}, {KS_UCS, "Cs"},
+			{KS_USS, "Us"}, {KS_DS, "ds"}, {KS_CDS, "Ds"},
+			{KS_STE,"Te"}, {KS_STS,"Ts"},
+			{KS_CM, "cm"}, {KS_SR, "sr"},
+			{KS_CRI,"RI"}, {KS_VB, "vb"}, {KS_KS, "ks"},
+			{KS_KE, "ke"}, {KS_TI, "ti"}, {KS_TE, "te"},
+			{KS_CTI, "TI"}, {KS_CRK, "RK"}, {KS_CTE, "TE"},
+			{KS_BC, "bc"}, {KS_CSB,"Sb"}, {KS_CSF,"Sf"},
+			{KS_CAB,"AB"}, {KS_CAF,"AF"}, {KS_CAU,"AU"},
+			{KS_LE, "le"},
+			{KS_ND, "nd"}, {KS_OP, "op"},
+			{KS_CRV, "RV"}, {KS_CXM, "XM"},
+			{KS_VS, "vs"}, {KS_CVS, "VS"},
+			{KS_CIS, "IS"}, {KS_CIE, "IE"},
+			{KS_CSC, "SC"}, {KS_CEC, "EC"},
+			{KS_TS, "ts"}, {KS_FS, "fs"},
+			{KS_CWP, "WP"}, {KS_CWS, "WS"},
+			{KS_CSI, "SI"}, {KS_CEI, "EI"},
+			{KS_U7, "u7"}, {KS_RFG, "RF"}, {KS_RBG, "RB"},
+			{KS_8F, "8f"}, {KS_8B, "8b"}, {KS_8U, "8u"},
+			{KS_CBE, "BE"}, {KS_CBD, "BD"},
+			{KS_CST, "ST"}, {KS_CRT, "RT"},
+			{KS_SSI, "Si"}, {KS_SRI, "Ri"},
+			{(enum SpecialKey)0, NULL}
+		    };
+    int		    i;
+    static char_u   tstrbuf[TBUFSZ];
+    char_u	    *tp = tstrbuf;
+
+    /*
+     * get output strings
+     */
+    for (i = 0; string_names[i].name != NULL; ++i)
+    {
+	if (term_strings_not_set(string_names[i].dest))
+	{
+	    TERM_STR(string_names[i].dest) = TGETSTR(string_names[i].name, &tp);
+#ifdef FEAT_EVAL
+	    set_term_option_sctx_idx(string_names[i].name, -1);
+#endif
+	}
+    }
+
+    // tgetflag() returns 1 if the flag is present, 0 if not and
+    // possibly -1 if the flag doesn't exist.
+    if ((T_MS == NULL || T_MS == empty_option) && tgetflag("ms") > 0)
+	T_MS = (char_u *)"y";
+    if ((T_XS == NULL || T_XS == empty_option) && tgetflag("xs") > 0)
+	T_XS = (char_u *)"y";
+    if ((T_XN == NULL || T_XN == empty_option) && tgetflag("xn") > 0)
+	T_XN = (char_u *)"y";
+    if ((T_DB == NULL || T_DB == empty_option) && tgetflag("db") > 0)
+	T_DB = (char_u *)"y";
+    if ((T_DA == NULL || T_DA == empty_option) && tgetflag("da") > 0)
+	T_DA = (char_u *)"y";
+    if ((T_UT == NULL || T_UT == empty_option) && tgetflag("ut") > 0)
+	T_UT = (char_u *)"y";
+
+    /*
+     * get key codes
+     */
+    for (i = 0; key_names[i] != NULL; ++i)
+	if (find_termcode((char_u *)key_names[i]) == NULL)
+	{
+	    char_u *p = TGETSTR(key_names[i], &tp);
+
+	    // if cursor-left == backspace, ignore it (televideo 925)
+	    if (p != NULL
+		    && (*p != Ctrl_H
+			|| key_names[i][0] != 'k'
+			|| key_names[i][1] != 'l'))
+		add_termcode((char_u *)key_names[i], p, FALSE);
+	}
+
+    if (*height == 0)
+	*height = tgetnum("li");
+    if (*width == 0)
+	*width = tgetnum("co");
+
+    /*
+     * Get number of colors (if not done already).
+     */
+    if (term_strings_not_set(KS_CCO))
+    {
+	set_color_count(tgetnum("Co"));
+#ifdef FEAT_EVAL
+	set_term_option_sctx_idx("Co", -1);
+#endif
+    }
+
+# ifndef hpux
+    BC = (char *)TGETSTR("bc", &tp);
+    UP = (char *)TGETSTR("up", &tp);
+    char_u *p = TGETSTR("pc", &tp);
+    if (p != NULL)
+	PC = *p;
+# endif
+}
+#endif
+
+/*
+ * Report "term" is not found and list the ones we do know about.
+ */
+    static void
+report_term_error(char *error_msg, char_u *term)
+{
+    mch_errmsg("\r\n");
+    if (error_msg != NULL)
+    {
+	mch_errmsg(error_msg);
+	mch_errmsg("\r\n");
+    }
+    mch_errmsg("'");
+    mch_errmsg((char *)term);
+    mch_errmsg(_("' not known. Available builtin terminals are:"));
+    mch_errmsg("\r\n");
+
+    for (int i = 0; ; ++i)
+    {
+	char *name = builtin_terminals[i].bitc_name;
+	if (name == NULL)  // end marker
+	    break;
+	// Do not mention the "gui" entry, the user won't need to type it.
+	if (STRCMP(name, "gui") != 0)
+	{
+#ifdef HAVE_TGETENT
+	    mch_errmsg("    builtin_");
+#else
+	    mch_errmsg("    ");
+#endif
+	    mch_errmsg(name);
+	    mch_errmsg("\r\n");
+	}
+    }
+    // Output extra 'cmdheight' line breaks to avoid that the following error
+    // message overwrites the last terminal name.
+    for (int i = 1; i < p_ch; ++i)
+	mch_errmsg("\r\n");
+}
+
+    static void
+report_default_term(char_u *term)
+{
+    mch_errmsg(_("defaulting to '"));
+    mch_errmsg((char *)term);
+    mch_errmsg("'\r\n");
+    if (emsg_silent == 0 && !in_assert_fails)
+    {
+	screen_start();	// don't know where cursor is now
+	out_flush();
+	if (!is_not_a_term())
+	    ui_delay(2007L, TRUE);
+    }
+}
+
+/*
+ * Parse the 'keyprotocol' option, match against "term" and return the protocol
+ * for the first matching entry.
+ * When "term" is NULL then compile all patterns to check for any errors.
+ * Returns KEYPROTOCOL_FAIL if a pattern cannot be compiled.
+ * Returns KEYPROTOCOL_NONE if there is no match.
+ */
+    keyprot_T
+match_keyprotocol(char_u *term)
+{
+    int		len = (int)STRLEN(p_kpc) + 1;
+    char_u	*buf = alloc(len);
+    if (buf == NULL)
+	return KEYPROTOCOL_FAIL;
+
+    keyprot_T	ret = KEYPROTOCOL_FAIL;
+    char_u	*p = p_kpc;
+    while (*p != NUL)
+    {
+	// Isolate one comma separated item.
+	(void)copy_option_part(&p, buf, len, ",");
+	char_u *colon = vim_strchr(buf, ':');
+	if (colon == NULL || colon == buf || colon[1] == NUL)
+	    goto theend;
+	*colon = NUL;
+
+	keyprot_T prot;
+	if (STRCMP(colon + 1, "none") == 0)
+	    prot = KEYPROTOCOL_NONE;
+	else if (STRCMP(colon + 1, "mok2") == 0)
+	    prot = KEYPROTOCOL_MOK2;
+	else if (STRCMP(colon + 1, "kitty") == 0)
+	    prot = KEYPROTOCOL_KITTY;
+	else
+	    goto theend;
+
+	regmatch_T regmatch;
+	CLEAR_FIELD(regmatch);
+	regmatch.rm_ic = TRUE;
+	regmatch.regprog = vim_regcomp(buf, RE_MAGIC);
+	if (regmatch.regprog == NULL)
+	    goto theend;
+
+	int match = term != NULL && vim_regexec(&regmatch, term, (colnr_T)0);
+	vim_regfree(regmatch.regprog);
+	if (match)
+	{
+	    ret = prot;
+	    goto theend;
+	}
+
+    }
+
+    // No match found, use "none".
+    ret = KEYPROTOCOL_NONE;
+
+theend:
+    vim_free(buf);
+    return ret;
+}
+
+/*
+ * Set terminal options for terminal "term".
+ * Return OK if terminal 'term' was found in a termcap, FAIL otherwise.
+ *
+ * While doing this, until ttest(), some options may be NULL, be careful.
+ */
+    int
+set_termname(char_u *term)
+{
+#ifdef HAVE_TGETENT
+    int		builtin_first = p_tbi;
+    int		try;
+    int		termcap_cleared = FALSE;
+#endif
+    int		width = 0, height = 0;
+    char	*error_msg = NULL;
+    char_u	*bs_p, *del_p;
+
+    // In silect mode (ex -s) we don't use the 'term' option.
+    if (silent_mode)
+	return OK;
+
+    detected_8bit = FALSE;		// reset 8-bit detection
+
+    if (term_is_builtin(term))
+    {
+	term += 8;
+#ifdef HAVE_TGETENT
+	builtin_first = 1;
+#endif
+    }
+
+/*
+ * If HAVE_TGETENT is not defined, only the builtin termcap is used, otherwise:
+ *   If builtin_first is TRUE:
+ *     0. try builtin termcap
+ *     1. try external termcap
+ *     2. if both fail default to a builtin terminal
+ *   If builtin_first is FALSE:
+ *     1. try external termcap
+ *     2. try builtin termcap, if both fail default to a builtin terminal
+ */
+#ifdef HAVE_TGETENT
+    for (try = builtin_first ? 0 : 1; try < 3; ++try)
+    {
+	/*
+	 * Use external termcap
+	 */
+	if (try == 1)
+	{
+	    char_u	    tbuf[TBUFSZ];
+
+	    /*
+	     * If the external termcap does not have a matching entry, try the
+	     * builtin ones.
+	     */
+	    if ((error_msg = invoke_tgetent(tbuf, term)) == NULL)
+	    {
+		if (!termcap_cleared)
+		{
+		    clear_termoptions();	// clear old options
+		    termcap_cleared = TRUE;
+		}
+
+		get_term_entries(&height, &width);
+	    }
+	}
+	else	    // try == 0 || try == 2
+#endif // HAVE_TGETENT
+	/*
+	 * Use builtin termcap
+	 */
+	{
+#ifdef HAVE_TGETENT
+	    /*
+	     * If builtin termcap was already used, there is no need to search
+	     * for the builtin termcap again, quit now.
+	     */
+	    if (try == 2 && builtin_first && termcap_cleared)
+		break;
+#endif
+	    /*
+	     * Search for 'term' in builtin_terminals[].
+	     */
+	    tcap_entry_T *termp = find_builtin_term(term);
+	    if (termp == NULL)	// did not find it
+	    {
+#ifdef HAVE_TGETENT
+		/*
+		 * If try == 0, first try the external termcap. If that is not
+		 * found we'll get back here with try == 2.
+		 * If termcap_cleared is set we used the external termcap,
+		 * don't complain about not finding the term in the builtin
+		 * termcap.
+		 */
+		if (try == 0)			// try external one
+		    continue;
+		if (termcap_cleared)		// found in external termcap
+		    break;
+#endif
+		report_term_error(error_msg, term);
+
+		// when user typed :set term=xxx, quit here
+		if (starting != NO_SCREEN)
+		{
+		    screen_start();	// don't know where cursor is now
+		    wait_return(TRUE);
+		    return FAIL;
+		}
+		term = DEFAULT_TERM;
+		report_default_term(term);
+		set_string_option_direct((char_u *)"term", -1, term,
+								 OPT_FREE, 0);
+		display_errors();
+	    }
+	    out_flush();
+#ifdef HAVE_TGETENT
+	    if (!termcap_cleared)
+	    {
+#endif
+		clear_termoptions();	    // clear old options
+#ifdef HAVE_TGETENT
+		termcap_cleared = TRUE;
+	    }
+#endif
+	    parse_builtin_tcap(term);
+
+#ifdef FEAT_GUI
+	    if (term_is_gui(term))
+	    {
+		out_flush();
+		gui_init();
+		// If starting the GUI failed, don't do any of the other
+		// things for this terminal
+		if (!gui.in_use)
+		    return FAIL;
+# ifdef HAVE_TGETENT
+		break;		// don't try using external termcap
+# endif
+	    }
+#endif // FEAT_GUI
+	}
+#ifdef HAVE_TGETENT
+    }
+#endif
+
+#ifdef FEAT_GUI
+    if (!gui.in_use)
+#endif
+    {
+	// Use the 'keyprotocol' option to adjust the t_TE and t_TI
+	// termcap entries if there is an entry matching "term".
+	keyprot_T kpc = match_keyprotocol(term);
+	if (kpc == KEYPROTOCOL_KITTY)
+	    apply_builtin_tcap(term, builtin_kitty, TRUE);
+	else if (kpc == KEYPROTOCOL_MOK2)
+	    apply_builtin_tcap(term, builtin_mok2, TRUE);
+
+#ifdef FEAT_TERMGUICOLORS
+	// There is no good way to detect that the terminal supports RGB
+	// colors.  Since these termcap entries are non-standard anyway and
+	// only used when the user sets 'termguicolors' we might as well add
+	// them.  But not when one of them was already set.
+	if (term_strings_not_set(KS_8F)
+		&& term_strings_not_set(KS_8B)
+		&& term_strings_not_set(KS_8U))
+	    apply_builtin_tcap(term, builtin_rgb, TRUE);
+#endif
+
+	if (kpc != KEYPROTOCOL_NONE)
+	    // Some function keys may accept modifiers even though the
+	    // terminfo/termcap entry does not indicate this.
+	    accept_modifiers_for_function_keys();
+    }
+
+/*
+ * special: There is no info in the termcap about whether the cursor
+ * positioning is relative to the start of the screen or to the start of the
+ * scrolling region.  We just guess here. Only msdos pcterm is known to do it
+ * relative.
+ */
+    if (STRCMP(term, "pcterm") == 0)
+	T_CCS = (char_u *)"yes";
+    else
+	T_CCS = empty_option;
+
+    // Special case: "kitty" may not have a "RV" entry in terminfo, but we need
+    // to request the version for several other things to work.
+    if (strstr((char *)term, "kitty") != NULL
+					   && (T_CRV == NULL || *T_CRV == NUL))
+	T_CRV = (char_u *)"\033[>c";
+
+#ifdef UNIX
+/*
+ * Any "stty" settings override the default for t_kb from the termcap.
+ * This is in os_unix.c, because it depends a lot on the version of unix that
+ * is being used.
+ * Don't do this when the GUI is active, it uses "t_kb" and "t_kD" directly.
+ */
+# ifdef FEAT_GUI
+    if (!gui.in_use)
+# endif
+	get_stty();
+#endif
+
+/*
+ * If the termcap has no entry for 'bs' and/or 'del' and the ioctl() also
+ * didn't work, use the default CTRL-H
+ * The default for t_kD is DEL, unless t_kb is DEL.
+ * The vim_strsave'd strings are probably lost forever, well it's only two
+ * bytes.  Don't do this when the GUI is active, it uses "t_kb" and "t_kD"
+ * directly.
+ */
+#ifdef FEAT_GUI
+    if (!gui.in_use)
+#endif
+    {
+	bs_p = find_termcode((char_u *)"kb");
+	del_p = find_termcode((char_u *)"kD");
+	if (bs_p == NULL || *bs_p == NUL)
+	    add_termcode((char_u *)"kb", (bs_p = (char_u *)CTRL_H_STR), FALSE);
+	if ((del_p == NULL || *del_p == NUL) &&
+					    (bs_p == NULL || *bs_p != DEL))
+	    add_termcode((char_u *)"kD", (char_u *)DEL_STR, FALSE);
+    }
+
+#if defined(UNIX) || defined(VMS)
+    term_is_xterm = vim_is_xterm(term);
+#endif
+#ifdef FEAT_TERMRESPONSE
+    // Reset terminal properties that are set based on the termresponse, which
+    // will be sent out soon.
+    init_term_props(FALSE);
+#endif
+
+#if defined(UNIX) || defined(VMS)
+    // If the first number in t_XM is 1006 then the terminal will support SGR
+    // mouse reporting.
+    int did_set_ttym = FALSE;
+    if (T_CXM != NULL && *T_CXM != NUL && !option_was_set((char_u *)"ttym"))
+    {
+	char_u *p = T_CXM;
+
+	while (*p != NUL && !VIM_ISDIGIT(*p))
+	    ++p;
+	if (getdigits(&p) == 1006)
+	{
+	    did_set_ttym = TRUE;
+	    set_option_value_give_err((char_u *)"ttym", 0L, (char_u *)"sgr", 0);
+	}
+    }
+
+    /*
+     * For Unix, set the 'ttymouse' option to the type of mouse to be used.
+     * The termcode for the mouse is added as a side effect in option.c.
+     */
+    {
+	char_u	*p = (char_u *)"";
+
+# ifdef FEAT_MOUSE_XTERM
+	if (use_xterm_like_mouse(term))
+	{
+	    if (use_xterm_mouse())
+		p = NULL;	// keep existing value, might be "xterm2"
+	    else
+		p = (char_u *)"xterm";
+	}
+# endif
+	if (p != NULL && !did_set_ttym)
+	{
+	    set_option_value_give_err((char_u *)"ttym", 0L, p, 0);
+	    // Reset the WAS_SET flag, 'ttymouse' can be set to "sgr" or
+	    // "xterm2" in check_termcode().
+	    reset_option_was_set((char_u *)"ttym");
+	}
+	if (p == NULL
+#  ifdef FEAT_GUI
+		|| gui.in_use
+#  endif
+		)
+	    check_mouse_termcode();	// set mouse termcode anyway
+    }
+#else
+    set_mouse_termcode(KS_MOUSE, (char_u *)"\233M");
+#endif
+
+#ifdef FEAT_MOUSE_XTERM
+    // Focus reporting is supported by xterm compatible terminals and tmux.
+    // We hard-code the received escape sequences here.  There are the terminfo
+    // entries kxIN and kxOUT, but they are rarely used and do hot have a
+    // two-letter termcap name.
+    // This used to be done only for xterm-like terminals, but some others also
+    // may produce these codes.  Always recognize them, as the chance of them
+    // being used for something else is very small.
+    {
+	char_u name[3];
+
+	// handle focus in event
+	name[0] = KS_EXTRA;
+	name[1] = KE_FOCUSGAINED;
+	name[2] = NUL;
+	add_termcode(name, (char_u *)"\033[I", FALSE);
+
+	// handle focus out event
+	name[1] = KE_FOCUSLOST;
+	add_termcode(name, (char_u *)"\033[O", FALSE);
+
+	need_gather = TRUE;
+    }
+#endif
+#if (defined(UNIX) || defined(VMS))
+    // First time after setting 'term' a focus event is always reported.
+    focus_state = MAYBE;
+#endif
+
+#ifdef USE_TERM_CONSOLE
+    // DEFAULT_TERM indicates that it is the machine console.
+    if (STRCMP(term, DEFAULT_TERM) != 0)
+	term_console = FALSE;
+    else
+    {
+	term_console = TRUE;
+# ifdef AMIGA
+	win_resize_on();	// enable window resizing reports
+# endif
+    }
+#endif
+
+    ttest(TRUE);	// make sure we have a valid set of terminal codes
+
+    full_screen = TRUE;		// we can use termcap codes from now on
+    set_term_defaults();	// use current values as defaults
+#ifdef FEAT_TERMRESPONSE
+    LOG_TR(("setting crv_status to STATUS_GET"));
+    crv_status.tr_progress = STATUS_GET;	// Get terminal version later
+    write_t_8u_state = FALSE;
+#endif
+
+    /*
+     * Initialize the terminal with the appropriate termcap codes.
+     * Set the mouse and window title if possible.
+     * Don't do this when starting, need to parse the .vimrc first, because it
+     * may redefine t_TI etc.
+     */
+    if (starting != NO_SCREEN)
+    {
+	starttermcap();		// may change terminal mode
+	setmouse();		// may start using the mouse
+	maketitle();		// may display window title
+    }
+
+	// display initial screen after ttest() checking. jw.
+    if (width <= 0 || height <= 0)
+    {
+	// termcap failed to report size
+	// set defaults, in case ui_get_shellsize() also fails
+	width = 80;
+#if defined(MSWIN)
+	height = 25;	    // console is often 25 lines
+#else
+	height = 24;	    // most terminals are 24 lines
+#endif
+    }
+    set_shellsize(width, height, FALSE);	// may change Rows
+    if (starting != NO_SCREEN)
+    {
+	if (scroll_region)
+	    scroll_region_reset();		// In case Rows changed
+	check_map_keycodes();	// check mappings for terminal codes used
+
+	{
+	    buf_T	*buf;
+	    aco_save_T	aco;
+
+	    /*
+	     * Execute the TermChanged autocommands for each buffer that is
+	     * loaded.
+	     */
+	    FOR_ALL_BUFFERS(buf)
+	    {
+		if (curbuf->b_ml.ml_mfp != NULL)
+		{
+		    aucmd_prepbuf(&aco, buf);
+		    if (curbuf == buf)
+		    {
+			apply_autocmds(EVENT_TERMCHANGED, NULL, NULL, FALSE,
+								      curbuf);
+			// restore curwin/curbuf and a few other things
+			aucmd_restbuf(&aco);
+		    }
+		}
+	    }
+	}
+    }
+
+#ifdef FEAT_TERMRESPONSE
+    may_req_termresponse();
+#endif
+
+    return OK;
+}
+
+#if defined(EXITFREE) || defined(PROTO)
+
+# ifdef HAVE_DEL_CURTERM
+#  include <term.h>	    // declares cur_term
+# endif
+
+/*
+ * If supported, delete "cur_term", which caches terminal related entries.
+ * Avoids that valgrind reports possibly lost memory.
+ */
+    void
+free_cur_term(void)
+{
+# ifdef HAVE_DEL_CURTERM
+    if (cur_term)
+	del_curterm(cur_term);
+# endif
+}
+
+#endif
+
+#ifdef HAVE_TGETENT
+/*
+ * Call tgetent()
+ * Return error message if it fails, NULL if it's OK.
+ */
+    static char *
+invoke_tgetent(char_u *tbuf, char_u *term)
+{
+    int	    i;
+
+    // Note: Valgrind may report a leak here, because the library keeps one
+    // buffer around that we can't ever free.
+    i = TGETENT(tbuf, term);
+    if (i < 0		    // -1 is always an error
+# ifdef TGETENT_ZERO_ERR
+	    || i == 0	    // sometimes zero is also an error
+# endif
+       )
+    {
+	// On FreeBSD tputs() gets a SEGV after a tgetent() which fails.  Call
+	// tgetent() with the always existing "dumb" entry to avoid a crash or
+	// hang.
+	(void)TGETENT(tbuf, "dumb");
+
+	if (i < 0)
+# ifdef TGETENT_ZERO_ERR
+	    return _(e_cannot_open_termcap_file);
+	if (i == 0)
+# endif
+#ifdef TERMINFO
+	    return _(e_terminal_entry_not_found_in_terminfo);
+#else
+	    return _(e_terminal_entry_not_found_in_termcap);
+#endif
+    }
+    return NULL;
+}
+
+/*
+ * Some versions of tgetstr() have been reported to return -1 instead of NULL.
+ * Fix that here.
+ */
+    static char_u *
+vim_tgetstr(char *s, char_u **pp)
+{
+    char	*p;
+
+    p = tgetstr(s, (char **)pp);
+    if (p == (char *)-1)
+	p = NULL;
+    return (char_u *)p;
+}
+#endif // HAVE_TGETENT
+
+#if defined(HAVE_TGETENT) && (defined(UNIX) || defined(VMS) || defined(MACOS_X))
+/*
+ * Get Columns and Rows from the termcap. Used after a window signal if the
+ * ioctl() fails. It doesn't make sense to call tgetent each time if the "co"
+ * and "li" entries never change. But on some systems this works.
+ * Errors while getting the entries are ignored.
+ */
+    void
+getlinecol(
+    long	*cp,	// pointer to columns
+    long	*rp)	// pointer to rows
+{
+    char_u	tbuf[TBUFSZ];
+
+    if (T_NAME == NULL || *T_NAME == NUL
+	    || invoke_tgetent(tbuf, T_NAME) != NULL)
+	return;
+
+    if (*cp == 0)
+	*cp = tgetnum("co");
+    if (*rp == 0)
+	*rp = tgetnum("li");
+}
+#endif // defined(HAVE_TGETENT) && defined(UNIX)
+
+/*
+ * Get a string entry from the termcap and add it to the list of termcodes.
+ * Used for <t_xx> special keys.
+ * Give an error message for failure when not sourcing.
+ * If force given, replace an existing entry.
+ * Return FAIL if the entry was not found, OK if the entry was added.
+ */
+    int
+add_termcap_entry(char_u *name, int force)
+{
+    char_u  *term;
+    int	    key;
+#ifdef HAVE_TGETENT
+    char_u  *string;
+    int	    i;
+    int	    builtin_first;
+    char_u  tbuf[TBUFSZ];
+    char_u  tstrbuf[TBUFSZ];
+    char_u  *tp = tstrbuf;
+    char    *error_msg = NULL;
+#endif
+
+/*
+ * If the GUI is running or will start in a moment, we only support the keys
+ * that the GUI can produce.
+ */
+#ifdef FEAT_GUI
+    if (gui.in_use || gui.starting)
+	return gui_mch_haskey(name);
+#endif
+
+    if (!force && find_termcode(name) != NULL)	    // it's already there
+	return OK;
+
+    term = T_NAME;
+    if (term == NULL || *term == NUL)	    // 'term' not defined yet
+	return FAIL;
+
+    if (term_is_builtin(term))		    // name starts with "builtin_"
+    {
+	term += 8;
+#ifdef HAVE_TGETENT
+	builtin_first = TRUE;
+#endif
+    }
+#ifdef HAVE_TGETENT
+    else
+	builtin_first = p_tbi;
+#endif
+
+#ifdef HAVE_TGETENT
+/*
+ * We can get the entry from the builtin termcap and from the external one.
+ * If 'ttybuiltin' is on or the terminal name starts with "builtin_", try
+ * builtin termcap first.
+ * If 'ttybuiltin' is off, try external termcap first.
+ */
+    for (i = 0; i < 2; ++i)
+    {
+	if ((!builtin_first) == i)
+#endif
+	/*
+	 * Search in builtin termcaps
+	 */
+	{
+	    tcap_entry_T *termp = find_builtin_term(term);
+	    if (termp != NULL)	// found it
+	    {
+		key = TERMCAP2KEY(name[0], name[1]);
+		++termp;
+		while (termp->bt_entry != (int)KS_NAME)
+		{
+		    if ((int)termp->bt_entry == key)
+		    {
+			add_termcode(name, (char_u *)termp->bt_string,
+							  term_is_8bit(term));
+			return OK;
+		    }
+		    ++termp;
+		}
+	    }
+	}
+#ifdef HAVE_TGETENT
+	else
+	/*
+	 * Search in external termcap
+	 */
+	{
+	    error_msg = invoke_tgetent(tbuf, term);
+	    if (error_msg == NULL)
+	    {
+		string = TGETSTR((char *)name, &tp);
+		if (string != NULL && *string != NUL)
+		{
+		    add_termcode(name, string, FALSE);
+		    return OK;
+		}
+	    }
+	}
+    }
+#endif
+
+    if (SOURCING_NAME == NULL)
+    {
+#ifdef HAVE_TGETENT
+	if (error_msg != NULL)
+	    emsg(error_msg);
+	else
+#endif
+	    semsg(_(e_no_str_entry_in_termcap), name);
+    }
+    return FAIL;
+}
+
+    static int
+term_is_builtin(char_u *name)
+{
+    return (STRNCMP(name, "builtin_", (size_t)8) == 0);
+}
+
+/*
+ * Return TRUE if terminal "name" uses CSI instead of <Esc>[.
+ * Assume that the terminal is using 8-bit controls when the name contains
+ * "8bit", like in "xterm-8bit".
+ */
+    int
+term_is_8bit(char_u *name)
+{
+    return (detected_8bit || strstr((char *)name, "8bit") != NULL);
+}
+
+/*
+ * Translate terminal control chars from 7-bit to 8-bit:
+ * <Esc>[ -> CSI  <M_C_[>
+ * <Esc>] -> OSC  <M-C-]>
+ * <Esc>O -> <M-C-O>
+ */
+    static int
+term_7to8bit(char_u *p)
+{
+    if (*p != ESC)
+	return 0;
+
+    if (p[1] == '[')
+	return CSI;
+    else if (p[1] == ']')
+	return OSC;
+    else if (p[1] == 'O')
+	return 0x8f;
+    return 0;
+}
+
+#if defined(FEAT_GUI) || defined(PROTO)
+    int
+term_is_gui(char_u *name)
+{
+    return (STRCMP(name, "builtin_gui") == 0 || STRCMP(name, "gui") == 0);
+}
+#endif
+
+#if !defined(HAVE_TGETENT) || defined(AMIGA) || defined(PROTO)
+
+    char_u *
+tltoa(unsigned long i)
+{
+    static char_u buf[16];
+    char_u	*p;
+
+    p = buf + 15;
+    *p = '\0';
+    do
+    {
+	--p;
+	*p = (char_u) (i % 10 + '0');
+	i /= 10;
+    }
+    while (i > 0 && p > buf);
+    return p;
+}
+#endif
+
+#ifndef HAVE_TGETENT
+
+/*
+ * minimal tgoto() implementation.
+ * no padding and we only parse for %i %d and %+char
+ */
+    static char *
+tgoto(char *cm, int x, int y)
+{
+    static char buf[30];
+    char *p, *s, *e;
+
+    if (!cm)
+	return "OOPS";
+    e = buf + 29;
+    for (s = buf; s < e && *cm; cm++)
+    {
+	if (*cm != '%')
+	{
+	    *s++ = *cm;
+	    continue;
+	}
+	switch (*++cm)
+	{
+	case 'd':
+	    p = (char *)tltoa((unsigned long)y);
+	    y = x;
+	    while (*p)
+		*s++ = *p++;
+	    break;
+	case 'i':
+	    x++;
+	    y++;
+	    break;
+	case '+':
+	    *s++ = (char)(*++cm + y);
+	    y = x;
+	    break;
+	case '%':
+	    *s++ = *cm;
+	    break;
+	default:
+	    return "OOPS";
+	}
+    }
+    *s = '\0';
+    return buf;
+}
+
+#endif // HAVE_TGETENT
+
+/*
+ * Set the terminal name and initialize the terminal options.
+ * If "name" is NULL or empty, get the terminal name from the environment.
+ * If that fails, use the default terminal name.
+ */
+    void
+termcapinit(char_u *name)
+{
+    char_u	*term = name;
+
+    if (term != NULL && *term == NUL)
+	term = NULL;	    // empty name is equal to no name
+
+#ifndef MSWIN
+    if (term == NULL)
+	term = mch_getenv((char_u *)"TERM");
+#endif
+    if (term == NULL || *term == NUL)
+	term = DEFAULT_TERM;
+    set_string_option_direct((char_u *)"term", -1, term, OPT_FREE, 0);
+
+    // Set the default terminal name.
+    set_string_default("term", term);
+    set_string_default("ttytype", term);
+
+    // Avoid using "term" here, because the next mch_getenv() may overwrite it.
+    set_termname(T_NAME != NULL ? T_NAME : term);
+}
+
+/*
+ * The number of calls to ui_write is reduced by using "out_buf".
+ */
+#define OUT_SIZE	2047
+
+// add one to allow mch_write() in os_win32.c to append a NUL
+static char_u		out_buf[OUT_SIZE + 1];
+
+static int		out_pos = 0;	// number of chars in out_buf
+
+// Since the maximum number of SGR parameters shown as a normal value range is
+// 16, the escape sequence length can be 4 * 16 + lead + tail.
+#define MAX_ESC_SEQ_LEN	80
+
+/*
+ * out_flush(): flush the output buffer
+ */
+    void
+out_flush(void)
+{
+    int	    len;
+
+    if (out_pos == 0)
+	return;
+
+    // set out_pos to 0 before ui_write, to avoid recursiveness
+    len = out_pos;
+    out_pos = 0;
+    ui_write(out_buf, len, FALSE);
+#ifdef FEAT_EVAL
+    if (ch_log_output != FALSE)
+    {
+	out_buf[len] = NUL;
+	ch_log(NULL, "raw %s output: \"%s\"",
+# ifdef FEAT_GUI
+		(gui.in_use && !gui.dying && !gui.starting) ? "GUI" :
+# endif
+		"terminal",
+		out_buf);
+	if (ch_log_output == TRUE)
+	    ch_log_output = FALSE;  // only log once
+    }
+#endif
+}
+
+/*
+ * out_flush_cursor(): flush the output buffer and redraw the cursor.
+ * Does not flush recursively in the GUI to avoid slow drawing.
+ */
+    void
+out_flush_cursor(
+    int	    force UNUSED,   // when TRUE, update cursor even when not moved
+    int	    clear_selection UNUSED) // clear selection under cursor
+{
+    mch_disable_flush();
+    out_flush();
+    mch_enable_flush();
+#ifdef FEAT_GUI
+    if (gui.in_use)
+    {
+	gui_update_cursor(force, clear_selection);
+	gui_may_flush();
+    }
+#endif
+}
+
+
+/*
+ * Sometimes a byte out of a multi-byte character is written with out_char().
+ * To avoid flushing half of the character, call this function first.
+ */
+    void
+out_flush_check(void)
+{
+    if (enc_dbcs != 0 && out_pos >= OUT_SIZE - MB_MAXBYTES)
+	out_flush();
+}
+
+#ifdef FEAT_GUI
+/*
+ * out_trash(): Throw away the contents of the output buffer
+ */
+    void
+out_trash(void)
+{
+    out_pos = 0;
+}
+#endif
+
+/*
+ * out_char(c): put a byte into the output buffer.
+ *		Flush it if it becomes full.
+ * This should not be used for outputting text on the screen (use functions
+ * like msg_puts() and screen_putchar() for that).
+ */
+    void
+out_char(unsigned c)
+{
+#if defined(UNIX) || defined(VMS) || defined(AMIGA) || defined(MACOS_X)
+    if (c == '\n')	// turn LF into CR-LF (CRMOD doesn't seem to do this)
+	out_char('\r');
+#endif
+
+    out_buf[out_pos++] = c;
+
+    // For testing we flush each time.
+    if (out_pos >= OUT_SIZE || p_wd)
+	out_flush();
+}
+
+/*
+ * Output "c" like out_char(), but don't flush when p_wd is set.
+ */
+    static int
+out_char_nf(int c)
+{
+    out_buf[out_pos++] = (unsigned)c;
+
+    if (out_pos >= OUT_SIZE)
+	out_flush();
+    return (unsigned)c;
+}
+
+/*
+ * A never-padding out_str().
+ * Use this whenever you don't want to run the string through tputs().
+ * tputs() above is harmless, but tputs() from the termcap library
+ * is likely to strip off leading digits, that it mistakes for padding
+ * information, and "%i", "%d", etc.
+ * This should only be used for writing terminal codes, not for outputting
+ * normal text (use functions like msg_puts() and screen_putchar() for that).
+ */
+    void
+out_str_nf(char_u *s)
+{
+    // avoid terminal strings being split up
+    if (out_pos > OUT_SIZE - MAX_ESC_SEQ_LEN)
+	out_flush();
+
+    for (char_u *p = s; *p != NUL; ++p)
+	out_char_nf(*p);
+
+    // For testing we write one string at a time.
+    if (p_wd)
+	out_flush();
+}
+
+/*
+ * A conditional-flushing out_str, mainly for visualbell.
+ * Handles a delay internally, because termlib may not respect the delay or do
+ * it at the wrong time.
+ * Note: Only for terminal strings.
+ */
+    void
+out_str_cf(char_u *s)
+{
+    if (s == NULL || *s == NUL)
+	return;
+
+#ifdef HAVE_TGETENT
+    char_u *p;
+#endif
+
+#ifdef FEAT_GUI
+    // Don't use tputs() when GUI is used, ncurses crashes.
+    if (gui.in_use)
+    {
+	out_str_nf(s);
+	return;
+    }
+#endif
+    if (out_pos > OUT_SIZE - MAX_ESC_SEQ_LEN)
+	out_flush();
+#ifdef HAVE_TGETENT
+    for (p = s; *s; ++s)
+    {
+	// flush just before delay command
+	if (*s == '$' && *(s + 1) == '<')
+	{
+	    char_u save_c = *s;
+	    int duration = atoi((char *)s + 2);
+
+	    *s = NUL;
+	    tputs((char *)p, 1, TPUTSFUNCAST out_char_nf);
+	    *s = save_c;
+	    out_flush();
+# ifdef ELAPSED_FUNC
+	    // Only sleep here if we can limit this happening in
+	    // vim_beep().
+	    p = vim_strchr(s, '>');
+	    if (p == NULL || duration <= 0)
+	    {
+		// can't parse the time, don't sleep here
+		p = s;
+	    }
+	    else
+	    {
+		++p;
+		do_sleep(duration, FALSE);
+	    }
+# else
+	    // Rely on the terminal library to sleep.
+	    p = s;
+# endif
+	    break;
+	}
+    }
+    tputs((char *)p, 1, TPUTSFUNCAST out_char_nf);
+#else
+    while (*s)
+	out_char_nf(*s++);
+#endif
+
+    // For testing we write one string at a time.
+    if (p_wd)
+	out_flush();
+}
+
+/*
+ * out_str(s): Put a character string a byte at a time into the output buffer.
+ * If HAVE_TGETENT is defined use tputs(), the termcap parser. (jw)
+ * This should only be used for writing terminal codes, not for outputting
+ * normal text (use functions like msg_puts() and screen_putchar() for that).
+ */
+    void
+out_str(char_u *s)
+{
+    if (s == NULL || *s == NUL)
+	return;
+
+#ifdef FEAT_GUI
+    // Don't use tputs() when GUI is used, ncurses crashes.
+    if (gui.in_use)
+    {
+	out_str_nf(s);
+	return;
+    }
+#endif
+    // avoid terminal strings being split up
+    if (out_pos > OUT_SIZE - MAX_ESC_SEQ_LEN)
+	out_flush();
+#ifdef HAVE_TGETENT
+    tputs((char *)s, 1, TPUTSFUNCAST out_char_nf);
+#else
+    while (*s)
+	out_char_nf(*s++);
+#endif
+
+    // For testing we write one string at a time.
+    if (p_wd)
+	out_flush();
+}
+
+/*
+ * cursor positioning using termcap parser. (jw)
+ */
+    void
+term_windgoto(int row, int col)
+{
+    OUT_STR(tgoto((char *)T_CM, col, row));
+}
+
+    void
+term_cursor_right(int i)
+{
+    OUT_STR(tgoto((char *)T_CRI, 0, i));
+}
+
+    void
+term_append_lines(int line_count)
+{
+    OUT_STR(tgoto((char *)T_CAL, 0, line_count));
+}
+
+    void
+term_delete_lines(int line_count)
+{
+    OUT_STR(tgoto((char *)T_CDL, 0, line_count));
+}
+
+#if defined(UNIX) || defined(PROTO)
+    void
+term_enable_mouse(int enable)
+{
+    int on = enable ? 1 : 0;
+    OUT_STR(tgoto((char *)T_CXM, 0, on));
+}
+#endif
+
+#if defined(HAVE_TGETENT) || defined(PROTO)
+    void
+term_set_winpos(int x, int y)
+{
+    // Can't handle a negative value here
+    if (x < 0)
+	x = 0;
+    if (y < 0)
+	y = 0;
+    OUT_STR(tgoto((char *)T_CWP, y, x));
+}
+
+# if defined(FEAT_TERMRESPONSE) || defined(PROTO)
+/*
+ * Return TRUE if we can request the terminal for a response.
+ */
+    static int
+can_get_termresponse(void)
+{
+    return cur_tmode == TMODE_RAW
+	    && termcap_active
+#  ifdef UNIX
+	    && (is_not_a_term() || (isatty(1) && isatty(read_cmd_fd)))
+#  endif
+	    && p_ek;
+}
+
+/*
+ * Set "status" to STATUS_SENT.
+ */
+    static void
+termrequest_sent(termrequest_T *status)
+{
+    status->tr_progress = STATUS_SENT;
+    status->tr_start = time(NULL);
+}
+
+/*
+ * Return TRUE if any of the requests are in STATUS_SENT.
+ */
+    static int
+termrequest_any_pending(void)
+{
+    int	    i;
+    time_t  now = time(NULL);
+
+    for (i = 0; all_termrequests[i] != NULL; ++i)
+    {
+	if (all_termrequests[i]->tr_progress == STATUS_SENT)
+	{
+	    if (all_termrequests[i]->tr_start > 0 && now > 0
+				    && all_termrequests[i]->tr_start + 2 < now)
+		// Sent the request more than 2 seconds ago and didn't get a
+		// response, assume it failed.
+		all_termrequests[i]->tr_progress = STATUS_FAIL;
+	    else
+		return TRUE;
+	}
+    }
+    return FALSE;
+}
+
+static int winpos_x = -1;
+static int winpos_y = -1;
+static int did_request_winpos = 0;
+
+# if defined(FEAT_EVAL) || defined(FEAT_TERMINAL) || defined(PROTO)
+/*
+ * Try getting the Vim window position from the terminal.
+ * Returns OK or FAIL.
+ */
+    int
+term_get_winpos(int *x, int *y, varnumber_T timeout)
+{
+    int count = 0;
+    int prev_winpos_x = winpos_x;
+    int prev_winpos_y = winpos_y;
+
+    if (*T_CGP == NUL || !can_get_termresponse())
+	return FAIL;
+    winpos_x = -1;
+    winpos_y = -1;
+    ++did_request_winpos;
+    termrequest_sent(&winpos_status);
+    OUT_STR(T_CGP);
+    out_flush();
+
+    // Try reading the result for "timeout" msec.
+    while (count++ <= timeout / 10 && !got_int)
+    {
+	(void)vpeekc_nomap();
+	if (winpos_x >= 0 && winpos_y >= 0)
+	{
+	    *x = winpos_x;
+	    *y = winpos_y;
+	    return OK;
+	}
+	ui_delay(10L, FALSE);
+    }
+    // Do not reset "did_request_winpos", if we timed out the response might
+    // still come later and we must consume it.
+
+    winpos_x = prev_winpos_x;
+    winpos_y = prev_winpos_y;
+    if (timeout < 10 && prev_winpos_y >= 0 && prev_winpos_x >= 0)
+    {
+	// Polling: return previous values if we have them.
+	*x = winpos_x;
+	*y = winpos_y;
+	return OK;
+    }
+
+    return FALSE;
+}
+#  endif
+# endif
+
+    void
+term_set_winsize(int height, int width)
+{
+    OUT_STR(tgoto((char *)T_CWS, width, height));
+}
+#endif
+
+    static void
+term_color(char_u *s, int n)
+{
+    char	buf[20];
+    int		i = *s == CSI ? 1 : 2;
+		// index in s[] just after <Esc>[ or CSI
+
+    // Special handling of 16 colors, because termcap can't handle it
+    // Also accept "\e[3%dm" for TERMINFO, it is sometimes used
+    // Also accept CSI instead of <Esc>[
+    if (n >= 8 && t_colors >= 16
+	      && ((s[0] == ESC && s[1] == '[')
+#if defined(FEAT_VTP) && defined(FEAT_TERMGUICOLORS)
+		  || (s[0] == ESC && s[1] == '|')
+#endif
+		  || (s[0] == CSI && (i = 1) == 1))
+	      && s[i] != NUL
+	      && (STRCMP(s + i + 1, "%p1%dm") == 0
+		  || STRCMP(s + i + 1, "%dm") == 0)
+	      && (s[i] == '3' || s[i] == '4'))
+    {
+#ifdef TERMINFO
+	char *format = "%s%s%%p1%%dm";
+#else
+	char *format = "%s%s%%dm";
+#endif
+	char *lead = i == 2 ? (
+#if defined(FEAT_VTP) && defined(FEAT_TERMGUICOLORS)
+		    s[1] == '|' ? "\033|" :
+#endif
+		    "\033[") : "\233";
+	char *tail = s[i] == '3' ? (n >= 16 ? "38;5;" : "9")
+				 : (n >= 16 ? "48;5;" : "10");
+
+	sprintf(buf, format, lead, tail);
+	OUT_STR(tgoto(buf, 0, n >= 16 ? n : n - 8));
+    }
+    else
+	OUT_STR(tgoto((char *)s, 0, n));
+}
+
+    void
+term_fg_color(int n)
+{
+    // Use "AF" termcap entry if present, "Sf" entry otherwise
+    if (*T_CAF)
+	term_color(T_CAF, n);
+    else if (*T_CSF)
+	term_color(T_CSF, n);
+}
+
+    void
+term_bg_color(int n)
+{
+    // Use "AB" termcap entry if present, "Sb" entry otherwise
+    if (*T_CAB)
+	term_color(T_CAB, n);
+    else if (*T_CSB)
+	term_color(T_CSB, n);
+}
+
+    void
+term_ul_color(int n)
+{
+    if (*T_CAU)
+	term_color(T_CAU, n);
+}
+
+/*
+ * Return "dark" or "light" depending on the kind of terminal.
+ * This is just guessing!  Recognized are:
+ * "linux"	    Linux console
+ * "screen.linux"   Linux console with screen
+ * "cygwin.*"	    Cygwin shell
+ * "putty.*"	    Putty program
+ * We also check the COLORFGBG environment variable, which is set by
+ * rxvt and derivatives. This variable contains either two or three
+ * values separated by semicolons; we want the last value in either
+ * case. If this value is 0-6 or 8, our background is dark.
+ */
+    char_u *
+term_bg_default(void)
+{
+#if defined(MSWIN)
+    // DOS console is nearly always black
+    return (char_u *)"dark";
+#else
+    char_u	*p;
+
+    if (STRCMP(T_NAME, "linux") == 0
+	    || STRCMP(T_NAME, "screen.linux") == 0
+	    || STRNCMP(T_NAME, "cygwin", 6) == 0
+	    || STRNCMP(T_NAME, "putty", 5) == 0
+	    || ((p = mch_getenv((char_u *)"COLORFGBG")) != NULL
+		&& (p = vim_strrchr(p, ';')) != NULL
+		&& ((p[1] >= '0' && p[1] <= '6') || p[1] == '8')
+		&& p[2] == NUL))
+	return (char_u *)"dark";
+    return (char_u *)"light";
+#endif
+}
+
+#if defined(FEAT_TERMGUICOLORS) || defined(PROTO)
+
+#define RED(rgb)   (((long_u)(rgb) >> 16) & 0xFF)
+#define GREEN(rgb) (((long_u)(rgb) >>  8) & 0xFF)
+#define BLUE(rgb)  (((long_u)(rgb)      ) & 0xFF)
+
+    static void
+term_rgb_color(char_u *s, guicolor_T rgb)
+{
+#define MAX_COLOR_STR_LEN 100
+    char	buf[MAX_COLOR_STR_LEN];
+
+    if (*s == NUL)
+	return;
+    vim_snprintf(buf, MAX_COLOR_STR_LEN,
+				  (char *)s, RED(rgb), GREEN(rgb), BLUE(rgb));
+#ifdef FEAT_VTP
+    if (use_vtp() && (p_tgc || t_colors >= 256))
+    {
+	out_flush();
+	buf[1] = '[';
+	vtp_printf(buf);
+    }
+    else
+#endif
+	OUT_STR(buf);
+}
+
+    void
+term_fg_rgb_color(guicolor_T rgb)
+{
+    if (rgb != INVALCOLOR)
+	term_rgb_color(T_8F, rgb);
+}
+
+    void
+term_bg_rgb_color(guicolor_T rgb)
+{
+    if (rgb != INVALCOLOR)
+	term_rgb_color(T_8B, rgb);
+}
+
+    void
+term_ul_rgb_color(guicolor_T rgb)
+{
+# ifdef FEAT_TERMRESPONSE
+    // If the user explicitly sets t_8u then use it.  Otherwise wait for
+    // termresponse to be received, which is when t_8u would be set and a
+    // redraw is needed if it was used.
+    if (!option_was_set((char_u *)"t_8u") && write_t_8u_state != OK)
+	write_t_8u_state = MAYBE;
+    else
+# endif
+	term_rgb_color(T_8U, rgb);
+}
+#endif
+
+#if (defined(UNIX) || defined(VMS) || defined(MACOS_X)) || defined(PROTO)
+/*
+ * Generic function to set window title, using t_ts and t_fs.
+ */
+    void
+term_settitle(char_u *title)
+{
+    MAY_WANT_TO_LOG_THIS;
+
+    // t_ts takes one argument: column in status line
+    OUT_STR(tgoto((char *)T_TS, 0, 0));	// set title start
+    out_str_nf(title);
+    out_str(T_FS);			// set title end
+    out_flush();
+}
+
+/*
+ * Tell the terminal to push (save) the title and/or icon, so that it can be
+ * popped (restored) later.
+ */
+    void
+term_push_title(int which)
+{
+    if ((which & SAVE_RESTORE_TITLE) && T_CST != NULL && *T_CST != NUL)
+    {
+	OUT_STR(T_CST);
+	out_flush();
+    }
+
+    if ((which & SAVE_RESTORE_ICON) && T_SSI != NULL && *T_SSI != NUL)
+    {
+	OUT_STR(T_SSI);
+	out_flush();
+    }
+}
+
+/*
+ * Tell the terminal to pop the title and/or icon.
+ */
+    void
+term_pop_title(int which)
+{
+    if ((which & SAVE_RESTORE_TITLE) && T_CRT != NULL && *T_CRT != NUL)
+    {
+	OUT_STR(T_CRT);
+	out_flush();
+    }
+
+    if ((which & SAVE_RESTORE_ICON) && T_SRI != NULL && *T_SRI != NUL)
+    {
+	OUT_STR(T_SRI);
+	out_flush();
+    }
+}
+#endif
+
+/*
+ * Make sure we have a valid set or terminal options.
+ * Replace all entries that are NULL by empty_option
+ */
+    void
+ttest(int pairs)
+{
+    char_u *env_colors;
+
+    check_options();		    // make sure no options are NULL
+
+    /*
+     * MUST have "cm": cursor motion.
+     */
+    if (*T_CM == NUL)
+	emsg(_(e_terminal_capability_cm_required));
+
+    /*
+     * if "cs" defined, use a scroll region, it's faster.
+     */
+    if (*T_CS != NUL)
+	scroll_region = TRUE;
+    else
+	scroll_region = FALSE;
+
+    if (pairs)
+    {
+	/*
+	 * optional pairs
+	 */
+	// TP goes to normal mode for TI (invert) and TB (bold)
+	if (*T_ME == NUL)
+	    T_ME = T_MR = T_MD = T_MB = empty_option;
+	if (*T_SO == NUL || *T_SE == NUL)
+	    T_SO = T_SE = empty_option;
+	if (*T_US == NUL || *T_UE == NUL)
+	    T_US = T_UE = empty_option;
+	if (*T_CZH == NUL || *T_CZR == NUL)
+	    T_CZH = T_CZR = empty_option;
+
+	// T_VE is needed even though T_VI is not defined
+	if (*T_VE == NUL)
+	    T_VI = empty_option;
+
+	// if 'mr' or 'me' is not defined use 'so' and 'se'
+	if (*T_ME == NUL)
+	{
+	    T_ME = T_SE;
+	    T_MR = T_SO;
+	    T_MD = T_SO;
+	}
+
+	// if 'so' or 'se' is not defined use 'mr' and 'me'
+	if (*T_SO == NUL)
+	{
+	    T_SE = T_ME;
+	    if (*T_MR == NUL)
+		T_SO = T_MD;
+	    else
+		T_SO = T_MR;
+	}
+
+	// if 'ZH' or 'ZR' is not defined use 'mr' and 'me'
+	if (*T_CZH == NUL)
+	{
+	    T_CZR = T_ME;
+	    if (*T_MR == NUL)
+		T_CZH = T_MD;
+	    else
+		T_CZH = T_MR;
+	}
+
+	// "Sb" and "Sf" come in pairs
+	if (*T_CSB == NUL || *T_CSF == NUL)
+	{
+	    T_CSB = empty_option;
+	    T_CSF = empty_option;
+	}
+
+	// "AB" and "AF" come in pairs
+	if (*T_CAB == NUL || *T_CAF == NUL)
+	{
+	    T_CAB = empty_option;
+	    T_CAF = empty_option;
+	}
+
+	// if 'Sb' and 'AB' are not defined, reset "Co"
+	if (*T_CSB == NUL && *T_CAB == NUL)
+	    free_one_termoption(T_CCO);
+
+	// Set 'weirdinvert' according to value of 't_xs'
+	p_wiv = (*T_XS != NUL);
+    }
+    need_gather = TRUE;
+
+    // Set t_colors to the value of $COLORS or t_Co.  Ignore $COLORS in the
+    // GUI.
+    t_colors = atoi((char *)T_CCO);
+#ifdef FEAT_GUI
+    if (!gui.in_use)
+#endif
+    {
+	env_colors = mch_getenv((char_u *)"COLORS");
+	if (env_colors != NULL && isdigit(*env_colors))
+	{
+	    int colors = atoi((char *)env_colors);
+
+	    if (colors != t_colors)
+		set_color_count(colors);
+	}
+    }
+}
+
+#if (defined(FEAT_GUI) && (defined(FEAT_MENU) || !defined(USE_ON_FLY_SCROLL))) \
+	|| defined(PROTO)
+/*
+ * Represent the given long_u as individual bytes, with the most significant
+ * byte first, and store them in dst.
+ */
+    void
+add_long_to_buf(long_u val, char_u *dst)
+{
+    int	    i;
+    int	    shift;
+
+    for (i = 1; i <= (int)sizeof(long_u); i++)
+    {
+	shift = 8 * (sizeof(long_u) - i);
+	dst[i - 1] = (char_u) ((val >> shift) & 0xff);
+    }
+}
+
+/*
+ * Interpret the next string of bytes in buf as a long integer, with the most
+ * significant byte first.  Note that it is assumed that buf has been through
+ * inchar(), so that NUL and K_SPECIAL will be represented as three bytes each.
+ * Puts result in val, and returns the number of bytes read from buf
+ * (between sizeof(long_u) and 2 * sizeof(long_u)), or -1 if not enough bytes
+ * were present.
+ */
+    static int
+get_long_from_buf(char_u *buf, long_u *val)
+{
+    int	    len;
+    char_u  bytes[sizeof(long_u)];
+    int	    i;
+    int	    shift;
+
+    *val = 0;
+    len = get_bytes_from_buf(buf, bytes, (int)sizeof(long_u));
+    if (len == -1)
+	return -1;
+    for (i = 0; i < (int)sizeof(long_u); i++)
+    {
+	shift = 8 * (sizeof(long_u) - 1 - i);
+	*val += (long_u)bytes[i] << shift;
+    }
+    return len;
+}
+#endif
+
+/*
+ * Read the next num_bytes bytes from buf, and store them in bytes.  Assume
+ * that buf has been through inchar().	Returns the actual number of bytes used
+ * from buf (between num_bytes and num_bytes*2), or -1 if not enough bytes were
+ * available.
+ */
+    int
+get_bytes_from_buf(char_u *buf, char_u *bytes, int num_bytes)
+{
+    int	    len = 0;
+    int	    i;
+    char_u  c;
+
+    for (i = 0; i < num_bytes; i++)
+    {
+	if ((c = buf[len++]) == NUL)
+	    return -1;
+	if (c == K_SPECIAL)
+	{
+	    if (buf[len] == NUL || buf[len + 1] == NUL)	    // cannot happen?
+		return -1;
+	    if (buf[len++] == (int)KS_ZERO)
+		c = NUL;
+	    // else it should be KS_SPECIAL; when followed by KE_FILLER c is
+	    // K_SPECIAL, or followed by KE_CSI and c must be CSI.
+	    if (buf[len++] == (int)KE_CSI)
+		c = CSI;
+	}
+	else if (c == CSI && buf[len] == KS_EXTRA
+					       && buf[len + 1] == (int)KE_CSI)
+	    // CSI is stored as CSI KS_SPECIAL KE_CSI to avoid confusion with
+	    // the start of a special key, see add_to_input_buf_csi().
+	    len += 2;
+	bytes[i] = c;
+    }
+    return len;
+}
+
+/*
+ * Check if the new shell size is valid, correct it if it's too small or way
+ * too big.
+ */
+    void
+check_shellsize(void)
+{
+    if (Rows < min_rows())	// need room for one window and command line
+	Rows = min_rows();
+    limit_screen_size();
+
+    // make sure these values are not invalid
+    if (cmdline_row >= Rows)
+	cmdline_row = Rows - 1;
+    if (msg_row >= Rows)
+	msg_row = Rows - 1;
+}
+
+/*
+ * Limit Rows and Columns to avoid an overflow in Rows * Columns.
+ */
+    void
+limit_screen_size(void)
+{
+    if (Columns < MIN_COLUMNS)
+	Columns = MIN_COLUMNS;
+    else if (Columns > 10000)
+	Columns = 10000;
+    if (Rows > 1000)
+	Rows = 1000;
+}
+
+/*
+ * Invoked just before the screen structures are going to be (re)allocated.
+ */
+    void
+win_new_shellsize(void)
+{
+    static int	old_Rows = 0;
+    static int	old_Columns = 0;
+
+    if (old_Rows != Rows || old_Columns != Columns)
+	ui_new_shellsize();
+    if (old_Rows != Rows)
+    {
+	// If 'window' uses the whole screen, keep it using that.
+	// Don't change it when set with "-w size" on the command line.
+	if (p_window == old_Rows - 1
+		    || (old_Rows == 0 && !option_was_set((char_u *)"window")))
+	    p_window = Rows - 1;
+	old_Rows = Rows;
+	shell_new_rows();	// update window sizes
+    }
+    if (old_Columns != Columns)
+    {
+	old_Columns = Columns;
+	shell_new_columns();	// update window sizes
+    }
+}
+
+/*
+ * Call this function when the Vim shell has been resized in any way.
+ * Will obtain the current size and redraw (also when size didn't change).
+ */
+    void
+shell_resized(void)
+{
+    set_shellsize(0, 0, FALSE);
+}
+
+/*
+ * Check if the shell size changed.  Handle a resize.
+ * When the size didn't change, nothing happens.
+ */
+    void
+shell_resized_check(void)
+{
+    int		old_Rows = Rows;
+    int		old_Columns = Columns;
+
+    if (exiting
+#ifdef FEAT_GUI
+	    // Do not get the size when executing a shell command during
+	    // startup.
+	    || gui.starting
+#endif
+	    )
+	return;
+
+    (void)ui_get_shellsize();
+    check_shellsize();
+    if (old_Rows != Rows || old_Columns != Columns)
+	shell_resized();
+}
+
+/*
+ * Set size of the Vim shell.
+ * If 'mustset' is TRUE, we must set Rows and Columns, do not get the real
+ * window size (this is used for the :win command).
+ * If 'mustset' is FALSE, we may try to get the real window size and if
+ * it fails use 'width' and 'height'.
+ */
+    static void
+set_shellsize_inner(int width, int height, int mustset)
+{
+    if (updating_screen)
+	// resizing while in update_screen() may cause a crash
+	return;
+
+    // curwin->w_buffer can be NULL when we are closing a window and the
+    // buffer (or window) has already been closed and removing a scrollbar
+    // causes a resize event. Don't resize then, it will happen after entering
+    // another buffer.
+    if (curwin->w_buffer == NULL || curwin->w_lines == NULL)
+	return;
+
+#ifdef AMIGA
+    out_flush();	    // must do this before mch_get_shellsize() for
+			    // some obscure reason
+#endif
+
+    if (mustset || (ui_get_shellsize() == FAIL && height != 0))
+    {
+	Rows = height;
+	Columns = width;
+	check_shellsize();
+	ui_set_shellsize(mustset);
+    }
+    else
+	check_shellsize();
+
+    // The window layout used to be adjusted here, but it now happens in
+    // screenalloc() (also invoked from screenclear()).  That is because the
+    // "busy" check above may skip this, but not screenalloc().
+
+    if (State != MODE_ASKMORE && State != MODE_EXTERNCMD
+						      && State != MODE_CONFIRM)
+	screenclear();
+    else
+	screen_start();	    // don't know where cursor is now
+
+    if (starting != NO_SCREEN)
+    {
+	maketitle();
+
+	changed_line_abv_curs();
+	invalidate_botline();
+
+	/*
+	 * We only redraw when it's needed:
+	 * - While at the more prompt or executing an external command, don't
+	 *   redraw, but position the cursor.
+	 * - While editing the command line, only redraw that.
+	 * - in Ex mode, don't redraw anything.
+	 * - Otherwise, redraw right now, and position the cursor.
+	 * Always need to call update_screen() or screenalloc(), to make
+	 * sure Rows/Columns and the size of ScreenLines[] is correct!
+	 */
+	if (State == MODE_ASKMORE || State == MODE_EXTERNCMD
+				     || State == MODE_CONFIRM || exmode_active)
+	{
+	    screenalloc(FALSE);
+	    repeat_message();
+	}
+	else
+	{
+	    if (curwin->w_p_scb)
+		do_check_scrollbind(TRUE);
+	    if (State & MODE_CMDLINE)
+	    {
+		update_screen(UPD_NOT_VALID);
+		redrawcmdline();
+	    }
+	    else
+	    {
+		update_topline();
+		if (pum_visible())
+		{
+		    redraw_later(UPD_NOT_VALID);
+		    ins_compl_show_pum();
+		}
+		update_screen(UPD_NOT_VALID);
+		if (redrawing())
+		    setcursor();
+	    }
+	}
+	cursor_on();	    // redrawing may have switched it off
+    }
+    out_flush();
+}
+
+    void
+set_shellsize(int width, int height, int mustset)
+{
+    static int	busy = FALSE;
+    static int	do_run = FALSE;
+
+    if (width < 0 || height < 0)    // just checking...
+	return;
+
+    if (State == MODE_HITRETURN || State == MODE_SETWSIZE)
+    {
+	// postpone the resizing
+	State = MODE_SETWSIZE;
+	return;
+    }
+
+    // Avoid recursiveness.  This can happen when setting the window size
+    // causes another window-changed signal or when two SIGWINCH signals come
+    // very close together.  There needs to be another run then after the
+    // current one is done to pick up the latest size.
+    do_run = TRUE;
+    if (busy)
+	return;
+
+    while (do_run)
+    {
+	do_run = FALSE;
+	busy = TRUE;
+	set_shellsize_inner(width, height, mustset);
+	busy = FALSE;
+    }
+}
+
+/*
+ * Output T_CTE, the t_TE termcap entry, and handle expected effects.
+ * The code possibly disables modifyOtherKeys and the Kitty keyboard protocol.
+ */
+    void
+out_str_t_TE(void)
+{
+    out_str(T_CTE);
+
+    // The seenModifyOtherKeys flag is not reset here.  We do expect t_TE to
+    // disable modifyOtherKeys, but until Xterm version 377 there is no way to
+    // detect it's enabled again after the following t_TI.  We assume that when
+    // seenModifyOtherKeys was set before it will still be valid.
+
+    // When the modifyOtherKeys level is detected to be 2 we expect t_TE to
+    // disable it.  Remembering that it was detected to be enabled is useful in
+    // some situations.
+    // The following t_TI is expected to request the state and then
+    // modify_otherkeys_state will be set again.
+    if (modify_otherkeys_state == MOKS_ENABLED
+	    || modify_otherkeys_state == MOKS_DISABLED)
+	modify_otherkeys_state = MOKS_DISABLED;
+    else if (modify_otherkeys_state != MOKS_INITIAL)
+	modify_otherkeys_state = MOKS_AFTER_T_TE;
+
+    // When the kitty keyboard protocol is enabled we expect t_TE to disable
+    // it.  Remembering that it was detected to be enabled is useful in some
+    // situations.
+    // The following t_TI is expected to request the state and then
+    // kitty_protocol_state will be set again.
+    if (kitty_protocol_state == KKPS_ENABLED
+	    || kitty_protocol_state == KKPS_DISABLED)
+	kitty_protocol_state = KKPS_DISABLED;
+    else
+	kitty_protocol_state = KKPS_AFTER_T_TE;
+}
+
+static int send_t_RK = FALSE;
+
+/*
+ * Output T_TI and setup for what follows.
+ */
+    void
+out_str_t_TI(void)
+{
+    out_str(T_CTI);
+
+    // Send t_RK when there is no more work to do.
+    send_t_RK = TRUE;
+}
+
+/*
+ * Output T_BE, but only when t_PS and t_PE are set.
+ */
+    void
+out_str_t_BE(void)
+{
+    char_u *p;
+
+    if (T_BE == NULL || *T_BE == NUL
+	    || (p = find_termcode((char_u *)"PS")) == NULL || *p == NUL
+	    || (p = find_termcode((char_u *)"PE")) == NULL || *p == NUL)
+	return;
+    out_str(T_BE);
+}
+
+/*
+ * If t_TI was recently sent and there is no typeahead or work to do, now send
+ * t_RK.  This is postponed to avoid the response arriving in a shell command
+ * or after Vim exits.
+ */
+    void
+may_send_t_RK(void)
+{
+    if (send_t_RK
+	    && !work_pending()
+	    && !ex_normal_busy
+#ifdef FEAT_EVAL
+	    && !in_feedkeys
+#endif
+	    && !exiting)
+    {
+	send_t_RK = FALSE;
+	out_str(T_CRK);
+	out_flush();
+    }
+}
+
+/*
+ * Set the terminal to TMODE_RAW (for Normal mode) or TMODE_COOK (for external
+ * commands and Ex mode).
+ */
+    void
+settmode(tmode_T tmode)
+{
+#ifdef FEAT_GUI
+    // don't set the term where gvim was started to any mode
+    if (gui.in_use)
+	return;
+#endif
+
+    if (!full_screen)
+	return;
+
+    /*
+     * When returning after calling a shell cur_tmode is TMODE_UNKNOWN,
+     * set the terminal to raw mode, even though we think it already is,
+     * because the shell program may have reset the terminal mode.
+     * When we think the terminal is normal, don't try to set it to
+     * normal again, because that causes problems (logout!) on some
+     * machines.
+     */
+    if (tmode != cur_tmode)
+    {
+#ifdef FEAT_TERMRESPONSE
+# ifdef FEAT_GUI
+	if (!gui.in_use && !gui.starting)
+# endif
+	{
+	    // May need to check for T_CRV response and termcodes, it
+	    // doesn't work in Cooked mode, an external program may get
+	    // them.
+	    if (tmode != TMODE_RAW && termrequest_any_pending())
+		(void)vpeekc_nomap();
+	    check_for_codes_from_term();
+	}
+#endif
+	if (tmode != TMODE_RAW)
+	    mch_setmouse(FALSE);	// switch mouse off
+
+	// Disable bracketed paste and modifyOtherKeys in cooked mode.
+	// Avoid doing this too often, on some terminals the codes are not
+	// handled properly.
+	if (termcap_active && tmode != TMODE_SLEEP
+		&& cur_tmode != TMODE_SLEEP)
+	{
+	    MAY_WANT_TO_LOG_THIS;
+
+	    if (tmode != TMODE_RAW)
+	    {
+		out_str(T_BD);	// disable bracketed paste mode
+		out_str_t_TE();	// possibly disables modifyOtherKeys
+	    }
+	    else
+	    {
+		out_str_t_BE();	// enable bracketed paste mode (should
+				// be before mch_settmode().
+		out_str_t_TI();	// possibly enables modifyOtherKeys
+	    }
+	}
+	out_flush();
+	mch_settmode(tmode);	// machine specific function
+	cur_tmode = tmode;
+	if (tmode == TMODE_RAW)
+	    setmouse();		// may switch mouse on
+	out_flush();
+    }
+#ifdef FEAT_TERMRESPONSE
+    may_req_termresponse();
+#endif
+}
+
+    void
+starttermcap(void)
+{
+    if (!full_screen || termcap_active)
+	return;
+
+    MAY_WANT_TO_LOG_THIS;
+
+    out_str(T_TI);			// start termcap mode
+    out_str_t_TI();			// start "raw" mode
+    out_str(T_KS);			// start "keypad transmit" mode
+    out_str_t_BE();			// enable bracketed paste mode
+
+#if defined(UNIX) || defined(VMS)
+    // Enable xterm's focus reporting mode when 'esckeys' is set.
+    if (p_ek && *T_FE != NUL)
+	out_str(T_FE);
+#endif
+
+    out_flush();
+    termcap_active = TRUE;
+    screen_start();			// don't know where cursor is now
+#ifdef FEAT_TERMRESPONSE
+# ifdef FEAT_GUI
+    if (!gui.in_use && !gui.starting)
+# endif
+    {
+	may_req_termresponse();
+	// Immediately check for a response.  If t_Co changes, we don't
+	// want to redraw with wrong colors first.
+	if (crv_status.tr_progress == STATUS_SENT)
+	    check_for_codes_from_term();
+    }
+#endif
+}
+
+    void
+stoptermcap(void)
+{
+    screen_stop_highlight();
+    reset_cterm_colors();
+
+    if (!termcap_active)
+	return;
+
+#ifdef FEAT_TERMRESPONSE
+# ifdef FEAT_GUI
+    if (!gui.in_use && !gui.starting)
+# endif
+    {
+	// May need to discard T_CRV, T_U7 or T_RBG response.
+	if (termrequest_any_pending())
+	{
+# ifdef UNIX
+	    // Give the terminal a chance to respond.
+	    mch_delay(100L, 0);
+# endif
+# ifdef TCIFLUSH
+	    // Discard data received but not read.
+	    if (exiting)
+		tcflush(fileno(stdin), TCIFLUSH);
+# endif
+	}
+	// Check for termcodes first, otherwise an external program may
+	// get them.
+	check_for_codes_from_term();
+    }
+#endif
+    MAY_WANT_TO_LOG_THIS;
+
+#if defined(UNIX) || defined(VMS)
+    // Disable xterm's focus reporting mode if 'esckeys' is set.
+    if (p_ek && *T_FD != NUL)
+	out_str(T_FD);
+#endif
+
+    out_str(T_BD);			// disable bracketed paste mode
+    out_str(T_KE);			// stop "keypad transmit" mode
+    out_flush();
+    termcap_active = FALSE;
+
+    // Output t_te before t_TE, t_te may switch between main and alternate
+    // screen and following codes may work on the active screen only.
+    //
+    // When using the Kitty keyboard protocol the main and alternate screen
+    // use a separate state.  If we are (or were) using the Kitty keyboard
+    // protocol and t_te is not empty (possibly switching screens) then
+    // output t_TE both before and after outputting t_te.
+    if (*T_TE != NUL && (kitty_protocol_state == KKPS_ENABLED
+		|| kitty_protocol_state == KKPS_DISABLED))
+	out_str_t_TE();		// probably disables the kitty keyboard
+				// protocol
+
+    out_str(T_TE);			// stop termcap mode
+    cursor_on();			// just in case it is still off
+    out_str_t_TE();			// stop "raw" mode, modifyOtherKeys and
+					// Kitty keyboard protocol
+    screen_start();			// don't know where cursor is now
+    out_flush();
+}
+
+#if defined(FEAT_TERMRESPONSE) || defined(PROTO)
+/*
+ * Request version string (for xterm) when needed.
+ * Only do this after switching to raw mode, otherwise the result will be
+ * echoed.
+ * Only do this after startup has finished, to avoid that the response comes
+ * while executing "-c !cmd" or even after "-c quit".
+ * Only do this after termcap mode has been started, otherwise the codes for
+ * the cursor keys may be wrong.
+ * Only do this when 'esckeys' is on, otherwise the response causes trouble in
+ * Insert mode.
+ * On Unix only do it when both output and input are a tty (avoid writing
+ * request to terminal while reading from a file).
+ * The result is caught in check_termcode().
+ */
+    void
+may_req_termresponse(void)
+{
+    if (crv_status.tr_progress == STATUS_GET
+	    && can_get_termresponse()
+	    && starting == 0
+	    && *T_CRV != NUL)
+    {
+	MAY_WANT_TO_LOG_THIS;
+	LOG_TR(("Sending CRV request"));
+	out_str(T_CRV);
+	termrequest_sent(&crv_status);
+	// check for the characters now, otherwise they might be eaten by
+	// get_keystroke()
+	out_flush();
+	(void)vpeekc_nomap();
+    }
+}
+
+/*
+ * Send sequences to the terminal and check with t_u7 how the cursor moves, to
+ * find out properties of the terminal.
+ * Note that this goes out before T_CRV, so that the result can be used when
+ * the termresponse arrives.
+ */
+    void
+check_terminal_behavior(void)
+{
+    int	    did_send = FALSE;
+
+    if (!can_get_termresponse() || starting != 0 || *T_U7 == NUL)
+	return;
+
+    if (u7_status.tr_progress == STATUS_GET
+	    && !option_was_set((char_u *)"ambiwidth"))
+    {
+	char_u	buf[16];
+
+	// Ambiguous width check.
+	// Check how the terminal treats ambiguous character width (UAX #11).
+	// First, we move the cursor to (1, 0) and print a test ambiguous
+	// character \u25bd (WHITE DOWN-POINTING TRIANGLE) and then query
+	// the current cursor position.  If the terminal treats \u25bd as
+	// single width, the position is (1, 1), or if it is treated as double
+	// width, that will be (1, 2).  This function has the side effect that
+	// changes cursor position, so it must be called immediately after
+	// entering termcap mode.
+	MAY_WANT_TO_LOG_THIS;
+	LOG_TR(("Sending request for ambiwidth check"));
+	// Do this in the second row.  In the first row the returned sequence
+	// may be CSI 1;2R, which is the same as <S-F3>.
+	term_windgoto(1, 0);
+	buf[mb_char2bytes(0x25bd, buf)] = NUL;
+	out_str(buf);
+	out_str(T_U7);
+	termrequest_sent(&u7_status);
+	out_flush();
+	did_send = TRUE;
+
+	// This overwrites a few characters on the screen, a redraw is needed
+	// after this. Clear them out for now.
+	screen_stop_highlight();
+	term_windgoto(1, 0);
+	out_str((char_u *)"  ");
+	line_was_clobbered(1);
+    }
+
+    if (xcc_status.tr_progress == STATUS_GET && Rows > 2)
+    {
+	// 2. Check compatibility with xterm.
+	// We move the cursor to (2, 0), print a test sequence and then query
+	// the current cursor position.  If the terminal properly handles
+	// unknown DCS string and CSI sequence with intermediate byte, the test
+	// sequence is ignored and the cursor does not move.  If the terminal
+	// handles test sequence incorrectly, a garbage string is displayed and
+	// the cursor does move.
+	MAY_WANT_TO_LOG_THIS;
+	LOG_TR(("Sending xterm compatibility test sequence."));
+	// Do this in the third row.  Second row is used by ambiguous
+	// character width check.
+	term_windgoto(2, 0);
+	// send the test DCS string.
+	out_str((char_u *)"\033Pzz\033\\");
+	// send the test CSI sequence with intermediate byte.
+	out_str((char_u *)"\033[0%m");
+	out_str(T_U7);
+	termrequest_sent(&xcc_status);
+	out_flush();
+	did_send = TRUE;
+
+	// If the terminal handles test sequence incorrectly, garbage text is
+	// displayed. Clear them out for now.
+	screen_stop_highlight();
+	term_windgoto(2, 0);
+	out_str((char_u *)"           ");
+	line_was_clobbered(2);
+    }
+
+    if (did_send)
+    {
+	term_windgoto(0, 0);
+
+	// Need to reset the known cursor position.
+	screen_start();
+
+	// check for the characters now, otherwise they might be eaten by
+	// get_keystroke()
+	out_flush();
+	(void)vpeekc_nomap();
+    }
+}
+
+/*
+ * Similar to requesting the version string: Request the terminal background
+ * color when it is the right moment.
+ */
+    void
+may_req_bg_color(void)
+{
+    if (can_get_termresponse() && starting == 0)
+    {
+	int didit = FALSE;
+
+# ifdef FEAT_TERMINAL
+	// Only request foreground if t_RF is set.
+	if (rfg_status.tr_progress == STATUS_GET && *T_RFG != NUL)
+	{
+	    MAY_WANT_TO_LOG_THIS;
+	    LOG_TR(("Sending FG request"));
+	    out_str(T_RFG);
+	    termrequest_sent(&rfg_status);
+	    didit = TRUE;
+	}
+# endif
+
+	// Only request background if t_RB is set.
+	if (rbg_status.tr_progress == STATUS_GET && *T_RBG != NUL)
+	{
+	    MAY_WANT_TO_LOG_THIS;
+	    LOG_TR(("Sending BG request"));
+	    out_str(T_RBG);
+	    termrequest_sent(&rbg_status);
+	    didit = TRUE;
+	}
+
+	if (didit)
+	{
+	    // check for the characters now, otherwise they might be eaten by
+	    // get_keystroke()
+	    out_flush();
+	    (void)vpeekc_nomap();
+	}
+    }
+}
+
+# ifdef DEBUG_TERMRESPONSE
+    static void
+log_tr(const char *fmt, ...)
+{
+    static FILE *fd_tr = NULL;
+    static proftime_T start;
+    proftime_T now;
+    va_list ap;
+
+    if (fd_tr == NULL)
+    {
+	fd_tr = fopen("termresponse.log", "w");
+	profile_start(&start);
+    }
+    now = start;
+    profile_end(&now);
+    fprintf(fd_tr, "%s: %s ", profile_msg(&now),
+				must_redraw == UPD_NOT_VALID ? "NV"
+				     : must_redraw == UPD_CLEAR ? "CL" : "  ");
+    va_start(ap, fmt);
+    vfprintf(fd_tr, fmt, ap);
+    va_end(ap);
+    fputc('\n', fd_tr);
+    fflush(fd_tr);
+}
+# endif
+#endif
+
+/*
+ * Return TRUE when saving and restoring the screen.
+ */
+    int
+swapping_screen(void)
+{
+    return (full_screen && *T_TI != NUL);
+}
+
+/*
+ * By outputting the 'cursor very visible' termcap code, for some windowed
+ * terminals this makes the screen scrolled to the correct position.
+ * Used when starting Vim or returning from a shell.
+ */
+    void
+scroll_start(void)
+{
+    if (*T_VS == NUL || *T_CVS == NUL)
+	return;
+
+    MAY_WANT_TO_LOG_THIS;
+    out_str(T_VS);
+    out_str(T_CVS);
+    screen_start();		// don't know where cursor is now
+}
+
+// True if cursor is not visible
+static int cursor_is_off = FALSE;
+
+// True if cursor is not visible due to an ongoing cursor-less sleep
+static int cursor_is_asleep = FALSE;
+
+/*
+ * Enable the cursor without checking if it's already enabled.
+ */
+    void
+cursor_on_force(void)
+{
+    out_str(T_VE);
+    cursor_is_off = FALSE;
+    cursor_is_asleep = FALSE;
+}
+
+/*
+ * Enable the cursor if it's currently off.
+ */
+    void
+cursor_on(void)
+{
+    if (cursor_is_off && !cursor_is_asleep)
+	cursor_on_force();
+}
+
+/*
+ * Disable the cursor.
+ */
+    void
+cursor_off(void)
+{
+    if (full_screen && !cursor_is_off)
+    {
+	out_str(T_VI);	    // disable cursor
+	cursor_is_off = TRUE;
+    }
+}
+
+#ifdef FEAT_GUI
+/*
+ * Check whether the cursor is invisible due to an ongoing cursor-less sleep
+ */
+    int
+cursor_is_sleeping(void)
+{
+    return cursor_is_asleep;
+}
+#endif
+
+/*
+ * Disable the cursor and mark it disabled by cursor-less sleep
+ */
+    void
+cursor_sleep(void)
+{
+    cursor_is_asleep = TRUE;
+    cursor_off();
+}
+
+/*
+ * Enable the cursor and mark it not disabled by cursor-less sleep
+ */
+    void
+cursor_unsleep(void)
+{
+    cursor_is_asleep = FALSE;
+    cursor_on();
+}
+
+#if defined(CURSOR_SHAPE) || defined(PROTO)
+/*
+ * Set cursor shape to match Insert or Replace mode.
+ */
+    void
+term_cursor_mode(int forced)
+{
+    static int showing_mode = -1;
+    char_u *p;
+
+    // Only do something when redrawing the screen and we can restore the
+    // mode.
+    if (!full_screen || *T_CEI == NUL)
+    {
+# ifdef FEAT_TERMRESPONSE
+	if (forced && initial_cursor_shape > 0)
+	    // Restore to initial values.
+	    term_cursor_shape(initial_cursor_shape, initial_cursor_blink);
+# endif
+	return;
+    }
+
+    if ((State & MODE_REPLACE) == MODE_REPLACE)
+    {
+	if (forced || showing_mode != MODE_REPLACE)
+	{
+	    if (*T_CSR != NUL)
+		p = T_CSR;	// Replace mode cursor
+	    else
+		p = T_CSI;	// fall back to Insert mode cursor
+	    if (*p != NUL)
+	    {
+		out_str(p);
+		showing_mode = MODE_REPLACE;
+	    }
+	}
+    }
+    else if (State & MODE_INSERT)
+    {
+	if ((forced || showing_mode != MODE_INSERT) && *T_CSI != NUL)
+	{
+	    out_str(T_CSI);	    // Insert mode cursor
+	    showing_mode = MODE_INSERT;
+	}
+    }
+    else if (forced || showing_mode != MODE_NORMAL)
+    {
+	out_str(T_CEI);		    // non-Insert mode cursor
+	showing_mode = MODE_NORMAL;
+    }
+}
+
+# if defined(FEAT_TERMINAL) || defined(PROTO)
+    void
+term_cursor_color(char_u *color)
+{
+    if (*T_CSC == NUL)
+	return;
+
+    out_str(T_CSC);		// set cursor color start
+    out_str_nf(color);
+    out_str(T_CEC);		// set cursor color end
+    out_flush();
+}
+# endif
+
+    int
+blink_state_is_inverted(void)
+{
+#ifdef FEAT_TERMRESPONSE
+    return rbm_status.tr_progress == STATUS_GOT
+	&& rcs_status.tr_progress == STATUS_GOT
+		&& initial_cursor_blink != initial_cursor_shape_blink;
+#else
+    return FALSE;
+#endif
+}
+
+/*
+ * "shape": 1 = block, 2 = underline, 3 = vertical bar
+ */
+    void
+term_cursor_shape(int shape, int blink)
+{
+    if (*T_CSH != NUL)
+    {
+	OUT_STR(tgoto((char *)T_CSH, 0, shape * 2 - blink));
+	out_flush();
+    }
+    else
+    {
+	int do_blink = blink;
+
+	// t_SH is empty: try setting just the blink state.
+	// The blink flags are XORed together, if the initial blinking from
+	// style and shape differs, we need to invert the flag here.
+	if (blink_state_is_inverted())
+	    do_blink = !blink;
+
+	if (do_blink && *T_VS != NUL)
+	{
+	    out_str(T_VS);
+	    out_flush();
+	}
+	else if (!do_blink && *T_CVS != NUL)
+	{
+	    out_str(T_CVS);
+	    out_flush();
+	}
+    }
+}
+#endif
+
+/*
+ * Set scrolling region for window 'wp'.
+ * The region starts 'off' lines from the start of the window.
+ * Also set the vertical scroll region for a vertically split window.  Always
+ * the full width of the window, excluding the vertical separator.
+ */
+    void
+scroll_region_set(win_T *wp, int off)
+{
+    OUT_STR(tgoto((char *)T_CS, W_WINROW(wp) + wp->w_height - 1,
+							 W_WINROW(wp) + off));
+    if (*T_CSV != NUL && wp->w_width != Columns)
+	OUT_STR(tgoto((char *)T_CSV, wp->w_wincol + wp->w_width - 1,
+							       wp->w_wincol));
+    screen_start();		    // don't know where cursor is now
+}
+
+/*
+ * Reset scrolling region to the whole screen.
+ */
+    void
+scroll_region_reset(void)
+{
+    OUT_STR(tgoto((char *)T_CS, (int)Rows - 1, 0));
+    if (*T_CSV != NUL)
+	OUT_STR(tgoto((char *)T_CSV, (int)Columns - 1, 0));
+    screen_start();		    // don't know where cursor is now
+}
+
+
+/*
+ * List of terminal codes that are currently recognized.
+ */
+
+static struct termcode
+{
+    char_u  name[2];	    // termcap name of entry
+    char_u  *code;	    // terminal code (in allocated memory)
+    int	    len;	    // STRLEN(code)
+    int	    modlen;	    // length of part before ";*~".
+} *termcodes = NULL;
+
+static int  tc_max_len = 0; // number of entries that termcodes[] can hold
+static int  tc_len = 0;	    // current number of entries in termcodes[]
+
+static int termcode_star(char_u *code, int len);
+
+    void
+clear_termcodes(void)
+{
+    while (tc_len > 0)
+	vim_free(termcodes[--tc_len].code);
+    VIM_CLEAR(termcodes);
+    tc_max_len = 0;
+
+#ifdef HAVE_TGETENT
+    BC = (char *)empty_option;
+    UP = (char *)empty_option;
+    PC = NUL;			// set pad character to NUL
+    ospeed = 0;
+#endif
+
+    need_gather = TRUE;		// need to fill termleader[]
+}
+
+#define ATC_FROM_TERM 55
+
+/*
+ * For xterm we recognize special codes like "ESC[42;*X" and "ESC O*X" that
+ * accept modifiers.
+ * Set "termcodes[idx].modlen".
+ */
+    static void
+adjust_modlen(int idx)
+{
+    termcodes[idx].modlen = 0;
+    int j = termcode_star(termcodes[idx].code, termcodes[idx].len);
+    if (j <= 0)
+	return;
+
+    termcodes[idx].modlen = termcodes[idx].len - 1 - j;
+    // For "CSI[@;X" the "@" is not included in "modlen".
+    if (termcodes[idx].code[termcodes[idx].modlen - 1] == '@')
+	--termcodes[idx].modlen;
+}
+
+/*
+ * Add a new entry for "name[2]" to the list of terminal codes.
+ * Note that "name" may not have a terminating NUL.
+ * The list is kept alphabetical for ":set termcap"
+ * "flags" is TRUE when replacing 7-bit by 8-bit controls is desired.
+ * "flags" can also be ATC_FROM_TERM for got_code_from_term().
+ */
+    void
+add_termcode(char_u *name, char_u *string, int flags)
+{
+    struct termcode *new_tc;
+    int		    i, j;
+    char_u	    *s;
+    int		    len;
+#ifdef FEAT_EVAL
+    char	    *action = "Setting";
+#endif
+
+    if (string == NULL || *string == NUL)
+    {
+	del_termcode(name);
+	return;
+    }
+
+#if defined(MSWIN) && !defined(FEAT_GUI)
+    s = vim_strnsave(string, STRLEN(string) + 1);
+#else
+# ifdef VIMDLL
+    if (!gui.in_use)
+	s = vim_strnsave(string, STRLEN(string) + 1);
+    else
+# endif
+	s = vim_strsave(string);
+#endif
+    if (s == NULL)
+	return;
+
+    // Change leading <Esc>[ to CSI, change <Esc>O to <M-O>.
+    if (flags != 0 && flags != ATC_FROM_TERM && term_7to8bit(string) != 0)
+    {
+	STRMOVE(s, s + 1);
+	s[0] = term_7to8bit(string);
+    }
+
+#if defined(MSWIN) && (!defined(FEAT_GUI) || defined(VIMDLL))
+# ifdef VIMDLL
+    if (!gui.in_use)
+# endif
+    {
+	if (s[0] == K_NUL)
+	{
+	    STRMOVE(s + 1, s);
+	    s[1] = 3;
+	}
+    }
+#endif
+
+    len = (int)STRLEN(s);
+
+    need_gather = TRUE;		// need to fill termleader[]
+
+    /*
+     * need to make space for more entries
+     */
+    if (tc_len == tc_max_len)
+    {
+	tc_max_len += 20;
+	new_tc = ALLOC_MULT(struct termcode, tc_max_len);
+	if (new_tc == NULL)
+	{
+	    tc_max_len -= 20;
+	    vim_free(s);
+	    return;
+	}
+	for (i = 0; i < tc_len; ++i)
+	    new_tc[i] = termcodes[i];
+	vim_free(termcodes);
+	termcodes = new_tc;
+    }
+
+    /*
+     * Look for existing entry with the same name, it is replaced.
+     * Look for an existing entry that is alphabetical higher, the new entry
+     * is inserted in front of it.
+     */
+    for (i = 0; i < tc_len; ++i)
+    {
+	if (termcodes[i].name[0] < name[0])
+	    continue;
+	if (termcodes[i].name[0] == name[0])
+	{
+	    if (termcodes[i].name[1] < name[1])
+		continue;
+	    /*
+	     * Exact match: May replace old code.
+	     */
+	    if (termcodes[i].name[1] == name[1])
+	    {
+		if (flags == ATC_FROM_TERM && (j = termcode_star(
+				    termcodes[i].code, termcodes[i].len)) > 0)
+		{
+		    // Don't replace ESC[123;*X or ESC O*X with another when
+		    // invoked from got_code_from_term().
+		    if (len == termcodes[i].len - j
+			    && STRNCMP(s, termcodes[i].code, len - 1) == 0
+			    && s[len - 1]
+				   == termcodes[i].code[termcodes[i].len - 1])
+		    {
+			// They are equal but for the ";*": don't add it.
+#ifdef FEAT_EVAL
+			ch_log(NULL, "Termcap entry %c%c did not change",
+							     name[0], name[1]);
+#endif
+			vim_free(s);
+			return;
+		    }
+		}
+		else
+		{
+		    // Replace old code.
+#ifdef FEAT_EVAL
+		    ch_log(NULL, "Termcap entry %c%c was: %s",
+					  name[0], name[1], termcodes[i].code);
+#endif
+		    vim_free(termcodes[i].code);
+		    --tc_len;
+		    break;
+		}
+	    }
+	}
+	/*
+	 * Found alphabetical larger entry, move rest to insert new entry
+	 */
+#ifdef FEAT_EVAL
+	action = "Adding";
+#endif
+	for (j = tc_len; j > i; --j)
+	    termcodes[j] = termcodes[j - 1];
+	break;
+    }
+
+#ifdef FEAT_EVAL
+    ch_log(NULL, "%s termcap entry %c%c to %s", action, name[0], name[1], s);
+#endif
+    termcodes[i].name[0] = name[0];
+    termcodes[i].name[1] = name[1];
+    termcodes[i].code = s;
+    termcodes[i].len = len;
+    adjust_modlen(i);
+
+    ++tc_len;
+}
+
+/*
+ * Some function keys may include modifiers, but the terminfo/termcap entries
+ * do not indicate that.  Insert ";*" where we expect modifiers might appear.
+ */
+    static void
+accept_modifiers_for_function_keys(void)
+{
+    regmatch_T regmatch;
+    CLEAR_FIELD(regmatch);
+    regmatch.rm_ic = TRUE;
+    regmatch.regprog = vim_regcomp((char_u *)"^\033[\\d\\+\\~$", RE_MAGIC);
+
+    for (int i = 0; i < tc_len; ++i)
+    {
+	if (regmatch.regprog == NULL)
+	    return;
+
+	// skip PasteStart and PasteEnd
+	if (termcodes[i].name[0] == 'P'
+		&& (termcodes[i].name[1] == 'S' || termcodes[i].name[1] == 'E'))
+	    continue;
+
+	char_u *s = termcodes[i].code;
+	if (s != NULL && vim_regexec(&regmatch, s, (colnr_T)0))
+	{
+	    size_t len = STRLEN(s);
+	    char_u *ns = alloc(len + 3);
+	    if (ns != NULL)
+	    {
+		mch_memmove(ns, s, len - 1);
+		mch_memmove(ns + len - 1, ";*~", 4);
+		vim_free(s);
+		termcodes[i].code = ns;
+		termcodes[i].len += 2;
+		adjust_modlen(i);
+	    }
+	}
+    }
+
+    vim_regfree(regmatch.regprog);
+}
+
+/*
+ * Check termcode "code[len]" for ending in ;*X or *X.
+ * The "X" can be any character.
+ * Return 0 if not found, 2 for ;*X and 1 for *X.
+ */
+    static int
+termcode_star(char_u *code, int len)
+{
+    // Shortest is <M-O>*X.  With ; shortest is <CSI>@;*X
+    if (len >= 3 && code[len - 2] == '*')
+    {
+	if (len >= 5 && code[len - 3] == ';')
+	    return 2;
+	else
+	    return 1;
+    }
+    return 0;
+}
+
+    char_u  *
+find_termcode(char_u *name)
+{
+    int	    i;
+
+    for (i = 0; i < tc_len; ++i)
+	if (termcodes[i].name[0] == name[0] && termcodes[i].name[1] == name[1])
+	    return termcodes[i].code;
+    return NULL;
+}
+
+    char_u *
+get_termcode(int i)
+{
+    if (i >= tc_len)
+	return NULL;
+    return &termcodes[i].name[0];
+}
+
+/*
+ * Returns the length of the terminal code at index 'idx'.
+ */
+    int
+get_termcode_len(int idx)
+{
+    return termcodes[idx].len;
+}
+
+    void
+del_termcode(char_u *name)
+{
+    int	    i;
+
+    if (termcodes == NULL)	// nothing there yet
+	return;
+
+    need_gather = TRUE;		// need to fill termleader[]
+
+    for (i = 0; i < tc_len; ++i)
+	if (termcodes[i].name[0] == name[0] && termcodes[i].name[1] == name[1])
+	{
+	    del_termcode_idx(i);
+	    return;
+	}
+    // not found. Give error message?
+}
+
+    static void
+del_termcode_idx(int idx)
+{
+    int		i;
+
+    vim_free(termcodes[idx].code);
+    --tc_len;
+    for (i = idx; i < tc_len; ++i)
+	termcodes[i] = termcodes[i + 1];
+}
+
+/*
+ * Called when detected that the terminal sends 8-bit codes.
+ * Convert all 7-bit codes to their 8-bit equivalent.
+ */
+    static void
+switch_to_8bit(void)
+{
+    int		i;
+    int		c;
+
+    // Only need to do something when not already using 8-bit codes.
+    if (!term_is_8bit(T_NAME))
+    {
+	for (i = 0; i < tc_len; ++i)
+	{
+	    c = term_7to8bit(termcodes[i].code);
+	    if (c != 0)
+	    {
+		STRMOVE(termcodes[i].code + 1, termcodes[i].code + 2);
+		termcodes[i].code[0] = c;
+	    }
+	}
+	need_gather = TRUE;		// need to fill termleader[]
+    }
+    detected_8bit = TRUE;
+    LOG_TR(("Switching to 8 bit"));
+}
+
+#ifdef CHECK_DOUBLE_CLICK
+static linenr_T orig_topline = 0;
+# ifdef FEAT_DIFF
+static int orig_topfill = 0;
+# endif
+#endif
+#if defined(CHECK_DOUBLE_CLICK) || defined(PROTO)
+/*
+ * Checking for double-clicks ourselves.
+ * "orig_topline" is used to avoid detecting a double-click when the window
+ * contents scrolled (e.g., when 'scrolloff' is non-zero).
+ */
+/*
+ * Set orig_topline.  Used when jumping to another window, so that a double
+ * click still works.
+ */
+    void
+set_mouse_topline(win_T *wp)
+{
+    orig_topline = wp->w_topline;
+# ifdef FEAT_DIFF
+    orig_topfill = wp->w_topfill;
+# endif
+}
+
+/*
+ * Returns TRUE if the top line and top fill of window 'wp' matches the saved
+ * topline and topfill.
+ */
+    int
+is_mouse_topline(win_T *wp)
+{
+    return orig_topline == wp->w_topline
+#ifdef FEAT_DIFF
+	&& orig_topfill == wp->w_topfill
+#endif
+	;
+}
+#endif
+
+/*
+ * If "buf" is NULL put "string[new_slen]" in typebuf; "buflen" is not used.
+ * If "buf" is not NULL put "string[new_slen]" in "buf[bufsize]" and adjust
+ * "buflen".
+ * Remove "slen" bytes.
+ * Returns FAIL for error.
+ */
+    int
+put_string_in_typebuf(
+	int	offset,
+	int	slen,
+	char_u	*string,
+	int	new_slen,
+	char_u	*buf,
+	int	bufsize,
+	int	*buflen)
+{
+    int		extra = new_slen - slen;
+
+    string[new_slen] = NUL;
+    if (buf == NULL)
+    {
+	if (extra < 0)
+	    // remove matched chars, taking care of noremap
+	    del_typebuf(-extra, offset);
+	else if (extra > 0)
+	    // insert the extra space we need
+	    if (ins_typebuf(string + slen, REMAP_YES, offset, FALSE, FALSE)
+								       == FAIL)
+		return FAIL;
+
+	// Careful: del_typebuf() and ins_typebuf() may have reallocated
+	// typebuf.tb_buf[]!
+	mch_memmove(typebuf.tb_buf + typebuf.tb_off + offset, string,
+							     (size_t)new_slen);
+    }
+    else
+    {
+	if (extra < 0)
+	    // remove matched characters
+	    mch_memmove(buf + offset, buf + offset - extra,
+					   (size_t)(*buflen + offset + extra));
+	else if (extra > 0)
+	{
+	    // Insert the extra space we need.  If there is insufficient
+	    // space return -1.
+	    if (*buflen + extra + new_slen >= bufsize)
+		return FAIL;
+	    mch_memmove(buf + offset + extra, buf + offset,
+						   (size_t)(*buflen - offset));
+	}
+	mch_memmove(buf + offset, string, (size_t)new_slen);
+	*buflen = *buflen + extra + new_slen;
+    }
+    return OK;
+}
+
+/*
+ * Decode a modifier number as xterm provides it into MOD_MASK bits.
+ */
+    int
+decode_modifiers(int n)
+{
+    int	    code = n - 1;
+    int	    modifiers = 0;
+
+    if (code & 1)
+	modifiers |= MOD_MASK_SHIFT;
+    if (code & 2)
+	modifiers |= MOD_MASK_ALT;
+    if (code & 4)
+	modifiers |= MOD_MASK_CTRL;
+    if (code & 8)
+	modifiers |= MOD_MASK_META;
+    // Any further modifiers are silently dropped.
+
+    return modifiers;
+}
+
+    static int
+modifiers2keycode(int modifiers, int *key, char_u *string)
+{
+    int new_slen = 0;
+
+    if (modifiers == 0)
+	return 0;
+
+    // Some keys have the modifier included.  Need to handle that here to
+    // make mappings work.  This may result in a special key, such as
+    // K_S_TAB.
+    *key = simplify_key(*key, &modifiers);
+    if (modifiers != 0)
+    {
+	string[new_slen++] = K_SPECIAL;
+	string[new_slen++] = (int)KS_MODIFIER;
+	string[new_slen++] = modifiers;
+    }
+    return new_slen;
+}
+
+/*
+ * Handle a cursor position report.
+ */
+    static void
+handle_u7_response(int *arg, char_u *tp UNUSED, int csi_len UNUSED)
+{
+    if (arg[0] == 2 && arg[1] >= 2)
+    {
+	char *aw = NULL;
+
+	LOG_TR(("Received U7 status: %s", tp));
+	u7_status.tr_progress = STATUS_GOT;
+	did_cursorhold = TRUE;
+	if (arg[1] == 2)
+	    aw = "single";
+	else if (arg[1] == 3)
+	    aw = "double";
+	if (aw != NULL && STRCMP(aw, p_ambw) != 0)
+	{
+	    // Setting the option causes a screen redraw. Do
+	    // that right away if possible, keeping any
+	    // messages.
+	    set_option_value_give_err((char_u *)"ambw", 0L, (char_u *)aw, 0);
+#ifdef DEBUG_TERMRESPONSE
+	    {
+		int r = redraw_asap(UPD_CLEAR);
+
+		log_tr("set 'ambiwidth', redraw_asap(): %d", r);
+	    }
+#else
+	    redraw_asap(UPD_CLEAR);
+#endif
+#ifdef FEAT_EVAL
+	    set_vim_var_string(VV_TERMU7RESP, tp, csi_len);
+#endif
+	}
+    }
+    else if (arg[0] == 3)
+    {
+	int value;
+
+	LOG_TR(("Received compatibility test result: %s", tp));
+	xcc_status.tr_progress = STATUS_GOT;
+
+	// Third row: xterm compatibility test.
+	// If the cursor is on the first column then the terminal can handle
+	// the request for cursor style and blinking.
+	value = arg[1] == 1 ? TPR_YES : TPR_NO;
+	term_props[TPR_CURSOR_STYLE].tpr_status = value;
+	term_props[TPR_CURSOR_BLINK].tpr_status = value;
+    }
+}
+
+/*
+ * Handle a response to T_CRV: {lead}{first}{x};{vers};{y}c
+ * Xterm and alike use '>' for {first}.
+ * Rxvt sends "{lead}?1;2c".
+ */
+    static void
+handle_version_response(int first, int *arg, int argc, char_u *tp)
+{
+    // The xterm version.  It is set to zero when it can't be an actual xterm
+    // version.
+    int version = arg[1];
+
+    LOG_TR(("Received CRV response: %s", tp));
+    crv_status.tr_progress = STATUS_GOT;
+    did_cursorhold = TRUE;
+
+    // Reset terminal properties that are set based on the termresponse.
+    // Mainly useful for tests that send the termresponse multiple times.
+    // For testing all props can be reset.
+    init_term_props(
+#ifdef FEAT_EVAL
+	    reset_term_props_on_termresponse
+#else
+	    FALSE
+#endif
+	    );
+
+    // If this code starts with CSI, you can bet that the
+    // terminal uses 8-bit codes.
+    if (tp[0] == CSI)
+	switch_to_8bit();
+
+    // Screen sends 40500.
+    // rxvt sends its version number: "20703" is 2.7.3.
+    // Ignore it for when the user has set 'term' to xterm,
+    // even though it's an rxvt.
+    if (version > 20000)
+	version = 0;
+
+    // Figure out more if the response is CSI > 99 ; 99 ; 99 c
+    if (first == '>' && argc == 3)
+    {
+	// mintty 2.9.5 sends 77;20905;0c.
+	// (77 is ASCII 'M' for mintty.)
+	if (arg[0] == 77)
+	{
+	    // mintty can do SGR mouse reporting
+	    term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
+	}
+
+#ifdef FEAT_TERMRESPONSE
+	// If xterm version >= 141 try to get termcap codes.  For other
+	// terminals the request should be ignored.
+	if (version >= 141 && p_xtermcodes)
+	{
+	    LOG_TR(("Enable checking for XT codes"));
+	    check_for_codes = TRUE;
+	    need_gather = TRUE;
+	    req_codes_from_term();
+	}
+#endif
+
+	// libvterm sends 0;100;0
+	// Konsole sends 0;115;0 and works the same way
+	if ((version == 100 || version == 115) && arg[0] == 0 && arg[2] == 0)
+	{
+	    // If run from Vim $COLORS is set to the number of
+	    // colors the terminal supports.  Otherwise assume
+	    // 256, libvterm supports even more.
+	    if (mch_getenv((char_u *)"COLORS") == NULL)
+		may_adjust_color_count(256);
+	    // Libvterm can handle SGR mouse reporting.
+	    term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
+	}
+
+	if (version == 95)
+	{
+	    // Mac Terminal.app sends 1;95;0
+	    if (arg[0] == 1 && arg[2] == 0)
+	    {
+		term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
+		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
+	    }
+	    // iTerm2 sends 0;95;0
+	    else if (arg[0] == 0 && arg[2] == 0)
+	    {
+		// iTerm2 can do SGR mouse reporting
+		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
+	    }
+	    // old iTerm2 sends 0;95;
+	    else if (arg[0] == 0 && arg[2] == -1)
+		term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
+	}
+
+	// screen sends 83;40500;0 83 is 'S' in ASCII.
+	if (arg[0] == 83)
+	{
+	    // screen supports SGR mouse codes since 4.7.0
+	    if (arg[1] >= 40700)
+		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
+	    else
+		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_XTERM;
+	}
+
+	// If no recognized terminal has set mouse behavior, assume xterm.
+	if (term_props[TPR_MOUSE].tpr_status == TPR_UNKNOWN)
+	{
+	    // Xterm version 277 supports SGR.
+	    // Xterm version >= 95 supports mouse dragging.
+	    if (version >= 277)
+		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
+	    else if (version >= 95)
+		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_XTERM2;
+	}
+
+	// Detect terminals that set $TERM to something like
+	// "xterm-256color" but are not fully xterm compatible.
+	//
+	// Gnome terminal sends 1;3801;0, 1;4402;0 or 1;2501;0.
+	// Newer Gnome-terminal sends 65;6001;1.
+	// xfce4-terminal sends 1;2802;0.
+	// screen sends 83;40500;0
+	// Assuming any version number over 2500 is not an
+	// xterm (without the limit for rxvt and screen).
+	if (arg[1] >= 2500)
+	    term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
+
+	else if (version == 136 && arg[2] == 0)
+	{
+	    term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
+
+	    // PuTTY sends 0;136;0
+	    if (arg[0] == 0)
+	    {
+		// supports sgr-like mouse reporting.
+		term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
+	    }
+	    // vandyke SecureCRT sends 1;136;0
+	}
+
+	// Konsole sends 0;115;0 - but t_u8 does not actually work, therefore
+	// commented out.
+	// else if (version == 115 && arg[0] == 0 && arg[2] == 0)
+	//     term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
+
+	// Kitty up to 9.x sends 1;400{version};{secondary-version}
+	if (arg[0] == 1 && arg[1] >= 4000 && arg[1] <= 4009)
+	{
+	    term_props[TPR_KITTY].tpr_status = TPR_YES;
+	    term_props[TPR_KITTY].tpr_set_by_termresponse = TRUE;
+
+	    // Kitty can handle SGR mouse reporting.
+	    term_props[TPR_MOUSE].tpr_status = TPR_MOUSE_SGR;
+	}
+
+	// GNU screen sends 83;30600;0, 83;40500;0, etc.
+	// 30600/40500 is a version number of GNU screen. DA2 support is added
+	// on 3.6.  DCS string has a special meaning to GNU screen, but xterm
+	// compatibility checking does not detect GNU screen.
+	if (arg[0] == 83 && arg[1] >= 30600)
+	{
+	    term_props[TPR_CURSOR_STYLE].tpr_status = TPR_NO;
+	    term_props[TPR_CURSOR_BLINK].tpr_status = TPR_NO;
+	}
+
+	// Xterm first responded to this request at patch level
+	// 95, so assume anything below 95 is not xterm and hopefully supports
+	// the underline RGB color sequence.
+	if (version < 95)
+	    term_props[TPR_UNDERLINE_RGB].tpr_status = TPR_YES;
+
+	// Getting the cursor style is only supported properly by xterm since
+	// version 279 (otherwise it returns 0x18).
+	if (version < 279)
+	    term_props[TPR_CURSOR_STYLE].tpr_status = TPR_NO;
+
+	/*
+	 * Take action on the detected properties.
+	 */
+
+	// Unless the underline RGB color is expected to work, disable "t_8u".
+	// It does not work for the real Xterm, it resets the background color.
+	// This may cause some flicker.  Alternative would be to set "t_8u"
+	// here if the terminal is expected to support it, but that might
+	// conflict with what was set in the .vimrc.
+	if (term_props[TPR_UNDERLINE_RGB].tpr_status != TPR_YES
+			&& *T_8U != NUL
+			&& !option_was_set((char_u *)"t_8u"))
+	{
+	    set_string_option_direct((char_u *)"t_8u", -1, (char_u *)"",
+								  OPT_FREE, 0);
+	}
+#ifdef FEAT_TERMRESPONSE
+	if (*T_8U != NUL && write_t_8u_state == MAYBE)
+	    // Did skip writing t_8u, a complete redraw is needed.
+	    redraw_later_clear();
+	write_t_8u_state = OK;  // can output t_8u now
+#endif
+
+	// Only set 'ttymouse' automatically if it was not set
+	// by the user already.
+	if (!option_was_set((char_u *)"ttym")
+		&& (term_props[TPR_MOUSE].tpr_status == TPR_MOUSE_XTERM2
+		    || term_props[TPR_MOUSE].tpr_status == TPR_MOUSE_SGR))
+	{
+	    set_option_value_give_err((char_u *)"ttym", 0L,
+		    term_props[TPR_MOUSE].tpr_status == TPR_MOUSE_SGR
+				    ? (char_u *)"sgr" : (char_u *)"xterm2", 0);
+	}
+
+#ifdef FEAT_TERMRESPONSE
+	int need_flush = FALSE;
+
+	// Only request the cursor style if t_SH and t_RS are
+	// set. Only supported properly by xterm since version
+	// 279 (otherwise it returns 0x18).
+	// Only when getting the cursor style was detected to work.
+	// Not for Terminal.app, it can't handle t_RS, it
+	// echoes the characters to the screen.
+	if (rcs_status.tr_progress == STATUS_GET
+		&& term_props[TPR_CURSOR_STYLE].tpr_status == TPR_YES
+		&& *T_CSH != NUL
+		&& *T_CRS != NUL)
+	{
+	    MAY_WANT_TO_LOG_THIS;
+	    LOG_TR(("Sending cursor style request"));
+	    out_str(T_CRS);
+	    termrequest_sent(&rcs_status);
+	    need_flush = TRUE;
+	}
+
+	// Only request the cursor blink mode if t_RC set. Not
+	// for Gnome terminal, it can't handle t_RC, it
+	// echoes the characters to the screen.
+	// Only when getting the cursor style was detected to work.
+	if (rbm_status.tr_progress == STATUS_GET
+		&& term_props[TPR_CURSOR_BLINK].tpr_status == TPR_YES
+		&& *T_CRC != NUL)
+	{
+	    MAY_WANT_TO_LOG_THIS;
+	    LOG_TR(("Sending cursor blink mode request"));
+	    out_str(T_CRC);
+	    termrequest_sent(&rbm_status);
+	    need_flush = TRUE;
+	}
+
+	if (need_flush)
+	    out_flush();
+#endif
+    }
+}
+
+/*
+ * Add "key" to "buf" and return the number of bytes used.
+ * Handles special keys and multi-byte characters.
+ */
+    static int
+add_key_to_buf(int key, char_u *buf)
+{
+    int idx = 0;
+
+    if (IS_SPECIAL(key))
+    {
+	buf[idx++] = K_SPECIAL;
+	buf[idx++] = KEY2TERMCAP0(key);
+	buf[idx++] = KEY2TERMCAP1(key);
+    }
+    else if (has_mbyte)
+	idx += (*mb_char2bytes)(key, buf + idx);
+    else
+	buf[idx++] = key;
+    return idx;
+}
+
+/*
+ * Shared between handle_key_with_modifier() and handle_csi_function_key().
+ */
+    static int
+put_key_modifiers_in_typebuf(
+	int	key_arg,
+	int	modifiers_arg,
+	int	csi_len,
+	int	offset,
+	char_u	*buf,
+	int	bufsize,
+	int	*buflen)
+{
+    int key = key_arg;
+    int modifiers = modifiers_arg;
+
+    // Some keys need adjustment when the Ctrl modifier is used.
+    key = may_adjust_key_for_ctrl(modifiers, key);
+
+    // May remove the shift modifier if it's already included in the key.
+    modifiers = may_remove_shift_modifier(modifiers, key);
+
+    // Produce modifiers with K_SPECIAL KS_MODIFIER {mod}
+    char_u string[MAX_KEY_CODE_LEN + 1];
+    int new_slen = modifiers2keycode(modifiers, &key, string);
+
+    // Add the bytes for the key.
+    new_slen += add_key_to_buf(key, string + new_slen);
+
+    string[new_slen] = NUL;
+    if (put_string_in_typebuf(offset, csi_len, string, new_slen,
+						 buf, bufsize, buflen) == FAIL)
+	return -1;
+    return new_slen - csi_len + offset;
+}
+
+/*
+ * Handle a sequence with key and modifier, one of:
+ *	{lead}27;{modifier};{key}~
+ *	{lead}{key};{modifier}u
+ * Returns the difference in length.
+ */
+    static int
+handle_key_with_modifier(
+	int	*arg,
+	int	trail,
+	int	csi_len,
+	int	offset,
+	char_u	*buf,
+	int	bufsize,
+	int	*buflen)
+{
+    // Only set seenModifyOtherKeys for the "{lead}27;" code to avoid setting
+    // it for terminals using the kitty keyboard protocol.  Xterm sends
+    // the form ending in "u" when the formatOtherKeys resource is set.  We do
+    // not support this.
+    //
+    // Do not set seenModifyOtherKeys if there was a positive response at any
+    // time from requesting the kitty keyboard protocol state, these are not
+    // expected to support modifyOtherKeys level 2.
+    //
+    // Do not set seenModifyOtherKeys for kitty, it does send some sequences
+    // like this but does not have the modifyOtherKeys feature.
+    if (trail != 'u'
+	    && (kitty_protocol_state == KKPS_INITIAL
+		|| kitty_protocol_state == KKPS_OFF
+		|| kitty_protocol_state == KKPS_AFTER_T_TE)
+	    && term_props[TPR_KITTY].tpr_status != TPR_YES)
+    {
+#ifdef FEAT_EVAL
+	ch_log(NULL, "setting seenModifyOtherKeys to TRUE");
+#endif
+	seenModifyOtherKeys = TRUE;
+    }
+
+    int key = trail == 'u' ? arg[0] : arg[2];
+    int modifiers = decode_modifiers(arg[1]);
+
+    // Some terminals do not apply the Shift modifier to the key.  To make
+    // mappings consistent we do it here.  TODO: support more keys.
+    if ((modifiers & MOD_MASK_SHIFT) && key >= 'a' && key <= 'z')
+	key += 'A' - 'a';
+
+    // Putting Esc in the buffer creates ambiguity, it can be the start of an
+    // escape sequence.  Use K_ESC to avoid that.
+    if (key == ESC)
+	key = K_ESC;
+
+    return put_key_modifiers_in_typebuf(key, modifiers,
+					csi_len, offset, buf, bufsize, buflen);
+}
+
+/*
+ * Handle a sequence with key without a modifier:
+ *	{lead}{key}u
+ * Returns the difference in length.
+ */
+    static int
+handle_key_without_modifier(
+	int	*arg,
+	int	csi_len,
+	int	offset,
+	char_u	*buf,
+	int	bufsize,
+	int	*buflen)
+{
+    char_u  string[MAX_KEY_CODE_LEN + 1];
+    int	    new_slen;
+
+    if (arg[0] == ESC)
+    {
+	// Putting Esc in the buffer creates ambiguity, it can be the start of
+	// an escape sequence.  Use K_ESC to avoid that.
+	string[0] = K_SPECIAL;
+	string[1] = KS_EXTRA;
+	string[2] = KE_ESC;
+	new_slen = 3;
+    }
+    else
+	new_slen = add_key_to_buf(arg[0], string);
+
+    if (put_string_in_typebuf(offset, csi_len, string, new_slen,
+						 buf, bufsize, buflen) == FAIL)
+	return -1;
+    return new_slen - csi_len + offset;
+}
+
+/*
+ * CSI function key without or with modifiers:
+ *	{lead}[ABCDEFHPQRS]
+ *	{lead}1;{modifier}[ABCDEFHPQRS]
+ * Returns zero when nog recognized, a positive number when recognized.
+ */
+    static int
+handle_csi_function_key(
+	int	argc,
+	int	*arg,
+	int	trail,
+	int	csi_len,
+	char_u	*key_name,
+	int	offset,
+	char_u  *buf,
+	int	bufsize,
+	int	*buflen)
+{
+    key_name[0] = 'k';
+    switch (trail)
+    {
+	case 'A': key_name[1] = 'u'; break;  // K_UP
+	case 'B': key_name[1] = 'd'; break;  // K_DOWN
+	case 'C': key_name[1] = 'r'; break;  // K_RIGHT
+	case 'D': key_name[1] = 'l'; break;  // K_LEFT
+
+	// case 'E': keypad BEGIN - not supported
+	case 'F': key_name[0] = '@'; key_name[1] = '7'; break;  // K_END
+	case 'H': key_name[1] = 'h'; break;  // K_HOME
+
+	case 'P': key_name[1] = '1'; break;  // K_F1
+	case 'Q': key_name[1] = '2'; break;  // K_F2
+	case 'R': key_name[1] = '3'; break;  // K_F3
+	case 'S': key_name[1] = '4'; break;  // K_F4
+
+	default: return 0;  // not recognized
+    }
+
+    int key = TERMCAP2KEY(key_name[0], key_name[1]);
+    int modifiers = argc == 2 ? decode_modifiers(arg[1]) : 0;
+    put_key_modifiers_in_typebuf(key, modifiers,
+					csi_len, offset, buf, bufsize, buflen);
+    return csi_len;
+}
+
+/*
+ * Handle a CSI escape sequence.
+ * - Xterm version string.
+ *
+ * - Response to XTQMODKEYS: "{lead} > 4 ; Pv m".
+ *
+ * - Cursor position report: {lead}{row};{col}R
+ *   The final byte must be 'R'. It is used for checking the
+ *   ambiguous-width character state.
+ *
+ * - window position reply: {lead}3;{x};{y}t
+ *
+ * - key with modifiers when modifyOtherKeys is enabled or the Kitty keyboard
+ *   protocol is used:
+ *	    {lead}27;{modifier};{key}~
+ *	    {lead}{key};{modifier}u
+ *
+ * - function key with or without modifiers:
+ *	{lead}[ABCDEFHPQRS]
+ *	{lead}1;{modifier}[ABCDEFHPQRS]
+ *
+ * Return 0 for no match, -1 for partial match, > 0 for full match.
+ */
+    static int
+handle_csi(
+	char_u	*tp,
+	int	len,
+	char_u	*argp,
+	int	offset,
+	char_u  *buf,
+	int	bufsize,
+	int	*buflen,
+	char_u	*key_name,
+	int	*slen)
+{
+    int		first = -1;  // optional char right after {lead}
+    int		trail;	     // char that ends CSI sequence
+    int		arg[3] = {-1, -1, -1};	// argument numbers
+    int		argc = 0;		// number of arguments
+    char_u	*ap = argp;
+    int		csi_len;
+
+    // Check for non-digit after CSI.
+    if (!VIM_ISDIGIT(*ap))
+	first = *ap++;
+
+    if (first >= 'A' && first <= 'Z')
+    {
+	// If "first" is in [ABCDEFHPQRS] then it is actually the "trail" and
+	// no argument follows.
+	trail = first;
+	first = -1;
+	--ap;
+    }
+    else
+    {
+	// Find up to three argument numbers.
+	for (argc = 0; argc < 3; )
+	{
+	    if (ap >= tp + len)
+		return -1;
+	    if (*ap == ';')
+		arg[argc++] = -1;  // omitted number
+	    else if (VIM_ISDIGIT(*ap))
+	    {
+		arg[argc] = 0;
+		for (;;)
+		{
+		    if (ap >= tp + len)
+			return -1;
+		    if (!VIM_ISDIGIT(*ap))
+			break;
+		    arg[argc] = arg[argc] * 10 + (*ap - '0');
+		    ++ap;
+		}
+		++argc;
+	    }
+	    if (*ap == ';')
+		++ap;
+	    else
+		break;
+	}
+
+	// mrxvt has been reported to have "+" in the version. Assume
+	// the escape sequence ends with a letter or one of "{|}~".
+	while (ap < tp + len
+		&& !(*ap >= '{' && *ap <= '~')
+		&& !ASCII_ISALPHA(*ap))
+	    ++ap;
+	if (ap >= tp + len)
+	    return -1;
+	trail = *ap;
+    }
+
+    csi_len = (int)(ap - tp) + 1;
+
+    // Response to XTQMODKEYS: "CSI > 4 ; Pv m" where Pv indicates the
+    // modifyOtherKeys level.  Drop similar responses.
+    if (first == '>' && (argc == 1 || argc == 2) && trail == 'm')
+    {
+	if (arg[0] == 4 && argc == 2)
+	    modify_otherkeys_state = arg[1] == 2 ? MOKS_ENABLED : MOKS_OFF;
+
+	key_name[0] = (int)KS_EXTRA;
+	key_name[1] = (int)KE_IGNORE;
+	*slen = csi_len;
+    }
+
+    // Function key starting with CSI:
+    //	{lead}[ABCDEFHPQRS]
+    //	{lead}1;{modifier}[ABCDEFHPQRS]
+    else if (first == -1 && ASCII_ISUPPER(trail)
+	    && (argc == 0 || (argc == 2 && arg[0] == 1)))
+    {
+	int res = handle_csi_function_key(argc, arg, trail,
+			      csi_len, key_name, offset, buf, bufsize, buflen);
+	return res <= 0 ? res : len + res;
+    }
+
+    // Cursor position report: {lead}{row};{col}R
+    // Eat it when there are 2 arguments and it ends in 'R'.
+    // Also when u7_status is not "sent", it may be from a previous Vim that
+    // just exited.  But not for <S-F3>, it sends something similar, check for
+    // row and column to make sense.
+    else if (first == -1 && argc == 2 && trail == 'R')
+    {
+	handle_u7_response(arg, tp, csi_len);
+
+	key_name[0] = (int)KS_EXTRA;
+	key_name[1] = (int)KE_IGNORE;
+	*slen = csi_len;
+    }
+
+    // Version string: Eat it when there is at least one digit and
+    // it ends in 'c'
+    else if (*T_CRV != NUL && ap > argp + 1 && trail == 'c')
+    {
+	handle_version_response(first, arg, argc, tp);
+
+	*slen = csi_len;
+#ifdef FEAT_EVAL
+	set_vim_var_string(VV_TERMRESPONSE, tp, *slen);
+#endif
+	apply_autocmds(EVENT_TERMRESPONSE,
+					NULL, NULL, FALSE, curbuf);
+	key_name[0] = (int)KS_EXTRA;
+	key_name[1] = (int)KE_IGNORE;
+    }
+
+#ifdef FEAT_TERMRESPONSE
+    // Check blinking cursor from xterm:
+    // {lead}?12;1$y       set
+    // {lead}?12;2$y       not set
+    //
+    // {lead} can be <Esc>[ or CSI
+    else if (rbm_status.tr_progress == STATUS_SENT
+	    && first == '?'
+	    && ap == argp + 6
+	    && arg[0] == 12
+	    && ap[-1] == '$'
+	    && trail == 'y')
+    {
+	initial_cursor_blink = (arg[1] == '1');
+	rbm_status.tr_progress = STATUS_GOT;
+	LOG_TR(("Received cursor blinking mode response: %s", tp));
+	key_name[0] = (int)KS_EXTRA;
+	key_name[1] = (int)KE_IGNORE;
+	*slen = csi_len;
+# ifdef FEAT_EVAL
+	set_vim_var_string(VV_TERMBLINKRESP, tp, *slen);
+# endif
+    }
+#endif
+
+    // Kitty keyboard protocol status response: CSI ? flags u
+    else if (first == '?' && argc == 1 && trail == 'u')
+    {
+	// The protocol has various "progressive enhancement flags" values, but
+	// we only check for zero and non-zero here.
+	if (arg[0] == '0')
+	{
+	    kitty_protocol_state = KKPS_OFF;
+	}
+	else
+	{
+	    kitty_protocol_state = KKPS_ENABLED;
+
+	    // Reset seenModifyOtherKeys just in case some key combination has
+	    // been seen that set it before we get the status response.
+#ifdef FEAT_EVAL
+	    ch_log(NULL, "setting seenModifyOtherKeys to FALSE");
+#endif
+	    seenModifyOtherKeys = FALSE;
+	}
+
+	key_name[0] = (int)KS_EXTRA;
+	key_name[1] = (int)KE_IGNORE;
+	*slen = csi_len;
+    }
+
+#ifdef FEAT_TERMRESPONSE
+    // Check for a window position response from the terminal:
+    //       {lead}3;{x};{y}t
+    else if (did_request_winpos && argc == 3 && arg[0] == 3
+						   && trail == 't')
+    {
+	winpos_x = arg[1];
+	winpos_y = arg[2];
+	// got finished code: consume it
+	key_name[0] = (int)KS_EXTRA;
+	key_name[1] = (int)KE_IGNORE;
+	*slen = csi_len;
+
+	if (--did_request_winpos <= 0)
+	    winpos_status.tr_progress = STATUS_GOT;
+    }
+#endif
+
+    // Key with modifier:
+    //	{lead}27;{modifier};{key}~
+    //	{lead}{key};{modifier}u
+    // Even though we only handle four modifiers and the {modifier} value
+    // should be 16 or lower, we accept all modifier values to avoid the raw
+    // sequence to be passed through.
+    else if ((arg[0] == 27 && argc == 3 && trail == '~')
+		|| (argc == 2 && trail == 'u'))
+    {
+	return len + handle_key_with_modifier(arg, trail,
+					csi_len, offset, buf, bufsize, buflen);
+    }
+
+    // Key without modifier (Kitty sends this for Esc):
+    //	{lead}{key}u
+    else if (argc == 1 && trail == 'u')
+    {
+	return len + handle_key_without_modifier(arg,
+			    csi_len, offset, buf, bufsize, buflen);
+    }
+
+    // else: Unknown CSI sequence.  We could drop it, but then the
+    // user can't create a map for it.
+    return 0;
+}
+
+/*
+ * Handle an OSC sequence, fore/background color response from the terminal:
+ *
+ *       {lead}{code};rgb:{rrrr}/{gggg}/{bbbb}{tail}
+ * or    {lead}{code};rgb:{rr}/{gg}/{bb}{tail}
+ *
+ * {code} is 10 for foreground, 11 for background
+ * {lead} can be <Esc>] or OSC
+ * {tail} can be '\007', <Esc>\ or STERM.
+ *
+ * Consume any code that starts with "{lead}11;", it's also
+ * possible that "rgba" is following.
+ */
+    static int
+handle_osc(char_u *tp, char_u *argp, int len, char_u *key_name, int *slen)
+{
+    int		i, j;
+
+    j = 1 + (tp[0] == ESC);
+    if (len >= j + 3 && (argp[0] != '1'
+			     || (argp[1] != '1' && argp[1] != '0')
+			     || argp[2] != ';'))
+	i = 0; // no match
+    else
+	for (i = j; i < len; ++i)
+	    if (tp[i] == '\007' || (tp[0] == OSC ? tp[i] == STERM
+			: (tp[i] == ESC && i + 1 < len && tp[i + 1] == '\\')))
+	    {
+		int is_bg = argp[1] == '1';
+		int is_4digit = i - j >= 21 && tp[j + 11] == '/'
+						  && tp[j + 16] == '/';
+
+		if (i - j >= 15 && STRNCMP(tp + j + 3, "rgb:", 4) == 0
+			    && (is_4digit
+				   || (tp[j + 9] == '/' && tp[j + 12] == '/')))
+		{
+		    char_u *tp_r = tp + j + 7;
+		    char_u *tp_g = tp + j + (is_4digit ? 12 : 10);
+		    char_u *tp_b = tp + j + (is_4digit ? 17 : 13);
+#if defined(FEAT_TERMRESPONSE) && defined(FEAT_TERMINAL)
+		    int rval, gval, bval;
+
+		    rval = hexhex2nr(tp_r);
+		    gval = hexhex2nr(tp_b);
+		    bval = hexhex2nr(tp_g);
+#endif
+		    if (is_bg)
+		    {
+			char *new_bg_val = (3 * '6' < *tp_r + *tp_g +
+					     *tp_b) ? "light" : "dark";
+
+			LOG_TR(("Received RBG response: %s", tp));
+#ifdef FEAT_TERMRESPONSE
+			rbg_status.tr_progress = STATUS_GOT;
+# ifdef FEAT_TERMINAL
+			bg_r = rval;
+			bg_g = gval;
+			bg_b = bval;
+# endif
+#endif
+			if (!option_was_set((char_u *)"bg")
+				      && STRCMP(p_bg, new_bg_val) != 0)
+			{
+			    // value differs, apply it
+			    set_option_value_give_err((char_u *)"bg",
+						  0L, (char_u *)new_bg_val, 0);
+			    reset_option_was_set((char_u *)"bg");
+			    redraw_asap(UPD_CLEAR);
+			}
+		    }
+#if defined(FEAT_TERMRESPONSE) && defined(FEAT_TERMINAL)
+		    else
+		    {
+			LOG_TR(("Received RFG response: %s", tp));
+			rfg_status.tr_progress = STATUS_GOT;
+			fg_r = rval;
+			fg_g = gval;
+			fg_b = bval;
+		    }
+#endif
+		}
+
+		// got finished code: consume it
+		key_name[0] = (int)KS_EXTRA;
+		key_name[1] = (int)KE_IGNORE;
+		*slen = i + 1 + (tp[i] == ESC);
+#ifdef FEAT_EVAL
+		set_vim_var_string(is_bg ? VV_TERMRBGRESP
+						  : VV_TERMRFGRESP, tp, *slen);
+#endif
+		break;
+	    }
+    if (i == len)
+    {
+	LOG_TR(("not enough characters for RB"));
+	return FAIL;
+    }
+    return OK;
+}
+
+/*
+ * Check for key code response from xterm:
+ * {lead}{flag}+r<hex bytes><{tail}
+ *
+ * {lead} can be <Esc>P or DCS
+ * {flag} can be '0' or '1'
+ * {tail} can be Esc>\ or STERM
+ *
+ * Check for resource response from xterm (and drop it):
+ * {lead}{flag}+R<hex bytes>=<value>{tail}
+ *
+ * Check for cursor shape response from xterm:
+ * {lead}1$r<digit> q{tail}
+ *
+ * {lead} can be <Esc>P or DCS
+ * {tail} can be <Esc>\ or STERM
+ *
+ * Consume any code that starts with "{lead}.+r" or "{lead}.$r".
+ */
+    static int
+handle_dcs(char_u *tp, char_u *argp, int len, char_u *key_name, int *slen)
+{
+    int i, j;
+
+    j = 1 + (tp[0] == ESC);
+    if (len < j + 3)
+	i = len; // need more chars
+    else if ((argp[1] != '+' && argp[1] != '$')
+	    || (argp[2] != 'r' && argp[2] != 'R'))
+	i = 0; // no match
+    else if (argp[1] == '+')
+	// key code response
+	for (i = j; i < len; ++i)
+	{
+	    if ((tp[i] == ESC && i + 1 < len && tp[i + 1] == '\\')
+		    || tp[i] == STERM)
+	    {
+#ifdef FEAT_TERMRESPONSE
+		// handle a key code response, drop a resource response
+		if (i - j >= 3 && argp[2] == 'r')
+		    got_code_from_term(tp + j, i);
+#endif
+		key_name[0] = (int)KS_EXTRA;
+		key_name[1] = (int)KE_IGNORE;
+		*slen = i + 1 + (tp[i] == ESC);
+		break;
+	    }
+	}
+    else
+    {
+	// Probably the cursor shape response.  Make sure that "i"
+	// is equal to "len" when there are not sufficient
+	// characters.
+	for (i = j + 3; i < len; ++i)
+	{
+	    if (i - j == 3 && !isdigit(tp[i]))
+		break;
+	    if (i - j == 4 && tp[i] != ' ')
+		break;
+	    if (i - j == 5 && tp[i] != 'q')
+		break;
+	    if (i - j == 6 && tp[i] != ESC && tp[i] != STERM)
+		break;
+	    if ((i - j == 6 && tp[i] == STERM)
+		    || (i - j == 7 && tp[i] == '\\'))
+	    {
+#ifdef FEAT_TERMRESPONSE
+		int number = argp[3] - '0';
+
+		// 0, 1 = block blink, 2 = block
+		// 3 = underline blink, 4 = underline
+		// 5 = vertical bar blink, 6 = vertical bar
+		number = number == 0 ? 1 : number;
+		initial_cursor_shape = (number + 1) / 2;
+		// The blink flag is actually inverted, compared to
+		// the value set with T_SH.
+		initial_cursor_shape_blink =
+				       (number & 1) ? FALSE : TRUE;
+		rcs_status.tr_progress = STATUS_GOT;
+#endif
+		LOG_TR(("Received cursor shape response: %s", tp));
+
+		key_name[0] = (int)KS_EXTRA;
+		key_name[1] = (int)KE_IGNORE;
+		*slen = i + 1;
+#ifdef FEAT_EVAL
+		set_vim_var_string(VV_TERMSTYLERESP, tp, *slen);
+#endif
+		break;
+	    }
+	}
+    }
+
+    if (i == len)
+    {
+	// These codes arrive many together, each code can be
+	// truncated at any point.
+	LOG_TR(("not enough characters for XT"));
+	return FAIL;
+    }
+    return OK;
+}
+
+/*
+ * Check if typebuf.tb_buf[] contains a terminal key code.
+ * Check from typebuf.tb_buf[typebuf.tb_off] to typebuf.tb_buf[typebuf.tb_off
+ * + "max_offset"].
+ * Return 0 for no match, -1 for partial match, > 0 for full match.
+ * Return KEYLEN_REMOVED when a key code was deleted.
+ * With a match, the match is removed, the replacement code is inserted in
+ * typebuf.tb_buf[] and the number of characters in typebuf.tb_buf[] is
+ * returned.
+ * When "buf" is not NULL, buf[bufsize] is used instead of typebuf.tb_buf[].
+ * "buflen" is then the length of the string in buf[] and is updated for
+ * inserts and deletes.
+ */
+    int
+check_termcode(
+    int		max_offset,
+    char_u	*buf,
+    int		bufsize,
+    int		*buflen)
+{
+    char_u	*tp;
+    char_u	*p;
+    int		slen = 0;	// init for GCC
+    int		modslen;
+    int		len;
+    int		retval = 0;
+    int		offset;
+    char_u	key_name[2];
+    int		modifiers;
+    char_u	*modifiers_start = NULL;
+    int		key;
+    int		new_slen;   // Length of what will replace the termcode
+    char_u	string[MAX_KEY_CODE_LEN + 1];
+    int		i, j;
+    int		idx = 0;
+    int		cpo_koffset;
+
+    cpo_koffset = (vim_strchr(p_cpo, CPO_KOFFSET) != NULL);
+
+    /*
+     * Speed up the checks for terminal codes by gathering all first bytes
+     * used in termleader[].  Often this is just a single <Esc>.
+     */
+    if (need_gather)
+	gather_termleader();
+
+    /*
+     * Check at several positions in typebuf.tb_buf[], to catch something like
+     * "x<Up>" that can be mapped. Stop at max_offset, because characters
+     * after that cannot be used for mapping, and with @r commands
+     * typebuf.tb_buf[] can become very long.
+     * This is used often, KEEP IT FAST!
+     */
+    for (offset = 0; offset < max_offset; ++offset)
+    {
+	if (buf == NULL)
+	{
+	    if (offset >= typebuf.tb_len)
+		break;
+	    tp = typebuf.tb_buf + typebuf.tb_off + offset;
+	    len = typebuf.tb_len - offset;	// length of the input
+	}
+	else
+	{
+	    if (offset >= *buflen)
+		break;
+	    tp = buf + offset;
+	    len = *buflen - offset;
+	}
+
+	/*
+	 * Don't check characters after K_SPECIAL, those are already
+	 * translated terminal chars (avoid translating ~@^Hx).
+	 */
+	if (*tp == K_SPECIAL)
+	{
+	    offset += 2;	// there are always 2 extra characters
+	    continue;
+	}
+
+	/*
+	 * Skip this position if the character does not appear as the first
+	 * character in term_strings. This speeds up a lot, since most
+	 * termcodes start with the same character (ESC or CSI).
+	 */
+	i = *tp;
+	for (p = termleader; *p && *p != i; ++p)
+	    ;
+	if (*p == NUL)
+	    continue;
+
+	/*
+	 * Skip this position if p_ek is not set and tp[0] is an ESC and we
+	 * are in Insert mode.
+	 */
+	if (*tp == ESC && !p_ek && (State & MODE_INSERT))
+	    continue;
+
+	tp[len] = NUL;
+	key_name[0] = NUL;	// no key name found yet
+	key_name[1] = NUL;	// no key name found yet
+	modifiers = 0;		// no modifiers yet
+
+#ifdef FEAT_GUI
+	if (gui.in_use)
+	{
+	    /*
+	     * GUI special key codes are all of the form [CSI xx].
+	     */
+	    if (*tp == CSI)	    // Special key from GUI
+	    {
+		if (len < 3)
+		    return -1;	    // Shouldn't happen
+		slen = 3;
+		key_name[0] = tp[1];
+		key_name[1] = tp[2];
+	    }
+	}
+	else
+#endif // FEAT_GUI
+#ifdef MSWIN
+	    if (len >= 3 && tp[0] == CSI && tp[1] == KS_EXTRA
+		    && (tp[2] == KE_MOUSEUP
+			|| tp[2] == KE_MOUSEDOWN
+			|| tp[2] == KE_MOUSELEFT
+			|| tp[2] == KE_MOUSERIGHT))
+	{
+	    // MS-Windows console sends mouse scroll events encoded:
+	    // - CSI
+	    // - KS_EXTRA
+	    // - {KE_MOUSE[UP|DOWN|LEFT|RIGHT]}
+	    slen = 3;
+	    key_name[0] = tp[1];
+	    key_name[1] = tp[2];
+	}
+	else
+#endif
+	{
+	    int  mouse_index_found = -1;
+
+	    for (idx = 0; idx < tc_len; ++idx)
+	    {
+		/*
+		 * Ignore the entry if we are not at the start of
+		 * typebuf.tb_buf[]
+		 * and there are not enough characters to make a match.
+		 * But only when the 'K' flag is in 'cpoptions'.
+		 */
+		slen = termcodes[idx].len;
+		modifiers_start = NULL;
+		if (cpo_koffset && offset && len < slen)
+		    continue;
+		if (STRNCMP(termcodes[idx].code, tp,
+				     (size_t)(slen > len ? len : slen)) == 0)
+		{
+		    int	    looks_like_mouse_start = FALSE;
+
+		    if (len < slen)		// got a partial sequence
+			return -1;		// need to get more chars
+
+		    /*
+		     * When found a keypad key, check if there is another key
+		     * that matches and use that one.  This makes <Home> to be
+		     * found instead of <kHome> when they produce the same
+		     * key code.
+		     */
+		    if (termcodes[idx].name[0] == 'K'
+				       && VIM_ISDIGIT(termcodes[idx].name[1]))
+		    {
+			for (j = idx + 1; j < tc_len; ++j)
+			    if (termcodes[j].len == slen &&
+				    STRNCMP(termcodes[idx].code,
+					    termcodes[j].code, slen) == 0)
+			    {
+				idx = j;
+				break;
+			    }
+		    }
+
+		    if (slen == 2 && len > 2
+			    && termcodes[idx].code[0] == ESC
+			    && termcodes[idx].code[1] == '[')
+		    {
+			// The mouse termcode "ESC [" is also the prefix of
+			// "ESC [ I" (focus gained) and other keys.  Check some
+			// more bytes to find out.
+			if (!isdigit(tp[2]))
+			{
+			    // ESC [ without number following: Only use it when
+			    // there is no other match.
+			    looks_like_mouse_start = TRUE;
+			}
+			else if (termcodes[idx].name[0] == KS_DEC_MOUSE)
+			{
+			    char_u  *nr = tp + 2;
+			    int	    count = 0;
+
+			    // If a digit is following it could be a key with
+			    // modifier, e.g., ESC [ 1;2P.  Can be confused
+			    // with DEC_MOUSE, which requires four numbers
+			    // following.  If not then it can't be a DEC_MOUSE
+			    // code.
+			    for (;;)
+			    {
+				++count;
+				(void)getdigits(&nr);
+				if (nr >= tp + len)
+				    return -1;	// partial sequence
+				if (*nr != ';')
+				    break;
+				++nr;
+				if (nr >= tp + len)
+				    return -1;	// partial sequence
+			    }
+			    if (count < 4)
+				continue;	// no match
+			}
+		    }
+		    if (looks_like_mouse_start)
+		    {
+			// Only use it when there is no other match.
+			if (mouse_index_found < 0)
+			    mouse_index_found = idx;
+		    }
+		    else
+		    {
+			key_name[0] = termcodes[idx].name[0];
+			key_name[1] = termcodes[idx].name[1];
+			break;
+		    }
+		}
+
+		/*
+		 * Check for code with modifier, like xterm uses:
+		 * <Esc>[123;*X  (modslen == slen - 3)
+		 * <Esc>[@;*X    (matches <Esc>[X and <Esc>[1;9X )
+		 * Also <Esc>O*X and <M-O>*X (modslen == slen - 2).
+		 * When there is a modifier the * matches a number.
+		 * When there is no modifier the ;* or * is omitted.
+		 */
+		if (termcodes[idx].modlen > 0 && mouse_index_found < 0)
+		{
+		    modslen = termcodes[idx].modlen;
+		    if (cpo_koffset && offset && len < modslen)
+			continue;
+		    if (STRNCMP(termcodes[idx].code, tp,
+				(size_t)(modslen > len ? len : modslen)) == 0)
+		    {
+			int	    n;
+
+			if (len <= modslen)	// got a partial sequence
+			    return -1;		// need to get more chars
+
+			if (tp[modslen] == termcodes[idx].code[slen - 1])
+			    // no modifiers
+			    slen = modslen + 1;
+			else if (tp[modslen] != ';' && modslen == slen - 3)
+			    // no match for "code;*X" with "code;"
+			    continue;
+			else if (termcodes[idx].code[modslen] == '@'
+					 && (tp[modslen] != '1'
+						    || tp[modslen + 1] != ';'))
+			    // no match for "<Esc>[@" with "<Esc>[1;"
+			    continue;
+			else
+			{
+			    // Skip over the digits, the final char must
+			    // follow. URXVT can use a negative value, thus
+			    // also accept '-'.
+			    for (j = slen - 2; j < len && (isdigit(tp[j])
+				       || tp[j] == '-' || tp[j] == ';'); ++j)
+				;
+			    ++j;
+			    if (len < j)	// got a partial sequence
+				return -1;	// need to get more chars
+			    if (tp[j - 1] != termcodes[idx].code[slen - 1])
+				continue;	// no match
+
+			    modifiers_start = tp + slen - 2;
+
+			    // Match!  Convert modifier bits.
+			    n = atoi((char *)modifiers_start);
+			    modifiers |= decode_modifiers(n);
+
+			    slen = j;
+			}
+			key_name[0] = termcodes[idx].name[0];
+			key_name[1] = termcodes[idx].name[1];
+			break;
+		    }
+		}
+	    }
+	    if (idx == tc_len && mouse_index_found >= 0)
+	    {
+		key_name[0] = termcodes[mouse_index_found].name[0];
+		key_name[1] = termcodes[mouse_index_found].name[1];
+	    }
+	}
+
+	if (key_name[0] == NUL
+	    // Mouse codes of DEC and pterm start with <ESC>[.  When
+	    // detecting the start of these mouse codes they might as well be
+	    // another key code or terminal response.
+#ifdef FEAT_MOUSE_DEC
+	    || key_name[0] == KS_DEC_MOUSE
+#endif
+#ifdef FEAT_MOUSE_PTERM
+	    || key_name[0] == KS_PTERM_MOUSE
+#endif
+	   )
+	{
+	    char_u *argp = tp[0] == ESC ? tp + 2 : tp + 1;
+
+	    /*
+	     * Check for responses from the terminal starting with {lead}:
+	     * "<Esc>[" or CSI followed by [0-9>?].
+	     * Also for function keys without a modifier:
+	     * "<Esc>[" or CSI followed by [ABCDEFHPQRS].
+	     *
+	     * - Xterm version string: {lead}>{x};{vers};{y}c
+	     *   Also eat other possible responses to t_RV, rxvt returns
+	     *   "{lead}?1;2c".
+	     *
+	     * - Response to XTQMODKEYS: "{lead} > 4 ; Pv m".
+	     *
+	     * - Cursor position report: {lead}{row};{col}R
+	     *   The final byte must be 'R'. It is used for checking the
+	     *   ambiguous-width character state.
+	     *
+	     * - window position reply: {lead}3;{x};{y}t
+	     *
+	     * - key with modifiers when modifyOtherKeys is enabled:
+	     *	    {lead}27;{modifier};{key}~
+	     *	    {lead}{key};{modifier}u
+	     */
+	    if (((tp[0] == ESC && len >= 3 && tp[1] == '[')
+			|| (tp[0] == CSI && len >= 2))
+		    && vim_strchr((char_u *)"0123456789>?ABCDEFHPQRS",
+								*argp) != NULL)
+	    {
+		int resp = handle_csi(tp, len, argp, offset, buf,
+					     bufsize, buflen, key_name, &slen);
+		if (resp != 0)
+		{
+#ifdef DEBUG_TERMRESPONSE
+		    if (resp == -1)
+			LOG_TR(("Not enough characters for CSI sequence"));
+#endif
+		    return resp;
+		}
+	    }
+
+	    // Check for fore/background color response from the terminal,
+	    // starting} with <Esc>] or OSC
+	    else if ((*T_RBG != NUL || *T_RFG != NUL)
+			&& ((tp[0] == ESC && len >= 2 && tp[1] == ']')
+			    || tp[0] == OSC))
+	    {
+		if (handle_osc(tp, argp, len, key_name, &slen) == FAIL)
+		    return -1;
+	    }
+
+	    // Check for key code response from xterm,
+	    // starting with <Esc>P or DCS
+	    // It would only be needed with this condition:
+	    //	    (check_for_codes || rcs_status.tr_progress == STATUS_SENT)
+	    // Now this is always done so that DCS codes don't mess up things.
+	    else if ((tp[0] == ESC && len >= 2 && tp[1] == 'P') || tp[0] == DCS)
+	    {
+		if (handle_dcs(tp, argp, len, key_name, &slen) == FAIL)
+		    return -1;
+	    }
+	}
+
+	if (key_name[0] == NUL)
+	    continue;	    // No match at this position, try next one
+
+	// We only get here when we have a complete termcode match
+
+#if defined(FEAT_GUI) || defined(MSWIN)
+	/*
+	 * For scroll events from the GUI or MS-Windows console, fetch the
+	 * pointer coordinates so that we know which window to scroll later.
+	 */
+	if (TRUE
+# if defined(FEAT_GUI) && !defined(MSWIN)
+		&& gui.in_use
+# endif
+		&& key_name[0] == (int)KS_EXTRA
+		&& (key_name[1] == (int)KE_X1MOUSE
+		    || key_name[1] == (int)KE_X2MOUSE
+		    || key_name[1] == (int)KE_MOUSEMOVE_XY
+		    || key_name[1] == (int)KE_MOUSELEFT
+		    || key_name[1] == (int)KE_MOUSERIGHT
+		    || key_name[1] == (int)KE_MOUSEDOWN
+		    || key_name[1] == (int)KE_MOUSEUP))
+	{
+	    char_u	bytes[6];
+	    int		num_bytes = get_bytes_from_buf(tp + slen, bytes, 4);
+
+	    if (num_bytes == -1)	// not enough coordinates
+		return -1;
+	    mouse_col = 128 * (bytes[0] - ' ' - 1) + bytes[1] - ' ' - 1;
+	    mouse_row = 128 * (bytes[2] - ' ' - 1) + bytes[3] - ' ' - 1;
+	    slen += num_bytes;
+	    // equal to K_MOUSEMOVE
+	    if (key_name[1] == (int)KE_MOUSEMOVE_XY)
+		key_name[1] = (int)KE_MOUSEMOVE;
+	}
+	else
+#endif
+	/*
+	 * If it is a mouse click, get the coordinates.
+	 */
+	if (key_name[0] == KS_MOUSE
+#ifdef FEAT_MOUSE_GPM
+		|| key_name[0] == KS_GPM_MOUSE
+#endif
+#ifdef FEAT_MOUSE_JSB
+		|| key_name[0] == KS_JSBTERM_MOUSE
+#endif
+#ifdef FEAT_MOUSE_NET
+		|| key_name[0] == KS_NETTERM_MOUSE
+#endif
+#ifdef FEAT_MOUSE_DEC
+		|| key_name[0] == KS_DEC_MOUSE
+#endif
+#ifdef FEAT_MOUSE_PTERM
+		|| key_name[0] == KS_PTERM_MOUSE
+#endif
+#ifdef FEAT_MOUSE_URXVT
+		|| key_name[0] == KS_URXVT_MOUSE
+#endif
+		|| key_name[0] == KS_SGR_MOUSE
+		|| key_name[0] == KS_SGR_MOUSE_RELEASE)
+	{
+	    if (check_termcode_mouse(tp, &slen, key_name, modifiers_start, idx,
+							     &modifiers) == -1)
+		return -1;
+	}
+
+#ifdef FEAT_GUI
+	/*
+	 * If using the GUI, then we get menu and scrollbar events.
+	 *
+	 * A menu event is encoded as K_SPECIAL, KS_MENU, KE_FILLER followed by
+	 * four bytes which are to be taken as a pointer to the vimmenu_T
+	 * structure.
+	 *
+	 * A tab line event is encoded as K_SPECIAL KS_TABLINE nr, where "nr"
+	 * is one byte with the tab index.
+	 *
+	 * A scrollbar event is K_SPECIAL, KS_VER_SCROLLBAR, KE_FILLER followed
+	 * by one byte representing the scrollbar number, and then four bytes
+	 * representing a long_u which is the new value of the scrollbar.
+	 *
+	 * A horizontal scrollbar event is K_SPECIAL, KS_HOR_SCROLLBAR,
+	 * KE_FILLER followed by four bytes representing a long_u which is the
+	 * new value of the scrollbar.
+	 */
+# ifdef FEAT_MENU
+	else if (key_name[0] == (int)KS_MENU)
+	{
+	    long_u	val;
+	    int		num_bytes = get_long_from_buf(tp + slen, &val);
+
+	    if (num_bytes == -1)
+		return -1;
+	    current_menu = (vimmenu_T *)val;
+	    slen += num_bytes;
+
+	    // The menu may have been deleted right after it was used, check
+	    // for that.
+	    if (check_menu_pointer(root_menu, current_menu) == FAIL)
+	    {
+		key_name[0] = KS_EXTRA;
+		key_name[1] = (int)KE_IGNORE;
+	    }
+	}
+# endif
+# ifdef FEAT_GUI_TABLINE
+	else if (key_name[0] == (int)KS_TABLINE)
+	{
+	    // Selecting tabline tab or using its menu.
+	    char_u	bytes[6];
+	    int		num_bytes = get_bytes_from_buf(tp + slen, bytes, 1);
+
+	    if (num_bytes == -1)
+		return -1;
+	    current_tab = (int)bytes[0];
+	    if (current_tab == 255)	// -1 in a byte gives 255
+		current_tab = -1;
+	    slen += num_bytes;
+	}
+	else if (key_name[0] == (int)KS_TABMENU)
+	{
+	    // Selecting tabline tab or using its menu.
+	    char_u	bytes[6];
+	    int		num_bytes = get_bytes_from_buf(tp + slen, bytes, 2);
+
+	    if (num_bytes == -1)
+		return -1;
+	    current_tab = (int)bytes[0];
+	    current_tabmenu = (int)bytes[1];
+	    slen += num_bytes;
+	}
+# endif
+# ifndef USE_ON_FLY_SCROLL
+	else if (key_name[0] == (int)KS_VER_SCROLLBAR)
+	{
+	    long_u	val;
+	    char_u	bytes[6];
+	    int		num_bytes;
+
+	    // Get the last scrollbar event in the queue of the same type
+	    j = 0;
+	    for (i = 0; tp[j] == CSI && tp[j + 1] == KS_VER_SCROLLBAR
+						     && tp[j + 2] != NUL; ++i)
+	    {
+		j += 3;
+		num_bytes = get_bytes_from_buf(tp + j, bytes, 1);
+		if (num_bytes == -1)
+		    break;
+		if (i == 0)
+		    current_scrollbar = (int)bytes[0];
+		else if (current_scrollbar != (int)bytes[0])
+		    break;
+		j += num_bytes;
+		num_bytes = get_long_from_buf(tp + j, &val);
+		if (num_bytes == -1)
+		    break;
+		scrollbar_value = val;
+		j += num_bytes;
+		slen = j;
+	    }
+	    if (i == 0)		// not enough characters to make one
+		return -1;
+	}
+	else if (key_name[0] == (int)KS_HOR_SCROLLBAR)
+	{
+	    long_u	val;
+	    int		num_bytes;
+
+	    // Get the last horiz. scrollbar event in the queue
+	    j = 0;
+	    for (i = 0; tp[j] == CSI && tp[j + 1] == KS_HOR_SCROLLBAR
+						     && tp[j + 2] != NUL; ++i)
+	    {
+		j += 3;
+		num_bytes = get_long_from_buf(tp + j, &val);
+		if (num_bytes == -1)
+		    break;
+		scrollbar_value = val;
+		j += num_bytes;
+		slen = j;
+	    }
+	    if (i == 0)		// not enough characters to make one
+		return -1;
+	}
+# endif // !USE_ON_FLY_SCROLL
+#endif // FEAT_GUI
+
+#if defined(UNIX) || defined(VMS)
+	/*
+	 * Handle FocusIn/FocusOut event sequences reported by XTerm.
+	 * (CSI I/CSI O)
+	 */
+	if (key_name[0] == KS_EXTRA
+# ifdef FEAT_GUI
+		&& !gui.in_use
+# endif
+	    )
+	{
+	    if (key_name[1] == KE_FOCUSGAINED)
+	    {
+		if (!focus_state)
+		{
+		    ui_focus_change(TRUE);
+		    did_cursorhold = TRUE;
+		    focus_state = TRUE;
+		}
+		key_name[1] = (int)KE_IGNORE;
+	    }
+	    else if (key_name[1] == KE_FOCUSLOST)
+	    {
+		if (focus_state)
+		{
+		    ui_focus_change(FALSE);
+		    did_cursorhold = TRUE;
+		    focus_state = FALSE;
+		}
+		key_name[1] = (int)KE_IGNORE;
+	    }
+	}
+#endif
+
+	/*
+	 * Change <xHome> to <Home>, <xUp> to <Up>, etc.
+	 */
+	key = handle_x_keys(TERMCAP2KEY(key_name[0], key_name[1]));
+
+	/*
+	 * Add any modifier codes to our string.
+	 */
+	new_slen = modifiers2keycode(modifiers, &key, string);
+
+	// Finally, add the special key code to our string
+	key_name[0] = KEY2TERMCAP0(key);
+	key_name[1] = KEY2TERMCAP1(key);
+	if (key_name[0] == KS_KEY)
+	{
+	    // from ":set <M-b>=xx"
+	    if (has_mbyte)
+		new_slen += (*mb_char2bytes)(key_name[1], string + new_slen);
+	    else
+		string[new_slen++] = key_name[1];
+	}
+	else if (new_slen == 0 && key_name[0] == KS_EXTRA
+						  && key_name[1] == KE_IGNORE)
+	{
+	    // Do not put K_IGNORE into the buffer, do return KEYLEN_REMOVED
+	    // to indicate what happened.
+	    retval = KEYLEN_REMOVED;
+	}
+	else
+	{
+	    string[new_slen++] = K_SPECIAL;
+	    string[new_slen++] = key_name[0];
+	    string[new_slen++] = key_name[1];
+	}
+	if (put_string_in_typebuf(offset, slen, string, new_slen,
+						 buf, bufsize, buflen) == FAIL)
+	    return -1;
+	return retval == 0 ? (len + new_slen - slen + offset) : retval;
+    }
+
+#ifdef FEAT_TERMRESPONSE
+    LOG_TR(("normal character"));
+#endif
+
+    return 0;			    // no match found
+}
+
+#if (defined(FEAT_TERMINAL) && defined(FEAT_TERMRESPONSE)) || defined(PROTO)
+/*
+ * Get the text foreground color, if known.
+ */
+    void
+term_get_fg_color(char_u *r, char_u *g, char_u *b)
+{
+    if (rfg_status.tr_progress != STATUS_GOT)
+	return;
+
+    *r = fg_r;
+    *g = fg_g;
+    *b = fg_b;
+}
+
+/*
+ * Get the text background color, if known.
+ */
+    void
+term_get_bg_color(char_u *r, char_u *g, char_u *b)
+{
+    if (rbg_status.tr_progress != STATUS_GOT)
+	return;
+
+    *r = bg_r;
+    *g = bg_g;
+    *b = bg_b;
+}
+#endif
+
+/*
+ * Replace any terminal code strings in from[] with the equivalent internal
+ * vim representation.	This is used for the "from" and "to" part of a
+ * mapping, and the "to" part of a menu command.
+ * Any strings like "<C-UP>" are also replaced, unless 'cpoptions' contains
+ * '<'.
+ * K_SPECIAL by itself is replaced by K_SPECIAL KS_SPECIAL KE_FILLER.
+ *
+ * The replacement is done in result[] and finally copied into allocated
+ * memory. If this all works well *bufp is set to the allocated memory and a
+ * pointer to it is returned. If something fails *bufp is set to NULL and from
+ * is returned.
+ *
+ * CTRL-V characters are removed.  When "flags" has REPTERM_FROM_PART, a
+ * trailing CTRL-V is included, otherwise it is removed (for ":map xx ^V", maps
+ * xx to nothing).  When 'cpoptions' does not contain 'B', a backslash can be
+ * used instead of a CTRL-V.
+ *
+ * Flags:
+ *  REPTERM_FROM_PART	see above
+ *  REPTERM_DO_LT	also translate <lt>
+ *  REPTERM_SPECIAL	always accept <key> notation
+ *  REPTERM_NO_SIMPLIFY	do not simplify <C-H> to 0x08 and set 8th bit for <A-x>
+ *
+ * "did_simplify" is set when some <C-H> or <A-x> code was simplified, unless
+ * it is NULL.
+ */
+    char_u *
+replace_termcodes(
+    char_u	*from,
+    char_u	**bufp,
+    int		flags,
+    int		*did_simplify)
+{
+    int		i;
+    int		slen;
+    int		key;
+    size_t	dlen = 0;
+    char_u	*src;
+    int		do_backslash;	// backslash is a special character
+    int		do_special;	// recognize <> key codes
+    int		do_key_code;	// recognize raw key codes
+    char_u	*result;	// buffer for resulting string
+    garray_T	ga;
+
+    do_backslash = (vim_strchr(p_cpo, CPO_BSLASH) == NULL);
+    do_special = (vim_strchr(p_cpo, CPO_SPECI) == NULL)
+						  || (flags & REPTERM_SPECIAL);
+    do_key_code = (vim_strchr(p_cpo, CPO_KEYCODE) == NULL);
+    src = from;
+
+    /*
+     * Allocate space for the translation.  Worst case a single character is
+     * replaced by 6 bytes (shifted special key), plus a NUL at the end.
+     * In the rare case more might be needed ga_grow() must be called again.
+     */
+    ga_init2(&ga, 1L, 100);
+    if (ga_grow(&ga, (int)(STRLEN(src) * 6 + 1)) == FAIL) // out of memory
+    {
+	*bufp = NULL;
+	return from;
+    }
+    result = ga.ga_data;
+
+    /*
+     * Check for #n at start only: function key n
+     */
+    if ((flags & REPTERM_FROM_PART) && src[0] == '#' && VIM_ISDIGIT(src[1]))
+    {
+	result[dlen++] = K_SPECIAL;
+	result[dlen++] = 'k';
+	if (src[1] == '0')
+	    result[dlen++] = ';';	// #0 is F10 is "k;"
+	else
+	    result[dlen++] = src[1];	// #3 is F3 is "k3"
+	src += 2;
+    }
+
+    /*
+     * Copy each byte from *from to result[dlen]
+     */
+    while (*src != NUL)
+    {
+	/*
+	 * If 'cpoptions' does not contain '<', check for special key codes,
+	 * like "<C-S-LeftMouse>"
+	 */
+	if (do_special && ((flags & REPTERM_DO_LT)
+					      || STRNCMP(src, "<lt>", 4) != 0))
+	{
+#ifdef FEAT_EVAL
+	    /*
+	     * Change <SID>Func to K_SNR <script-nr> _Func.  This name is used
+	     * for script-locla user functions.
+	     * (room: 5 * 6 = 30 bytes; needed: 3 + <nr> + 1 <= 14)
+	     * Also change <SID>name.Func to K_SNR <import-script-nr> _Func.
+	     * Only if "name" is recognized as an import.
+	     */
+	    if (STRNICMP(src, "<SID>", 5) == 0)
+	    {
+		if (current_sctx.sc_sid <= 0)
+		    emsg(_(e_using_sid_not_in_script_context));
+		else
+		{
+		    char_u  *dot;
+		    long    sid = current_sctx.sc_sid;
+
+		    src += 5;
+		    if (in_vim9script()
+				       && (dot = vim_strchr(src, '.')) != NULL)
+		    {
+			imported_T *imp = find_imported(src, dot - src, FALSE);
+
+			if (imp != NULL)
+			{
+			    scriptitem_T    *si = SCRIPT_ITEM(imp->imp_sid);
+			    size_t	    len;
+
+			    src = dot + 1;
+			    if (si->sn_autoload_prefix != NULL)
+			    {
+				// Turn "<SID>name.Func"
+				// into "scriptname#Func".
+				len = STRLEN(si->sn_autoload_prefix);
+				if (ga_grow(&ga,
+				     (int)(STRLEN(src) * 6 + len + 1)) == FAIL)
+				{
+				    ga_clear(&ga);
+				    *bufp = NULL;
+				    return from;
+				}
+				result = ga.ga_data;
+				STRCPY(result + dlen, si->sn_autoload_prefix);
+				dlen += len;
+				continue;
+			    }
+			    sid = imp->imp_sid;
+			}
+		    }
+
+		    result[dlen++] = K_SPECIAL;
+		    result[dlen++] = (int)KS_EXTRA;
+		    result[dlen++] = (int)KE_SNR;
+		    sprintf((char *)result + dlen, "%ld", sid);
+		    dlen += STRLEN(result + dlen);
+		    result[dlen++] = '_';
+		    continue;
+		}
+	    }
+#endif
+	    int fsk_flags = FSK_KEYCODE
+			| ((flags & REPTERM_NO_SIMPLIFY) ? 0 : FSK_SIMPLIFY)
+			| ((flags & REPTERM_FROM_PART) ? FSK_FROM_PART : 0);
+	    slen = trans_special(&src, result + dlen, fsk_flags,
+							   TRUE, did_simplify);
+	    if (slen > 0)
+	    {
+		dlen += slen;
+		continue;
+	    }
+	}
+
+	/*
+	 * If 'cpoptions' does not contain 'k', see if it's an actual key-code.
+	 * Note that this is also checked after replacing the <> form.
+	 * Single character codes are NOT replaced (e.g. ^H or DEL), because
+	 * it could be a character in the file.
+	 */
+	if (do_key_code)
+	{
+	    i = find_term_bykeys(src);
+	    if (i >= 0)
+	    {
+		result[dlen++] = K_SPECIAL;
+		result[dlen++] = termcodes[i].name[0];
+		result[dlen++] = termcodes[i].name[1];
+		src += termcodes[i].len;
+		// If terminal code matched, continue after it.
+		continue;
+	    }
+	}
+
+#ifdef FEAT_EVAL
+	if (do_special)
+	{
+	    char_u	*p, *s, len;
+
+	    /*
+	     * Replace <Leader> by the value of "mapleader".
+	     * Replace <LocalLeader> by the value of "maplocalleader".
+	     * If "mapleader" or "maplocalleader" isn't set use a backslash.
+	     */
+	    if (STRNICMP(src, "<Leader>", 8) == 0)
+	    {
+		len = 8;
+		p = get_var_value((char_u *)"g:mapleader");
+	    }
+	    else if (STRNICMP(src, "<LocalLeader>", 13) == 0)
+	    {
+		len = 13;
+		p = get_var_value((char_u *)"g:maplocalleader");
+	    }
+	    else
+	    {
+		len = 0;
+		p = NULL;
+	    }
+	    if (len != 0)
+	    {
+		// Allow up to 8 * 6 characters for "mapleader".
+		if (p == NULL || *p == NUL || STRLEN(p) > 8 * 6)
+		    s = (char_u *)"\\";
+		else
+		    s = p;
+		while (*s != NUL)
+		    result[dlen++] = *s++;
+		src += len;
+		continue;
+	    }
+	}
+#endif
+
+	/*
+	 * Remove CTRL-V and ignore the next character.
+	 * For "from" side the CTRL-V at the end is included, for the "to"
+	 * part it is removed.
+	 * If 'cpoptions' does not contain 'B', also accept a backslash.
+	 */
+	key = *src;
+	if (key == Ctrl_V || (do_backslash && key == '\\'))
+	{
+	    ++src;				// skip CTRL-V or backslash
+	    if (*src == NUL)
+	    {
+		if (flags & REPTERM_FROM_PART)
+		    result[dlen++] = key;
+		break;
+	    }
+	}
+
+	// skip multibyte char correctly
+	for (i = (*mb_ptr2len)(src); i > 0; --i)
+	{
+	    /*
+	     * If the character is K_SPECIAL, replace it with K_SPECIAL
+	     * KS_SPECIAL KE_FILLER.
+	     * If compiled with the GUI replace CSI with K_CSI.
+	     */
+	    if (*src == K_SPECIAL)
+	    {
+		result[dlen++] = K_SPECIAL;
+		result[dlen++] = KS_SPECIAL;
+		result[dlen++] = KE_FILLER;
+	    }
+# ifdef FEAT_GUI
+	    else if (*src == CSI)
+	    {
+		result[dlen++] = K_SPECIAL;
+		result[dlen++] = KS_EXTRA;
+		result[dlen++] = (int)KE_CSI;
+	    }
+# endif
+	    else
+		result[dlen++] = *src;
+	    ++src;
+	}
+    }
+    result[dlen] = NUL;
+
+    /*
+     * Copy the new string to allocated memory.
+     * If this fails, just return from.
+     */
+    if ((*bufp = vim_strsave(result)) != NULL)
+	from = *bufp;
+    vim_free(result);
+    return from;
+}
+
+/*
+ * Find a termcode with keys 'src' (must be NUL terminated).
+ * Return the index in termcodes[], or -1 if not found.
+ */
+    static int
+find_term_bykeys(char_u *src)
+{
+    int		i;
+    int		slen = (int)STRLEN(src);
+
+    for (i = 0; i < tc_len; ++i)
+    {
+	if (slen == termcodes[i].len
+			&& STRNCMP(termcodes[i].code, src, (size_t)slen) == 0)
+	    return i;
+    }
+    return -1;
+}
+
+/*
+ * Gather the first characters in the terminal key codes into a string.
+ * Used to speed up check_termcode().
+ */
+    static void
+gather_termleader(void)
+{
+    int	    i;
+    int	    len = 0;
+
+#ifdef FEAT_GUI
+    if (gui.in_use)
+	termleader[len++] = CSI;    // the GUI codes are not in termcodes[]
+#endif
+#ifdef FEAT_TERMRESPONSE
+    if (check_for_codes || *T_CRS != NUL)
+	termleader[len++] = DCS;    // the termcode response starts with DCS
+				    // in 8-bit mode
+#endif
+    termleader[len] = NUL;
+
+    for (i = 0; i < tc_len; ++i)
+	if (vim_strchr(termleader, termcodes[i].code[0]) == NULL)
+	{
+	    termleader[len++] = termcodes[i].code[0];
+	    termleader[len] = NUL;
+	}
+
+    need_gather = FALSE;
+}
+
+/*
+ * Show all termcodes (for ":set termcap")
+ * This code looks a lot like showoptions(), but is different.
+ * "flags" can have OPT_ONECOLUMN.
+ */
+    void
+show_termcodes(int flags)
+{
+    int		col;
+    int		*items;
+    int		item_count;
+    int		run;
+    int		row, rows;
+    int		cols;
+    int		i;
+    int		len;
+
+#define INC3 27	    // try to make three columns
+#define INC2 40	    // try to make two columns
+#define GAP 2	    // spaces between columns
+
+    if (tc_len == 0)	    // no terminal codes (must be GUI)
+	return;
+    items = ALLOC_MULT(int, tc_len);
+    if (items == NULL)
+	return;
+
+    // Highlight title
+    msg_puts_title(_("\n--- Terminal keys ---"));
+
+    /*
+     * Do the loop three times:
+     * 1. display the short items (non-strings and short strings)
+     * 2. display the medium items (medium length strings)
+     * 3. display the long items (remaining strings)
+     * When "flags" has OPT_ONECOLUMN do everything in 3.
+     */
+    for (run = (flags & OPT_ONECOLUMN) ? 3 : 1; run <= 3 && !got_int; ++run)
+    {
+	/*
+	 * collect the items in items[]
+	 */
+	item_count = 0;
+	for (i = 0; i < tc_len; i++)
+	{
+	    len = show_one_termcode(termcodes[i].name,
+						    termcodes[i].code, FALSE);
+	    if ((flags & OPT_ONECOLUMN) ||
+		    (len <= INC3 - GAP ? run == 1
+			: len <= INC2 - GAP ? run == 2
+			: run == 3))
+		items[item_count++] = i;
+	}
+
+	/*
+	 * display the items
+	 */
+	if (run <= 2)
+	{
+	    cols = (Columns + GAP) / (run == 1 ? INC3 : INC2);
+	    if (cols == 0)
+		cols = 1;
+	    rows = (item_count + cols - 1) / cols;
+	}
+	else	// run == 3
+	    rows = item_count;
+	for (row = 0; row < rows && !got_int; ++row)
+	{
+	    msg_putchar('\n');			// go to next line
+	    if (got_int)			// 'q' typed in more
+		break;
+	    col = 0;
+	    for (i = row; i < item_count; i += rows)
+	    {
+		msg_col = col;			// make columns
+		show_one_termcode(termcodes[items[i]].name,
+					      termcodes[items[i]].code, TRUE);
+		if (run == 2)
+		    col += INC2;
+		else
+		    col += INC3;
+	    }
+	    out_flush();
+	    ui_breakcheck();
+	}
+    }
+    vim_free(items);
+}
+
+/*
+ * Show one termcode entry.
+ * Output goes into IObuff[]
+ */
+    int
+show_one_termcode(char_u *name, char_u *code, int printit)
+{
+    char_u	*p;
+    int		len;
+
+    if (name[0] > '~')
+    {
+	IObuff[0] = ' ';
+	IObuff[1] = ' ';
+	IObuff[2] = ' ';
+	IObuff[3] = ' ';
+    }
+    else
+    {
+	IObuff[0] = 't';
+	IObuff[1] = '_';
+	IObuff[2] = name[0];
+	IObuff[3] = name[1];
+    }
+    IObuff[4] = ' ';
+
+    p = get_special_key_name(TERMCAP2KEY(name[0], name[1]), 0);
+    if (p[1] != 't')
+	STRCPY(IObuff + 5, p);
+    else
+	IObuff[5] = NUL;
+    len = (int)STRLEN(IObuff);
+    do
+	IObuff[len++] = ' ';
+    while (len < 17);
+    IObuff[len] = NUL;
+    if (code == NULL)
+	len += 4;
+    else
+	len += vim_strsize(code);
+
+    if (printit)
+    {
+	msg_puts((char *)IObuff);
+	if (code == NULL)
+	    msg_puts("NULL");
+	else
+	    msg_outtrans(code);
+    }
+    return len;
+}
+
+#if defined(FEAT_TERMRESPONSE) || defined(PROTO)
+/*
+ * For Xterm >= 140 compiled with OPT_TCAP_QUERY: Obtain the actually used
+ * termcap codes from the terminal itself.
+ * We get them one by one to avoid a very long response string.
+ */
+static int xt_index_in = 0;
+static int xt_index_out = 0;
+
+    static void
+req_codes_from_term(void)
+{
+    xt_index_out = 0;
+    xt_index_in = 0;
+    req_more_codes_from_term();
+}
+
+    static void
+req_more_codes_from_term(void)
+{
+    char	buf[23];  // extra size to shut up LGTM
+    int		old_idx = xt_index_out;
+
+    // Don't do anything when going to exit.
+    if (exiting)
+	return;
+
+    // Send up to 10 more requests out than we received.  Avoid sending too
+    // many, there can be a buffer overflow somewhere.
+    while (xt_index_out < xt_index_in + 10 && key_names[xt_index_out] != NULL)
+    {
+	char *key_name = key_names[xt_index_out];
+
+	MAY_WANT_TO_LOG_THIS;
+	LOG_TR(("Requesting XT %d: %s", xt_index_out, key_name));
+	sprintf(buf, "\033P+q%02x%02x\033\\", key_name[0], key_name[1]);
+	out_str_nf((char_u *)buf);
+	++xt_index_out;
+    }
+
+    // Send the codes out right away.
+    if (xt_index_out != old_idx)
+	out_flush();
+}
+
+/*
+ * Decode key code response from xterm: '<Esc>P1+r<name>=<string><Esc>\'.
+ * A "0" instead of the "1" indicates a code that isn't supported.
+ * Both <name> and <string> are encoded in hex.
+ * "code" points to the "0" or "1".
+ */
+    static void
+got_code_from_term(char_u *code, int len)
+{
+#define XT_LEN 100
+    char_u	name[3];
+    char_u	str[XT_LEN];
+    int		i;
+    int		j = 0;
+    int		c;
+
+    // A '1' means the code is supported, a '0' means it isn't.
+    // When half the length is > XT_LEN we can't use it.
+    // Our names are currently all 2 characters.
+    if (code[0] == '1' && code[7] == '=' && len / 2 < XT_LEN)
+    {
+	// Get the name from the response and find it in the table.
+	name[0] = hexhex2nr(code + 3);
+	name[1] = hexhex2nr(code + 5);
+	name[2] = NUL;
+	for (i = 0; key_names[i] != NULL; ++i)
+	{
+	    if (STRCMP(key_names[i], name) == 0)
+	    {
+		xt_index_in = i;
+		break;
+	    }
+	}
+
+	LOG_TR(("Received XT %d: %s", xt_index_in, (char *)name));
+
+	if (key_names[i] != NULL)
+	{
+	    for (i = 8; (c = hexhex2nr(code + i)) >= 0; i += 2)
+		str[j++] = c;
+	    str[j] = NUL;
+	    if (name[0] == 'C' && name[1] == 'o')
+	    {
+		// Color count is not a key code.
+		int val = atoi((char *)str);
+#if defined(FEAT_EVAL)
+		if (val == t_colors)
+		    ch_log(NULL, "got_code_from_term(Co): no change (%d)", val);
+		else
+		    ch_log(NULL,
+			       "got_code_from_term(Co): changed from %d to %d",
+								t_colors, val);
+#endif
+		may_adjust_color_count(val);
+	    }
+	    else
+	    {
+		i = find_term_bykeys(str);
+		if (i >= 0 && name[0] == termcodes[i].name[0]
+					    && name[1] == termcodes[i].name[1])
+		{
+		    // Existing entry with the same name and code - skip.
+#ifdef FEAT_EVAL
+		    ch_log(NULL, "got_code_from_term(): Entry %c%c did not change",
+							     name[0], name[1]);
+#endif
+		}
+		else
+		{
+		    if (i >= 0)
+		    {
+			// Delete an existing entry using the same code.
+#ifdef FEAT_EVAL
+			ch_log(NULL, "got_code_from_term(): Deleting entry %c%c with matching keys %s",
+			      termcodes[i].name[0], termcodes[i].name[1], str);
+#endif
+			del_termcode_idx(i);
+		    }
+#ifdef FEAT_EVAL
+		    else
+			ch_log(NULL, "got_code_from_term(): Adding entry %c%c with keys %s",
+							name[0], name[1], str);
+#endif
+		    add_termcode(name, str, ATC_FROM_TERM);
+		}
+	    }
+	}
+    }
+
+    // May request more codes now that we received one.
+    ++xt_index_in;
+    req_more_codes_from_term();
+}
+
+/*
+ * Check if there are any unanswered requests and deal with them.
+ * This is called before starting an external program or getting direct
+ * keyboard input.  We don't want responses to be send to that program or
+ * handled as typed text.
+ */
+    static void
+check_for_codes_from_term(void)
+{
+    int		c;
+
+    // If no codes requested or all are answered, no need to wait.
+    if (xt_index_out == 0 || xt_index_out == xt_index_in)
+	return;
+
+    // Vgetc() will check for and handle any response.
+    // Keep calling vpeekc() until we don't get any responses.
+    ++no_mapping;
+    ++allow_keys;
+    for (;;)
+    {
+	c = vpeekc();
+	if (c == NUL)	    // nothing available
+	    break;
+
+	// If a response is recognized it's replaced with K_IGNORE, must read
+	// it from the input stream.  If there is no K_IGNORE we can't do
+	// anything, break here (there might be some responses further on, but
+	// we don't want to throw away any typed chars).
+	if (c != K_SPECIAL && c != K_IGNORE)
+	    break;
+	c = vgetc();
+	if (c != K_IGNORE)
+	{
+	    vungetc(c);
+	    break;
+	}
+    }
+    --no_mapping;
+    --allow_keys;
+}
+#endif
+
+#if (defined(MSWIN) && (!defined(FEAT_GUI) || defined(VIMDLL))) || defined(PROTO)
+static char ksme_str[20];
+static char ksmr_str[20];
+static char ksmd_str[20];
+
+/*
+ * For Win32 console: update termcap codes for existing console attributes.
+ */
+    void
+update_tcap(int attr)
+{
+    sprintf(ksme_str, "\033|%dm", attr);
+    sprintf(ksmd_str, "\033|%dm", attr | 0x08);  // FOREGROUND_INTENSITY
+    sprintf(ksmr_str, "\033|%dm", ((attr & 0x0F) << 4) | ((attr & 0xF0) >> 4));
+
+    tcap_entry_T *p = find_builtin_term(DEFAULT_TERM);
+    if (p == NULL)  // did not find it
+	return;
+    while (p->bt_string != NULL)
+    {
+      if (p->bt_entry == (int)KS_ME)
+	  p->bt_string = &ksme_str[0];
+      else if (p->bt_entry == (int)KS_MR)
+	  p->bt_string = &ksmr_str[0];
+      else if (p->bt_entry == (int)KS_MD)
+	  p->bt_string = &ksmd_str[0];
+      ++p;
+    }
+}
+
+# ifdef FEAT_TERMGUICOLORS
+#  define KSSIZE 20
+
+typedef enum
+{
+    CMODE_INDEXED = 0,	// Use cmd.exe 4bit palette.
+    CMODE_RGB,		// Use 24bit RGB colors using VTP.
+    CMODE_256COL,	// Emulate xterm's 256-color palette using VTP.
+    CMODE_LAST,
+} cmode_T;
+
+struct ks_tbl_S
+{
+    int  code;				// value of KS_
+    char *vtp;				// code in RGB mode
+    char *vtp2;				// code in 256color mode
+    char buf[CMODE_LAST][KSSIZE];	// real buffer
+};
+
+static struct ks_tbl_S ks_tbl[] =
+{
+    {(int)KS_ME,  "\033|0m",  "\033|0m", {""}},   // normal
+    {(int)KS_MR,  "\033|7m",  "\033|7m", {""}},   // reverse
+    {(int)KS_MD,  "\033|1m",  "\033|1m", {""}},   // bold
+    {(int)KS_SO,  "\033|91m", "\033|91m", {""}},  // standout: bright red text
+    {(int)KS_SE,  "\033|39m", "\033|39m", {""}},  // standout end: default color
+    {(int)KS_CZH, "\033|3m",  "\033|3m", {""}},   // italic
+    {(int)KS_CZR, "\033|0m",  "\033|0m", {""}},   // italic end
+    {(int)KS_US,  "\033|4m",  "\033|4m", {""}},   // underscore
+    {(int)KS_UE,  "\033|24m", "\033|24m", {""}},  // underscore end
+#  ifdef TERMINFO
+    {(int)KS_CAB, "\033|%p1%db", "\033|%p14%dm", {""}}, // set background color
+    {(int)KS_CAF, "\033|%p1%df", "\033|%p13%dm", {""}}, // set foreground color
+    {(int)KS_CS,  "\033|%p1%d;%p2%dR", "\033|%p1%d;%p2%dR", {""}},
+    {(int)KS_CSV, "\033|%p1%d;%p2%dV", "\033|%p1%d;%p2%dV", {""}},
+#  else
+    {(int)KS_CAB, "\033|%db", "\033|4%dm", {""}}, // set background color
+    {(int)KS_CAF, "\033|%df", "\033|3%dm", {""}}, // set foreground color
+    {(int)KS_CS,  "\033|%d;%dR", "\033|%d;%dR", {""}},
+    {(int)KS_CSV, "\033|%d;%dV", "\033|%d;%dV", {""}},
+#  endif
+    {(int)KS_CCO, "256", "256", {""}},	    // colors
+    {(int)KS_NAME, NULL, NULL, {""}}			    // terminator
+};
+
+/*
+ * Find the first entry for "code" in the builtin termcap for "name".
+ * Returns NULL when not found.
+ */
+    static tcap_entry_T *
+find_first_tcap(
+    char_u *name,
+    int	    code)
+{
+    tcap_entry_T *p = find_builtin_term(name);
+    if (p == NULL)
+	return NULL;
+    while (p->bt_string != NULL)
+    {
+	if (p->bt_entry == code)
+	    return p;
+	++p;
+    }
+    return NULL;
+}
+# endif
+
+/*
+ * For Win32 console: replace the sequence immediately after termguicolors.
+ */
+    void
+swap_tcap(void)
+{
+# ifdef FEAT_TERMGUICOLORS
+    static int		init_done = FALSE;
+    static cmode_T	curr_mode;
+    struct ks_tbl_S	*ks;
+    cmode_T		mode;
+
+    if (!init_done)
+    {
+	for (ks = ks_tbl; ks->code != (int)KS_NAME; ks++)
+	{
+	    tcap_entry_T *bt = find_first_tcap(DEFAULT_TERM, ks->code);
+	    if (bt != NULL)
+	    {
+		// Preserve the original value.
+		STRNCPY(ks->buf[CMODE_INDEXED], bt->bt_string, KSSIZE);
+		STRNCPY(ks->buf[CMODE_RGB], ks->vtp, KSSIZE);
+		STRNCPY(ks->buf[CMODE_256COL], ks->vtp2, KSSIZE);
+
+		bt->bt_string = ks->buf[CMODE_INDEXED];
+	    }
+	}
+	init_done = TRUE;
+	curr_mode = CMODE_INDEXED;
+    }
+
+    if (p_tgc)
+	mode = CMODE_RGB;
+    else if (t_colors >= 256)
+	mode = CMODE_256COL;
+    else
+	mode = CMODE_INDEXED;
+
+    if (mode == curr_mode)
+	return;
+
+    for (ks = ks_tbl; ks->code != (int)KS_NAME; ks++)
+    {
+	tcap_entry_T *bt = find_first_tcap(DEFAULT_TERM, ks->code);
+	if (bt != NULL)
+	    bt->bt_string = ks->buf[mode];
+    }
+
+    curr_mode = mode;
+# endif
+}
+
+#endif
+
+
+#if (defined(MSWIN) && (!defined(FEAT_GUI_MSWIN) || defined(VIMDLL))) || defined(FEAT_TERMINAL) \
+	|| defined(PROTO)
+static int cube_value[] = {
+    0x00, 0x5F, 0x87, 0xAF, 0xD7, 0xFF
+};
+
+static int grey_ramp[] = {
+    0x08, 0x12, 0x1C, 0x26, 0x30, 0x3A, 0x44, 0x4E, 0x58, 0x62, 0x6C, 0x76,
+    0x80, 0x8A, 0x94, 0x9E, 0xA8, 0xB2, 0xBC, 0xC6, 0xD0, 0xDA, 0xE4, 0xEE
+};
+
+static const char_u ansi_table[16][3] = {
+//   R    G    B
+  {  0,   0,   0}, // black
+  {224,   0,   0}, // dark red
+  {  0, 224,   0}, // dark green
+  {224, 224,   0}, // dark yellow / brown
+  {  0,   0, 224}, // dark blue
+  {224,   0, 224}, // dark magenta
+  {  0, 224, 224}, // dark cyan
+  {224, 224, 224}, // light grey
+
+  {128, 128, 128}, // dark grey
+  {255,  64,  64}, // light red
+  { 64, 255,  64}, // light green
+  {255, 255,  64}, // yellow
+  { 64,  64, 255}, // light blue
+  {255,  64, 255}, // light magenta
+  { 64, 255, 255}, // light cyan
+  {255, 255, 255}, // white
+};
+
+#if defined(MSWIN)
+// Mapping between cterm indices < 16 and their counterpart in the ANSI palette.
+static const char_u cterm_ansi_idx[] = {
+    0, 4, 2, 6, 1, 5, 3, 7, 8, 12, 10, 14, 9, 13, 11, 15
+};
+#endif
+
+#define ANSI_INDEX_NONE 0
+
+    void
+ansi_color2rgb(int nr, char_u *r, char_u *g, char_u *b, char_u *ansi_idx)
+{
+    if (nr < 16)
+    {
+	*r = ansi_table[nr][0];
+	*g = ansi_table[nr][1];
+	*b = ansi_table[nr][2];
+	*ansi_idx = nr;
+    }
+    else
+    {
+	*r = 0;
+	*g = 0;
+	*b = 0;
+	*ansi_idx = ANSI_INDEX_NONE;
+    }
+}
+
+    void
+cterm_color2rgb(int nr, char_u *r, char_u *g, char_u *b, char_u *ansi_idx)
+{
+    int idx;
+
+    if (nr < 16)
+    {
+#if defined(MSWIN)
+	idx = cterm_ansi_idx[nr];
+#else
+	idx = nr;
+#endif
+	*r = ansi_table[idx][0];
+	*g = ansi_table[idx][1];
+	*b = ansi_table[idx][2];
+	*ansi_idx = idx + 1;
+    }
+    else if (nr < 232)
+    {
+	// 216 color cube
+	idx = nr - 16;
+	*r = cube_value[idx / 36 % 6];
+	*g = cube_value[idx / 6  % 6];
+	*b = cube_value[idx      % 6];
+	*ansi_idx = ANSI_INDEX_NONE;
+    }
+    else if (nr < 256)
+    {
+	// 24 grey scale ramp
+	idx = nr - 232;
+	*r = grey_ramp[idx];
+	*g = grey_ramp[idx];
+	*b = grey_ramp[idx];
+	*ansi_idx = ANSI_INDEX_NONE;
+    }
+    else
+    {
+	*r = 0;
+	*g = 0;
+	*b = 0;
+	*ansi_idx = ANSI_INDEX_NONE;
+    }
+}
+#endif
+
+/*
+ * Replace K_BS by <BS> and K_DEL by <DEL>.
+ * Include any modifiers into the key and drop them.
+ * Returns "len" adjusted for replaced codes.
+ */
+    int
+term_replace_keycodes(char_u *ta_buf, int ta_len, int len_arg)
+{
+    int		len = len_arg;
+    int		i;
+    int		c;
+
+    for (i = ta_len; i < ta_len + len; ++i)
+    {
+	if (ta_buf[i] == CSI && len - i > 3 && ta_buf[i + 1] == KS_MODIFIER)
+	{
+	    int modifiers = ta_buf[i + 2];
+	    int key = ta_buf[i + 3];
+
+	    // Try to use the modifier to modify the key.  In any case drop the
+	    // modifier.
+	    mch_memmove(ta_buf + i + 1, ta_buf + i + 4, (size_t)(len - i - 3));
+	    len -= 3;
+	    if (key < 0x80)
+		key = merge_modifyOtherKeys(key, &modifiers);
+	    ta_buf[i] = key;
+	}
+	else if (ta_buf[i] == CSI && len - i > 2)
+	{
+	    c = TERMCAP2KEY(ta_buf[i + 1], ta_buf[i + 2]);
+	    if (c == K_DEL || c == K_KDEL || c == K_BS)
+	    {
+		mch_memmove(ta_buf + i + 1, ta_buf + i + 3,
+							(size_t)(len - i - 2));
+		if (c == K_DEL || c == K_KDEL)
+		    ta_buf[i] = DEL;
+		else
+		    ta_buf[i] = Ctrl_H;
+		len -= 2;
+	    }
+	}
+	else if (ta_buf[i] == '\r')
+	    ta_buf[i] = '\n';
+	if (has_mbyte)
+	    i += (*mb_ptr2len_len)(ta_buf + i, ta_len + len - i) - 1;
+    }
+    return len;
+}