diff src/message.c @ 7:3fc0f57ecb91 v7.0001

updated for version 7.0001
author vimboss
date Sun, 13 Jun 2004 20:20:40 +0000
parents
children 7edf9b6e4c36
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new file mode 100644
--- /dev/null
+++ b/src/message.c
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+/* vi:set ts=8 sts=4 sw=4:
+ *
+ * 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.
+ */
+
+/*
+ * message.c: functions for displaying messages on the command line
+ */
+
+#define MESSAGE_FILE		/* don't include prototype for smsg() */
+
+#include "vim.h"
+
+#ifdef HAVE_STDARG_H
+# include <stdarg.h>
+#endif
+
+static void reset_last_sourcing __ARGS((void));
+static char_u *get_emsg_source __ARGS((int other));
+static char_u *get_emsg_lnum __ARGS((int other));
+static void add_msg_hist __ARGS((char_u *s, int len, int attr));
+static void hit_return_msg __ARGS((void));
+static void msg_home_replace_attr __ARGS((char_u *fname, int attr));
+#ifdef FEAT_MBYTE
+static char_u *screen_puts_mbyte __ARGS((char_u *s, int l, int attr));
+#endif
+static void msg_puts_attr_len __ARGS((char_u *str, int maxlen, int attr));
+static void t_puts __ARGS((int t_col, char_u *t_s, char_u *s, int attr));
+static void msg_screen_putchar __ARGS((int c, int attr));
+static int  msg_check_screen __ARGS((void));
+static void redir_write __ARGS((char_u *s, int maxlen));
+#ifdef FEAT_CON_DIALOG
+static char_u *msg_show_console_dialog __ARGS((char_u *message, char_u *buttons, int dfltbutton));
+static int	confirm_msg_used = FALSE;	/* displaying confirm_msg */
+static char_u	*confirm_msg = NULL;		/* ":confirm" message */
+static char_u	*confirm_msg_tail;		/* tail of confirm_msg */
+#endif
+
+struct msg_hist
+{
+    struct msg_hist	*next;
+    char_u		*msg;
+    int			attr;
+};
+
+static struct msg_hist *first_msg_hist = NULL;
+static struct msg_hist *last_msg_hist = NULL;
+static int msg_hist_len = 0;
+static int msg_hist_off = FALSE;	/* don't add messages to history */
+
+/*
+ * When writing messages to the screen, there are many different situations.
+ * A number of variables is used to remember the current state:
+ * msg_didany	    TRUE when messages were written since the last time the
+ *		    user reacted to a prompt.
+ *		    Reset: After hitting a key for the hit-return prompt,
+ *		    hitting <CR> for the command line or input().
+ *		    Set: When any message is written to the screen.
+ * msg_didout	    TRUE when something was written to the current line.
+ *		    Reset: When advancing to the next line, when the current
+ *		    text can be overwritten.
+ *		    Set: When any message is written to the screen.
+ * msg_nowait	    No extra delay for the last drawn message.
+ *		    Used in normal_cmd() before the mode message is drawn.
+ * emsg_on_display  There was an error message recently.  Indicates that there
+ *		    should be a delay before redrawing.
+ * msg_scroll	    The next message should not overwrite the current one.
+ * msg_scrolled	    How many lines the screen has been scrolled (because of
+ *		    messages).  Used in update_screen() to scroll the screen
+ *		    back.  Incremented each time the screen scrolls a line.
+ * msg_scrolled_ign  TRUE when msg_scrolled is non-zero and msg_puts_attr()
+ *		    writes something without scrolling should not make
+ *		    need_wait_return to be set.  This is a hack to make ":ts"
+ *		    work without an extra prompt.
+ * lines_left	    Number of lines available for messages before the
+ *		    more-prompt is to be given.
+ * need_wait_return TRUE when the hit-return prompt is needed.
+ *		    Reset: After giving the hit-return prompt, when the user
+ *		    has answered some other prompt.
+ *		    Set: When the ruler or typeahead display is overwritten,
+ *		    scrolling the screen for some message.
+ * keep_msg	    Message to be displayed after redrawing the screen, in
+ *		    main_loop().
+ *		    This is an allocated string or NULL when not used.
+ */
+
+/*
+ * msg(s) - displays the string 's' on the status line
+ * When terminal not initialized (yet) mch_errmsg(..) is used.
+ * return TRUE if wait_return not called
+ */
+    int
+msg(s)
+    char_u	*s;
+{
+    return msg_attr_keep(s, 0, FALSE);
+}
+
+    int
+msg_attr(s, attr)
+    char_u	*s;
+    int		attr;
+{
+    return msg_attr_keep(s, attr, FALSE);
+}
+
+    int
+msg_attr_keep(s, attr, keep)
+    char_u	*s;
+    int		attr;
+    int		keep;	    /* TRUE: set keep_msg if it doesn't scroll */
+{
+    static int	entered = 0;
+    int		retval;
+    char_u	*buf = NULL;
+
+#ifdef FEAT_EVAL
+    if (attr == 0)
+	set_vim_var_string(VV_STATUSMSG, s, -1);
+#endif
+
+    /*
+     * It is possible that displaying a messages causes a problem (e.g.,
+     * when redrawing the window), which causes another message, etc..	To
+     * break this loop, limit the recursiveness to 3 levels.
+     */
+    if (entered >= 3)
+	return TRUE;
+    ++entered;
+
+    /* Add message to history (unless it's a repeated kept message or a
+     * truncated message) */
+    if (s != keep_msg
+	    || (*s != '<'
+		&& last_msg_hist != NULL
+		&& last_msg_hist->msg != NULL
+		&& STRCMP(s, last_msg_hist->msg)))
+	add_msg_hist(s, -1, attr);
+
+    /* When displaying keep_msg, don't let msg_start() free it, caller must do
+     * that. */
+    if (s == keep_msg)
+	keep_msg = NULL;
+
+    /* Truncate the message if needed. */
+    buf = msg_strtrunc(s);
+    if (buf != NULL)
+	s = buf;
+
+    msg_start();
+    msg_outtrans_attr(s, attr);
+    msg_clr_eos();
+    retval = msg_end();
+
+    if (keep && retval && vim_strsize(s) < (int)(Rows - cmdline_row - 1)
+							   * Columns + sc_col)
+    {
+	set_keep_msg(s);
+	keep_msg_attr = 0;
+    }
+
+    vim_free(buf);
+    --entered;
+    return retval;
+}
+
+/*
+ * Truncate a string such that it can be printed without causing a scroll.
+ * Returns an allocated string or NULL when no truncating is done.
+ */
+    char_u *
+msg_strtrunc(s)
+    char_u	*s;
+{
+    char_u	*buf = NULL;
+    int		len;
+    int		room;
+
+    /* May truncate message to avoid a hit-return prompt */
+    if (!msg_scroll && !need_wait_return && shortmess(SHM_TRUNCALL)
+							    && !exmode_active)
+    {
+	len = vim_strsize(s);
+	room = (int)(Rows - cmdline_row - 1) * Columns + sc_col - 1;
+	if (len > room && room > 0)
+	{
+#ifdef FEAT_MBYTE
+	    if (enc_utf8)
+		/* may have up to 18 bytes per cell (6 per char, up to two
+		 * composing chars) */
+		buf = alloc((room + 2) * 18);
+	    else if (enc_dbcs == DBCS_JPNU)
+		/* may have up to 2 bytes per cell for euc-jp */
+		buf = alloc((room + 2) * 2);
+	    else
+#endif
+		buf = alloc(room + 2);
+	    if (buf != NULL)
+		trunc_string(s, buf, room);
+	}
+    }
+    return buf;
+}
+
+/*
+ * Truncate a string "s" to "buf" with cell width "room".
+ * "s" and "buf" may be equal.
+ */
+    void
+trunc_string(s, buf, room)
+    char_u	*s;
+    char_u	*buf;
+    int		room;
+{
+    int		half;
+    int		len;
+    int		e;
+    int		i;
+    int		n;
+
+    room -= 3;
+    half = room / 2;
+    len = 0;
+
+    /* First part: Start of the string. */
+    for (e = 0; len < half; ++e)
+    {
+	if (s[e] == NUL)
+	{
+	    /* text fits without truncating! */
+	    buf[e] = NUL;
+	    return;
+	}
+	n = ptr2cells(s + e);
+	if (len + n >= half)
+	    break;
+	len += n;
+	buf[e] = s[e];
+#ifdef FEAT_MBYTE
+	if (has_mbyte)
+	    for (n = (*mb_ptr2len_check)(s + e); --n > 0; )
+	    {
+		++e;
+		buf[e] = s[e];
+	    }
+#endif
+    }
+
+    /* Last part: End of the string. */
+    i = e;
+#ifdef FEAT_MBYTE
+    if (enc_dbcs != 0)
+    {
+	/* For DBCS going backwards in a string is slow, but
+	 * computing the cell width isn't too slow: go forward
+	 * until the rest fits. */
+	n = vim_strsize(s + i);
+	while (len + n > room)
+	{
+	    n -= ptr2cells(s + i);
+	    i += (*mb_ptr2len_check)(s + i);
+	}
+    }
+    else if (enc_utf8)
+    {
+	/* For UTF-8 we can go backwards easily. */
+	i = (int)STRLEN(s);
+	for (;;)
+	{
+	    half = i - (*mb_head_off)(s, s + i - 1) - 1;
+	    n = ptr2cells(s + half);
+	    if (len + n > room)
+		break;
+	    len += n;
+	    i = half;
+	}
+    }
+    else
+#endif
+    {
+	for (i = (int)STRLEN(s); len + (n = ptr2cells(s + i - 1)) <= room; --i)
+	    len += n;
+    }
+
+    /* Set the middle and copy the last part. */
+    mch_memmove(buf + e, "...", (size_t)3);
+    mch_memmove(buf + e + 3, s + i, STRLEN(s + i) + 1);
+}
+
+/*
+ * Automatic prototype generation does not understand this function.
+ * Note: Caller of smgs() and smsg_attr() must check the resulting string is
+ * shorter than IOSIZE!!!
+ */
+#ifndef PROTO
+# ifndef HAVE_STDARG_H
+
+int
+#ifdef __BORLANDC__
+_RTLENTRYF
+#endif
+smsg __ARGS((char_u *, long, long, long,
+			long, long, long, long, long, long, long));
+int
+#ifdef __BORLANDC__
+_RTLENTRYF
+#endif
+smsg_attr __ARGS((int, char_u *, long, long, long,
+			long, long, long, long, long, long, long));
+
+/* VARARGS */
+    int
+#ifdef __BORLANDC__
+_RTLENTRYF
+#endif
+smsg(s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10)
+    char_u	*s;
+    long	a1, a2, a3, a4, a5, a6, a7, a8, a9, a10;
+{
+    return smsg_attr(0, s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
+}
+
+/* VARARGS */
+    int
+#ifdef __BORLANDC__
+_RTLENTRYF
+#endif
+smsg_attr(attr, s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10)
+    int		attr;
+    char_u	*s;
+    long	a1, a2, a3, a4, a5, a6, a7, a8, a9, a10;
+{
+    sprintf((char *)IObuff, (char *)s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
+    return msg_attr(IObuff, attr);
+}
+
+# else /* HAVE_STDARG_H */
+
+    int
+#ifdef __BORLANDC__
+_RTLENTRYF
+#endif
+smsg(char_u *s, ...)
+{
+    va_list arglist;
+
+    va_start(arglist, s);
+# ifdef HAVE_VSNPRINTF
+    vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist);
+# else
+    vsprintf((char *)IObuff, (char *)s, arglist);
+# endif
+    va_end(arglist);
+    return msg(IObuff);
+}
+
+    int
+#ifdef __BORLANDC__
+_RTLENTRYF
+#endif
+smsg_attr(int attr, char_u *s, ...)
+{
+    va_list arglist;
+
+    va_start(arglist, s);
+# ifdef HAVE_VSNPRINTF
+    vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist);
+# else
+    vsprintf((char *)IObuff, (char *)s, arglist);
+# endif
+    va_end(arglist);
+    return msg_attr(IObuff, attr);
+}
+
+# endif /* HAVE_STDARG_H */
+#endif
+
+/*
+ * Remember the last sourcing name/lnum used in an error message, so that it
+ * isn't printed each time when it didn't change.
+ */
+static int	last_sourcing_lnum = 0;
+static char_u   *last_sourcing_name = NULL;
+
+/*
+ * Reset the last used sourcing name/lnum.  Makes sure it is displayed again
+ * for the next error message;
+ */
+    static void
+reset_last_sourcing()
+{
+    vim_free(last_sourcing_name);
+    last_sourcing_name = NULL;
+    last_sourcing_lnum = 0;
+}
+
+/*
+ * Get the message about the source, as used for an error message.
+ * Returns an allocated string with room for one more character.
+ * Returns NULL when no message is to be given.
+ */
+    static char_u *
+get_emsg_source(other)
+    int		other;	/* TRUE when "sourcing_name" differs from last time */
+{
+    char_u	*Buf, *p;
+
+    if (sourcing_name != NULL && other)
+    {
+	p = (char_u *)_("Error detected while processing %s:");
+	Buf = alloc((unsigned)(STRLEN(sourcing_name) + STRLEN(p)));
+	if (Buf != NULL)
+	    sprintf((char *)Buf, (char *)p, sourcing_name);
+	return Buf;
+    }
+    return NULL;
+}
+
+/*
+ * Get the message about the source lnum, as used for an error message.
+ * Returns an allocated string with room for one more character.
+ * Returns NULL when no message is to be given.
+ */
+    static char_u *
+get_emsg_lnum(other)
+    int		other;	/* TRUE when "sourcing_name" differs from last time */
+{
+    char_u	*Buf, *p;
+
+    /* lnum is 0 when executing a command from the command line
+     * argument, we don't want a line number then */
+    if (sourcing_name != NULL
+	    && (other || sourcing_lnum != last_sourcing_lnum)
+	    && sourcing_lnum != 0)
+    {
+	p = (char_u *)_("line %4ld:");
+	Buf = alloc((unsigned)(STRLEN(p) + 20));
+	if (Buf != NULL)
+	    sprintf((char *)Buf, (char *)p, (long)sourcing_lnum);
+	return Buf;
+    }
+    return NULL;
+}
+
+/*
+ * emsg() - display an error message
+ *
+ * Rings the bell, if appropriate, and calls message() to do the real work
+ * When terminal not initialized (yet) mch_errmsg(..) is used.
+ *
+ * return TRUE if wait_return not called
+ */
+    int
+emsg(s)
+    char_u	*s;
+{
+    int		attr;
+    int		other_sourcing_name;
+    char_u	*p;
+#ifdef FEAT_EVAL
+    int		ignore = FALSE;
+    int		severe;
+#endif
+
+    called_emsg = TRUE;
+
+    /*
+     * If "emsg_severe" is TRUE: When an error exception is to be thrown, prefer
+     * this message over previous messages for the same command.
+     */
+#ifdef FEAT_EVAL
+    severe = emsg_severe;
+    emsg_severe = FALSE;
+#endif
+
+    /*
+     * If "emsg_off" is set: no error messages at the moment.
+     * If 'debug' is set: do error message anyway, but without side effects.
+     * If "emsg_skip" is set: never do error messages.
+     */
+    if ((emsg_off > 0 && *p_debug == NUL)
+#ifdef FEAT_EVAL
+	    || emsg_skip > 0
+#endif
+	    )
+	return TRUE;
+
+    if (sourcing_name != NULL)
+    {
+	if (last_sourcing_name != NULL)
+	    other_sourcing_name = STRCMP(sourcing_name, last_sourcing_name);
+	else
+	    other_sourcing_name = TRUE;
+    }
+    else
+	other_sourcing_name = FALSE;
+
+    if (!emsg_off)
+    {
+#ifdef FEAT_EVAL
+	/*
+	 * Cause a throw of an error exception if appropriate.  Don't display
+	 * the error message in this case.  (If no matching catch clause will
+	 * be found, the message will be displayed later on.)  "ignore" is set
+	 * when the message should be ignored completely (used for the
+	 * interrupt message).
+	 */
+	if (cause_errthrow(s, severe, &ignore) == TRUE)
+	{
+	    if (!ignore)
+		did_emsg = TRUE;
+	    return TRUE;
+	}
+
+	/* set "v:errmsg", also when using ":silent! cmd" */
+	set_vim_var_string(VV_ERRMSG, s, -1);
+#endif
+
+	/*
+	 * When using ":silent! cmd" ignore error messsages.
+	 * But do write it to the redirection file.
+	 */
+	if (emsg_silent != 0)
+	{
+	    msg_start();
+	    p = get_emsg_source(other_sourcing_name);
+	    if (p != NULL)
+	    {
+		STRCAT(p, "\n");
+		redir_write(p, -1);
+		vim_free(p);
+	    }
+	    p = get_emsg_lnum(other_sourcing_name);
+	    if (p != NULL)
+	    {
+		STRCAT(p, "\n");
+		redir_write(p, -1);
+		vim_free(p);
+	    }
+	    redir_write(s, -1);
+	    return TRUE;
+	}
+
+	/* Reset msg_silent, an error causes messages to be switched back on. */
+	msg_silent = 0;
+	cmd_silent = FALSE;
+
+	if (global_busy)		/* break :global command */
+	    ++global_busy;
+
+	if (p_eb)
+	    beep_flush();		/* also includes flush_buffers() */
+	else
+	    flush_buffers(FALSE);	/* flush internal buffers */
+	did_emsg = TRUE;		/* flag for DoOneCmd() */
+
+#ifdef VIMBUDDY
+	if (sourcing_name == NULL)
+	{
+	    VimBuddyText(s, 2);
+	    return TRUE;
+	}
+#endif
+    }
+
+    emsg_on_display = TRUE;	/* remember there is an error message */
+    ++msg_scroll;		/* don't overwrite a previous message */
+    attr = hl_attr(HLF_E);	/* set highlight mode for error messages */
+    if (msg_scrolled)
+	need_wait_return = TRUE;    /* needed in case emsg() is called after
+				     * wait_return has reset need_wait_return
+				     * and a redraw is expected because
+				     * msg_scrolled is non-zero */
+
+    /*
+     * Display name and line number for the source of the error.
+     */
+    ++no_wait_return;
+    p = get_emsg_source(other_sourcing_name);
+    if (p != NULL)
+    {
+	msg_attr(p, attr);
+	vim_free(p);
+    }
+    p = get_emsg_lnum(other_sourcing_name);
+    if (p != NULL)
+    {
+	msg_attr(p, hl_attr(HLF_N));
+	vim_free(p);
+	last_sourcing_lnum = sourcing_lnum;  /* only once for each line */
+    }
+    --no_wait_return;
+
+    /* remember the last sourcing name printed, also when it's empty */
+    if (sourcing_name == NULL || other_sourcing_name)
+    {
+	vim_free(last_sourcing_name);
+	if (sourcing_name == NULL)
+	    last_sourcing_name = NULL;
+	else
+	    last_sourcing_name = vim_strsave(sourcing_name);
+    }
+    msg_nowait = FALSE;			/* wait for this msg */
+
+    /*
+     * Display the error message itself.
+     */
+    return msg_attr(s, attr);
+}
+
+/*
+ * Print an error message with one "%s" and one string argument.
+ */
+    int
+emsg2(s, a1)
+    char_u *s, *a1;
+{
+    return emsg3(s, a1, NULL);
+}
+
+/*
+ * Print an error message with one or two "%s" and one or two string arguments.
+ */
+    int
+emsg3(s, a1, a2)
+    char_u *s, *a1, *a2;
+{
+    if ((emsg_off > 0 && *p_debug == NUL)
+#ifdef FEAT_EVAL
+	    || emsg_skip > 0
+#endif
+	    )
+	return TRUE;		/* no error messages at the moment */
+
+    /* Check for NULL strings (just in case) */
+    if (a1 == NULL)
+	a1 = (char_u *)"[NULL]";
+    if (a2 == NULL)
+	a2 = (char_u *)"[NULL]";
+
+    /* Check for very long strings (can happen with ":help ^A<CR>"). */
+    if (STRLEN(s) + STRLEN(a1) + STRLEN(a2) >= (size_t)IOSIZE)
+	a1 = a2 = (char_u *)_("[string too long]");
+
+    sprintf((char *)IObuff, (char *)s, (char *)a1, (char *)a2);
+    return emsg(IObuff);
+}
+
+/*
+ * Print an error message with one "%ld" and one long int argument.
+ */
+    int
+emsgn(s, n)
+    char_u	*s;
+    long	n;
+{
+    if ((emsg_off > 0 && *p_debug == NUL)
+#ifdef FEAT_EVAL
+	    || emsg_skip > 0
+#endif
+	    )
+	return TRUE;		/* no error messages at the moment */
+    sprintf((char *)IObuff, (char *)s, n);
+    return emsg(IObuff);
+}
+
+/*
+ * Like msg(), but truncate to a single line if p_shm contains 't', or when
+ * "force" is TRUE.  This truncates in another way as for normal messages.
+ * Careful: The string may be changed by msg_may_trunc()!
+ * Returns a pointer to the printed message, if wait_return() not called.
+ */
+    char_u *
+msg_trunc_attr(s, force, attr)
+    char_u	*s;
+    int		force;
+    int		attr;
+{
+    int		n;
+
+    /* Add message to history before truncating */
+    add_msg_hist(s, -1, attr);
+
+    s = msg_may_trunc(force, s);
+
+    msg_hist_off = TRUE;
+    n = msg_attr(s, attr);
+    msg_hist_off = FALSE;
+
+    if (n)
+	return s;
+    return NULL;
+}
+
+/*
+ * Check if message "s" should be truncated at the start (for filenames).
+ * Return a pointer to where the truncated message starts.
+ * Note: May change the message by replacing a character with '<'.
+ */
+    char_u *
+msg_may_trunc(force, s)
+    int		force;
+    char_u	*s;
+{
+    int		n;
+    int		room;
+
+    room = (int)(Rows - cmdline_row - 1) * Columns + sc_col - 1;
+    if ((force || (shortmess(SHM_TRUNC) && !exmode_active))
+	    && (n = (int)STRLEN(s) - room) > 0)
+    {
+#ifdef FEAT_MBYTE
+	if (has_mbyte)
+	{
+	    int	size = vim_strsize(s);
+
+	    for (n = 0; size >= room; )
+	    {
+		size -= (*mb_ptr2cells)(s + n);
+		n += (*mb_ptr2len_check)(s + n);
+	    }
+	    --n;
+	}
+#endif
+	s += n;
+	*s = '<';
+    }
+    return s;
+}
+
+    static void
+add_msg_hist(s, len, attr)
+    char_u	*s;
+    int		len;		/* -1 for undetermined length */
+    int		attr;
+{
+    struct msg_hist *p;
+
+    if (msg_hist_off || msg_silent != 0)
+	return;
+
+    /* Don't let the message history get too big */
+    while (msg_hist_len > 20)
+    {
+	p = first_msg_hist;
+	first_msg_hist = p->next;
+	vim_free(p->msg);
+	vim_free(p);
+	--msg_hist_len;
+    }
+    /* allocate an entry and add the message at the end of the history */
+    p = (struct msg_hist *)alloc((int)sizeof(struct msg_hist));
+    if (p != NULL)
+    {
+	if (len < 0)
+	    len = (int)STRLEN(s);
+	/* remove leading and trailing newlines */
+	while (len > 0 && *s == '\n')
+	{
+	    ++s;
+	    --len;
+	}
+	while (len > 0 && s[len - 1] == '\n')
+	    --len;
+	p->msg = vim_strnsave(s, len);
+	p->next = NULL;
+	p->attr = attr;
+	if (last_msg_hist != NULL)
+	    last_msg_hist->next = p;
+	last_msg_hist = p;
+	if (first_msg_hist == NULL)
+	    first_msg_hist = last_msg_hist;
+	++msg_hist_len;
+    }
+}
+
+/*
+ * ":messages" command.
+ */
+/*ARGSUSED*/
+    void
+ex_messages(eap)
+    exarg_T	*eap;
+{
+    struct msg_hist *p;
+    char_u	    *s;
+
+    msg_hist_off = TRUE;
+
+    s = mch_getenv((char_u *)"LANG");
+    if (s != NULL && *s != NUL)
+	msg_attr((char_u *)
+		_("Messages maintainer: Bram Moolenaar <Bram@vim.org>"),
+		hl_attr(HLF_T));
+
+    for (p = first_msg_hist; p != NULL; p = p->next)
+	if (p->msg != NULL)
+	    msg_attr(p->msg, p->attr);
+
+    msg_hist_off = FALSE;
+}
+
+#if defined(FEAT_CON_DIALOG) || defined(PROTO)
+static void msg_end_prompt __ARGS((void));
+
+/*
+ * Call this after prompting the user.  This will avoid a hit-return message
+ * and a delay.
+ */
+    static void
+msg_end_prompt()
+{
+    need_wait_return = FALSE;
+    emsg_on_display = FALSE;
+    cmdline_row = msg_row;
+    msg_col = 0;
+    msg_clr_eos();
+}
+#endif
+
+/*
+ * wait for the user to hit a key (normally a return)
+ * if 'redraw' is TRUE, clear and redraw the screen
+ * if 'redraw' is FALSE, just redraw the screen
+ * if 'redraw' is -1, don't redraw at all
+ */
+    void
+wait_return(redraw)
+    int		redraw;
+{
+    int		c;
+    int		oldState;
+    int		tmpState;
+#ifndef ORG_HITRETURN
+    int		had_got_int;
+#endif
+
+    if (redraw == TRUE)
+	must_redraw = CLEAR;
+
+    /* If using ":silent cmd", don't wait for a return.  Also don't set
+     * need_wait_return to do it later. */
+    if (msg_silent != 0)
+	return;
+
+/*
+ * With the global command (and some others) we only need one return at the
+ * end. Adjust cmdline_row to avoid the next message overwriting the last one.
+ * When inside vgetc(), we can't wait for a typed character at all.
+ */
+    if (vgetc_busy)
+	return;
+    if (no_wait_return)
+    {
+	need_wait_return = TRUE;
+	if (!exmode_active)
+	    cmdline_row = msg_row;
+	return;
+    }
+
+    redir_off = TRUE;		/* don't redirect this message */
+    oldState = State;
+    if (quit_more)
+    {
+	c = CAR;		/* just pretend CR was hit */
+	quit_more = FALSE;
+	got_int = FALSE;
+    }
+    else if (exmode_active)
+    {
+	MSG_PUTS(" ");		/* make sure the cursor is on the right line */
+	c = CAR;		/* no need for a return in ex mode */
+	got_int = FALSE;
+    }
+    else
+    {
+	/* Make sure the hit-return prompt is on screen when 'guioptions' was
+	 * just changed. */
+	screenalloc(FALSE);
+
+	State = HITRETURN;
+#ifdef FEAT_MOUSE
+	setmouse();
+#endif
+#ifdef USE_ON_FLY_SCROLL
+	dont_scroll = TRUE;		/* disallow scrolling here */
+#endif
+	hit_return_msg();
+
+#ifdef ORG_HITRETURN
+	do
+	{
+	    c = safe_vgetc();
+	} while (vim_strchr((char_u *)"\r\n: ", c) == NULL);
+	if (c == ':')			/* this can vi too (but not always!) */
+	    stuffcharReadbuff(c);
+#else
+	do
+	{
+	    /* Remember "got_int", if it is set vgetc() probably returns a
+	     * CTRL-C, but we need to loop then. */
+	    had_got_int = got_int;
+	    c = safe_vgetc();
+	    if (!global_busy)
+		got_int = FALSE;
+#ifdef FEAT_CLIPBOARD
+	    /* Strange way to allow copying (yanking) a modeless selection at
+	     * the hit-enter prompt.  Use CTRL-Y, because the same is used in
+	     * Cmdline-mode and it's harmless when there is no selection. */
+	    if (c == Ctrl_Y && clip_star.state == SELECT_DONE)
+	    {
+		clip_copy_modeless_selection(TRUE);
+		c = K_IGNORE;
+	    }
+#endif
+	} while ((had_got_int && c == Ctrl_C)
+				|| c == K_IGNORE
+#ifdef FEAT_GUI
+				|| c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR
+#endif
+#ifdef FEAT_MOUSE
+				|| c == K_LEFTDRAG   || c == K_LEFTRELEASE
+				|| c == K_MIDDLEDRAG || c == K_MIDDLERELEASE
+				|| c == K_RIGHTDRAG  || c == K_RIGHTRELEASE
+				|| c == K_MOUSEDOWN  || c == K_MOUSEUP
+				|| (!mouse_has(MOUSE_RETURN)
+				    && mouse_row < msg_row
+				    && (c == K_LEFTMOUSE
+					|| c == K_MIDDLEMOUSE
+					|| c == K_RIGHTMOUSE
+					|| c == K_X1MOUSE
+					|| c == K_X2MOUSE))
+#endif
+				);
+	ui_breakcheck();
+#ifdef FEAT_MOUSE
+	/*
+	 * Avoid that the mouse-up event causes visual mode to start.
+	 */
+	if (c == K_LEFTMOUSE || c == K_MIDDLEMOUSE || c == K_RIGHTMOUSE
+					  || c == K_X1MOUSE || c == K_X2MOUSE)
+	    (void)jump_to_mouse(MOUSE_SETPOS, NULL, 0);
+	else
+#endif
+	    if (vim_strchr((char_u *)"\r\n ", c) == NULL && c != Ctrl_C)
+	{
+	    stuffcharReadbuff(c);
+	    do_redraw = TRUE;	    /* need a redraw even though there is
+				       something in the stuff buffer */
+	}
+#endif
+    }
+    redir_off = FALSE;
+
+    /*
+     * If the user hits ':', '?' or '/' we get a command line from the next
+     * line.
+     */
+    if (c == ':' || c == '?' || c == '/')
+    {
+	if (!exmode_active)
+	    cmdline_row = msg_row;
+	skip_redraw = TRUE;	    /* skip redraw once */
+	do_redraw = FALSE;
+    }
+
+    /*
+     * If the window size changed set_shellsize() will redraw the screen.
+     * Otherwise the screen is only redrawn if 'redraw' is set and no ':'
+     * typed.
+     */
+    tmpState = State;
+    State = oldState;		    /* restore State before set_shellsize */
+#ifdef FEAT_MOUSE
+    setmouse();
+#endif
+    msg_check();
+
+#if defined(UNIX) || defined(VMS)
+    /*
+     * When switching screens, we need to output an extra newline on exit.
+     */
+    if (swapping_screen() && !termcap_active)
+	newline_on_exit = TRUE;
+#endif
+
+    need_wait_return = FALSE;
+    did_wait_return = TRUE;
+    emsg_on_display = FALSE;	/* can delete error message now */
+    lines_left = -1;		/* reset lines_left at next msg_start() */
+    reset_last_sourcing();
+    if (keep_msg != NULL && vim_strsize(keep_msg) >=
+				  (Rows - cmdline_row - 1) * Columns + sc_col)
+    {
+	vim_free(keep_msg);
+	keep_msg = NULL;	    /* don't redisplay message, it's too long */
+    }
+
+    if (tmpState == SETWSIZE)	    /* got resize event while in vgetc() */
+    {
+	starttermcap();		    /* start termcap before redrawing */
+	shell_resized();
+    }
+    else if (!skip_redraw
+	    && (redraw == TRUE || (msg_scrolled != 0 && redraw != -1)))
+    {
+	starttermcap();		    /* start termcap before redrawing */
+	redraw_later(VALID);
+    }
+}
+
+/*
+ * Write the hit-return prompt.
+ */
+    static void
+hit_return_msg()
+{
+    if (msg_didout)		    /* start on a new line */
+	msg_putchar('\n');
+    if (got_int)
+	MSG_PUTS(_("Interrupt: "));
+
+#ifdef ORG_HITRETURN
+    MSG_PUTS_ATTR(_("Hit ENTER to continue"), hl_attr(HLF_R));
+#else
+    MSG_PUTS_ATTR(_("Hit ENTER or type command to continue"), hl_attr(HLF_R));
+#endif
+    if (!msg_use_printf())
+	msg_clr_eos();
+}
+
+/*
+ * Set "keep_msg" to "s".  Free the old value and check for NULL pointer.
+ */
+    void
+set_keep_msg(s)
+    char_u	*s;
+{
+    vim_free(keep_msg);
+    if (s != NULL && msg_silent == 0)
+	keep_msg = vim_strsave(s);
+    else
+	keep_msg = NULL;
+}
+
+/*
+ * Prepare for outputting characters in the command line.
+ */
+    void
+msg_start()
+{
+    int		did_return = FALSE;
+
+    vim_free(keep_msg);
+    keep_msg = NULL;			/* don't display old message now */
+    if (!msg_scroll && full_screen)	/* overwrite last message */
+    {
+	msg_row = cmdline_row;
+	msg_col =
+#ifdef FEAT_RIGHTLEFT
+	    cmdmsg_rl ? Columns - 1 :
+#endif
+	    0;
+    }
+    else if (msg_didout)		    /* start message on next line */
+    {
+	msg_putchar('\n');
+	did_return = TRUE;
+	if (exmode_active != EXMODE_NORMAL)
+	    cmdline_row = msg_row;
+    }
+    if (!msg_didany || lines_left < 0)
+	msg_starthere();
+    if (msg_silent == 0)
+    {
+	msg_didout = FALSE;		    /* no output on current line yet */
+	cursor_off();
+    }
+
+    /* when redirecting, may need to start a new line. */
+    if (!did_return)
+	redir_write((char_u *)"\n", -1);
+}
+
+/*
+ * Note that the current msg position is where messages start.
+ */
+    void
+msg_starthere()
+{
+    lines_left = cmdline_row;
+    msg_didany = FALSE;
+}
+
+    void
+msg_putchar(c)
+    int		c;
+{
+    msg_putchar_attr(c, 0);
+}
+
+    void
+msg_putchar_attr(c, attr)
+    int		c;
+    int		attr;
+{
+#ifdef FEAT_MBYTE
+    char_u	buf[MB_MAXBYTES + 1];
+#else
+    char_u	buf[4];
+#endif
+
+    if (IS_SPECIAL(c))
+    {
+	buf[0] = K_SPECIAL;
+	buf[1] = K_SECOND(c);
+	buf[2] = K_THIRD(c);
+	buf[3] = NUL;
+    }
+    else
+    {
+#ifdef FEAT_MBYTE
+	buf[(*mb_char2bytes)(c, buf)] = NUL;
+#else
+	buf[0] = c;
+	buf[1] = NUL;
+#endif
+    }
+    msg_puts_attr(buf, attr);
+}
+
+    void
+msg_outnum(n)
+    long	n;
+{
+    char_u	buf[20];
+
+    sprintf((char *)buf, "%ld", n);
+    msg_puts(buf);
+}
+
+    void
+msg_home_replace(fname)
+    char_u	*fname;
+{
+    msg_home_replace_attr(fname, 0);
+}
+
+#if defined(FEAT_FIND_ID) || defined(PROTO)
+    void
+msg_home_replace_hl(fname)
+    char_u	*fname;
+{
+    msg_home_replace_attr(fname, hl_attr(HLF_D));
+}
+#endif
+
+    static void
+msg_home_replace_attr(fname, attr)
+    char_u  *fname;
+    int	    attr;
+{
+    char_u	*name;
+
+    name = home_replace_save(NULL, fname);
+    if (name != NULL)
+	msg_outtrans_attr(name, attr);
+    vim_free(name);
+}
+
+/*
+ * Output 'len' characters in 'str' (including NULs) with translation
+ * if 'len' is -1, output upto a NUL character.
+ * Use attributes 'attr'.
+ * Return the number of characters it takes on the screen.
+ */
+    int
+msg_outtrans(str)
+    char_u	    *str;
+{
+    return msg_outtrans_attr(str, 0);
+}
+
+    int
+msg_outtrans_attr(str, attr)
+    char_u	*str;
+    int		attr;
+{
+    return msg_outtrans_len_attr(str, (int)STRLEN(str), attr);
+}
+
+    int
+msg_outtrans_len(str, len)
+    char_u	*str;
+    int		len;
+{
+    return msg_outtrans_len_attr(str, len, 0);
+}
+
+/*
+ * Output one character at "p".  Return pointer to the next character.
+ * Handles multi-byte characters.
+ */
+    char_u *
+msg_outtrans_one(p, attr)
+    char_u	*p;
+    int		attr;
+{
+#ifdef FEAT_MBYTE
+    int		l;
+
+    if (has_mbyte && (l = (*mb_ptr2len_check)(p)) > 1)
+    {
+	msg_outtrans_len_attr(p, l, attr);
+	return p + l;
+    }
+#endif
+    msg_puts_attr(transchar_byte(*p), attr);
+    return p + 1;
+}
+
+    int
+msg_outtrans_len_attr(msgstr, len, attr)
+    char_u	*msgstr;
+    int		len;
+    int		attr;
+{
+    int		retval = 0;
+    char_u	*str = msgstr;
+    char_u	*plain_start = msgstr;
+    char_u	*s;
+#ifdef FEAT_MBYTE
+    int		mb_l;
+    int		c;
+#endif
+
+    /* if MSG_HIST flag set, add message to history */
+    if (attr & MSG_HIST)
+    {
+	add_msg_hist(str, len, attr);
+	attr &= ~MSG_HIST;
+    }
+
+#ifdef FEAT_MBYTE
+    /* If the string starts with a composing character first draw a space on
+     * which the composing char can be drawn. */
+    if (enc_utf8 && utf_iscomposing(utf_ptr2char(msgstr)))
+	msg_puts_attr((char_u *)" ", attr);
+#endif
+
+    /*
+     * Go over the string.  Special characters are translated and printed.
+     * Normal characters are printed several at a time.
+     */
+    while (--len >= 0)
+    {
+#ifdef FEAT_MBYTE
+	if (enc_utf8)
+	    /* Don't include composing chars after the end. */
+	    mb_l = utfc_ptr2len_check_len(str, len + 1);
+	else if (has_mbyte)
+	    mb_l = (*mb_ptr2len_check)(str);
+	else
+	    mb_l = 1;
+	if (has_mbyte && mb_l > 1)
+	{
+	    c = (*mb_ptr2char)(str);
+	    if (vim_isprintc(c))
+		/* printable multi-byte char: count the cells. */
+		retval += (*mb_ptr2cells)(str);
+	    else
+	    {
+		/* unprintable multi-byte char: print the printable chars so
+		 * far and the translation of the unprintable char. */
+		if (str > plain_start)
+		    msg_puts_attr_len(plain_start, (int)(str - plain_start),
+									attr);
+		plain_start = str + mb_l;
+		msg_puts_attr(transchar(c), attr == 0 ? hl_attr(HLF_8) : attr);
+		retval += char2cells(c);
+	    }
+	    len -= mb_l - 1;
+	    str += mb_l;
+	}
+	else
+#endif
+	{
+	    s = transchar_byte(*str);
+	    if (s[1] != NUL)
+	    {
+		/* unprintable char: print the printable chars so far and the
+		 * translation of the unprintable char. */
+		if (str > plain_start)
+		    msg_puts_attr_len(plain_start, (int)(str - plain_start),
+									attr);
+		plain_start = str + 1;
+		msg_puts_attr(s, attr == 0 ? hl_attr(HLF_8) : attr);
+	    }
+	    retval += ptr2cells(str);
+	    ++str;
+	}
+    }
+
+    if (str > plain_start)
+	/* print the printable chars at the end */
+	msg_puts_attr_len(plain_start, (int)(str - plain_start), attr);
+
+    return retval;
+}
+
+#if defined(FEAT_QUICKFIX) || defined(PROTO)
+    void
+msg_make(arg)
+    char_u  *arg;
+{
+    int	    i;
+    static char_u *str = (char_u *)"eeffoc", *rs = (char_u *)"Plon#dqg#vxjduB";
+
+    arg = skipwhite(arg);
+    for (i = 5; *arg && i >= 0; --i)
+	if (*arg++ != str[i])
+	    break;
+    if (i < 0)
+    {
+	msg_putchar('\n');
+	for (i = 0; rs[i]; ++i)
+	    msg_putchar(rs[i] - 3);
+    }
+}
+#endif
+
+/*
+ * Output the string 'str' upto a NUL character.
+ * Return the number of characters it takes on the screen.
+ *
+ * If K_SPECIAL is encountered, then it is taken in conjunction with the
+ * following character and shown as <F1>, <S-Up> etc.  Any other character
+ * which is not printable shown in <> form.
+ * If 'from' is TRUE (lhs of a mapping), a space is shown as <Space>.
+ * If a character is displayed in one of these special ways, is also
+ * highlighted (its highlight name is '8' in the p_hl variable).
+ * Otherwise characters are not highlighted.
+ * This function is used to show mappings, where we want to see how to type
+ * the character/string -- webb
+ */
+    int
+msg_outtrans_special(strstart, from)
+    char_u	*strstart;
+    int		from;	/* TRUE for lhs of a mapping */
+{
+    char_u	*str = strstart;
+    int		retval = 0;
+    char_u	*string;
+    int		attr;
+    int		len;
+
+    attr = hl_attr(HLF_8);
+    while (*str != NUL)
+    {
+	/* Leading and trailing spaces need to be displayed in <> form. */
+	if ((str == strstart || str[1] == NUL) && *str == ' ')
+	{
+	    string = (char_u *)"<Space>";
+	    ++str;
+	}
+	else
+	    string = str2special(&str, from);
+	len = vim_strsize(string);
+	/* Highlight special keys */
+	msg_puts_attr(string, len > 1
+#ifdef FEAT_MBYTE
+		&& (*mb_ptr2len_check)(string) <= 1
+#endif
+		? attr : 0);
+	retval += len;
+    }
+    return retval;
+}
+
+/*
+ * Return the printable string for the key codes at "*sp".
+ * Used for translating the lhs or rhs of a mapping to printable chars.
+ * Advances "sp" to the next code.
+ */
+    char_u *
+str2special(sp, from)
+    char_u	**sp;
+    int		from;	/* TRUE for lhs of mapping */
+{
+    int			c;
+    static char_u	buf[7];
+    char_u		*str = *sp;
+    int			modifiers = 0;
+    int			special = FALSE;
+
+#ifdef FEAT_MBYTE
+    if (has_mbyte)
+    {
+	char_u	*p;
+
+	/* Try to un-escape a multi-byte character.  Return the un-escaped
+	 * string if it is a multi-byte character. */
+	p = mb_unescape(sp);
+	if (p != NULL)
+	    return p;
+    }
+#endif
+
+    c = *str;
+    if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL)
+    {
+	if (str[1] == KS_MODIFIER)
+	{
+	    modifiers = str[2];
+	    str += 3;
+	    c = *str;
+	}
+	if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL)
+	{
+	    c = TO_SPECIAL(str[1], str[2]);
+	    str += 2;
+	    if (c == K_ZERO)	/* display <Nul> as ^@ */
+		c = NUL;
+	}
+	if (IS_SPECIAL(c) || modifiers)	/* special key */
+	    special = TRUE;
+    }
+    *sp = str + 1;
+
+#ifdef FEAT_MBYTE
+    /* For multi-byte characters check for an illegal byte. */
+    if (has_mbyte && MB_BYTE2LEN(*str) > (*mb_ptr2len_check)(str))
+    {
+	transchar_nonprint(buf, c);
+	return buf;
+    }
+#endif
+
+    /* Make unprintable characters in <> form, also <M-Space> and <Tab>.
+     * Use <Space> only for lhs of a mapping. */
+    if (special || char2cells(c) > 1 || (from && c == ' '))
+	return get_special_key_name(c, modifiers);
+    buf[0] = c;
+    buf[1] = NUL;
+    return buf;
+}
+
+/*
+ * Translate a key sequence into special key names.
+ */
+    void
+str2specialbuf(sp, buf, len)
+    char_u	*sp;
+    char_u	*buf;
+    int		len;
+{
+    char_u	*s;
+
+    *buf = NUL;
+    while (*sp)
+    {
+	s = str2special(&sp, FALSE);
+	if ((int)(STRLEN(s) + STRLEN(buf)) < len)
+	    STRCAT(buf, s);
+    }
+}
+
+/*
+ * print line for :print or :list command
+ */
+    void
+msg_prt_line(s)
+    char_u	*s;
+{
+    int		c;
+    int		col = 0;
+    int		n_extra = 0;
+    int		c_extra = 0;
+    char_u	*p_extra = NULL;	    /* init to make SASC shut up */
+    int		n;
+    int		attr= 0;
+    char_u	*trail = NULL;
+#ifdef FEAT_MBYTE
+    int		l;
+    char_u	buf[MB_MAXBYTES + 1];
+#endif
+
+    /* find start of trailing whitespace */
+    if (curwin->w_p_list && lcs_trail)
+    {
+	trail = s + STRLEN(s);
+	while (trail > s && vim_iswhite(trail[-1]))
+	    --trail;
+    }
+
+    /* output a space for an empty line, otherwise the line will be
+     * overwritten */
+    if (*s == NUL && !(curwin->w_p_list && lcs_eol != NUL))
+	msg_putchar(' ');
+
+    for (;;)
+    {
+	if (n_extra)
+	{
+	    --n_extra;
+	    if (c_extra)
+		c = c_extra;
+	    else
+		c = *p_extra++;
+	}
+#ifdef FEAT_MBYTE
+	else if (has_mbyte && (l = (*mb_ptr2len_check)(s)) > 1)
+	{
+	    col += (*mb_ptr2cells)(s);
+	    mch_memmove(buf, s, (size_t)l);
+	    buf[l] = NUL;
+	    msg_puts_attr(buf, attr);
+	    s += l;
+	    continue;
+	}
+#endif
+	else
+	{
+	    attr = 0;
+	    c = *s++;
+	    if (c == TAB && (!curwin->w_p_list || lcs_tab1))
+	    {
+		/* tab amount depends on current column */
+		n_extra = curbuf->b_p_ts - col % curbuf->b_p_ts - 1;
+		if (!curwin->w_p_list)
+		{
+		    c = ' ';
+		    c_extra = ' ';
+		}
+		else
+		{
+		    c = lcs_tab1;
+		    c_extra = lcs_tab2;
+		    attr = hl_attr(HLF_8);
+		}
+	    }
+	    else if (c == NUL && curwin->w_p_list && lcs_eol != NUL)
+	    {
+		p_extra = (char_u *)"";
+		c_extra = NUL;
+		n_extra = 1;
+		c = lcs_eol;
+		attr = hl_attr(HLF_AT);
+		--s;
+	    }
+	    else if (c != NUL && (n = byte2cells(c)) > 1)
+	    {
+		n_extra = n - 1;
+		p_extra = transchar_byte(c);
+		c_extra = NUL;
+		c = *p_extra++;
+	    }
+	    else if (c == ' ' && trail != NULL && s > trail)
+	    {
+		c = lcs_trail;
+		attr = hl_attr(HLF_8);
+	    }
+	}
+
+	if (c == NUL)
+	    break;
+
+	msg_putchar_attr(c, attr);
+	col++;
+    }
+    msg_clr_eos();
+}
+
+#ifdef FEAT_MBYTE
+/*
+ * Use screen_puts() to output one multi-byte character.
+ * Return the pointer "s" advanced to the next character.
+ */
+    static char_u *
+screen_puts_mbyte(s, l, attr)
+    char_u	*s;
+    int		l;
+    int		attr;
+{
+    int		cw;
+
+    msg_didout = TRUE;		/* remember that line is not empty */
+    cw = (*mb_ptr2cells)(s);
+    if (cw > 1 && (
+#ifdef FEAT_RIGHTLEFT
+		cmdmsg_rl ? msg_col <= 1 :
+#endif
+		msg_col == Columns - 1))
+    {
+	/* Doesn't fit, print a highlighted '>' to fill it up. */
+	msg_screen_putchar('>', hl_attr(HLF_AT));
+	return s;
+    }
+
+    screen_puts_len(s, l, msg_row, msg_col, attr);
+#ifdef FEAT_RIGHTLEFT
+    if (cmdmsg_rl)
+    {
+	msg_col -= cw;
+	if (msg_col == 0)
+	{
+	    msg_col = Columns;
+	    ++msg_row;
+	}
+    }
+    else
+#endif
+    {
+	msg_col += cw;
+	if (msg_col >= Columns)
+	{
+	    msg_col = 0;
+	    ++msg_row;
+	}
+    }
+    return s + l;
+}
+#endif
+
+/*
+ * Output a string to the screen at position msg_row, msg_col.
+ * Update msg_row and msg_col for the next message.
+ */
+    void
+msg_puts(s)
+    char_u	*s;
+{
+    msg_puts_attr(s, 0);
+}
+
+    void
+msg_puts_title(s)
+    char_u	*s;
+{
+    msg_puts_attr(s, hl_attr(HLF_T));
+}
+
+#if defined(FEAT_CSCOPE) || defined(PROTO)
+/*
+ * if printing a string will exceed the screen width, print "..." in the
+ * middle.
+ */
+    void
+msg_puts_long(longstr)
+    char_u	*longstr;
+{
+    msg_puts_long_len_attr(longstr, (int)strlen((char *)longstr), 0);
+}
+#endif
+
+/*
+ * Show a message in such a way that it always fits in the line.  Cut out a
+ * part in the middle and replace it with "..." when necessary.
+ * Does not handle multi-byte characters!
+ */
+    void
+msg_puts_long_attr(longstr, attr)
+    char_u	*longstr;
+    int		attr;
+{
+    msg_puts_long_len_attr(longstr, (int)strlen((char *)longstr), attr);
+}
+
+    void
+msg_puts_long_len_attr(longstr, len, attr)
+    char_u	*longstr;
+    int		len;
+    int		attr;
+{
+    int		slen = len;
+    int		room;
+
+    room = Columns - msg_col;
+    if (len > room && room >= 20)
+    {
+	slen = (room - 3) / 2;
+	msg_outtrans_len_attr(longstr, slen, attr);
+	msg_puts_attr((char_u *)"...", hl_attr(HLF_8));
+    }
+    msg_outtrans_len_attr(longstr + len - slen, slen, attr);
+}
+
+/*
+ * Basic function for writing a message with highlight attributes.
+ */
+    void
+msg_puts_attr(s, attr)
+    char_u	*s;
+    int		attr;
+{
+    msg_puts_attr_len(s, -1, attr);
+}
+
+/*
+ * Like msg_puts_attr(), but with a maximum length "maxlen" (in bytes).
+ * When "maxlen" is -1 there is no maximum length.
+ * When "maxlen" is >= 0 the message is not put in the history.
+ */
+    static void
+msg_puts_attr_len(str, maxlen, attr)
+    char_u	*str;
+    int		maxlen;
+    int		attr;
+{
+    int		oldState;
+    char_u	*s = str;
+    char_u	*p;
+    char_u	buf[4];
+    char_u	*t_s = str;	/* string from "t_s" to "s" is still todo */
+    int		t_col = 0;	/* screen cells todo, 0 when "t_s" not used */
+#ifdef FEAT_MBYTE
+    int		l;
+    int		cw;
+#endif
+    int		c;
+
+    /*
+     * If redirection is on, also write to the redirection file.
+     */
+    redir_write(s, maxlen);
+
+    /*
+     * Don't print anything when using ":silent cmd".
+     */
+    if (msg_silent != 0)
+	return;
+
+    /* if MSG_HIST flag set, add message to history */
+    if ((attr & MSG_HIST) && maxlen < 0)
+    {
+	add_msg_hist(s, -1, attr);
+	attr &= ~MSG_HIST;
+    }
+
+    /*
+     * When writing something to the screen after it has scrolled, requires a
+     * wait-return prompt later.  Needed when scrolling, resetting
+     * need_wait_return after some prompt, and then outputting something
+     * without scrolling
+     */
+    if (msg_scrolled && !msg_scrolled_ign)
+	need_wait_return = TRUE;
+    msg_didany = TRUE;		/* remember that something was outputted */
+
+    /*
+     * If there is no valid screen, use fprintf so we can see error messages.
+     * If termcap is not active, we may be writing in an alternate console
+     * window, cursor positioning may not work correctly (window size may be
+     * different, e.g. for Win32 console) or we just don't know where the
+     * cursor is.
+     */
+    if (msg_use_printf())
+    {
+#ifdef WIN3264
+	if (!(silent_mode && p_verbose == 0))
+	    mch_settmode(TMODE_COOK);	/* handle '\r' and '\n' correctly */
+#endif
+	while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen))
+	{
+	    if (!(silent_mode && p_verbose == 0))
+	    {
+		p = &buf[0];
+		/* NL --> CR NL translation (for Unix, not for "--version") */
+		/* NL --> CR translation (for Mac) */
+		if (*s == '\n' && !info_message)
+		    *p++ = '\r';
+#if defined(USE_CR) && !defined(MACOS_X_UNIX)
+		else
+#endif
+		    *p++ = *s;
+		*p = '\0';
+		if (info_message)	/* informative message, not an error */
+		    mch_msg((char *)buf);
+		else
+		    mch_errmsg((char *)buf);
+	    }
+
+	    /* primitive way to compute the current column */
+#ifdef FEAT_RIGHTLEFT
+	    if (cmdmsg_rl)
+	    {
+		if (*s == '\r' || *s == '\n')
+		    msg_col = Columns - 1;
+		else
+		    --msg_col;
+	    }
+	    else
+#endif
+	    {
+		if (*s == '\r' || *s == '\n')
+		    msg_col = 0;
+		else
+		    ++msg_col;
+	    }
+	    ++s;
+	}
+	msg_didout = TRUE;	    /* assume that line is not empty */
+
+#ifdef WIN3264
+	if (!(silent_mode && p_verbose == 0))
+	    mch_settmode(TMODE_RAW);
+#endif
+	return;
+    }
+
+    did_wait_return = FALSE;
+    while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen))
+    {
+	/*
+	 * The screen is scrolled up when:
+	 * - When outputting a newline in the last row
+	 * - when outputting a character in the last column of the last row
+	 *   (some terminals scroll automatically, some don't. To avoid
+	 *   problems we scroll ourselves)
+	 */
+	if (msg_row >= Rows - 1
+		&& (*s == '\n'
+		    || (
+#ifdef FEAT_RIGHTLEFT
+		    cmdmsg_rl
+		    ? (
+			msg_col <= 1
+			|| (*s == TAB && msg_col <= 7)
+# ifdef FEAT_MBYTE
+			|| (has_mbyte && (*mb_ptr2cells)(s) > 1 && msg_col <= 2)
+# endif
+		      )
+		    :
+#endif
+		      (msg_col + t_col >= Columns - 1
+		       || (*s == TAB && msg_col + t_col >= ((Columns - 1) & ~7))
+# ifdef FEAT_MBYTE
+		       || (has_mbyte && (*mb_ptr2cells)(s) > 1
+					    && msg_col + t_col >= Columns - 2)
+# endif
+		      ))))
+	{
+	    if (t_col > 0)
+	    {
+		/* output postponed text */
+		t_puts(t_col, t_s, s, attr);
+		t_col = 0;
+	    }
+
+	    /* When no more prompt an no more room, truncate here */
+	    if (msg_no_more && lines_left == 0)
+		break;
+#ifdef FEAT_GUI
+	    /* Remove the cursor before scrolling, ScreenLines[] is going to
+	     * become invalid. */
+	    if (gui.in_use)
+		gui_undraw_cursor();
+#endif
+	    /* scrolling up always works */
+	    screen_del_lines(0, 0, 1, (int)Rows, TRUE, NULL);
+
+	    if (!can_clear((char_u *)" "))
+	    {
+		/* Scrolling up doesn't result in the right background.  Set
+		 * the background here.  It's not efficient, but avoids that
+		 * we have to do it all over the code. */
+		screen_fill((int)Rows - 1, (int)Rows, 0,
+						   (int)Columns, ' ', ' ', 0);
+
+		/* Also clear the last char of the last but one line if it was
+		 * not cleared before to avoid a scroll-up. */
+		if (ScreenAttrs[LineOffset[Rows - 2] + Columns - 1]
+							       == (sattr_T)-1)
+		    screen_fill((int)Rows - 2, (int)Rows - 1,
+				 (int)Columns - 1, (int)Columns, ' ', ' ', 0);
+	    }
+
+	    msg_row = Rows - 2;
+	    if (msg_col >= Columns)	/* can happen after screen resize */
+		msg_col = Columns - 1;
+
+	    ++msg_scrolled;
+	    need_wait_return = TRUE;	/* may need wait_return in main() */
+	    if (must_redraw < VALID)
+		must_redraw = VALID;
+	    redraw_cmdline = TRUE;
+	    if (cmdline_row > 0 && !exmode_active)
+		--cmdline_row;
+
+	    /*
+	     * if screen is completely filled wait for a character
+	     */
+	    if (p_more && --lines_left == 0 && State != HITRETURN
+					    && !msg_no_more && !exmode_active)
+	    {
+		oldState = State;
+		State = ASKMORE;
+#ifdef FEAT_MOUSE
+		setmouse();
+#endif
+		msg_moremsg(FALSE);
+		for (;;)
+		{
+		    /*
+		     * Get a typed character directly from the user.
+		     */
+		    c = get_keystroke();
+
+#if defined(FEAT_MENU) && defined(FEAT_GUI)
+		    if (c == K_MENU)
+		    {
+			int idx = get_menu_index(current_menu, ASKMORE);
+
+			/* Used a menu.  If it starts with CTRL-Y, it must
+			 * be a "Copy" for the clipboard.  Otherwise
+			 * assume that we end */
+			if (idx == MENU_INDEX_INVALID)
+			    continue;
+			c = *current_menu->strings[idx];
+			if (c != NUL && current_menu->strings[idx][1] != NUL)
+			    ins_typebuf(current_menu->strings[idx] + 1,
+				    current_menu->noremap[idx], 0, TRUE,
+				    current_menu->silent[idx]);
+		    }
+#endif
+
+		    switch (c)
+		    {
+		    case BS:
+		    case 'k':
+		    case K_UP:
+			if (!more_back_used)
+			{
+			    msg_moremsg(TRUE);
+			    continue;
+			}
+			more_back = 1;
+			lines_left = 1;
+			break;
+		    case CAR:		/* one extra line */
+		    case NL:
+		    case 'j':
+		    case K_DOWN:
+			lines_left = 1;
+			break;
+		    case ':':		/* start new command line */
+#ifdef FEAT_CON_DIALOG
+			if (!confirm_msg_used)
+#endif
+			{
+			    /* Since got_int is set all typeahead will be
+			     * flushed, but we want to keep this ':', remember
+			     * that in a special way. */
+			    typeahead_noflush(':');
+			    cmdline_row = Rows - 1;   /* put ':' on this line */
+			    skip_redraw = TRUE;	      /* skip redraw once */
+			    need_wait_return = FALSE; /* don't wait in main() */
+			}
+			/*FALLTHROUGH*/
+		    case 'q':		/* quit */
+		    case Ctrl_C:
+		    case ESC:
+#ifdef FEAT_CON_DIALOG
+			if (confirm_msg_used)
+			{
+			    /* Jump to the choices of the dialog. */
+			    s = confirm_msg_tail;
+			    lines_left = Rows - 1;
+			}
+			else
+#endif
+			{
+			    got_int = TRUE;
+			    quit_more = TRUE;
+			}
+			break;
+		    case 'u':		/* Up half a page */
+		    case K_PAGEUP:
+			if (!more_back_used)
+			{
+			    msg_moremsg(TRUE);
+			    continue;
+			}
+			more_back = Rows / 2;
+			/*FALLTHROUGH*/
+		    case 'd':		/* Down half a page */
+			lines_left = Rows / 2;
+			break;
+		    case 'b':		/* one page back */
+			if (!more_back_used)
+			{
+			    msg_moremsg(TRUE);
+			    continue;
+			}
+			more_back = Rows - 1;
+			/*FALLTHROUGH*/
+		    case ' ':		/* one extra page */
+		    case K_PAGEDOWN:
+		    case K_LEFTMOUSE:
+			lines_left = Rows - 1;
+			break;
+
+#ifdef FEAT_CLIPBOARD
+		    case Ctrl_Y:
+			/* Strange way to allow copying (yanking) a modeless
+			 * selection at the more prompt.  Use CTRL-Y,
+			 * because the same is used in Cmdline-mode and at the
+			 * hit-enter prompt.  However, scrolling one line up
+			 * might be expected... */
+			if (clip_star.state == SELECT_DONE)
+			    clip_copy_modeless_selection(TRUE);
+			continue;
+#endif
+		    default:		/* no valid response */
+			msg_moremsg(TRUE);
+			continue;
+		    }
+		    break;
+		}
+
+		/* clear the --more-- message */
+		screen_fill((int)Rows - 1, (int)Rows,
+						0, (int)Columns, ' ', ' ', 0);
+		State = oldState;
+#ifdef FEAT_MOUSE
+		setmouse();
+#endif
+		if (quit_more)
+		{
+		    msg_row = Rows - 1;
+		    msg_col = 0;
+		    return;	    /* the string is not displayed! */
+		}
+#ifdef FEAT_RIGHTLEFT
+		if (cmdmsg_rl)
+		    msg_col = Columns - 1;
+#endif
+	    }
+	}
+
+	if (t_col > 0
+		&& (vim_strchr((char_u *)"\n\r\b\t", *s) != NULL
+		    || *s == BELL
+		    || msg_col + t_col >= Columns
+#ifdef FEAT_MBYTE
+		    || (has_mbyte && (*mb_ptr2cells)(s) > 1
+					    && msg_col + t_col >= Columns - 1)
+#endif
+		    ))
+	{
+	    /* output any postponed text */
+	    t_puts(t_col, t_s, s, attr);
+	    t_col = 0;
+	}
+
+	if (*s == '\n')		    /* go to next line */
+	{
+	    msg_didout = FALSE;	    /* remember that line is empty */
+	    msg_col = 0;
+	    if (++msg_row >= Rows)  /* safety check */
+		msg_row = Rows - 1;
+	}
+	else if (*s == '\r')	    /* go to column 0 */
+	{
+	    msg_col = 0;
+	}
+	else if (*s == '\b')	    /* go to previous char */
+	{
+	    if (msg_col)
+		--msg_col;
+	}
+	else if (*s == TAB)	    /* translate into spaces */
+	{
+	    do
+		msg_screen_putchar(' ', attr);
+	    while (msg_col & 7);
+	}
+	else if (*s == BELL)	    /* beep (from ":sh") */
+	    vim_beep();
+	else
+	{
+#ifdef FEAT_MBYTE
+	    if (has_mbyte)
+	    {
+		cw = (*mb_ptr2cells)(s);
+		if (enc_utf8 && maxlen >= 0)
+		    /* avoid including composing chars after the end */
+		    l = utfc_ptr2len_check_len(s, (int)((str + maxlen) - s));
+		else
+		    l = (*mb_ptr2len_check)(s);
+	    }
+	    else
+	    {
+		cw = 1;
+		l = 1;
+	    }
+#endif
+	    /* When drawing from right to left or when a double-wide character
+	     * doesn't fit, draw a single character here.  Otherwise collect
+	     * characters and draw them all at once later. */
+#if defined(FEAT_RIGHTLEFT) || defined(FEAT_MBYTE)
+	    if (
+# ifdef FEAT_RIGHTLEFT
+		    cmdmsg_rl
+#  ifdef FEAT_MBYTE
+		    ||
+#  endif
+# endif
+# ifdef FEAT_MBYTE
+		    (cw > 1 && msg_col + t_col >= Columns - 1)
+# endif
+		    )
+	    {
+# ifdef FEAT_MBYTE
+		if (l > 1)
+		    s = screen_puts_mbyte(s, l, attr) - 1;
+		else
+# endif
+		    msg_screen_putchar(*s, attr);
+	    }
+	    else
+#endif
+	    {
+		/* postpone this character until later */
+		if (t_col == 0)
+		    t_s = s;
+#ifdef FEAT_MBYTE
+		t_col += cw;
+		s += l - 1;
+#else
+		++t_col;
+#endif
+	    }
+	}
+	++s;
+    }
+
+    /* output any postponed text */
+    if (t_col > 0)
+	t_puts(t_col, t_s, s, attr);
+
+    msg_check();
+}
+
+/*
+ * Output any postponed text for msg_puts_attr_len().
+ */
+    static void
+t_puts(t_col, t_s, s, attr)
+    int		t_col;
+    char_u	*t_s;
+    char_u	*s;
+    int		attr;
+{
+    /* output postponed text */
+    msg_didout = TRUE;		/* remember that line is not empty */
+    screen_puts_len(t_s, (int)(s - t_s), msg_row, msg_col, attr);
+    msg_col += t_col;
+#ifdef FEAT_MBYTE
+    /* If the string starts with a composing character don't increment the
+     * column position for it. */
+    if (enc_utf8 && utf_iscomposing(utf_ptr2char(t_s)))
+	--msg_col;
+#endif
+    if (msg_col >= Columns)
+    {
+	msg_col = 0;
+	++msg_row;
+    }
+}
+
+
+/*
+ * Returns TRUE when messages should be printed with mch_errmsg().
+ * This is used when there is no valid screen, so we can see error messages.
+ * If termcap is not active, we may be writing in an alternate console
+ * window, cursor positioning may not work correctly (window size may be
+ * different, e.g. for Win32 console) or we just don't know where the
+ * cursor is.
+ */
+    int
+msg_use_printf()
+{
+    return (!msg_check_screen()
+#if defined(WIN3264) && !defined(FEAT_GUI_MSWIN)
+	    || !termcap_active
+#endif
+	    || (swapping_screen() && !termcap_active)
+	       );
+}
+
+#if defined(USE_MCH_ERRMSG) || defined(PROTO)
+
+#ifdef mch_errmsg
+# undef mch_errmsg
+#endif
+#ifdef mch_msg
+# undef mch_msg
+#endif
+
+/*
+ * Give an error message.  To be used when the screen hasn't been initialized
+ * yet.  When stderr can't be used, collect error messages until the GUI has
+ * started and they can be displayed in a message box.
+ */
+    void
+mch_errmsg(str)
+    char	*str;
+{
+    int		len;
+
+#if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI)
+    /* On Unix use stderr if it's a tty.
+     * When not going to start the GUI also use stderr.
+     * On Mac, when started from Finder, stderr is the console. */
+    if (
+# ifdef UNIX
+#  ifdef MACOS_X_UNIX
+	    (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0)
+#  else
+	    isatty(2)
+#  endif
+#  ifdef FEAT_GUI
+	    ||
+#  endif
+# endif
+# ifdef FEAT_GUI
+	    !(gui.in_use || gui.starting)
+# endif
+	    )
+    {
+	fprintf(stderr, "%s", str);
+	return;
+    }
+#endif
+
+    /* avoid a delay for a message that isn't there */
+    emsg_on_display = FALSE;
+
+    len = (int)STRLEN(str) + 1;
+    if (error_ga.ga_growsize == 0)
+    {
+	error_ga.ga_growsize = 80;
+	error_ga.ga_itemsize = 1;
+    }
+    if (ga_grow(&error_ga, len) == OK)
+    {
+	mch_memmove((char_u *)error_ga.ga_data + error_ga.ga_len,
+							  (char_u *)str, len);
+#ifdef UNIX
+	/* remove CR characters, they are displayed */
+	{
+	    char_u	*p;
+
+	    p = (char_u *)error_ga.ga_data + error_ga.ga_len;
+	    for (;;)
+	    {
+		p = vim_strchr(p, '\r');
+		if (p == NULL)
+		    break;
+		*p = ' ';
+	    }
+	}
+#endif
+	--len;		/* don't count the NUL at the end */
+	error_ga.ga_len += len;
+	error_ga.ga_room -= len;
+    }
+}
+
+/*
+ * Give a message.  To be used when the screen hasn't been initialized yet.
+ * When there is no tty, collect messages until the GUI has started and they
+ * can be displayed in a message box.
+ */
+    void
+mch_msg(str)
+    char	*str;
+{
+#if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI)
+    /* On Unix use stdout if we have a tty.  This allows "vim -h | more" and
+     * uses mch_errmsg() when started from the desktop.
+     * When not going to start the GUI also use stdout.
+     * On Mac, when started from Finder, stderr is the console. */
+    if (
+#  ifdef UNIX
+#   ifdef MACOS_X_UNIX
+	    (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0)
+#   else
+	    isatty(2)
+#    endif
+#   ifdef FEAT_GUI
+	    ||
+#   endif
+#  endif
+#  ifdef FEAT_GUI
+	    !(gui.in_use || gui.starting)
+#  endif
+	    )
+    {
+	printf("%s", str);
+	return;
+    }
+# endif
+    mch_errmsg(str);
+}
+#endif /* USE_MCH_ERRMSG */
+
+/*
+ * Put a character on the screen at the current message position and advance
+ * to the next position.  Only for printable ASCII!
+ */
+    static void
+msg_screen_putchar(c, attr)
+    int		c;
+    int		attr;
+{
+    msg_didout = TRUE;		/* remember that line is not empty */
+    screen_putchar(c, msg_row, msg_col, attr);
+#ifdef FEAT_RIGHTLEFT
+    if (cmdmsg_rl)
+    {
+	if (--msg_col == 0)
+	{
+	    msg_col = Columns;
+	    ++msg_row;
+	}
+    }
+    else
+#endif
+    {
+	if (++msg_col >= Columns)
+	{
+	    msg_col = 0;
+	    ++msg_row;
+	}
+    }
+}
+
+    void
+msg_moremsg(full)
+    int	    full;
+{
+    int	    attr;
+
+    attr = hl_attr(HLF_M);
+    screen_puts((char_u *)_("-- More --"), (int)Rows - 1, 0, attr);
+    if (full)
+	screen_puts(more_back_used
+	    ? (char_u *)_(" (RET/BS: line, SPACE/b: page, d/u: half page, q: quit)")
+	    : (char_u *)_(" (RET: line, SPACE: page, d: half page, q: quit)"),
+	    (int)Rows - 1, 10, attr);
+}
+
+/*
+ * Repeat the message for the current mode: ASKMORE, EXTERNCMD, CONFIRM or
+ * exmode_active.
+ */
+    void
+repeat_message()
+{
+    if (State == ASKMORE)
+    {
+	msg_moremsg(TRUE);	/* display --more-- message again */
+	msg_row = Rows - 1;
+    }
+#ifdef FEAT_CON_DIALOG
+    else if (State == CONFIRM)
+    {
+	display_confirm_msg();	/* display ":confirm" message again */
+	msg_row = Rows - 1;
+    }
+#endif
+    else if (State == EXTERNCMD)
+    {
+	windgoto(msg_row, msg_col); /* put cursor back */
+    }
+    else if (State == HITRETURN || State == SETWSIZE)
+    {
+	hit_return_msg();
+	msg_row = Rows - 1;
+    }
+}
+
+/*
+ * msg_check_screen - check if the screen is initialized.
+ * Also check msg_row and msg_col, if they are too big it may cause a crash.
+ * While starting the GUI the terminal codes will be set for the GUI, but the
+ * output goes to the terminal.  Don't use the terminal codes then.
+ */
+    static int
+msg_check_screen()
+{
+    if (!full_screen || !screen_valid(FALSE))
+	return FALSE;
+
+    if (msg_row >= Rows)
+	msg_row = Rows - 1;
+    if (msg_col >= Columns)
+	msg_col = Columns - 1;
+    return TRUE;
+}
+
+/*
+ * Clear from current message position to end of screen.
+ * Skip this when ":silent" was used, no need to clear for redirection.
+ */
+    void
+msg_clr_eos()
+{
+    if (msg_silent == 0)
+	msg_clr_eos_force();
+}
+
+/*
+ * Clear from current message position to end of screen.
+ * Note: msg_col is not updated, so we remember the end of the message
+ * for msg_check().
+ */
+    void
+msg_clr_eos_force()
+{
+    if (msg_use_printf())
+    {
+	if (full_screen)	/* only when termcap codes are valid */
+	{
+	    if (*T_CD)
+		out_str(T_CD);	/* clear to end of display */
+	    else if (*T_CE)
+		out_str(T_CE);	/* clear to end of line */
+	}
+    }
+    else
+    {
+#ifdef FEAT_RIGHTLEFT
+	if (cmdmsg_rl)
+	{
+	    screen_fill(msg_row, msg_row + 1, 0, msg_col + 1, ' ', ' ', 0);
+	    screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0);
+	}
+	else
+#endif
+	{
+	    screen_fill(msg_row, msg_row + 1, msg_col, (int)Columns,
+								 ' ', ' ', 0);
+	    screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0);
+	}
+    }
+}
+
+/*
+ * Clear the command line.
+ */
+    void
+msg_clr_cmdline()
+{
+    msg_row = cmdline_row;
+    msg_col = 0;
+    msg_clr_eos_force();
+}
+
+/*
+ * end putting a message on the screen
+ * call wait_return if the message does not fit in the available space
+ * return TRUE if wait_return not called.
+ */
+    int
+msg_end()
+{
+    /*
+     * if the string is larger than the window,
+     * or the ruler option is set and we run into it,
+     * we have to redraw the window.
+     * Do not do this if we are abandoning the file or editing the command line.
+     */
+    if (!exiting && need_wait_return && !(State & CMDLINE))
+    {
+	wait_return(FALSE);
+	return FALSE;
+    }
+    out_flush();
+    return TRUE;
+}
+
+/*
+ * If the written message runs into the shown command or ruler, we have to
+ * wait for hit-return and redraw the window later.
+ */
+    void
+msg_check()
+{
+    if (msg_row == Rows - 1 && msg_col >= sc_col)
+    {
+	need_wait_return = TRUE;
+	redraw_cmdline = TRUE;
+    }
+}
+
+/*
+ * May write a string to the redirection file.
+ * When "maxlen" is -1 write the whole string, otherwise up to "maxlen" bytes.
+ */
+    static void
+redir_write(str, maxlen)
+    char_u	*str;
+    int		maxlen;
+{
+    char_u	*s = str;
+    static int	cur_col = 0;
+
+    if ((redir_fd != NULL
+#ifdef FEAT_EVAL
+			  || redir_reg
+#endif
+				       ) && !redir_off)
+    {
+	/* If the string doesn't start with CR or NL, go to msg_col */
+	if (*s != '\n' && *s != '\r')
+	{
+	    while (cur_col < msg_col)
+	    {
+#ifdef FEAT_EVAL
+		if (redir_reg)
+		    write_reg_contents(redir_reg, (char_u *)" ", -1, TRUE);
+		else if (redir_fd)
+#endif
+		    fputs(" ", redir_fd);
+		++cur_col;
+	    }
+	}
+
+#ifdef FEAT_EVAL
+	if (redir_reg)
+	    write_reg_contents(redir_reg, s, maxlen, TRUE);
+#endif
+
+	/* Adjust the current column */
+	while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen))
+	{
+#ifdef FEAT_EVAL
+	    if (!redir_reg && redir_fd != NULL)
+#endif
+		putc(*s, redir_fd);
+	    if (*s == '\r' || *s == '\n')
+		cur_col = 0;
+	    else if (*s == '\t')
+		cur_col += (8 - cur_col % 8);
+	    else
+		++cur_col;
+	    ++s;
+	}
+
+	if (msg_silent != 0)	/* should update msg_col */
+	    msg_col = cur_col;
+    }
+}
+
+/*
+ * Give a warning message (for searching).
+ * Use 'w' highlighting and may repeat the message after redrawing
+ */
+    void
+give_warning(message, hl)
+    char_u  *message;
+    int	    hl;
+{
+    /* Don't do this for ":silent". */
+    if (msg_silent != 0)
+	return;
+
+    /* Don't want a hit-enter prompt here. */
+    ++no_wait_return;
+#ifdef FEAT_EVAL
+    set_vim_var_string(VV_WARNINGMSG, message, -1);
+#endif
+#ifdef VIMBUDDY
+    VimBuddyText(message, 1);
+#else
+    vim_free(keep_msg);
+    keep_msg = NULL;
+    if (hl)
+	keep_msg_attr = hl_attr(HLF_W);
+    else
+	keep_msg_attr = 0;
+    if (msg_attr(message, keep_msg_attr) && msg_scrolled == 0)
+	set_keep_msg(message);
+    msg_didout = FALSE;	    /* overwrite this message */
+    msg_nowait = TRUE;	    /* don't wait for this message */
+    msg_col = 0;
+#endif
+    --no_wait_return;
+}
+
+/*
+ * Advance msg cursor to column "col".
+ */
+    void
+msg_advance(col)
+    int	    col;
+{
+    if (msg_silent != 0)	/* nothing to advance to */
+    {
+	msg_col = col;		/* for redirection, may fill it up later */
+	return;
+    }
+    if (col >= Columns)		/* not enough room */
+	col = Columns - 1;
+    while (msg_col < col)
+	msg_putchar(' ');
+}
+
+#if defined(FEAT_CON_DIALOG) || defined(PROTO)
+/*
+ * Used for "confirm()" function, and the :confirm command prefix.
+ * Versions which haven't got flexible dialogs yet, and console
+ * versions, get this generic handler which uses the command line.
+ *
+ * type  = one of:
+ *	   VIM_QUESTION, VIM_INFO, VIM_WARNING, VIM_ERROR or VIM_GENERIC
+ * title = title string (can be NULL for default)
+ * (neither used in console dialogs at the moment)
+ *
+ * Format of the "buttons" string:
+ * "Button1Name\nButton2Name\nButton3Name"
+ * The first button should normally be the default/accept
+ * The second button should be the 'Cancel' button
+ * Other buttons- use your imagination!
+ * A '&' in a button name becomes a shortcut, so each '&' should be before a
+ * different letter.
+ */
+/* ARGSUSED */
+    int
+do_dialog(type, title, message, buttons, dfltbutton, textfield)
+    int		type;
+    char_u	*title;
+    char_u	*message;
+    char_u	*buttons;
+    int		dfltbutton;
+    char_u	*textfield;	/* IObuff for inputdialog(), NULL otherwise */
+{
+    int		oldState;
+    int		retval = 0;
+    char_u	*hotkeys;
+    int		c;
+    int		i;
+
+#ifndef NO_CONSOLE
+    /* Don't output anything in silent mode ("ex -s") */
+    if (silent_mode)
+	return dfltbutton;   /* return default option */
+#endif
+
+#ifdef FEAT_GUI_DIALOG
+    /* When GUI is running and 'c' not in 'guioptions', use the GUI dialog */
+    if (gui.in_use && vim_strchr(p_go, GO_CONDIALOG) == NULL)
+    {
+	c = gui_mch_dialog(type, title, message, buttons, dfltbutton,
+								   textfield);
+	msg_end_prompt();
+
+	/* Flush output to avoid that further messages and redrawing is done
+	 * in the wrong order. */
+	out_flush();
+	gui_mch_update();
+
+	return c;
+    }
+#endif
+
+    oldState = State;
+    State = CONFIRM;
+#ifdef FEAT_MOUSE
+    setmouse();
+#endif
+
+    /*
+     * Since we wait for a keypress, don't make the
+     * user press RETURN as well afterwards.
+     */
+    ++no_wait_return;
+    hotkeys = msg_show_console_dialog(message, buttons, dfltbutton);
+
+    if (hotkeys != NULL)
+    {
+	for (;;)
+	{
+	    /* Get a typed character directly from the user. */
+	    c = get_keystroke();
+	    switch (c)
+	    {
+	    case CAR:		/* User accepts default option */
+	    case NL:
+		retval = dfltbutton;
+		break;
+	    case Ctrl_C:	/* User aborts/cancels */
+	    case ESC:
+		retval = 0;
+		break;
+	    default:		/* Could be a hotkey? */
+		if (c < 0)	/* special keys are ignored here */
+		    continue;
+		/* Make the character lowercase, as chars in "hotkeys" are. */
+		c = MB_TOLOWER(c);
+		retval = 1;
+		for (i = 0; hotkeys[i]; ++i)
+		{
+#ifdef FEAT_MBYTE
+		    if (has_mbyte)
+		    {
+			if ((*mb_ptr2char)(hotkeys + i) == c)
+			    break;
+			i += (*mb_ptr2len_check)(hotkeys + i) - 1;
+		    }
+		    else
+#endif
+			if (hotkeys[i] == c)
+			    break;
+		    ++retval;
+		}
+		if (hotkeys[i])
+		    break;
+		/* No hotkey match, so keep waiting */
+		continue;
+	    }
+	    break;
+	}
+
+	vim_free(hotkeys);
+    }
+
+    State = oldState;
+#ifdef FEAT_MOUSE
+    setmouse();
+#endif
+    --no_wait_return;
+    msg_end_prompt();
+
+    return retval;
+}
+
+static int copy_char __ARGS((char_u *from, char_u *to, int lowercase));
+
+/*
+ * Copy one character from "*from" to "*to", taking care of multi-byte
+ * characters.  Return the length of the character in bytes.
+ */
+    static int
+copy_char(from, to, lowercase)
+    char_u	*from;
+    char_u	*to;
+    int		lowercase;	/* make character lower case */
+{
+#ifdef FEAT_MBYTE
+    int		len;
+    int		c;
+
+    if (has_mbyte)
+    {
+	if (lowercase)
+	{
+	    c = MB_TOLOWER((*mb_ptr2char)(from));
+	    return (*mb_char2bytes)(c, to);
+	}
+	else
+	{
+	    len = (*mb_ptr2len_check)(from);
+	    mch_memmove(to, from, (size_t)len);
+	    return len;
+	}
+    }
+    else
+#endif
+    {
+	if (lowercase)
+	    *to = (char_u)TOLOWER_LOC(*from);
+	else
+	    *to = *from;
+	return 1;
+    }
+}
+
+/*
+ * Format the dialog string, and display it at the bottom of
+ * the screen. Return a string of hotkey chars (if defined) for
+ * each 'button'. If a button has no hotkey defined, the first character of
+ * the button is used.
+ * The hotkeys can be multi-byte characters, but without combining chars.
+ *
+ * Returns an allocated string with hotkeys, or NULL for error.
+ */
+    static char_u *
+msg_show_console_dialog(message, buttons, dfltbutton)
+    char_u	*message;
+    char_u	*buttons;
+    int		dfltbutton;
+{
+    int		len = 0;
+#ifdef FEAT_MBYTE
+# define HOTK_LEN (has_mbyte ? MB_MAXBYTES : 1)
+#else
+# define HOTK_LEN 1
+#endif
+    int		lenhotkey = HOTK_LEN;	/* count first button */
+    char_u	*hotk = NULL;
+    char_u	*msgp = NULL;
+    char_u	*hotkp = NULL;
+    char_u	*r;
+    int		copy;
+#define HAS_HOTKEY_LEN 30
+    char_u	has_hotkey[HAS_HOTKEY_LEN];
+    int		first_hotkey = FALSE;	/* first char of button is hotkey */
+    int		idx;
+
+    has_hotkey[0] = FALSE;
+
+    /*
+     * First loop: compute the size of memory to allocate.
+     * Second loop: copy to the allocated memory.
+     */
+    for (copy = 0; copy <= 1; ++copy)
+    {
+	r = buttons;
+	idx = 0;
+	while (*r)
+	{
+	    if (*r == DLG_BUTTON_SEP)
+	    {
+		if (copy)
+		{
+		    *msgp++ = ',';
+		    *msgp++ = ' ';	    /* '\n' -> ', ' */
+
+		    /* advance to next hotkey and set default hotkey */
+#ifdef FEAT_MBYTE
+		    if (has_mbyte)
+			hotkp += (*mb_ptr2len_check)(hotkp);
+		    else
+#endif
+			++hotkp;
+		    (void)copy_char(r + 1, hotkp, TRUE);
+		    if (dfltbutton)
+			--dfltbutton;
+
+		    /* If no hotkey is specified first char is used. */
+		    if (idx < HAS_HOTKEY_LEN - 1 && !has_hotkey[++idx])
+			first_hotkey = TRUE;
+		}
+		else
+		{
+		    len += 3;		    /* '\n' -> ', '; 'x' -> '(x)' */
+		    lenhotkey += HOTK_LEN;  /* each button needs a hotkey */
+		    if (idx < HAS_HOTKEY_LEN - 1)
+			has_hotkey[++idx] = FALSE;
+		}
+	    }
+	    else if (*r == DLG_HOTKEY_CHAR || first_hotkey)
+	    {
+		if (*r == DLG_HOTKEY_CHAR)
+		    ++r;
+		first_hotkey = FALSE;
+		if (copy)
+		{
+		    if (*r == DLG_HOTKEY_CHAR)		/* '&&a' -> '&a' */
+			*msgp++ = *r;
+		    else
+		    {
+			/* '&a' -> '[a]' */
+			*msgp++ = (dfltbutton == 1) ? '[' : '(';
+			msgp += copy_char(r, msgp, FALSE);
+			*msgp++ = (dfltbutton == 1) ? ']' : ')';
+
+			/* redefine hotkey */
+			(void)copy_char(r, hotkp, TRUE);
+		    }
+		}
+		else
+		{
+		    ++len;	    /* '&a' -> '[a]' */
+		    if (idx < HAS_HOTKEY_LEN - 1)
+			has_hotkey[idx] = TRUE;
+		}
+	    }
+	    else
+	    {
+		/* everything else copy literally */
+		if (copy)
+		    msgp += copy_char(r, msgp, FALSE);
+	    }
+
+	    /* advance to the next character */
+#ifdef FEAT_MBYTE
+	    if (has_mbyte)
+		r += (*mb_ptr2len_check)(r);
+	    else
+#endif
+		++r;
+	}
+
+	if (copy)
+	{
+	    *msgp++ = ':';
+	    *msgp++ = ' ';
+	    *msgp = NUL;
+#ifdef FEAT_MBYTE
+	    if (has_mbyte)
+		hotkp += (*mb_ptr2len_check)(hotkp);
+	    else
+#endif
+		++hotkp;
+	    *hotkp = NUL;
+	}
+	else
+	{
+	    len += STRLEN(message)
+		    + 2			/* for the NL's */
+		    + STRLEN(buttons)
+		    + 3;		/* for the ": " and NUL */
+	    lenhotkey++;		/* for the NUL */
+
+	    /* If no hotkey is specified first char is used. */
+	    if (!has_hotkey[0])
+	    {
+		first_hotkey = TRUE;
+		len += 2;		/* "x" -> "[x]" */
+	    }
+
+	    /*
+	     * Now allocate and load the strings
+	     */
+	    vim_free(confirm_msg);
+	    confirm_msg = alloc(len);
+	    if (confirm_msg == NULL)
+		return NULL;
+	    *confirm_msg = NUL;
+	    hotk = alloc(lenhotkey);
+	    if (hotk == NULL)
+		return NULL;
+
+	    *confirm_msg = '\n';
+	    STRCPY(confirm_msg + 1, message);
+
+	    msgp = confirm_msg + 1 + STRLEN(message);
+	    hotkp = hotk;
+
+	    /* define first default hotkey */
+	    (void)copy_char(buttons, hotkp, TRUE);
+
+	    /* Remember where the choices start, displaying starts here when
+	     * "hotkp" typed at the more prompt. */
+	    confirm_msg_tail = msgp;
+	    *msgp++ = '\n';
+	}
+    }
+
+    display_confirm_msg();
+    return hotk;
+}
+
+/*
+ * Display the ":confirm" message.  Also called when screen resized.
+ */
+    void
+display_confirm_msg()
+{
+    /* avoid that 'q' at the more prompt truncates the message here */
+    ++confirm_msg_used;
+    if (confirm_msg != NULL)
+	msg_puts_attr(confirm_msg, hl_attr(HLF_M));
+    --confirm_msg_used;
+}
+
+#endif /* FEAT_CON_DIALOG */
+
+#if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG)
+
+    int
+vim_dialog_yesno(type, title, message, dflt)
+    int		type;
+    char_u	*title;
+    char_u	*message;
+    int		dflt;
+{
+    if (do_dialog(type,
+		title == NULL ? (char_u *)_("Question") : title,
+		message,
+		(char_u *)_("&Yes\n&No"), dflt, NULL) == 1)
+	return VIM_YES;
+    return VIM_NO;
+}
+
+    int
+vim_dialog_yesnocancel(type, title, message, dflt)
+    int		type;
+    char_u	*title;
+    char_u	*message;
+    int		dflt;
+{
+    switch (do_dialog(type,
+		title == NULL ? (char_u *)_("Question") : title,
+		message,
+		(char_u *)_("&Yes\n&No\n&Cancel"), dflt, NULL))
+    {
+	case 1: return VIM_YES;
+	case 2: return VIM_NO;
+    }
+    return VIM_CANCEL;
+}
+
+    int
+vim_dialog_yesnoallcancel(type, title, message, dflt)
+    int		type;
+    char_u	*title;
+    char_u	*message;
+    int		dflt;
+{
+    switch (do_dialog(type,
+		title == NULL ? (char_u *)"Question" : title,
+		message,
+		(char_u *)_("&Yes\n&No\nSave &All\n&Discard All\n&Cancel"),
+								  dflt, NULL))
+    {
+	case 1: return VIM_YES;
+	case 2: return VIM_NO;
+	case 3: return VIM_ALL;
+	case 4: return VIM_DISCARDALL;
+    }
+    return VIM_CANCEL;
+}
+
+#endif /* FEAT_GUI_DIALOG || FEAT_CON_DIALOG */
+
+#if defined(FEAT_BROWSE) || defined(PROTO)
+/*
+ * Generic browse function.  Calls gui_mch_browse() when possible.
+ * Later this may pop-up a non-GUI file selector (external command?).
+ */
+    char_u *
+do_browse(saving, title, dflt, ext, initdir, filter, buf)
+    int		saving;		/* write action */
+    char_u	*title;		/* title for the window */
+    char_u	*dflt;		/* default file name (may include directory) */
+    char_u	*ext;		/* extension added */
+    char_u	*initdir;	/* initial directory, NULL for current dir or
+				   when using path from "dflt" */
+    char_u	*filter;	/* file name filter */
+    buf_T	*buf;		/* buffer to read/write for */
+{
+    char_u		*fname;
+    static char_u	*last_dir = NULL;    /* last used directory */
+    char_u		*tofree = NULL;
+    int			save_browse = cmdmod.browse;
+
+    /* Must turn off browse to avoid that autocommands will get the
+     * flag too!  */
+    cmdmod.browse = FALSE;
+
+    if (title == NULL)
+    {
+	if (saving)
+	    title = (char_u *)_("Save File dialog");
+	else
+	    title = (char_u *)_("Open File dialog");
+    }
+
+    /* When no directory specified, use default file name, default dir, buffer
+     * dir, last dir or current dir */
+    if ((initdir == NULL || *initdir == NUL) && dflt != NULL && *dflt != NUL)
+    {
+	if (mch_isdir(dflt))		/* default file name is a directory */
+	{
+	    initdir = dflt;
+	    dflt = NULL;
+	}
+	else if (gettail(dflt) != dflt)	/* default file name includes a path */
+	{
+	    tofree = vim_strsave(dflt);
+	    if (tofree != NULL)
+	    {
+		initdir = tofree;
+		*gettail(initdir) = NUL;
+		dflt = gettail(dflt);
+	    }
+	}
+    }
+
+    if (initdir == NULL || *initdir == NUL)
+    {
+	/* When 'browsedir' is a directory, use it */
+	if (mch_isdir(p_bsdir))
+	    initdir = p_bsdir;
+	/* When saving or 'browsedir' is "buffer", use buffer fname */
+	else if ((saving || *p_bsdir == 'b')
+		&& buf != NULL && buf->b_ffname != NULL)
+	{
+	    if (dflt == NULL || *dflt == NUL)
+		dflt = gettail(curbuf->b_ffname);
+	    tofree = vim_strsave(curbuf->b_ffname);
+	    if (tofree != NULL)
+	    {
+		initdir = tofree;
+		*gettail(initdir) = NUL;
+	    }
+	}
+	/* When 'browsedir' is "last", use dir from last browse */
+	else if (*p_bsdir == 'l')
+	    initdir = last_dir;
+	/* When 'browsedir is "current", use current directory.  This is the
+	 * default already, leave initdir empty. */
+    }
+
+# ifdef FEAT_GUI
+    if (gui.in_use)		/* when this changes, also adjust f_has()! */
+    {
+	if (filter == NULL
+#  ifdef FEAT_EVAL
+		&& (filter = get_var_value((char_u *)"b:browsefilter")) == NULL
+		&& (filter = get_var_value((char_u *)"g:browsefilter")) == NULL
+#  endif
+	)
+	    filter = BROWSE_FILTER_DEFAULT;
+	fname = gui_mch_browse(saving, title, dflt, ext, initdir, filter);
+
+	/* We hang around in the dialog for a while, the user might do some
+	 * things to our files.  The Win32 dialog allows deleting or renaming
+	 * a file, check timestamps. */
+	need_check_timestamps = TRUE;
+	did_check_timestamps = FALSE;
+    }
+    else
+# endif
+    {
+	/* TODO: non-GUI file selector here */
+	EMSG(_("E338: Sorry, no file browser in console mode"));
+	fname = NULL;
+    }
+
+    /* keep the directory for next time */
+    if (fname != NULL)
+    {
+	vim_free(last_dir);
+	last_dir = vim_strsave(fname);
+	if (last_dir != NULL)
+	{
+	    *gettail(last_dir) = NUL;
+	    if (*last_dir == NUL)
+	    {
+		/* filename only returned, must be in current dir */
+		vim_free(last_dir);
+		last_dir = alloc(MAXPATHL);
+		if (last_dir != NULL)
+		    mch_dirname(last_dir, MAXPATHL);
+	    }
+	}
+    }
+
+    vim_free(tofree);
+    cmdmod.browse = save_browse;
+
+    return fname;
+}
+#endif