# HG changeset patch
# User Christian Brabandt <cb@256bit.org>
# Date 1698351304 -7200
# Node ID 664ee4c0daca8545fb16fa3e75321e7727a26a65
# Parent  3966317e1cb4798132e0249223dad42d41c6ca77
patch 9.0.2069: possible to escape bracketed paste mode with Ctrl-C

Commit: https://github.com/vim/vim/commit/67ec6553839f070cd4cc8effa26a9db1750e17b6
Author: David Leadbeater <dgl@dgl.cx>
Date:   Thu Oct 26 22:00:34 2023 +0200

    patch 9.0.2069: possible to escape bracketed paste mode with Ctrl-C

    Problem:  possible to escape bracketed paste mode with Ctrl-C
    Solution: Do not handle Ctrl-C specially when key_protocol
              is in use, makes bracketed paste mode more robust

    When a key protocol is in use Ctrl-C will be sent as an escape sequence,
    but a raw Ctrl-C can be sent when pasting data. Pass this through, so
    that a Ctrl-C can be pasted and won't result in exiting insert mode
    (where the rest of the pasted keys can cause all kind of nasty
    side-effects).

    Many terminals will strip control characters in paste data (and xterm
    will strip ^C since version 388), but this provides some defense in
    depth if users change settings like xterm's allowPasteControls.

    closes: #13398

    Signed-off-by: David Leadbeater <dgl@dgl.cx>
    Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/src/getchar.c b/src/getchar.c
--- a/src/getchar.c
+++ b/src/getchar.c
@@ -2511,7 +2511,7 @@ check_simplify_modifier(int max_offset)
  * modifyOtherKeys level 2 is enabled or the kitty keyboard protocol is
  * enabled.
  */
-    static int
+    int
 key_protocol_enabled(void)
 {
     // If xterm has responded to XTQMODKEYS it overrules seenModifyOtherKeys.
diff --git a/src/proto/getchar.pro b/src/proto/getchar.pro
--- a/src/proto/getchar.pro
+++ b/src/proto/getchar.pro
@@ -51,6 +51,7 @@ void f_getchar(typval_T *argvars, typval
 void f_getcharstr(typval_T *argvars, typval_T *rettv);
 void f_getcharmod(typval_T *argvars, typval_T *rettv);
 void parse_queued_messages(void);
+int key_protocol_enabled(void);
 void vungetc(int c);
 int fix_input_buffer(char_u *buf, int len);
 int input_available(void);
diff --git a/src/ui.c b/src/ui.c
--- a/src/ui.c
+++ b/src/ui.c
@@ -1032,7 +1032,11 @@ fill_input_buf(int exit_on_error UNUSED)
 	    // If a CTRL-C was typed, remove it from the buffer and set
 	    // got_int.  Also recognize CTRL-C with modifyOtherKeys set, lower
 	    // and upper case, in two forms.
-	    if (ctrl_c_interrupts && (inbuf[inbufcount] == 3
+	    // If terminal key protocols are in use, we expect to receive
+	    // Ctrl_C as an escape sequence, ignore a raw Ctrl_C as this could
+	    // be paste data.
+	    if (ctrl_c_interrupts
+			&& ((inbuf[inbufcount] == Ctrl_C && !key_protocol_enabled())
 			|| (len >= 10 && STRNCMP(inbuf + inbufcount,
 						   "\033[27;5;99~", 10) == 0)
 			|| (len >= 10 && STRNCMP(inbuf + inbufcount,
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2069,
+/**/
     2068,
 /**/
     2067,