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

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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>
This commit is contained in:
David Leadbeater
2023-10-26 22:00:34 +02:00
committed by Christian Brabandt
parent 9198c1f2b1
commit 67ec655383
4 changed files with 9 additions and 2 deletions
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2
src/getchar.c
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@@ -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.