Commit: patch 9.1.1383: completion: 'isexpand' option does not handle space char correct

[Christian Brabandt]

patch 9.1.1383: completion: 'isexpand' option does not handle space char correct

Commit: https://github.com/vim/vim/commit/8d0e42b71023144e6db17534da41ffecbd0b655f
Author: glepnir <gleph...@gmail.com>
Date: Mon May 12 20:28:28 2025 +0200

patch 9.1.1383: completion: 'isexpand' option does not handle space char correct

Problem: When a space character is used as a trigger in 'isexpand' option
it doesn't get recognized because skip_to_option_part() skips
spaces after a comma, treating them as option separators
rather than option value (after v9.1.1341)
Solution: manually set the part to a space character (glepnir).

closes: #17305

Signed-off-by: glepnir <gleph...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/insexpand.c b/src/insexpand.c
index bb280fa46..5f5a5b905 100644
--- a/src/insexpand.c
+++ b/src/insexpand.c
@@ -3665,7 +3665,15 @@ f_complete_match(typval_T *argvars, typval_T *rettv)

while (*p != NUL)
{
- int len = copy_option_part(&p, part, MAXPATHL, ",");
+ int len = 0;
+ if (*p == ',' && *(p+1) == ' ' && (*(p+2) == ',' || *(p+2) == NUL))
+ {
+ part[0] = ' ';
+ len = 1;
+ p++;
+ }
+ else
+ len = copy_option_part(&p, part, MAXPATHL, ",");

if (len > 0 && len <= col)
{
diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index f7292ea34..741cc9d9c 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -4504,6 +4504,10 @@ func Test_complete_match()
call feedkeys("Sabc, \<ESC>:let g:result=complete_match()\<CR>", 'tx')
call assert_equal([[4, ',']], g:result)

+ set ise=\ ,=
+ call feedkeys("Sif true \<ESC>:let g:result=complete_match()\<CR>", 'tx')
+ call assert_equal([[8, ' ']], g:result)
+
bw!
unlet g:result
set isexpand&
diff --git a/src/version.c b/src/version.c
index 816ce5c15..4a9ad83dd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 1383,
/**/
1382,
/**/