Commit: patch 9.1.1072: 'diffopt' "linematch" cannot be used with {n} less than 10

[Christian Brabandt]

patch 9.1.1072: 'diffopt' "linematch" cannot be used with {n} less than 10

Commit: https://github.com/vim/vim/commit/ccd7f454fcac2f99085d4f50e79c111c02741166
Author: zeertzjq <zeer...@outlook.com>
Date: Mon Feb 3 18:49:49 2025 +0100

patch 9.1.1072: 'diffopt' "linematch" cannot be used with {n} less than 10

Problem: 'diffopt' "linematch" cannot be used with {n} less than 10
digits (after v9.1.1022)
Solution: Fix off-by-one error when checking for digit (zeertzjq)

closes: #16577

Signed-off-by: zeertzjq <zeer...@outlook.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/diff.c b/src/diff.c
index 41d61b1b5..d7433349a 100644
--- a/src/diff.c
+++ b/src/diff.c
@@ -2795,7 +2795,7 @@ diffopt_changed(void)
else
return FAIL;
}
- else if (STRNCMP(p, "linematch:", 10) == 0 && VIM_ISDIGIT(p[11]))
+ else if (STRNCMP(p, "linematch:", 10) == 0 && VIM_ISDIGIT(p[10]))
{
p += 10;
linematch_lines_new = getdigits(&p);
diff --git a/src/testdir/gen_opt_test.vim b/src/testdir/gen_opt_test.vim
index 30de28607..2dfb070c8 100644
--- a/src/testdir/gen_opt_test.vim
+++ b/src/testdir/gen_opt_test.vim
@@ -178,9 +178,11 @@ let test_values = {
\ 'icase', 'iwhite', 'iwhiteall', 'horizontal', 'vertical',
\ 'closeoff', 'hiddenoff', 'foldcolumn:0', 'foldcolumn:12',
\ 'followwrap', 'internal', 'indent-heuristic', 'algorithm:myers',
- \ 'algorithm:minimal', 'algorithm:patience',
- \ 'algorithm:histogram', 'icase,iwhite'],
- \ ['xxx', 'foldcolumn:xxx', 'algorithm:xxx', 'algorithm:']],
+ \ 'icase,iwhite', 'algorithm:minimal', 'algorithm:patience',
+ \ 'algorithm:histogram', 'linematch:5'],
+ \ ['xxx', 'foldcolumn:', 'foldcolumn:x', 'foldcolumn:xxx',
+ \ 'linematch:', 'linematch:x', 'linematch:xxx', 'algorithm:',
+ \ 'algorithm:xxx', 'context:', 'context:x', 'context:xxx']],
\ 'display': [['', 'lastline', 'truncate', 'uhex', 'lastline,uhex'],
\ ['xxx']],
\ 'eadirection': [['', 'both', 'ver', 'hor'], ['xxx', 'ver,hor']],
diff --git a/src/version.c b/src/version.c
index b953f905a..dd500d157 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 */
+/**/
+ 1072,
/**/
1071,
/**/