Commit: patch 9.1.1991: :setlocal changes effective global 'omnifunc'

[Christian Brabandt]

patch 9.1.1991: :setlocal changes effective global 'omnifunc'

Commit: https://github.com/vim/vim/commit/3e82b0ebfe7fe2d87bc7bc843291f13183aac828
Author: zeertzjq <zeer...@outlook.com>
Date: Wed Dec 17 21:34:23 2025 +0100

patch 9.1.1991: :setlocal changes effective global 'omnifunc'

Problem: :setlocal changes effective global 'omnifunc' (Maxim Kim)
Solution: Don't change global callback when using :setlocal (zeertzjq).

fixes: #18948
closes: #18951

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

diff --git a/src/insexpand.c b/src/insexpand.c
index b44f77d53..30a89df96 100644
--- a/src/insexpand.c
+++ b/src/insexpand.c
@@ -3319,14 +3319,21 @@ copy_global_to_buflocal_cb(callback_T *globcb, callback_T *bufcb)
* lambda expression.
*/
char *
-did_set_completefunc(optset_T *args UNUSED)
+did_set_completefunc(optset_T *args)
{
- if (option_set_callback_func(curbuf->b_p_cfu, &cfu_cb) == FAIL)
- return e_invalid_argument;
+ int retval;

- set_buflocal_cfu_callback(curbuf);
+ if (args->os_flags & OPT_LOCAL)
+ retval = option_set_callback_func(args->os_newval.string,
+ &curbuf->b_cfu_cb);
+ else
+ {
+ retval = option_set_callback_func(args->os_newval.string, &cfu_cb);
+ if (retval == OK && !(args->os_flags & OPT_GLOBAL))
+ set_buflocal_cfu_callback(curbuf);
+ }

- return NULL;
+ return retval == FAIL ? e_invalid_argument : NULL;
}

/*
@@ -3348,13 +3355,21 @@ set_buflocal_cfu_callback(buf_T *buf UNUSED)
* lambda expression.
*/
char *
-did_set_omnifunc(optset_T *args UNUSED)
+did_set_omnifunc(optset_T *args)
{
- if (option_set_callback_func(curbuf->b_p_ofu, &ofu_cb) == FAIL)
- return e_invalid_argument;
+ int retval;

- set_buflocal_ofu_callback(curbuf);
- return NULL;
+ if (args->os_flags & OPT_LOCAL)
+ retval = option_set_callback_func(args->os_newval.string,
+ &curbuf->b_ofu_cb);
+ else
+ {
+ retval = option_set_callback_func(args->os_newval.string, &ofu_cb);
+ if (retval == OK && !(args->os_flags & OPT_GLOBAL))
+ set_buflocal_ofu_callback(curbuf);
+ }
+
+ return retval == FAIL ? e_invalid_argument : NULL;
}

/*
diff --git a/src/tag.c b/src/tag.c
index 78d290277..796fd12a9 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -170,22 +170,21 @@ static callback_T tfu_cb; // 'tagfunc' callback function
* a function (string), or function(<name>) or funcref(<name>) or a lambda.
*/
char *
-did_set_tagfunc(optset_T *args UNUSED)
+did_set_tagfunc(optset_T *args)
{
-#ifdef FEAT_EVAL
- free_callback(&tfu_cb);
- free_callback(&curbuf->b_tfu_cb);
-
- if (*curbuf->b_p_tfu == NUL)
- return NULL;
-
- if (option_set_callback_func(curbuf->b_p_tfu, &tfu_cb) == FAIL)
- return e_invalid_argument;
+ int retval;

- copy_callback(&curbuf->b_tfu_cb, &tfu_cb);
-#endif
+ if (args->os_flags & OPT_LOCAL)
+ retval = option_set_callback_func(args->os_newval.string,
+ &curbuf->b_tfu_cb);
+ else
+ {
+ retval = option_set_callback_func(args->os_newval.string, &tfu_cb);
+ if (retval == OK && !(args->os_flags & OPT_GLOBAL))
+ set_buflocal_tfu_callback(curbuf);
+ }

- return NULL;
+ return retval == FAIL ? e_invalid_argument : NULL;
}
#endif

diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index c2b8c67bc..315b81e49 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -2426,6 +2426,35 @@ func Test_completefunc_callback()
call feedkeys("A\<C-X>\<C-U>\<Esc>", 'x')
call assert_equal([[1, ''], [0, 'five']], g:CompleteFunc2Args)
bw!
+
+ #" :setlocal and :setglobal
+ set completefunc&
+ setlocal completefunc=function('g:CompleteFunc1',\ [22])
+ call setline(1, 'sun')
+ LET g:CompleteFunc1Args = []
+ call feedkeys("A\<C-X>\<C-U>\<Esc>", 'x')
+ call assert_equal([[22, 1, ''], [22, 0, 'sun']], g:CompleteFunc1Args)
+ new
+ call setline(1, 'sun')
+ LET g:CompleteFunc1Args = []
+ call assert_fails('call feedkeys("A\<C-X>\<C-U>\<Esc>", "x")', 'E764:')
+ call assert_equal([], g:CompleteFunc1Args)
+ bw!
+ setglobal completefunc=function('g:CompleteFunc1',\ [23])
+ call setline(1, 'sun')
+ call feedkeys("A\<C-X>\<C-U>\<Esc>", 'x')
+ call assert_equal([[22, 1, ''], [22, 0, 'sun']], g:CompleteFunc1Args)
+ new
+ call setline(1, 'sun')
+ LET g:CompleteFunc1Args = []
+ call feedkeys("A\<C-X>\<C-U>\<Esc>", 'x')
+ call assert_equal([[23, 1, ''], [23, 0, 'sun']], g:CompleteFunc1Args)
+ setlocal completefunc&
+ call setline(1, 'sun')
+ LET g:CompleteFunc1Args = []
+ call assert_fails('call feedkeys("A\<C-X>\<C-U>\<Esc>", "x")', 'E764:')
+ call assert_equal([], g:CompleteFunc1Args)
+ :%bw!
END
call v9.CheckLegacyAndVim9Success(lines)

@@ -2700,6 +2729,35 @@ func Test_omnifunc_callback()
call feedkeys("A\<C-X>\<C-O>\<Esc>", 'x')
call assert_equal([[1, ''], [0, 'nine']], g:OmniFunc2Args)
bw!
+
+ #" :setlocal and :setglobal
+ set omnifunc&
+ setlocal omnifunc=function('g:OmniFunc1',\ [22])
+ call setline(1, 'sun')
+ LET g:OmniFunc1Args = []
+ call feedkeys("A\<C-X>\<C-O>\<Esc>", 'x')
+ call assert_equal([[22, 1, ''], [22, 0, 'sun']], g:OmniFunc1Args)
+ new
+ call setline(1, 'sun')
+ LET g:OmniFunc1Args = []
+ call assert_fails('call feedkeys("A\<C-X>\<C-O>\<Esc>", "x")', 'E764:')
+ call assert_equal([], g:OmniFunc1Args)
+ bw!
+ setglobal omnifunc=function('g:OmniFunc1',\ [23])
+ call setline(1, 'sun')
+ call feedkeys("A\<C-X>\<C-O>\<Esc>", 'x')
+ call assert_equal([[22, 1, ''], [22, 0, 'sun']], g:OmniFunc1Args)
+ new
+ call setline(1, 'sun')
+ LET g:OmniFunc1Args = []
+ call feedkeys("A\<C-X>\<C-O>\<Esc>", 'x')
+ call assert_equal([[23, 1, ''], [23, 0, 'sun']], g:OmniFunc1Args)
+ setlocal omnifunc&
+ call setline(1, 'sun')
+ LET g:OmniFunc1Args = []
+ call assert_fails('call feedkeys("A\<C-X>\<C-O>\<Esc>", "x")', 'E764:')
+ call assert_equal([], g:OmniFunc1Args)
+ :%bw!
END
call v9.CheckLegacyAndVim9Success(lines)

diff --git a/src/testdir/test_tagfunc.vim b/src/testdir/test_tagfunc.vim
index 11a105b63..286a54a3c 100644
--- a/src/testdir/test_tagfunc.vim
+++ b/src/testdir/test_tagfunc.vim
@@ -255,13 +255,37 @@ func Test_tagfunc_callback()
call assert_fails("set tagfunc=funcref('abc')", "E700:")

#" set 'tagfunc' to a non-existing function
- LET &tagfunc = function('g:TagFunc2', [21])
+ LET &tagfunc = function('g:TagFunc2')
LET g:TagFunc2Args = []
call assert_fails("set tagfunc=function('NonExistingFunc')", 'E700:')
call assert_fails("LET &tagfunc = function('NonExistingFunc')", 'E700:')
- call assert_fails("tag axb123", 'E426:')
- call assert_equal([], g:TagFunc2Args)
+ call assert_fails("tag axb123", 'E433:')
+ call assert_equal(['axb123', '', {}], g:TagFunc2Args)
bw!
+
+ #" :setlocal and :setglobal
+ set tagfunc&
+ setlocal tagfunc=function('g:TagFunc1',\ [22])
+ LET g:TagFunc1Args = []
+ call assert_fails("tag a22", 'E433:')
+ call assert_equal([22, 'a22', '', {}], g:TagFunc1Args)
+ new
+ LET g:TagFunc1Args = []
+ call assert_fails("tag a22", 'E433:')
+ call assert_equal([], g:TagFunc1Args)
+ bw!
+ setglobal tagfunc=function('g:TagFunc1',\ [23])
+ call assert_fails("tag a22", 'E433:')
+ call assert_equal([22, 'a22', '', {}], g:TagFunc1Args)
+ new
+ LET g:TagFunc1Args = []
+ call assert_fails("tag a23", 'E433:')
+ call assert_equal([23, 'a23', '', {}], g:TagFunc1Args)
+ setlocal tagfunc&
+ LET g:TagFunc1Args = []
+ call assert_fails("tag a23", 'E433:')
+ call assert_equal([], g:TagFunc1Args)
+ :%bw!
END
call v9.CheckLegacyAndVim9Success(lines)

diff --git a/src/version.c b/src/version.c
index a36890701..b18869873 100644
--- a/src/version.c
+++ b/src/version.c
@@ -734,6 +734,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 1991,
/**/
1990,
/**/