Commit: patch 9.2.0040: completion: preinsert wrong with register completion

[Christian Brabandt]

patch 9.2.0040: completion: preinsert wrong with register completion

Commit: https://github.com/vim/vim/commit/3684ad83d16514c98ef379f76b55815db43bed8b
Author: Girish Palya <giri...@gmail.com>
Date: Sat Feb 21 10:56:26 2026 +0000

patch 9.2.0040: completion: preinsert wrong with register completion

Problem: completion: preinsert wrong with register completion
Solution: Remove preinserted text during register content insertion
(Girish Palya).

fixes: #19329
closes: #19474

Signed-off-by: Girish Palya <giri...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/register.c b/src/register.c
index 2cc840dd5..1f1739160 100644
--- a/src/register.c
+++ b/src/register.c
@@ -1616,6 +1616,9 @@ do_put(
(void)may_get_selection(regname);
#endif

+ // Remove any preinserted text (issue #19329)
+ if (ins_compl_preinsert_effect())
+ ins_compl_delete();

curbuf->b_op_start = curwin->w_cursor; // default for '[ mark
curbuf->b_op_end = curwin->w_cursor; // default for '] mark
diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index 7e92bac69..2796379c9 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -6265,4 +6265,26 @@ func Test_autocomplete_preinsert_null_leader()
delfunc GetState
endfunc

+" Issue #19329: When register contents are inserted, remove preinserted text
+func Test_ins_register_preinsert_autocomplete()
+ func TestOmni(findstart, base)
+ if a:findstart
+ return col(".") - 1
+ endif
+ return ["foo", "foobar"]
+ endfunc
+
+ call test_override("char_avail", 1)
+ new
+ set omnifunc=TestOmni complete^=o
+ set completeopt=preinsert autocomplete
+
+ call feedkeys("ifoo \<C-R>\<C-P>=\"xyz\"\<CR>\<Esc>", 'tx')
+ call assert_equal("foo xyz", getline('.'))
+ bw!
+ set omnifunc& complete& completeopt& autocomplete&
+ call test_override("char_avail", 0)
+ delfunc TestOmni
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab nofoldenable
diff --git a/src/version.c b/src/version.c
index 336ac8894..ea286f11b 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 */
+/**/
+ 40,
/**/
39,
/**/