diff --git a/src/fuzzy.c b/src/fuzzy.c
index 15e3c4cdbe..9a94acea20 100644
--- a/src/fuzzy.c
+++ b/src/fuzzy.c
@@ -816,7 +816,8 @@ search_for_fuzzy_match(
{
// Check if looped around and back to start position
- if (looped_around && EQUAL_POS(current_pos, circly_end))
+ if (looped_around && (whole_line ? current_pos.lnum == circly_end.lnum
+ : EQUAL_POS(current_pos, circly_end)))
break;
// Ensure current_pos is valid
diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index 5d93a4248d..7e92bac69e 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -3835,6 +3835,31 @@ func Test_complete_fuzzy_collect()
set completeopt& cpt& ignorecase& infercase&
endfunc
+" Issue #19434
+" Fuzzy whole-line completion should not loop infinitely when the cursor is in
+" the middle of the line (non-zero column).
+func Test_complete_fuzzy_wholeline_no_hang()
+ new
+ set completeopt=preview,fuzzy,noinsert,menuone
+ call setline(1, [
+ \ '',
+ \ '',
+ \ ' ',
+ \ ' ',
+ \ ' ',
+ \ ' ',
+ \ '
',
+ \ ' ',
+ \ '',
+ \ ])
+ call cursor(6, 1)
+ call feedkeys("faC\\\0", 'tx!')
+ call assert_equal('