patch 8.2.4504: when there is a partially matching map full map may not work
Problem: When there is a partially matching map and modifyOtherKeys is
active a full map may not work.
Solution: Only simplify modifiers when there is no matching mapping.
(closes #8792)
diff --git a/src/testdir/test_termcodes.vim b/src/testdir/test_termcodes.vim
index 614c097..a68506c 100644
--- a/src/testdir/test_termcodes.vim
+++ b/src/testdir/test_termcodes.vim
@@ -2098,6 +2098,23 @@
set timeoutlen&
endfunc
+func Test_modifyOtherKeys_ambiguous_mapping()
+ new
+ set timeoutlen=10
+ map <C-J> a
+ map <C-J>x <Nop>
+ call setline(1, 'x')
+
+ " CTRL-J b should have trigger the <C-J> mapping and then insert "b"
+ call feedkeys(GetEscCodeCSI27('J', 5) .. "b\<Esc>", 'Lx!')
+ call assert_equal('xb', getline(1))
+
+ unmap <C-J>
+ unmap <C-J>x
+ set timeoutlen&
+ bwipe!
+endfunc
+
" Whether Shift-Tab sends "ESC [ Z" or "ESC [ 27 ; 2 ; 9 ~" is unpredictable,
" both should work.
func Test_modifyOtherKeys_shift_tab()