patch 8.2.2289: Vim9: 'cpo' can become empty
Problem: Vim9: 'cpo' can become empty.
Solution: Use empty_option instead of an empty string. Update quickfix
buffer after restoring 'cpo'. (closes #7608)
diff --git a/src/gui_motif.c b/src/gui_motif.c
index ed2cfec..1863fa6 100644
--- a/src/gui_motif.c
+++ b/src/gui_motif.c
@@ -3525,7 +3525,7 @@
char_u *save_cpo = p_cpo;
// No need to be Vi compatible here.
- p_cpo = (char_u *)"";
+ p_cpo = empty_options;
u_undo(1);
p_cpo = save_cpo;
gui_update_screen();