patch 9.0.1571: RedrawingDisabled not used consistently
Problem: RedrawingDisabled not used consistently.
Solution: Avoid RedrawingDisabled going negative. Set RedrawingDisabled in
win_split_ins(). (closes #11961)
diff --git a/src/popupmenu.c b/src/popupmenu.c
index 7210420..651f510 100644
--- a/src/popupmenu.c
+++ b/src/popupmenu.c
@@ -865,7 +865,8 @@
++no_u_sync;
resized = prepare_tagpreview(FALSE, FALSE, use_popup);
--no_u_sync;
- --RedrawingDisabled;
+ if (RedrawingDisabled > 0)
+ --RedrawingDisabled;
g_do_tagpreview = 0;
if (curwin->w_p_pvw