patch 9.0.1571: RedrawingDisabled not used consistently Commit: https://github.com/vim/vim/commit/79cdf026f1b8a16298ee73be497c4bd5f3458cde Author: Bram Moolenaar <Bram@vim.org> Date: Sat May 20 14:07:00 2023 +0100 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)

--- a/src/debugger.c
+++ b/src/debugger.c
@@ -287,7 +287,8 @@ do_debug(char_u *cmd)
     }
     vim_free(cmdline);
 
-    --RedrawingDisabled;
+    if (RedrawingDisabled > 0)
+	--RedrawingDisabled;
     --no_wait_return;
     redraw_all_later(UPD_NOT_VALID);
     need_wait_return = FALSE;