patch 8.0.0440: not enough test coverage in Insert mode commit https://github.com/vim/vim/commit/eb992cb90fd79c77ad2743459ac898e6ac3de939 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Mar 9 18:20:16 2017 +0100 patch 8.0.0440: not enough test coverage in Insert mode Problem: Not enough test coverage in Insert mode. Solution: Add lots of tests. Add test_override(). (Christian Brabandt, closes #1521)

--- a/src/screen.c
+++ b/src/screen.c
@@ -10580,7 +10580,12 @@ fillchar_vsep(int *attr)
     int
 redrawing(void)
 {
-    return (!RedrawingDisabled
+#ifdef FEAT_EVAL
+    if (disable_redraw_for_testing)
+	return 0;
+    else
+#endif
+	return (!RedrawingDisabled
 		       && !(p_lz && char_avail() && !KeyTyped && !do_redraw));
 }