patch 8.0.0683: visual bell flashes too quickly commit https://github.com/vim/vim/commit/2e147caa14f622dfd1c1def8e07c113b9b85d4b2 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jun 27 17:09:37 2017 +0200 patch 8.0.0683: visual bell flashes too quickly Problem: When using a visual bell there is no delay, causing the flash to be very short, possibly unnoticeable. Also, the flash and the beep can lockup the UI when repeated often. Solution: Do the delay in Vim or flush the output before the delay. Limit the bell to once per half a second. (Ozaki Kiichi, closes #1789)

--- a/src/proto/term.pro
+++ b/src/proto/term.pro
@@ -16,6 +16,7 @@ void out_flush_check(void);
 void out_trash(void);
 void out_char(unsigned c);
 void out_str_nf(char_u *s);
+void out_str_cf(char_u *s);
 void out_str(char_u *s);
 void term_windgoto(int row, int col);
 void term_cursor_right(int i);