From: Eli Zaretskii <eliz@gnu.org>
Date: Sat, 18 Jun 2022 10:12:21 +0000 (+0300)
Subject: Don't count ticks too eagerly in syntax.c
X-Git-Tag: emacs-29.0.90~1447^2~1506^2~4
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=a82af5ae786073aa3e7af82f3d181e8b18fdd594;p=emacs.git

Don't count ticks too eagerly in syntax.c

* src/syntax.c (scan_sexps_forward): Don't increment redisplay
tick count of the loop didn't advance at all.
---

diff --git a/src/syntax.c b/src/syntax.c
index de9193e2deb..c13a8179ee4 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -3481,7 +3481,8 @@ do { prev_from = from;				\
      means we consider 10 buffer positions examined by this function
      roughly equivalent to the display engine iterating over a single
      buffer position.  */
-  update_redisplay_ticks ((from - started_from) / 10 + 1, NULL);
+  if (from > started_from)
+    update_redisplay_ticks ((from - started_from) / 10 + 1, NULL);
 }
 
 /* Convert a (lisp) parse state to the internal form used in