From: Po Lu <luangruo@yahoo.com>
Date: Tue, 31 May 2022 12:56:43 +0000 (+0800)
Subject: Slightly optimize x_check_errors as well
X-Git-Tag: emacs-29.0.90~1910^2~315
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=90957dfb7a21528b19f587b1aa64752f5f2f194e;p=emacs.git

Slightly optimize x_check_errors as well

* src/xterm.c (x_check_errors): Don't sync if no requests were
made since the error trap was installed.
---

diff --git a/src/xterm.c b/src/xterm.c
index fb7d18a53fb..7235a1e9599 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -21414,8 +21414,10 @@ x_check_errors (Display *dpy, const char *format)
 
   /* There is no point in making this extra sync if all requests
      are known to have been fully processed.  */
-  if (LastKnownRequestProcessed (dpy)
-      != NextRequest (dpy) - 1)
+  if ((LastKnownRequestProcessed (dpy)
+       != NextRequest (dpy) - 1)
+      && (NextRequest (dpy)
+	  > x_error_message->first_request))
     XSync (dpy, False);
 
   if (x_error_message->string[0])