From 8a9fd1eff21af4abe210fb4f5abbbb6921d15989 Mon Sep 17 00:00:00 2001
From: Giles Atkinson <“gatk555@gmail.com”>
Date: Tue, 7 Jan 2025 14:04:05 +0000
Subject: [PATCH] Using XFlush() instead of XSync() avoids a round trip to the
 X server on each call to DevUpdate().  That speeds plotting when using
 XQuartz on Macintosh and makes iplot useable there.

---
 src/frontend/plotting/x11.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/frontend/plotting/x11.c b/src/frontend/plotting/x11.c
index ca468cd24..5a18939d9 100644
--- a/src/frontend/plotting/x11.c
+++ b/src/frontend/plotting/x11.c
@@ -894,7 +894,7 @@ int
 X11_Update(void)
 {
     if (X11_Open)
-        XSync(display, 0);
+        XFlush(display);
     return 0;
 }