From ff35ac10e995043ddbc05154f185784b9918d48b Mon Sep 17 00:00:00 2001
From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Tue, 14 Jan 2014 09:55:40 +0100
Subject: [PATCH] Fix ManProc for OS X

---
 gtk/xboard.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/gtk/xboard.c b/gtk/xboard.c
index d59adf1..2a46f09 100644
--- a/gtk/xboard.c
+++ b/gtk/xboard.c
@@ -1786,7 +1786,9 @@ void
 ManProc ()
 {   // called from menu
 #ifdef __APPLE__
-    system("%s ./man.command", appData.sysOpen);
+    char buf[MSG_SIZ];
+    snprintf(buf, MSG_SIZ, "%s ./man.command", appData.sysOpen);
+    system(buf);
 #else
     system("xterm -e man xboard &");
 #endif
-- 
1.7.0.4