From 07b6256d8ea03805dd8a24c184bf455ee31d6115 Mon Sep 17 00:00:00 2001
From: Peter Stephenson <pws@users.sourceforge.net>
Date: Fri, 26 Feb 2010 12:09:20 +0000
Subject: 27756: add OS file locking to calendar add errflag test to loop over
 fcntl()

---
 Functions/Calendar/calendar_edit | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'Functions/Calendar/calendar_edit')

diff --git a/Functions/Calendar/calendar_edit b/Functions/Calendar/calendar_edit
index e31decb76..e3ac5c39b 100644
--- a/Functions/Calendar/calendar_edit
+++ b/Functions/Calendar/calendar_edit
@@ -10,12 +10,21 @@ done
 
 zstyle -s ':datetime:calendar:' calendar-file calendar || calendar=~/calendar
 
+# start of subshell for OS file locking
+(
+# start of block for following always to clear up lockfiles.
+# Not needed but harmless if OS file locking is used.
 {
-  calendar_lockfiles $calendar || return 1
+  if zmodload -F zsh/system b:zsystem && zsystem supports flock; then
+    zsystem flock $calendar
+  else
+    calendar_lockfiles $calendar || exit 1
+  fi
 
   eval $editor \$calendar
 } always {
   (( ${#lockfiles} )) && rm -f $lockfiles
 }
+)
 
 (( cal_running )) && calendar -s
-- 
cgit 1.4.1