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-rw-r--r--Functions/Calendar/calendar13
1 files changed, 11 insertions, 2 deletions
diff --git a/Functions/Calendar/calendar b/Functions/Calendar/calendar
index f6316eb18..b87a14628 100644
--- a/Functions/Calendar/calendar
+++ b/Functions/Calendar/calendar
@@ -253,13 +253,21 @@ if (( verbose )); then
fi
fi
+# 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.
{
if [[ -n $donefile ]]; then
# Attempt to lock both $donefile and $calendar.
# Don't lock $newfile; we've tried our best to make
# the name unique.
- calendar_lockfiles $calendar $donefile || return 1
+ if zmodload -F zsh/system b:zsystem && zsystem supports flock; then
+ zsystem flock $calendar
+ zsystem flock $donefile
+ else
+ calendar_lockfiles $calendar $donefile || exit 1
+ fi
fi
calendar_read $calendar
@@ -414,4 +422,5 @@ Old calendar left in $calendar.old." >&2
(( ${#lockfiles} )) && rm -f $lockfiles
}
-return $rstat
+exit $rstat
+)