From 1e9410df0c52b8bd4cd52955c8aef48d080e79ba Mon Sep 17 00:00:00 2001
From: Patrick Ulbrich <zulu99@gmx.net>
Date: Sat, 22 Dec 2012 16:05:41 +0100
Subject: [PATCH] make sure an existing mailnag process has been terminated
 before starting a new one (fixes occurence of multiple mailnag instances)

---
 mailnag | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/mailnag b/mailnag
index b4aed2c..d2679db 100755
--- a/mailnag
+++ b/mailnag
@@ -6,7 +6,12 @@ config_dir="${XDG_CONFIG_HOME:-$HOME/.config}/mailnag"
 mkdir --parents "$config_dir"
 
 if [ -f "$config_dir/mailnag.pid" ]; then
-	kill $(cat "$config_dir/mailnag.pid") 2> /dev/null
+	pid=$(cat "$config_dir/mailnag.pid")
+	kill $pid 2> /dev/null
+	# wait until mailnag teminates and removes it's pid file
+	while ps -p $pid > /dev/null; do
+		sleep 1
+	done
 fi
 
 rm --force "$config_dir/mailnag.log"