Insert rule after previous rules

src/freedombone-addlist

@@ -98,12 +98,24 @@ if [ ! -d "$LISTDIR" ]; then
 fi
 
 chown -R $MYUSERNAME:$MYUSERNAME $LISTDIR
+
 if ! grep -q "Subject:.*()\[$SUBJECTTAG\]" $PM; then
-    echo "" >> $PM
-    echo ":0" >> $PM
-    echo "  * ^Subject:.*()\[$SUBJECTTAG\]" >> $PM
-    echo "$LISTDIR/new" >> $PM
-    chown $MYUSERNAME:$MYUSERNAME $PM
+    if ! grep -q "End of rule" $PM; then
+        echo "" >> $PM
+        echo "/# Email rule for $MAILINGLIST subject \[$SUBJECTTAG\]" >> $PM
+        echo ":0" >> $PM
+        echo "  * ^Subject:.*()\[$SUBJECTTAG\]" >> $PM
+        echo "$LISTDIR/new" >> $PM
+        echo "/# End of rule" >> $PM
+        chown $MYUSERNAME:$MYUSERNAME $PM
+    else
+        sed -i "/End of rule/a
+/# Email rule for $MAILINGLIST subject \[$SUBJECTTAG\]
+:0
+  * ^Subject:.*()\[$SUBJECTTAG\]
+$LISTDIR/new
+/# End of rule" $PM
+    fi
 fi
 
 if [ ! -f "$MUTTRC" ]; then