Only add rules if they don't already exist

src/freedombone-addemail

@@ -73,11 +73,13 @@ if [ ! -d "$LISTDIR" ]; then
     mkdir -m 700 $LISTDIR/cur
 fi
 chown -R $MYUSERNAME:$MYUSERNAME $LISTDIR
-echo "" >> $PM
-echo ":0" >> $PM
-echo "  * ^From: $EMAILADDRESS" >> $PM
-echo "$LISTDIR/new" >> $PM
-chown $MYUSERNAME:$MYUSERNAME $PM
+if ! grep -q "From: $EMAILADDRESS" $PM; then
+    echo "" >> $PM
+    echo ":0" >> $PM
+    echo "  * ^From: $EMAILADDRESS" >> $PM
+    echo "$LISTDIR/new" >> $PM
+    chown $MYUSERNAME:$MYUSERNAME $PM
+fi
 if [ ! -f "$MUTTRC" ]; then
   cp /etc/Muttrc $MUTTRC
   chown $MYUSERNAME:$MYUSERNAME $MUTTRC

src/freedombone-addlist

@@ -79,7 +79,7 @@ if [ ! -d "$LISTDIR" ]; then
 fi
 
 chown -R $MYUSERNAME:$MYUSERNAME $LISTDIR
-if ! grep -q "$LISTDIR/new" $PM; then
+if ! grep -q "Subject:.*()\[$SUBJECTTAG\]" $PM; then
     echo "" >> $PM
     echo ":0" >> $PM
     echo "  * ^Subject:.*()\[$SUBJECTTAG\]" >> $PM