#!/bin/sh

case $# in
1) (pcregrep -n "^[$]?$1[^\w]" * ; pcregrep -n "   ? ?[$]?$1[^\w]" * ; pcregrep -n "[^\w'][$]?$1[^\w]" * ) | sort -un
;;
2) (pcregrep -n "^[$]?$1[^\w]" $2 ; pcregrep -n "   ? ?[$]?$1[^\w]" $2 ; pcregrep -n "[^\w'][$]?$1[^\w]" $2 ) | sort -un
;;
*) echo "usage: var [identifier] [file]?"
   exit 1
;;
esac
exit 0