#!/bin/bash
#
# copy-on-write wrapper for hard linked files
# Copyright 2000 David A. Schleef <ds@schleef.org>
#
# Please send me any improvments you make to this script.  I just
# wrote it as a quick and dirty hack.


linkedfiles=

for each in $*
do
	case $each in
	-*)
		# ignore
		;;
	*)
		if [ -f "$each" ];then
			nlinks=$(stat $each|grep Links|sed 's/.*Links: \(.*\)\{1\}/\1/')
			if [ $nlinks -gt 1 ];then
				#echo unlinking $each
				linkedfiles="$linkedfiles $each"
				mv $each $each.orig
				cp $each.orig $each
			fi
		fi
		;;
	esac
done

/usr/bin/vim $*

for each in $linkedfiles
do
	if cmp $each $each.orig &>/dev/null
	then
		#echo relinking $each
		rm $each
		mv $each.orig $each
	fi
done