#!/bin/rc
# $patch/diff [-w] patch-name
rfork e
fn usage {
	echo 'usage: $patch/diff patch-name' >[1=2]
	exit usage
}

flags=-ncr
if(! ~ $#* 0 && ~ $1 -*){
	flags=()
	while (! ~ $#* 0 && ~ $1 -*) {
		flags=($flags $1)
		shift
	}
}
if(! ~ $#* 1)
	usage
. /rc/bin/apatch/defs
mountfs

d=$PD/$1
cd $d || fail no dir $d

fn mkdiff {
	if(test -e $2.orig){
		echo $1:
		diff $flags $2.orig $2
	}
	if not
		echo new: $1
}

{
	cat removed | sed 's/^/removed: /'
	mkdiff `{cat files}
} | tee $d/diffs