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

while (! ~ $#* 0 && ~ $1 -*) {
	switch ($1) {
	case *
		usage
	}
	shift
}
if(! ~ $#* 1)
	usage
. /rc/bin/patch/defs
mountfs

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

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

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