#!/bin/rc
# diffy [diff-opts] [file...] - diff file against yesterday's version(s)
rfork e
diffopts=()
while(! ~ $#* 0 && ~ $1 -* && ! ~ $1 --){
	diffopts=($diffopts $1)
	shift
}
if(~ $1 --)
	shift
#if(! ~ $#* 1)
#	diffopts=($diffopts -m)
if (~ $#* 0)
	* = (.)
for(f) {
	dumpdir=`{yesterday $f}
	if (test -e $dumpdir)
		ape/diff -u $diffopts $dumpdir $f
	if not
		echo $dumpdir missing >[1=2]
}