ref: 2259c436be76e22801766f8cd1a056f5b4430139
dir: /rc/bin/diffy/
#!/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) for(f) diff $diffopts `{yesterday $f} $f