ref: a0ba4c1f03a3f99fb17a9edf9b4448db49bb6c46
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