From: Aredridel <aredridel@...>
Date: 2004-10-27T15:17:03+09:00
Subject: Re: [ANN] XHTMLDiff 1.0.0

> > What I was doing was refactoring some RSS code that didn't have enough
> tests, so I wanted to compare pretty much every element of the
> resulting RSS. I ended up just eyeballing it in an aggregator, which
> seems to have worked out okay but still wasn't ideal.
> 
> I'd want a pretty granular comparison, and at the API level would be
> ideal. I don't mind having to do a little work to format the changes
> into readable output. Also, maybe having API-level information would
> make it easier for me to filter out certain differences.

Hm. Sounds like <ins> and <del> equivalents might be perfect, though
really, you want exact, full-tree diffs. That's a simpler task,
really. Honestly, it sounds like raw Diff::LCS might be the tool you
want -- parse both with REXML, and then hit the trees with Diff::LCS
-- the gotcha being the way REXML deals with containers. Steal the
proxy class from XHTMLDiff and that should be all you need.

Ari