Re: whats the Emacsy way to xsltish tasks?

[Andy Wingo]

On Fri 20 May 2011 01:01, address@hidden writes:

> I have an elisp prog that builds an SVG image by using macros to create
> xslt that then transforms an SVG to create another SVG. The solution
> works but feels a bit humiliating. Why fork out to xsltproc, when xml is
> lisp with brackets?
>
> Now I have a couple of similar projects, and I'd like to try some
> different solution. Regexp matching is worse on these cases than forking
> out to xsltproc, so the alternative is to parse the xml with the new
> libxml wrapper, and transform it in Elisp. But since these are randomly
> deep structures Elisp might die from stack asphyxiation during recursion.
>
> So what to do then? Implement tail elimination? wrap libxslt? Some other
> embarassingly obvious solution I've missed?

See Oleg Kiselyov's "pre-post-order" transformation combinator.  He
wrote a few papers on it.

Andy
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