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From: Andy Wingo <wingo@pobox.com>
To: joakim@verona.se
Cc: emacs-devel@gnu.org
Subject: Re: whats the Emacsy way to xsltish tasks?
Date: Fri, 20 May 2011 11:28:05 +0200	[thread overview]
Message-ID: <m38vu1yb4q.fsf@unquote.localdomain> (raw)
In-Reply-To: <m3sjsa5m6y.fsf@verona.se> (joakim@verona.se's message of "Fri, 20 May 2011 01:01:57 +0200")

On Fri 20 May 2011 01:01, joakim@verona.se 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
-- 
http://wingolog.org/



      reply	other threads:[~2011-05-20  9:28 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-19 23:01 whats the Emacsy way to xsltish tasks? joakim
2011-05-20  9:28 ` Andy Wingo [this message]

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