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Re: hangs when reading DTD
From: |
Daniel Pfeiffer |
Subject: |
Re: hangs when reading DTD |
Date: |
Sat, 13 Nov 2004 00:20:10 +0100 |
Saluton,
Juri Linkov <address@hidden> skribis:
> Stefan <address@hidden> writes:
> > PS: A regexp is really not the best tool here.
I was reluctant to detect html with a regexp. But it allowed having a general
purpose mechanism, rather than hard coding XML into `set-auto-mode'. This was
needed for acroread, which has conf files in postscript format, that the file
name got wrong.
To be honest, apart from the few cases I put in, VRML may be the only other
candidate, if it ever gets its own mode. Most files with magic are at least
partially binary. There is one other, spar-mode by yours truly, for a simple
text only archive mode — not very widespread though.
> But perhaps you are right that a regexp is inefficient here.
True, if the file is xml/sgml, and there are many initial comments, it can
look pretty far into the buffer. But in that case we are have a good chance
to have a match anyways. If the buffer doesn't start with \s *<, this regexp
shouldn't hurt much.
I had also considered something like
("(<?xml...)?\s *(?:<!--...)*\s *(<?xml...)?\s *(?:<!--...)*\s *(?:<html)?"
(3 . html-mode)
> A function might do a better job, and `set-auto-mode' should be
> improved to support this.
What could a function do other than my regexp? Just looking for "<html" is
definitely not enough. The only alternative I see is my old mechanism, where
files with xml/sgml magic nevertheless have their file name scanned, to see if
it's a xml submode.
coralament / best Grötens / liebe Grüße / best regards / elkorajn salutojn
Daniel Pfeiffer
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