From: David Kastrup <dak@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: How to create a derived encoding?
Date: Tue, 12 Oct 2004 17:27:42 +0200 [thread overview]
Message-ID: <x5fz4kvtw1.fsf@lola.goethe.zz> (raw)
In-Reply-To: <jwvsm8kkmgm.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Tue, 12 Oct 2004 11:09:11 -0400")
Stefan Monnier <monnier@iro.umontreal.ca> writes:
>> So if there was a tolerably working way to derive a special encoding
>> (which will be used as a process output encoding) that reconverts
>> control sequences like the above before composing unicode characters
>> from the resulting utf-8 stream, this would appear to be by far the
>> fastest and convenient way to go about this problem.
>
> I'm not sure what you've tried and what are the constraints under which
> you're coding, but I'd have assumed that you can do:
>
> 1 - assume the raw TeX output with its funny quoted bytes is in the
> current temp buffer. The buffer is in unibyte mode.
No good. We are talking about process output that is accumulating in
a buffer. We can't just let everything trickle in in raw mode since
the buffer may be interactive and so we need to have more or less
accurate stuff at each point of time.
> 2 - do a search&replace of ^^NN to the corresponding byte.
Dead slow if we have to do this with search-and-replace in the filter
routine of the process.
> 3 - call decode-coding-region with the appropriate coding system.
> 4 - set the buffer to multibyte.
The buffer comes into being incrementally.
> If the step number 2 is too slow, you can most likely implement a
> CCL program that does it faster.
Well, that was what I was asking about. And how to let this CCL
program run prefixed to the normal process output decoding program.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
next prev parent reply other threads:[~2004-10-12 15:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-12 0:10 How to create a derived encoding? David Kastrup
2004-10-12 15:09 ` Stefan Monnier
2004-10-12 15:27 ` David Kastrup [this message]
2004-10-12 16:23 ` Stefan Monnier
2004-10-12 21:02 ` David Kastrup
2004-10-14 11:12 ` Oliver Scholz
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