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From: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: rms@gnu.org, emacs-devel@gnu.org
Subject: Re: decode-coding-string gone awry?
Date: Thu, 17 Feb 2005 08:20:36 -0500	[thread overview]
Message-ID: <878y5n9vh9.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <200502171208.VAA09592@etlken.m17n.org> (Kenichi Handa's message of "Thu, 17 Feb 2005 21:08:02 +0900 (JST)")

> Even if size_byte == size, it may contain eight-bit-graphic
> characters, and decoding such a string is a valid operation.
> And even if size_byte > size, it may contain only ASCII,
> eight-bit-graphic, and eight-bit-control charactes.  It's
> also a valid operation to decode it.

I think it should not be considered valid to decode a multibyte string,
whether the string happens to only contains ASCII (or ASCII+eight-bit-*)
or not.

> It's not a trivial work to change the current code (in coding.c) to signal
> an error safely while doing a code conversion.

If by "safely" you mean "which will not break currently working code",
I agree.  If by "safely" you mean "which will not break properly written
code", I disagree.


        Stefan

  reply	other threads:[~2005-02-17 13:20 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-02-13  3:50 decode-coding-string gone awry? David Kastrup
2005-02-14  1:50 ` Kenichi Handa
2005-02-14  2:28   ` David Kastrup
2005-02-15  6:15   ` Richard Stallman
2005-02-15  9:31     ` David Kastrup
2005-02-15 16:17     ` Stefan Monnier
2005-02-17 10:35       ` Richard Stallman
2005-02-17 12:08       ` Kenichi Handa
2005-02-17 13:20         ` Stefan Monnier [this message]
2005-02-18  8:30           ` Kenichi Handa
2005-02-18 12:56             ` Stefan Monnier
2005-02-19  9:44             ` Richard Stallman
2005-02-18 14:12           ` Richard Stallman
2005-02-19 20:55             ` Richard Stallman
2005-02-21  1:19               ` Kenichi Handa
2005-02-22  8:41                 ` Richard Stallman
2005-02-18 14:12         ` Richard Stallman
2005-02-14 13:37 ` Stefan Monnier
2005-02-14 13:50   ` David Kastrup
2005-02-14 16:57     ` Stefan Monnier
2005-02-14 17:24       ` David Kastrup
2005-02-14 18:12         ` Stefan Monnier
2005-02-14 18:41           ` David Kastrup
2005-02-14 19:30             ` Stefan Monnier
2005-02-14 20:09               ` David Kastrup
2005-02-14 20:56                 ` Stefan Monnier
2005-02-14 21:07                   ` David Kastrup
2005-02-14 21:29                     ` Stefan Monnier
2005-02-14 21:57                       ` David Kastrup
2005-02-14 21:26                   ` David Kastrup
2005-02-15 17:28         ` Richard Stallman
2005-02-15 21:42           ` David Kastrup

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