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From: Jesper Harder <harder@ifa.au.dk>
Newsgroups: gmane.emacs.bugs
Subject: Re: detect-coding-string doesn't return all possibilities
Date: Sat, 15 Mar 2003 00:04:08 +0100
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Kenichi Handa <handa@m17n.org> writes:

> Jesper Harder <harder@ifa.au.dk> writes:
>
>> Do you know of any other way to decide if using a given coding system
>> for decoding a string would give a valid result?

> How about this?
>
> (defun decode-coding-string-safely (string coding-system)
>   "Decode STRING by CODING-SYSYTEM and return the result.
> If STRING contains invalid byte sequence for CODING-SYSTEM, return nil."

Execellent.  Thank you!