Re: rfc2231.el changes

[Katsumi Yamaoka <yamaoka@jpl.org>]

>>>>> In <v9u08z6jrm.fsf_-_@marauder.physik.uni-ulm.de> 
>>>>>	Reiner Steib <reinersteib+gmane@imap.cc> wrote:

> On Wed, Apr 12 2006, Katsumi Yamaoka wrote:

>> In addition, I've merged the changes to rfc2231.el that Kenichi
>> Handa made in the Emacs CVS.
> [...]
>> * trunk and v5-10 branch *

> I've adjusted the corresponding ChangeLog entries (date, ...) which
> were a bit messed up.

Thanks.

> The versions of `rfc2231.el' in v5-10 and Emacs are in sync now.
> However there are two differences to the trunk version.  vc-annotate
> shows that you worked on this code (on 16-Feb-06).  Could you sync the
> code if appropriate, please?  Hm, maybe it's because older Emacsen
> don't support shy groups correctly?

> --- rfc2231.el	12 Apr 2006 02:00:40 -0000	6.11.2.14
> +++ rfc2231.el	12 Apr 2006 02:00:49 -0000	7.15
[...]
> -  (string-match "\\`\\(\\([^']+\\)?'\\([^']+\\)?'\\)?\\(.+\\)" string)
> -  (let ((coding-system (mm-charset-to-coding-system (match-string 2 string)))
> -	;;(language (match-string 3 string))
> -	(value (match-string 4 string)))
> +  (string-match "\\`\\(?:\\([^']+\\)?'\\([^']+\\)?'\\)?\\(.+\\)" string)
> +  (let ((coding-system (mm-charset-to-coding-system (match-string 1 string)))
> +	;;(language (match-string 2 string))
> +	(value (match-string 3 string)))
[...]

Yes, Emacs 20 doesn't support shy groups.  Well, should we not
use shy groups in all Gnus modules (even in the trunk)?  Such
differences I made are not only in rfc2231.el but also in the
other modules, e.g., rfc2047.el.  I'm not very much positive to
remove them even if a lowering of performance by not using shy
groups is a little.  If anything, isn't it better to drop Emacs
20?