bug#1174: 23.0.60; Some UTF-8 mails displaying wrongly in Emacs 23

[Frank Schmitt <ich@frank-schmitt.net>]

Reiner Steib <reinersteib+gmane@imap.cc> writes:

> On Fri, Oct 17 2008, Stefan Monnier wrote:
>
>>>   ;; BEWARE: we used to use string-as-multibyte here which is braindead
>>>   ;; because it will turn accidental emacs-mule-valid byte sequences
>>>   ;; into multibyte chars.  --Stef
>>>   ;; Reverted, braindead got 7.5 out of 10 on imdb, so it can't be
>>>   ;; that bad. --Simon
>>
>> Who's this Simon who reverted my change without even explaining why?
>
> The one who's listed as the author of nnimap.el (cc-ed).
>
>>> which is called at several places. And this breaks it. If I change
>>> this function so that string is not changed, my mails are displayed
>>> correctly.
>
> Does it work correctly when using Stefan's version?
> ( s/string-as-multibyte/string-to-multibyte/ ...)
>
> (defun nnimap-demule (string)
>   ;; BEWARE: we used to use string-as-multibyte here which is braindead
>   ;; because it will turn accidental emacs-mule-valid byte sequences
>   ;; into multibyte chars.  --Stef
>   (funcall (if (and (fboundp 'string-to-multibyte)
> 		    (subrp (symbol-function 'string-to-multibyte)))
> 	       'string-to-multibyte
> 	     'identity)
> 	   (or string "")))

Yes, it does.

Frank

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