Re: Where to complain?

[David Kastrup <dak@gnu.org>]

Katsumi Yamaoka <yamaoka@jpl.org> writes:

>>>>>> In <85hd8c78rb.fsf@lola.goethe.zz> David Kastrup wrote:
>
>> Katsumi Yamaoka <yamaoka@jpl.org> writes:
>
>>> I don't know what does it, but such a behavior is performed by
>>> the HTML renderer specified in the `mm-text-html-renderer'
>>> variable; `w3m', `links' and `lynx' work fine, AFAIK.
>
>> w3m-standalone in my case, which would be the standard setting.  So it
>> would appear that the character encoding (which is part of the MIME
>> part declaration) is not passed to w3m or something?
>
>> w3m alone used on web pages outside of Emacs appears to work.  Maybe
>> something is wrong in mm-view.el?  It would appear that the following
>> is responsible for the stuff:
>
>> (defun mm-inline-render-with-stdin (handle post-func cmd &rest args)
>>   (let ((source (mm-get-part handle)))
>>     (mm-insert-inline
>>      handle
>>      (mm-with-unibyte-buffer
>>        (insert source)
>>        (apply 'mm-inline-wash-with-stdin post-func cmd args)
>>        (buffer-string)))))
>
>> Now what happens with the unibyte-buffer?  Perhaps the
>> mm-inline-wash-with-stdin process filter is not too happy about
>> inserting w3m output in utf-8 (the current locale) into a unibyte
>> buffer?  Or buffer-string, which likely happens to be unibyte decoded
>> into utf-8, then gets interpreted as latin-1, the encoding of the mime
>> part?  Or w3m tries interpreting the latin-1 encoded input as utf-8?
>
>> There seem many ways to get this wrong.  When the locale and language
>> environment and part encoding are all latin-1, stuff works.
>
> The locale and the language environment are irrelevant, I think.

Well, in an all-latin1 locale this works without losing characters.
But that involved both the locale of Emacs (I have no hard-configured
language-environment) and w3m.

> We may need to make Gnus provide the following functions:
>
> mm-inline-text-html-render-with-w3m-standalone
> gnus-article-wash-html-with-w3m-standalone

I don't see how w3m would differ from any other HTML engine receiving
HTML and outputting suitable for the current locale.

> However, they will be complicated like emacs-w3m if ones want to
> make w3m-standalone work well like emacs-w3m.  Why don't you use
> w3m? :)

Because it is not part of Emacs proper.  The default setup of Emacs
should not be broken.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum