Problem with MIME in From:/Reply-To: fields

Problem with MIME in From:/Reply-To: fields

[Roman Belenov]

I've received a letter with the following headers (I omitted the body
since there were no problems with it). From: and Reply-To: fields are
in koi8-r and encoded, but Gnus showed them as is without
decoding. What's the problem ?

I'm using Gnus 5.8.7/GNU Emacs 20.7.1

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Date: Mon, 7 Aug 2000 14:52:47 +0400
From: =?koi8-r?B?4c7E0sXKIOLPwtLP1w?= <boan@sandy.ru>
X-Mailer: The Bat! (v1.45)
Reply-To: =?koi8-r?B?4c7E0sXKIOLPwtLP1w?= <boan@sandy.ru>
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To: Roman Belenov <roman@nstl.nnov.ru>
Subject: =?koi8-r?B?UmU6IMvOycfJ?=
In-reply-To: <uwvht74la.fsf@nstl.nnov.ru>
References: <uwvht74la.fsf@nstl.nnov.ru>
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Content-Type: text/plain; charset=koi8-r
Content-Transfer-Encoding: 8bit
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Xref: LIGHTHOUSE unsorted:1248
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-- 
 							With regards, Roman.

Re: Problem with MIME in From:/Reply-To: fields

[ShengHuo ZHU]

Roman Belenov <roman@nstl.nnov.ru> writes:

> I've received a letter with the following headers (I omitted the body
> since there were no problems with it). From: and Reply-To: fields are
> in koi8-r and encoded, but Gnus showed them as is without
> decoding. What's the problem ?
> 
> I'm using Gnus 5.8.7/GNU Emacs 20.7.1

[...]

> From: =?koi8-r?B?4c7E0sXKIOLPwtLP1w?= <boan@sandy.ru>

It is a bug of Emacs builtin base64, which does not pad the encoding
string.  

The base64.el coming with Gnus works. Try `M-x load-library base64'.

ShengHuo

Re: Problem with MIME in From:/Reply-To: fields

[Roman Belenov]

ShengHuo ZHU <zsh@cs.rochester.edu> writes:

> > From: =?koi8-r?B?4c7E0sXKIOLPwtLP1w?= <boan@sandy.ru>
> 
> It is a bug of Emacs builtin base64, which does not pad the encoding
> string.  
> 
> The base64.el coming with Gnus works. Try `M-x load-library base64'.

No, it didn't help. I tried as you said and also load-file'd
base64.elc from gnus-5.8.7 directory before starting Gnus but the
message was still not decoded.

PS And there is no base64.el in emacs\lisp tree. May be you meant
some other file ?

-- 
 							With regards, Roman.

Re: Problem with MIME in From:/Reply-To: fields

[ShengHuo ZHU]

Roman Belenov <roman@nstl.nnov.ru> writes:

> ShengHuo ZHU <zsh@cs.rochester.edu> writes:
> 
> > > From: =?koi8-r?B?4c7E0sXKIOLPwtLP1w?= <boan@sandy.ru>
> > 
> > It is a bug of Emacs builtin base64, which does not pad the encoding
> > string.  
> > 
> > The base64.el coming with Gnus works. Try `M-x load-library base64'.
> 
> No, it didn't help. I tried as you said and also load-file'd
> base64.elc from gnus-5.8.7 directory before starting Gnus but the
> message was still not decoded.

Oops. I was using the external decoder of base64.el.

  (setq base64-decoder-program "mmencode"
	base64-decoder-switches '("-u"))

So, there is also a bug in the base64 lisp decorder.

ShengHuo

Re: Problem with MIME in From:/Reply-To: fields

[Roman Belenov]

ShengHuo ZHU <zsh@cs.rochester.edu> writes:

> Oops. I was using the external decoder of base64.el.
> 
>   (setq base64-decoder-program "mmencode"
> 	base64-decoder-switches '("-u"))
> 
> So, there is also a bug in the base64 lisp decorder.

Ok, it worked (although version of mmencode I've found didn't do
padding and lost last character in my example - I had to add it
myself). But it takes much more time to enter mailbox with external
base64 decoder; I'll try to fix base64.el (although I don't sure I can
- my elisp is still not good).

-- 
 							With regards, Roman.

Re: Problem with MIME in From:/Reply-To: fields

[François Pinard]

[Roman Belenov]

> ShengHuo ZHU <zsh@cs.rochester.edu> writes:

> > Oops. I was using the external decoder of base64.el.
> > 
> >   (setq base64-decoder-program "mmencode"
> > 	base64-decoder-switches '("-u"))
> > 
> > So, there is also a bug in the base64 lisp decorder.

> Ok, it worked (although version of mmencode I've found didn't do padding
> and lost last character in my example - I had to add it myself).  But
> it takes much more time to enter mailbox with external base64 decoder;
> I'll try to fix base64.el (although I don't sure I can - my elisp is
> still not good).

That depends on the size of the attachment.  Emacs LISP does not have much
start overhead, but is much slower.  For one, I use:

   (setq base64-decoder-program "recode"
         base64-decoder-switches '("-f" "/64")
         base64-encoder-program "recode"
         base64-encoder-switches '("-f" "../64"))

but I'm biased :-).

-- 
François Pinard   http://www.iro.umontreal.ca/~pinard