GNU bug report logs - #15436
24.3.50; reads ~/.mailcap only once

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Gregor Zattler <telegraph <at> gmx.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50; reads ~/.mailcap only once
Date: Sun, 22 Sep 2013 21:45:40 +0200

Dear Emacs Developers, 

Emacs reads ~/.mailcap only once, does not recognize later
changes in this configuration file even if made with Emacs in the
same session.  This happens with Emacs23 and Emacs-snapshot.  I
consider this behaviour a bug.  Quitting Emacs and starting anew
forces reload of ~/.mailcap.

How to reproduce:

When opening a file link to say an image or PDF document within
org-mode via C-u C-u C-c C-o Emacs reads (in default
configuration) ~/.mailcap in search for a application to open the
file with.  If one then changes this ~/.mailcap, saves it and opens
the same file again it is opened via the mailcap entry before the
change.

Thanks for your attention, Gregor

Message #8 received at 15436 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Gregor Zattler <telegraph <at> gmx.net>
Cc: 15436 <at> debbugs.gnu.org
Subject: Re: bug#15436: 24.3.50; reads ~/.mailcap only once
Date: Sun, 22 Sep 2013 23:07:26 +0300

> From: Gregor Zattler <telegraph <at> gmx.net>
> Date: Sun, 22 Sep 2013 21:45:40 +0200
> 
> Emacs reads ~/.mailcap only once, does not recognize later
> changes in this configuration file even if made with Emacs in the
> same session.  This happens with Emacs23 and Emacs-snapshot.  I
> consider this behaviour a bug.  Quitting Emacs and starting anew
> forces reload of ~/.mailcap.
> 
> How to reproduce:
> 
> When opening a file link to say an image or PDF document within
> org-mode via C-u C-u C-c C-o Emacs reads (in default
> configuration) ~/.mailcap in search for a application to open the
> file with.  If one then changes this ~/.mailcap, saves it and opens
> the same file again it is opened via the mailcap entry before the
> change.

Does it help to invoke "M-x mailcap-parse-mailcaps RET"?

Message #11 received at 15436 <at> debbugs.gnu.org (full text, mbox):

From: Gregor Zattler <telegraph <at> gmx.net>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 15436 <at> debbugs.gnu.org
Subject: Re: bug#15436: 24.3.50; reads ~/.mailcap only once
Date: Sun, 22 Sep 2013 22:41:34 +0200

Hi Eli,
* Eli Zaretskii <eliz <at> gnu.org> [2013-09-22; 22:07]:
>> From: Gregor Zattler <telegraph <at> gmx.net>
>> Date: Sun, 22 Sep 2013 21:45:40 +0200
>> 
>> Emacs reads ~/.mailcap only once, does not recognize later
>> changes in this configuration file even if made with Emacs in the
>> same session.  This happens with Emacs23 and Emacs-snapshot.  I
>> consider this behaviour a bug.  Quitting Emacs and starting anew
>> forces reload of ~/.mailcap.
>> 
>> How to reproduce:
>> 
>> When opening a file link to say an image or PDF document within
>> org-mode via C-u C-u C-c C-o Emacs reads (in default
>> configuration) ~/.mailcap in search for a application to open the
>> file with.  If one then changes this ~/.mailcap, saves it and opens
>> the same file again it is opened via the mailcap entry before the
>> change.
>
> Does it help to invoke "M-x mailcap-parse-mailcaps RET"?

Yes.  Thanks for this pointer.  

I still consider this to be a bug.  Emacs should behave as
configured in .mailcap not as in an old version of it.  If the
Emacs developers consider this behaviour to be ok then it should
be documented somewhere.


Thank you for your fast reply, gregor

Message #14 received at 15436 <at> debbugs.gnu.org (full text, mbox):

From: Gregor Zattler <telegraph <at> gmx.net>
To: 15436 <at> debbugs.gnu.org
Cc: Eli Zaretskii <eliz <at> gnu.org>
Subject: Re: bug#15436: 24.3.50; reads ~/.mailcap only once
Date: Sat, 25 Oct 2014 10:38:54 +0200

Hi Eli, emacs developers,
* Gregor Zattler <telegraph <at> gmx.net> [22. Sep. 2013]:
>>> When opening a file link to say an image or PDF document within
>>> org-mode via C-u C-u C-c C-o Emacs reads (in default
>>> configuration) ~/.mailcap in search for a application to open the
>>> file with.  If one then changes this ~/.mailcap, saves it and opens
>>> the same file again it is opened via the mailcap entry before the
>>> change.
>>
>> Does it help to invoke "M-x mailcap-parse-mailcaps RET"?
> 
> Yes.  Thanks for this pointer.  
> 
> I still consider this to be a bug.  Emacs should behave as
> configured in .mailcap not as in an old version of it.  If the
> Emacs developers consider this behaviour to be ok then it should
> be documented somewhere.

This could be a use case for the inotify infrastructure.  (Way
beyond my skills).

Ciao, Gregor
-- 
 -... --- .-. . -.. ..--.. ...-.-

Message #17 received at 15436 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Gregor Zattler <telegraph <at> gmx.net>
Cc: 15436 <at> debbugs.gnu.org
Subject: Re: bug#15436: 24.3.50; reads ~/.mailcap only once
Date: Wed, 05 Aug 2020 09:05:56 +0200

Gregor Zattler <telegraph <at> gmx.net> writes:

> Emacs reads ~/.mailcap only once, does not recognize later
> changes in this configuration file even if made with Emacs in the
> same session.  This happens with Emacs23 and Emacs-snapshot.  I
> consider this behaviour a bug.  Quitting Emacs and starting anew
> forces reload of ~/.mailcap.

This was changed finally in Emacs 27, I believe -- it'll now re-read the
data any time it's queried for data.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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