Re: pdf viewer

[Ben Bacarisse]

kjonca@poczta.onet.pl (Kamil Jońca) writes:

> "Garreau, Alexandre" <galex-713@galex-713.eu> writes:
>
>> On 2018-10-06 at 12:39, Teemu Likonen wrote:
>>> Kamil Jońca [2018-10-06 11:02:54+02] wrote:
>>>
>>>> For some time emacs view pdf files with its internal viewer. But I
>>>> want to keep old behavior - open them with xpdf/evince How can I do
>>>> it?
>>>
>>> You can use mailcap-user-mime-data variable to override the (generated)
>>> defaults in mailcap-mime-data:
>>>
>>>     (setq mailcap-user-mime-data
>>>           '(((type . "application/pdf")
>>>              (viewer . "evince %s"))))
>>
>> My emacs uses its internal viewer doc view, and yet I see this in my
>> predefined (I didn’t touch it myself) mailcap-user-mime-data:
>>
>> #+BEGIN_SRC elisp
>>   ("pdf"
>>    (viewer . "okular '%s'")
>>    (type . "application/pdf")
>>    (test "test" "\"$DISPLAY\"" "!=" "\"\"")
>>    ("nametemplate" . "%s.pdf"))
>> #+END_SRC
>>
> Are you sure you speak about mailcap-user-mime-data, not
> mailcap-mime-data?

Part of the trouble is that mailcap.el defines a sort function that
favours symbols over strings.  As a result, no matter what viewer
command you have, 'doc-view-mode will win out.

I have used a temporary fix which is to have

(require 'mailcap)
(setq mailcap-mime-data nil)
(mailcap-parse-mailcaps nil t)

in .emacs.  This is a crude fix, but it works for the time being.

I started a thread about this a few days ago in comp.emacs and there
have been some other ideas along the line of code to pickout the
'doc-view-mode a-list entries.

-- 
Ben.