Display attached pdf's with external view, not with doc-view-mode

Display attached pdf's with external view, not with doc-view-mode

[Teemu Likonen]

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I've been using Emacs 25.0.92 for a while and noticed that Gnus has
started to display attached pdf files with doc-view-mode (inside Emacs)
instead of launching an external viewer. In mailcap-mime-data variable I
have external viewer (Okular) first for the application/pdf MIME type
but Gnus doesn't want to respect that.

How do configure Gnus to use external viewer for attached pdf files?

-- 
/// Teemu Likonen   - .-..   <https://github.com/tlikonen> //
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Re: Display attached pdf's with external view, not with doc-view-mode

[Charles Philip Chan]

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Teemu Likonen <tlikonen@iki.fi> writes:

> I've been using Emacs 25.0.92 for a while and noticed that Gnus has
> started to display attached pdf files with doc-view-mode (inside Emacs)
> instead of launching an external viewer. In mailcap-mime-data variable I
> have external viewer (Okular) first for the application/pdf MIME type
> but Gnus doesn't want to respect that.

This is not a Gnus problem, but Emacs have changed to default to
docview-mode for pdf files, ignoring mailcap.

> How do configure Gnus to use external viewer for attached pdf files?

;;Remove doc-view so pdf will open with ocular
(setcdr
   (assoc "application" mailcap-mime-data)
   (remove '("pdf"
             (viewer . doc-view-mode)
             (type . "application/pdf")
             (test eq window-system 'x))
           (cdr (assoc "application" mailcap-mime-data))))

Charles

-- 
"If you want to travel around the world and be invited to speak at a lot
of different places, just write a Unix operating system."
(By Linus Torvalds)

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Re: Display attached pdf's with external view, not with doc-view-mode

[Teemu Likonen]

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Charles Philip Chan [2016-04-01 12:38:27-04] wrote:

> This is not a Gnus problem, but Emacs have changed to default to
> docview-mode for pdf files, ignoring mailcap.

Thanks. I hope there's a nice way to completely ignore *-view-mode. I
wrote this but it is quite brutal approach:

(require 'cl-lib)
(require 'mailcap)

(setq mailcap-mime-data
      (mapcar (lambda (major)
                (cons (car major)
                      (cl-remove-if
                       (lambda (minor)
                         (cl-member-if
                          (lambda (v)
                            (cl-member v '(doc-view-mode
                                           pdf-view-mode
                                           view-mode)))
                          (cdr minor)
                          :key 'cdr))
                       (cdr major))))
              mailcap-mime-data))

-- 
/// Teemu Likonen   - .-..   <https://github.com/tlikonen> //
// PGP: 4E10 55DC 84E9 DFF6 13D7 8557 719D 69D3 2453 9450 ///

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