Re: Recent Emacs doesn't respect my mailcap

[Lars Ingebrigtsen <larsi@gnus.org>]

david.goldberg6@verizon.net (Dave Goldberg) writes:

> So I've been silently grumbling about this issue for a couple months,
> but I've just gotten used to calling ...-view-part-interactively (from
> the context menu) and running acrobat reader.  docview is really not
> an option at work (where most of my PDF dealings come from) since my
> company uses some of the more irritating PDF features like digital
> signatures.  Whether that's done via view-part or view-part-externally
> (assuming there's a strong desire to have view-part favor an internal
> function) doesn't bother me but it would be nice if
> view-part-externally did what I told it to do.

Indeed.  I don't understand this function at all.

So, it gets the method from `(mailcap-mime-info type)', which has this
default in most Emacsen:

(mailcap-mime-info "application/pdf")
=> doc-view-mode

And that's obviously not a string, so it calls
`gnus-mime-view-part-as-type' with a nil type, so you get prompted for a
type?

But if it does return a string, then `mm-display-part' is called with
the default handling method?  (So we get an external viewer.)

Err...  Am I totally misreading this, or is it kinda nonsensical?

(defun gnus-mime-view-part-externally (&optional handle)
  "View the MIME part under point with an external viewer."
  (interactive)
  (gnus-article-check-buffer)
  (let* ((handle (or handle (get-text-property (point) 'gnus-data)))
	 (mm-inlined-types nil)
	 (mail-parse-charset gnus-newsgroup-charset)
	 (mail-parse-ignored-charsets
          (with-current-buffer gnus-summary-buffer
            gnus-newsgroup-ignored-charsets))
         (type (mm-handle-media-type handle))
         (method (mailcap-mime-info type))
         (mm-enable-external t))
    (if (not (stringp method))
	(gnus-mime-view-part-as-type
	 nil (lambda (type) (stringp (mailcap-mime-info type))))
      (when handle
	(mm-display-part handle nil t)))))


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  bloggy blog http://lars.ingebrigtsen.no/