Org-mode: Can't display inline images when openwith-mode is turned on

Question

I use openwith to open images and a number of other types of files in external applications.

It works a treat, but gets in the way of displaying inline images in org-mode buffers: When I do C-c C-x C-v (org-toggle-inline-images) with openwith-mode turned on, the first image file linked in the current buffer is opened in an external viewer. The contents of the buffer itself don't change, i.e., no images are displayed inside the buffer.

Q: How can I stop openwith-mode from interfering with the display of inline images in org-mode?

Answer 1

Internally, org-toggle-inline-images calls org-display-inline-images to handle display of inline images. You can advise this function to turn off openwith-mode while it is doing its thing, and to turn it back on afterwards:

(defadvice org-display-inline-images
  (around handle-openwith
          (&optional include-linked refresh beg end) activate compile)
  (if openwith-mode
      (progn
        (openwith-mode -1)
        ad-do-it
        (openwith-mode 1))
    ad-do-it))

With this in place, no external viewers are opened when doing C-c C-x C-v in an org-mode buffer containing inline images.