bug#10050: 24.0.90; image files display image data only after drag and drop

[Glenn Morris <rgm@gnu.org>]

Jan Djärv wrote:

> The big problem is that dragging a file to Emacs on NS inserts the
> contents of that file to the current buffer instead of opening it as
> people normally expect, and indeed is what all other Emacs versions
> does. It is like that in Emacs 23 also, so this is not a regression.
> But as we are in a feature freeze this will have to wait, even if the
> behaviour is stupid. If Emacs would open dragged files in a new
> buffer, images would be shown as images.

Is it just a question of doing what it says in the manual, or is more
needed?

    The default behavior when a user drags files from another application
    into an Emacs frame is to insert the contents of all the dragged files
    into the current buffer.  To remap the `ns-drag-file' event to open the
    dragged files in the current frame use the following line:
 
         (define-key global-map [ns-drag-file] 'ns-find-file)

Maybe that change is sensible and safe enough for 24.1.
(I can't even test it so I wouldn't know.)