Re: image.el doesn't associate image-mode with .JPG files

[Richard Stallman]

    I guess it is a matter of taste, but I would prefer if Emacs uses the
    technique above instead of looking at the file name.  An example of
    why this is useful: From my digital camera, each time I record a movie
    with it I get both an avi file and a thm file (I think that was the
    extension but it does not matter really), and it turns out that this
    extra thm file is a small thumbnail of the movie, in jpeg format.

That seems like a valid reason.  Would someone please install that change?
It would be useful to recognize PNG and GIF as well this way.