Stefan Monnier writes:

>>> The other day, Emacs (Gnus) decided for some reason to display a photo
>>> by passing it to `ee`.
>>>
>>> Does anyone know what that is?  I couldn't find any trace of
>>> it anywhere.
>>>
>> [...]
>>
>> Seems to be "easy editor", a text editor included in FreeBSD.
>
> That would be a pretty poor choice to display `image/*` mime types,
> wouldn't it?
>
>
>         Stefan

It certainly would.  Adam's suggestion makes more sense. :-)