bug#33275: 27.0.50; Image cache pruning

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

>> So either a DONT-CACHE parameter to `image-size' or just a docstring
>> thing.  :-)
>
> How about both?

DONT-CACHE seems unnecessary since `image-flush' exists, so I've just
added a reference to that function in the `image-size' function.  It
should point people who need this towards doing something like

(dolist (file (directory-files-recursively "~/pics" "jpg$"))
  (let ((spec (create-image file)))
    (image-size spec t)
    (image-flush spec)))


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