> It would be much better for the user if the thumbnail file names are
> based on something meaningful, such as the user's file name (or at
> least part of it). It is ok to add other info such as an md5 checksum
> to make them unique, but please don't make them entirely meaningless.
I really don't understand why is that important; these files are not
for human consumption. But I don't really care one way or the other.
The real issue is not making them unique (although there's also a
small problem with that), but making them valid. As it is on CVS,
thumbs-thumbname does not produce valid MSDOS/Windows filenames.
I think the following approach can work, but still is could break on
non-Unix, non-Windows environments:
(defun thumbs-thumbname (img)
"Return a thumbnail name for the image IMG."
(convert-standard-filename
(let ((filename (expand-file-name img)))
(format "%s/%s-%x.jpg"
thumbs-thumbsdir
(subst-char-in-string
?\s ?\_
(apply
'concat
(split-string filename "/")))
(sxhash filename)))))
--
/L/e/k/t/u
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