Re: image-dired: Check all external programs available

[Mathias Dahl]

As you know, 'convert' also can rotate an image.

Yes, it probably can, but as I remember it, the rotation is lossy, i.e. it makes the JPEG data worse than before the rotation. jpegtran was able to do lossless rotation, which is why I picked it. For thumbnails it would not matter but for rotating original files it's not nice to loose information/quality. As long as users can get hold of jpegtran I think it should be the default program used for rotation.

I will keep testing during this week.  Then, if everything is OK
i will push the patch to the Emacs repository.

Sounds good, thanks for doing this!

/Mathias