GNU bug report logs - #49347
image-save not working as expected for transformed image saving!

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Message #19 received at 49347 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 49347 <at> debbugs.gnu.org, omar.i.elashkar <at> gmail.com
Subject: Re: bug#49347: image-save not working as expected for transformed
 image saving!
Date: Sun, 04 Jul 2021 17:07:15 +0300

> From: Lars Ingebrigtsen <larsi <at> gnus.org>
> Cc: Omar Elashkar <omar.i.elashkar <at> gmail.com>,  49347 <at> debbugs.gnu.org
> Date: Sun, 04 Jul 2021 15:46:22 +0200
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> >> 1. Open image in image-mode
> >> 2. rotate the image and resize it.
> >> 3. run image-save to save the transformed image.
> >> 
> >> Expected: find the saved image to be the transformed one.
> >> What happens: the image found is the old original one!
> 
> Emacs can't current export the "real" image data -- see bug#44172 (which
> I've now merged with this one).  It's not quite clear how to proceed
> with that bug report, because we leave the transforms to the OS, so
> Emacs doesn't have easy access to the actual displayed image data.

Maybe just document the limitation for now?

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