Re: master 8542f66 2/3: Automatically rotate images in image-mode based on Exif data

[Robert Pluim]

>>>>> On Sun, 22 Sep 2019 08:23:54 -0400 (EDT), address@hidden (Lars 
>>>>> Ingebrigtsen) said:

    Lars> branch: master
    Lars> commit 8542f666023931f85817f590926cc3e9bc992b68
    Lars> Author: Lars Ingebrigtsen <address@hidden>
    Lars> Commit: Lars Ingebrigtsen <address@hidden>

    Lars>     Automatically rotate images in image-mode based on Exif data
    
    Lars>     * lisp/image-mode.el (image-toggle-display-image): Get the
    Lars>     orientation from the Exif data, if any.

So I attempted to visit a PNG file from emacs, and got a buffer
containing the image data, and the following in *Messages*

    Cannot display image: ((app1 (cdr (assq 65505 (exif--parse-jpeg)))))

Itʼs unclear to me whether emacs should be able to display PNG
natively here. (featurep 'png) is nil, but this is on macOS, which
allegedly has builtin support for PNG. In any case Iʼm not expecting
an error message about exif data.

Robert