Problem with Emacs introduced between 6.9.9-13 and 6.9.9-14

[karvus]

When upgrading from 6.9.9-13 to 6.9.9-14 or 6.9.9-15 a regression seems to have been introduced, breaking interaction with Emacs (25.3.1) in some way.

To reproduce:

• launch emacs
• open a .png file
• M-x image-transform-reset

which should yield the error to *Messages*

Code: Select all

ImageMagick error: no decode delegate for this image format `PNG' @ error/constitute.c/ReadImage/504

Note that libpng is installed, and that PNG is listed as a delegate as shown below, and that conversion works from the command line.

This bug has been reported earlier on the Arch Linux bugtracker: https://bugs.archlinux.org/task/55690

More information about running software:

Code: Select all

$ convert --version | head 1
Version: ImageMagick 6.9.9-15 Q16 x86_64 2017-09-23 http://www.imagemagick.org

$ convert -list configure | grep DEL
DELEGATES      bzlib mpeg fontconfig freetype gslib jng jpeg lcms lqr lzma openexr openjp2 pango png ps raqm raw rsvg tiff webp wmf x xml zlib
$ uname -a
Linux dora 4.12.13-1-ARCH #1 SMP PREEMPT Fri Sep 15 06:36:43 UTC 2017 x86_64 GNU/Linux

$ emacs --version | head -1
GNU Emacs 25.3.1

Cheers

[karvus]

Any suggestions how I can dig out some more relevant information about this?

Cheers, Thomas

[dlemstra]

I think your issue is already solved in the latest version of ImageMagick. I think it is related to this issue: https://github.com/ImageMagick/ImageMagick/issues/825

[karvus]

True! Upgrading to 6.9.19 from 6.9.13 fixed the problem for me.

Cheers