Opening webp files in Emacs 28.1 on Windows
reddit / emacs

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[deleted] · 2022-04-14 00:55

I see that version 28.1 does not yet support webp. The current
developmental does. Are there some tweaks I can perform to get 28.1 to
show webp?

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xenodium · 2022-04-14 01:08

https://xenodium.com/emacs-viewing-webp-images/

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[deleted] · 2022-04-14 01:11

That solution did not work for me. :/

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7890yuiop · 2022-04-14 01:27

You should take a look at the relevant commits to master, and see
whether they are applicable to 28.

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[deleted] · 2022-04-14 01:39

[deleted]

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[deleted] · 2022-04-14 02:10

Are you referring to this:

[https://mail.gnu.org/archive/html/emacs-
diffs/2022-04/msg00238.html](https://mail.gnu.org/archive/html/emacs-
diffs/2022-04/msg00238.html)

I cannot apply this patch because I have not installed Emacs from
source but used the executable provided here:

https://www.gnu.org/software/emacs/download.html

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xenodium · 2022-04-14 02:14

Do you have error messages? Anything in *Messages* buffer? Do you have
imagemagick installed and working? Try it from the command line first.

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[deleted] · 2022-04-14 02:31

The error is "Unknown image type."

The image file appears like this as text.

I have installed ImageMagick and added it to my path.

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7890yuiop · 2022-04-14 02:52

I don't know (I'm not familiar with the feature; I'm only going by
your statement that it's been implemented in the development version);
but if that C code change *is* what's needed, then you cannot use this
in Emacs 28 without (at minimum) compiling it from source.

(Are you using MS-Windows?  The commit message is "Fix WebP image
support on MS-Windows".  Although it does suggest that C code changes
are going to be involved regardless, so you're probably out of luck if
you're not intending to compile Emacs.)

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[deleted] · 2022-04-14 03:01

Thank you. I will compile tomorrow.

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xenodium · 2022-04-14 03:35

Maybe verify if tool is found from Emacs. Can try opening eshell and
running mogrify or convert.

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[deleted] · 2022-04-14 05:38

>mogrify

I have done so. Both tools are available.

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xenodium · 2022-04-14 05:43

What’s the elisp snippet you’re using?

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[deleted] · 2022-04-14 05:44

I'm not sure I follow?

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xenodium · 2022-04-14 06:04

What’s all the elisp you’re using to set it up?

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Soupeeee · 2022-04-14 19:49

Unless you want to compile from scratch, I don't think you will be
able to. If you are on Windows 11, just use WSL to compile the master
branch, then use its ability to run graphical Linux programs.

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[deleted] · 2022-04-14 20:01

Unfortunately, I only have Win 10. Time for an upgrade?