bug#57636: [PATCH] Recognize zstandard (.zst) suffix in lisp/info.el

[Eli Zaretskii <eliz@gnu.org>]

> Cc: Sam James <sam@gentoo.org>
> From: Sam James <sam@gentoo.org>
> Date: Wed,  7 Sep 2022 05:00:40 +0100
> 
> * lisp/info.el (Info-suffix-list): Recognize .zst file extension from the
> zstd compression tool. This allos reading Info pages compressed with zstandard.
> ---
>  lisp/info.el | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/lisp/info.el b/lisp/info.el
> index 1a58910c3a..fdbe1f9b90 100644
> --- a/lisp/info.el
> +++ b/lisp/info.el
> @@ -451,6 +451,7 @@ or `Info-virtual-nodes'."
>         (".info.z"    . "gunzip")
>         (".info.bz2"  . ("bzip2" "-dc"))
>         (".info.xz"   . "unxz")
> +       (".info.zst"  . ("unzstd" "--rm" "-q"))

Thanks, but I don't think I understand the --rm part: these commands
aren't supposed to replace the original compressed file with its
decompressed version, they are supposed to write the decompressed text
to stdout, where it will be read by Emacs and displayed, and leave the
original compressed files alone.

So I think you want "-dc", not "--rm -q".  Am I missing something?