From cb036a79e2261569d900d6b78f283c441afd5b04 Mon Sep 17 00:00:00 2001
From: Stefan Kangas <stefankangas@gmail.com>
Date: Thu, 8 Sep 2022 02:48:46 +0200
Subject: [PATCH] dired-guess: Support zstandard archives

* lisp/dired-aux.el (dired-guess-shell-alist-default): Support
zstandard archives.
---
 lisp/dired-aux.el | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lisp/dired-aux.el b/lisp/dired-aux.el
index 0e8062af528..f870494e93e 100644
--- a/lisp/dired-aux.el
+++ b/lisp/dired-aux.el
@@ -1169,6 +1169,10 @@ Return the result of `process-file' - zero for success."
          ;; Optional decompression.
          "unxz")
 
+   ;; zstandard archives
+   `(,(rx (or ".tar.zst" ".tzst") eos) "unzstd -c %i | tar -xf -")
+   `(,(rx ".zst" eos)                  "unzstd --rm")
+
    '("\\.shar\\.Z\\'" "zcat * | unshar")
    '("\\.shar\\.g?z\\'" "gunzip -qc * | unshar")
 
-- 
2.39.2