Subject: dired-view-file vs. .7z

From: Dan Jacobson <[email-masked]>
Date: Wed, 18 Jan 2023 08:52:06 +0800

dired-view-file knows how to deal with .gz,
but not .7z.

$ apropos 7z
7z (1)               - A file archiver with high compression ratio format
7za (1)              - A file archiver with high compression ratio format
7zr (1)              - A file archiver with high compression ratio format
p7zip (1)            - Wrapper on 7-Zip file archiver with high compression ratio