GNU bug report logs - #65763
Error opening a file from a Git working directory if Git is not installed

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Paul Pogonyshev <pogonyshev <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Error opening a file from a Git working directory if Git is not
 installed
Date: Tue, 5 Sep 2023 20:54:54 +0200

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To reproduce:

1. Change current directory to a Git checkout (e.g. `~/git/emacs' or
something).
2. From the command line:

       $ emacs --batch --eval "(progn (setf vc-git-program
\"git-is-not-installed\") (find-file-noselect \"whatever\"))"
       Error: (file-missing "Searching for program" "No such file or
directory" "git-is-not-installed")

Expected: Emacs is able to open the file, Git must not be essential.

Usecase: on the real machine Git _is_ of course installed, but then you run
Emacs inside a Docker container that has _no_ Git, with a directory mapped
from your physical machine.  In this setup there is appearance of a Git
working directory, yet Git executable is not available.

Appears to work fine up to Emacs 27, broken starting with Emacs 28.

Paul

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