Subject: bug#70198: M-x shell: deal with environment variables present when tab expanding

From: Dan Jacobson <[email-masked]>
Date: Thu, 4 Apr 2024 21:51:01 +0800

In M-x shell
$ dat<TAB>
expands to date.
Alas, unlike bash readline,
$ LC_ALL=C dat<TAB>
doesn't yet.

emacs-version "29.3"