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bug#31211: 27.0.50; Pruning of command-history in command-execute is off


From: Basil L. Contovounesios
Subject: bug#31211: 27.0.50; Pruning of command-history in command-execute is off by one
Date: Wed, 18 Apr 2018 19:36:36 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Evaluating the following:

(let ((history-length 1))
  (dotimes (_ 2)
    (command-execute #'ignore t))
  (length command-history))

gives 2, instead of the expected 1.

Patch addressing this to follow.

-- 
Basil

In GNU Emacs 27.0.50 (build 6, x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll 
bars)
 of 2018-04-18 built on thunk
Repository revision: 5dff4905d73d0d42447ff4b114d1af726a689c6a
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Debian GNU/Linux buster/sid





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