GNU bug report logs - #30466
25.3; Eshell: Ignore all duplicates when ignoredups is non-nil

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 30466 <at> debbugs.gnu.org, Pierre Neidhardt <ambrevar <at> gmail.com>
Subject: bug#30466: 25.3; Eshell: Ignore all duplicates when ignoredups is non-nil
Date: Thu, 04 Feb 2021 11:56:14 +0100

Glenn Morris <rgm <at> gnu.org> writes:

>> This does not prevent Eshell from cluttering the history with the same
>> commands as long as they are not consecutive (e.g. A, B, A, B...).
>>
>> I find more useful to always remove the duplicate entry back to the
>> first position.  It makes the history much lighter and much easier to
>> browse/filter.
>
> In terms of bash HISTCONTROL, this is the difference between
> "ignoredups" and "erasedups".
>
> Ref eg
> https://www.gnu.org/s/bash/manual/html_node/Bash-Variables.html#index-HISTCONTROL

Sounds useful to me, so I've now added this to Emacs 28.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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