GNU bug report logs - #48841
fido-mode is slower than ido-mode with similar settings

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Dmitry Gutov <dgutov <at> yandex.ru>
Cc: mail <at> daniel-mendler.de, joaotavora <at> gmail.com, monnier <at> iro.umontreal.ca, 48841 <at> debbugs.gnu.org, 47711 <at> debbugs.gnu.org
Subject: bug#48841: bug#47711: [PATCH VERSION 2] Add new `completion-filter-completions` API and deferred highlighting
Date: Mon, 16 Aug 2021 14:48:39 +0300

> Cc: 47711 <at> debbugs.gnu.org, monnier <at> iro.umontreal.ca, joaotavora <at> gmail.com,
>  48841 <at> debbugs.gnu.org
> From: Dmitry Gutov <dgutov <at> yandex.ru>
> Date: Mon, 16 Aug 2021 06:26:58 +0300
> 
> On 14.08.2021 10:01, Eli Zaretskii wrote:
> 
> > Just to make sure we are on the same page: adding a text property to a
> > string doesn't mutate a string.  Lisp programs that process these
> > strings will not necessarily see any difference, and displaying those
> > strings will also not show any difference if the property is not
> > related to display.  So the assumption that seems to be made here,
> > that adding a property is the same as mutating a string, is IMO
> > inaccurate if not incorrect.
> 
> This is nonsense.
> 
> A program won't necessarily see a difference in *any* changed value, as 
> long as some part of it stays the same.
> 
> I can zero out the tail of a string, and have a program that only looks 
> at its first few characters. It wouldn't mean that a string hasn't changed.

You are not making any sense.

Anyway, if what I wrote doesn't help, feel free to disregard it.

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