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bug#39133: 28.0.50; Emacs slowdown on special char
From: |
Eli Zaretskii |
Subject: |
bug#39133: 28.0.50; Emacs slowdown on special char |
Date: |
Tue, 14 Jan 2020 17:26:45 +0200 |
> From: Evgeny Zajcev <lg.zevlg@gmail.com>
> Date: Tue, 14 Jan 2020 16:21:23 +0300
>
> I'm experiencing extreme Emacs slowdown when VARIATION SELECTOR-16 char
> is used somewhere in Emacs buffer. For example, I just executed:
>
> (insert "a\xfe0f")
>
> in *scratch* buffer. Moving cursor (when this char is visible) become
> unbearable. Here is the results of cpu profiling:
>
> - command-execute 776 62%
> - call-interactively 776 62%
> - funcall-interactively 675 54%
> - previous-line 476 38%
> - line-move 476 38%
> - line-move-1 476 38%
> + vertical-motion 225 18%
Does it help to set inhibit-compacting-font-caches non-nil?
> As I remember I did not experienced something similar in Emacs 26/27
I don't think Emacs < 27 supported variation selectors, did it?
- bug#39133: 28.0.50; Emacs slowdown on special char, Evgeny Zajcev, 2020/01/14
- bug#39133: 28.0.50; Emacs slowdown on special char,
Eli Zaretskii <=
- bug#39133: 28.0.50; Emacs slowdown on special char, Robert Pluim, 2020/01/14
- bug#39133: 28.0.50; Emacs slowdown on special char, Eli Zaretskii, 2020/01/15
- bug#39133: 28.0.50; Emacs slowdown on special char, Robert Pluim, 2020/01/24
- bug#39133: 28.0.50; Emacs slowdown on special char, Eli Zaretskii, 2020/01/24
- bug#39133: 28.0.50; Emacs slowdown on special char, Robert Pluim, 2020/01/24
- bug#39133: 28.0.50; Emacs slowdown on special char, Eli Zaretskii, 2020/01/24
- bug#39133: 28.0.50; Emacs slowdown on special char, Robert Pluim, 2020/01/24