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bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26
From: |
Drew Adams |
Subject: |
bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26 |
Date: |
Wed, 28 Feb 2018 11:53:49 -0800 (PST) |
> But I have noticed that displaying files containing certain Unicode
> characters can lock Emacs for a little while. I wonder if that is
> also some manifestation of this bug. Do you also see a slow down when
> you visit a file containing the characters in the `char-names'
> variable you defined? Or is the slowness limited to running them
> through `char-displayable-p'?
If `inhibit-compacting-font-caches is `t' then there is no
slowdown in `char-displayable-p'. The slowdown is for chars
that are not displayable, it seems.
If such chars are inserted in a buffer where they are not
displayable (which happens in my case) then they appear
as rectangles enclosing the char code. There is no slowdown
displaying that - the chars themselves are not displayed.
(I was using `char-displayable-p' to optionally exclude
such chars from a list of chars and their descriptions.)
- bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26, Drew Adams, 2018/02/19
- bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26, Drew Adams, 2018/02/20
- bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26, Drew Adams, 2018/02/22
- bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26, Noam Postavsky, 2018/02/22
- bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26, Drew Adams, 2018/02/22
- bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26, Noam Postavsky, 2018/02/22
- bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26, Drew Adams, 2018/02/22
- bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26, Eli Zaretskii, 2018/02/23
bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26, Charles A. Roelli, 2018/02/28
- bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26,
Drew Adams <=