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Re: set-fontset-font is slow if the fontset is specified by a long name
From: |
Kenichi Handa |
Subject: |
Re: set-fontset-font is slow if the fontset is specified by a long name |
Date: |
Mon, 25 Oct 2004 11:01:07 +0900 (JST) |
User-agent: |
SEMI/1.14.3 (Ushinoya) FLIM/1.14.2 (Yagi-Nishiguchi) APEL/10.2 Emacs/21.3 (sparc-sun-solaris2.6) MULE/5.0 (SAKAKI) |
In article <address@hidden>, YAMAMOTO Mitsuharu <address@hidden> writes:
> When a fontset name is specified in a long format, set-fontset-font
> takes much time to complete. For example, the evaluation of the
> following expression terminates instantly.
> (dotimes (i 100)
> (set-fontset-font "fontset-default"
> 'latin-iso8859-1
> '("helvetica" . "iso8859-1")))
> But if we replace "fontset-default" with
> "-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default", then it becomes much
> slower.
> (dotimes (i 100)
> (set-fontset-font "-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default"
> 'latin-iso8859-1
> '("helvetica" . "iso8859-1")))
set-fontset-font converts NAME into a regular expression
while converting every '*' into '.*'. So, the above
slowness is because of this regular-expression processing is
slow.
(string-match "-.*-.*-.*-.*-.*-.*-.*-.*-.*-.*-.*-.*-fontset-default"
"-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default"))
I fixed the code so that convert '*' to "[^-]*" if full XLFD
is given. This speedups the second example, but still the
first one is faster because it's registered in
fontset-alias-alist.
If you want to make this faster in 21.3, please try
---
Ken'ichi HANDA
address@hidden
- set-fontset-font is slow if the fontset is specified by a long name, YAMAMOTO Mitsuharu, 2004/10/24
- Re: set-fontset-font is slow if the fontset is specified by a long name,
Kenichi Handa <=
- Re: set-fontset-font is slow if the fontset is specified by a long name, YAMAMOTO Mitsuharu, 2004/10/24
- Re: set-fontset-font is slow if the fontset is specified by a long name, Kenichi Handa, 2004/10/25
- Re: set-fontset-font is slow if the fontset is specified by a long name, YAMAMOTO Mitsuharu, 2004/10/25
- Re: set-fontset-font is slow if the fontset is specified by a long name, Kenichi Handa, 2004/10/25
- Re: set-fontset-font is slow if the fontset is specified by a long name, Richard Stallman, 2004/10/26
- Re: set-fontset-font is slow if the fontset is specified by a long name, Kenichi Handa, 2004/10/27
- Re: set-fontset-font is slow if the fontset is specified by a long name, Richard Stallman, 2004/10/29
- Re: set-fontset-font is slow if the fontset is specified by a long name, Kenichi Handa, 2004/10/29
- Re: set-fontset-font is slow if the fontset is specified by a long name, Richard Stallman, 2004/10/30