From: Juri Linkov <juri@jurta.org>
To: Kenichi Handa <handa@m17n.org>
Cc: tzz@lifelogs.com, emacs-devel@gnu.org
Subject: Re: inputting characters by hexadigit
Date: Sun, 20 Jul 2008 03:29:14 +0300 [thread overview]
Message-ID: <87sku5if8t.fsf_-_@jurta.org> (raw)
In-Reply-To: <E1KK0yx-0006kT-Kg@etlken.m17n.org> (Kenichi Handa's message of "Sat, 19 Jul 2008 10:11:31 +0900")
>> + (defun read-char-by-name (prompt)
>> + "Read a character by its Unicode name or hex number string.
>> + Display PROMPT and read a string that represent a character
>> + by its Unicode property `name' or `old-name'. It also accepts
>> + a hexadecimal number of Unicode code point. Returns a character
>> + as a number."
>> + (let (name names)
>> + (dotimes (c #x10FFFF)
>> + (if (setq name (get-char-code-property c 'name))
>> + (setq names (cons (cons name c) names)))
>> + (if (setq name (get-char-code-property c 'old-name))
>> + (setq names (cons (cons name c) names))))
>> + (or (cdr (assoc (setq name (completing-read prompt names)) names))
>> + (string-to-number name 16))))
>> +
>
> I think it is better to skip these ranges:
> #x3400..#x4dbf -- CJK Ideograph Extension A
> #x4e00..#x9fff -- CJK Ideograph
> #xd800..#xfaFF -- surroage-pair, private use, CJK COMPATIBILITY IDEOGRAPH
> #x20000..#x2ffff -- CJK Ideograph Extension B
> and end the loop at #xeffff (#xf0000.. are for private use)
Actually there are no Unicode names in these ranges in UnicodeData.txt.
It has only lines for the first and the last character in these ranges:
3400;<CJK Ideograph Extension A, First>;Lo;0;L;;;;;N;;;;;
4DB5;<CJK Ideograph Extension A, Last>;Lo;0;L;;;;;N;;;;;
4E00;<CJK Ideograph, First>;Lo;0;L;;;;;N;;;;;
9FC3;<CJK Ideograph, Last>;Lo;0;L;;;;;N;;;;;
D800;<Non Private Use High Surrogate, First>;Cs;0;L;;;;;N;;;;;
DB7F;<Non Private Use High Surrogate, Last>;Cs;0;L;;;;;N;;;;;
DB80;<Private Use High Surrogate, First>;Cs;0;L;;;;;N;;;;;
DBFF;<Private Use High Surrogate, Last>;Cs;0;L;;;;;N;;;;;
DC00;<Low Surrogate, First>;Cs;0;L;;;;;N;;;;;
DFFF;<Low Surrogate, Last>;Cs;0;L;;;;;N;;;;;
E000;<Private Use, First>;Co;0;L;;;;;N;;;;;
F8FF;<Private Use, Last>;Co;0;L;;;;;N;;;;;
20000;<CJK Ideograph Extension B, First>;Lo;0;L;;;;;N;;;;;
2A6D6;<CJK Ideograph Extension B, Last>;Lo;0;L;;;;;N;;;;;
F0000;<Plane 15 Private Use, First>;Co;0;L;;;;;N;;;;;
FFFFD;<Plane 15 Private Use, Last>;Co;0;L;;;;;N;;;;;
100000;<Plane 16 Private Use, First>;Co;0;L;;;;;N;;;;;
10FFFD;<Plane 16 Private Use, Last>;Co;0;L;;;;;N;;;;;
If it would be possible to loop over names instead of loop over all
characters to check for their names, then this code would be more fast,
but I don't see how it would be possible to loop over all defined names
in UnicodeData.txt.
If this is not possible then we could optimize the loop over all
characters in the chartable to skip these useless ranges.
--
Juri Linkov
http://www.jurta.org/emacs/
next prev parent reply other threads:[~2008-07-20 0:29 UTC|newest]
Thread overview: 160+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-15 17:41 describe-char should display the character's Unicode name Ted Zlatanov
2008-07-15 20:42 ` Juri Linkov
2008-07-16 2:29 ` Kenichi Handa
2008-07-17 0:35 ` Juri Linkov
2008-07-17 1:26 ` Kenichi Handa
2008-07-17 14:09 ` Ted Zlatanov
2008-07-17 23:40 ` Juri Linkov
2008-07-18 0:10 ` Miles Bader
2008-07-18 0:47 ` inputting characters by hexadigit Kenichi Handa
2008-07-18 0:54 ` Lennart Borgman (gmail)
2008-07-18 1:01 ` Miles Bader
2008-07-18 4:48 ` David De La Harpe Golden
2008-07-18 12:39 ` Miles Bader
2008-07-18 16:17 ` Stephen J. Turnbull
2008-07-18 17:33 ` David De La Harpe Golden
2008-07-18 18:08 ` James Cloos
2008-07-18 18:59 ` Stephen J. Turnbull
2008-07-18 21:29 ` James Cloos
2008-07-19 0:30 ` Juri Linkov
2008-07-21 1:41 ` Stefan Monnier
2008-07-21 5:35 ` David De La Harpe Golden
2008-07-22 22:59 ` Juri Linkov
2008-07-22 23:17 ` Lennart Borgman (gmail)
2008-07-22 23:29 ` David De La Harpe Golden
2008-07-29 16:07 ` Juri Linkov
2008-07-29 18:00 ` Stefan Monnier
2008-07-19 5:49 ` Stephen J. Turnbull
2008-07-19 0:13 ` Miles Bader
2008-07-19 0:29 ` Juri Linkov
2008-07-19 0:27 ` Juri Linkov
2008-07-20 20:28 ` Juri Linkov
2008-07-21 1:46 ` Stefan Monnier
2008-07-21 5:07 ` David De La Harpe Golden
2008-07-21 6:04 ` Stefan Monnier
2008-07-21 9:01 ` Juri Linkov
2008-07-21 11:04 ` Johan Bockgård
2008-07-21 11:11 ` David Kastrup
2008-07-21 14:20 ` Johan Bockgård
2008-07-21 14:24 ` David Kastrup
2008-07-21 14:33 ` Lennart Borgman (gmail)
2008-07-21 14:37 ` David Kastrup
2008-07-21 19:25 ` James Cloos
2008-07-21 19:53 ` Stefan Monnier
2008-07-21 20:23 ` Miles Bader
2008-07-21 20:38 ` Lennart Borgman (gmail)
2008-07-21 21:49 ` Johan Bockgård
2008-07-21 22:03 ` David Kastrup
2008-07-21 23:37 ` Johan Bockgård
2008-07-22 1:26 ` David De La Harpe Golden
2008-07-22 22:52 ` Juri Linkov
2008-07-21 20:31 ` David Kastrup
2008-07-21 20:36 ` David De La Harpe Golden
2008-07-21 20:43 ` David Kastrup
2008-07-21 20:50 ` Lennart Borgman (gmail)
2008-07-21 21:12 ` David Kastrup
2008-07-21 21:03 ` Alfred M. Szmidt
2008-07-21 21:24 ` Drew Adams
2008-07-22 4:03 ` Miles Bader
2008-07-21 21:06 ` David De La Harpe Golden
2008-07-22 4:04 ` Miles Bader
2008-07-21 20:31 ` James Cloos
2008-07-21 21:11 ` David De La Harpe Golden
2008-07-21 23:43 ` Juri Linkov
2008-07-22 4:06 ` Miles Bader
2008-07-21 16:54 ` David De La Harpe Golden
2008-07-21 17:04 ` David De La Harpe Golden
2008-07-21 6:16 ` David Kastrup
2008-07-22 0:51 ` Kenichi Handa
2008-07-22 7:56 ` Juanma Barranquero
2008-07-22 8:33 ` Miles Bader
2008-07-22 10:57 ` Juanma Barranquero
2008-07-22 12:26 ` Kenichi Handa
2008-07-22 12:33 ` Lennart Borgman (gmail)
2008-07-22 12:35 ` Miles Bader
2008-07-22 16:16 ` Stefan Monnier
2008-07-22 16:54 ` Drew Adams
2008-07-22 20:38 ` Alfred M. Szmidt
2008-07-22 22:55 ` Juri Linkov
2008-07-23 0:08 ` David De La Harpe Golden
2008-07-23 2:18 ` Miles Bader
2008-07-22 22:54 ` Juri Linkov
2008-07-23 0:28 ` Miles Bader
2008-07-23 1:02 ` Kenichi Handa
2008-07-23 2:32 ` Stefan Monnier
2008-07-23 3:18 ` Miles Bader
2008-07-23 3:38 ` David De La Harpe Golden
2008-07-23 3:53 ` Stefan Monnier
2008-07-23 4:26 ` David De La Harpe Golden
2008-07-23 19:19 ` Stefan Monnier
2008-07-23 20:26 ` David De La Harpe Golden
2008-07-23 9:03 ` Juri Linkov
2008-07-23 10:15 ` Miles Bader
2008-07-23 14:27 ` Juri Linkov
2008-07-23 14:58 ` Miles Bader
2008-07-22 14:06 ` Drew Adams
2008-07-23 13:01 ` Ted Zlatanov
2008-07-23 13:05 ` Lennart Borgman (gmail)
2008-07-23 13:44 ` Drew Adams
2008-07-23 14:27 ` Juri Linkov
2008-07-23 19:24 ` Stefan Monnier
2008-07-23 22:32 ` Juri Linkov
2008-07-24 2:05 ` Stefan Monnier
2008-07-29 15:51 ` Juri Linkov
2008-07-29 17:33 ` Chong Yidong
2008-07-29 17:51 ` Juri Linkov
2008-07-29 19:55 ` Stefan Monnier
2008-07-29 20:51 ` Chong Yidong
2008-07-30 15:29 ` Juri Linkov
2008-07-31 19:20 ` Ted Zlatanov
2008-07-18 0:38 ` describe-char should display the character's Unicode name Kenichi Handa
2008-07-18 0:58 ` Miles Bader
2008-07-18 13:33 ` Ted Zlatanov
2008-07-18 13:53 ` Drew Adams
2008-07-18 14:31 ` Stefan Monnier
2008-07-18 15:22 ` Ted Zlatanov
2008-07-19 0:45 ` Juri Linkov
2008-07-21 16:35 ` Ted Zlatanov
2008-07-21 16:35 ` Lennart Borgman (gmail)
2008-07-21 16:58 ` David De La Harpe Golden
2008-07-22 22:57 ` Juri Linkov
2008-07-23 14:47 ` Ted Zlatanov
2008-07-23 22:31 ` Juri Linkov
2008-07-23 22:52 ` Lennart Borgman (gmail)
2008-07-24 13:29 ` Ted Zlatanov
2008-07-24 13:39 ` Lennart Borgman
2008-07-24 15:27 ` Ted Zlatanov
2008-07-24 15:34 ` Lennart Borgman (gmail)
2008-07-25 0:41 ` Juri Linkov
2008-07-25 2:24 ` Kenichi Handa
2008-07-19 0:35 ` Juri Linkov
2008-07-19 1:11 ` Kenichi Handa
2008-07-20 0:29 ` Juri Linkov [this message]
2008-07-20 1:23 ` inputting characters by hexadigit Kenichi Handa
2008-07-20 20:27 ` Juri Linkov
2008-07-23 14:37 ` Ted Zlatanov
2008-07-23 19:31 ` Stefan Monnier
2008-07-23 20:19 ` Ted Zlatanov
2008-07-24 2:08 ` Stefan Monnier
2008-07-24 13:20 ` Ted Zlatanov
2008-07-24 13:40 ` Lennart Borgman
2008-07-24 14:03 ` Stefan Monnier
2008-07-24 15:25 ` Ted Zlatanov
2008-07-24 16:06 ` Stefan Monnier
2008-07-24 17:00 ` Drew Adams
2008-07-24 18:15 ` Ted Zlatanov
2008-07-24 18:37 ` Drew Adams
2008-07-28 13:56 ` Ted Zlatanov
2008-07-24 20:12 ` Stefan Monnier
2008-07-24 20:27 ` Drew Adams
2008-07-24 20:37 ` Lennart Borgman (gmail)
2008-07-24 21:30 ` Lennart Borgman (gmail)
2008-07-24 21:59 ` Lennart Borgman (gmail)
2008-07-28 14:00 ` Ted Zlatanov
2008-07-23 22:35 ` Juri Linkov
2008-07-23 23:00 ` Lennart Borgman (gmail)
2008-07-24 2:18 ` Stefan Monnier
2008-07-25 0:52 ` Juri Linkov
2008-07-24 13:24 ` Ted Zlatanov
2008-07-24 15:55 ` Drew Adams
2008-07-19 0:35 ` describe-char should display the character's Unicode name Juri Linkov
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