From: Kenichi Handa <handa@m17n.org>
To: Drew Adams <drew.adams@oracle.com>, 3526@emacsbugs.donarmstrong.com
Cc: emacs-pretest-bug@gnu.org
Subject: bug#3526: 23.0.94; `list-character-sets' display
Date: Thu, 11 Jun 2009 09:52:29 +0900 [thread overview]
Message-ID: <E1MEYWr-0004By-PK@etlken> (raw)
In-Reply-To: <CF216C40E93948CE89C4D4BEC2702E86@us.oracle.com> (drew.adams@oracle.com)
In article <CF216C40E93948CE89C4D4BEC2702E86@us.oracle.com>, "Drew Adams" <drew.adams@oracle.com> writes:
> What is a "supplementary character set"? Why are such sets listed
> separately? What sets are in the first, non "supplementary" list. IOW,
> why two lists, and what is the difference?
A supplementary character set is a character set defined
with `:supplementary-p' flag. The meaning of this flag is
(in the docstring of define-charset):
VALUE must be nil or t. If the VALUE is t, the charset is
supplementary, which means it is used only as a parent or a
subset of some other charset, or it is provided just for backward
compatibility.
For instance, gb18030-2-byte, gb18030-4-byte-bmp,
gb18030-4-byte-ext-1, gb18030-4-byte-ext-2, and
gb18030-4-byte-smp are all supplementary character sets to
define gb18030 which is a superset of the above all.
arabic-1-column, arabic-2-column, arabic-digit are also
supplementary character sets that are provided for backward
compatiblity.
Priorities of supplementary character sets are always lower
than the other character set, so, for instance (char-charset
CHAR) never return a supplementary character set.
---
Kenichi Handa
handa@m17n.org
next prev parent reply other threads:[~2009-06-11 0:52 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <87k4yb2wbz.fsf@stupidchicken.com>
2009-06-10 20:27 ` bug#3526: 23.0.94; `list-character-sets' display Drew Adams
2009-06-11 0:52 ` Kenichi Handa [this message]
2009-06-11 14:46 ` Drew Adams
2009-06-17 1:23 ` Kenichi Handa
2009-06-17 5:05 ` Drew Adams
2009-06-17 6:42 ` Kenichi Handa
2009-06-17 14:56 ` Drew Adams
2009-06-17 15:55 ` Jason Rumney
2009-06-17 16:13 ` Drew Adams
2009-06-18 0:50 ` Kenichi Handa
2009-06-18 1:01 ` Drew Adams
2009-10-31 19:40 ` bug#3526: marked as done (23.0.94; `list-character-sets' display) Emacs bug Tracking System
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