What do confliciting aliases mean?

[Kurosaka, Teruhiko]

There are aliases that map to more than one converters in ICU.
For example Shift_JIS is an alias to both ibm-943_P14A-1999
and ibm-943_P130-1999, according to these:
http://oss.software.ibm.com/cgi-bin/icu/convexp?conv=ibm-943_P14A-1999&s=ALL
http://oss.software.ibm.com/cgi-bin/icu/convexp?conv=ibm-943_P130-1999&s=ALL

Which converter is actually used when Shift_JIS is specified ?
How ibm-943_P14A-1999 and ibm-943_P130-1999 differ?
What the middle element in these internal encoding names mean?

Thank you in advance.

T. "Kuro" Kurosaka
Internationalization Architect
teruhiko...@iona.com
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IONA Technologies
2350 Mission College Blvd. Suite 650
Santa Clara, CA 95054
Tel: (408) 350 9684/9500
Fax: (408) 350 9501
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[Markus Scherer]

Most charset names are extremely unreliable. For an example of some of the
problems with legacy Japanese charsets see
http://www.w3.org/TR/japanese-xml/

The easiest way to find out how two converters differ is to compare their
.ucm or .xml conversion table files.

The names are constructed as Unicode Technical Report #22 suggests, see
http://www.unicode.org/reports/tr22/
For IBM charsets, the number is the IBM CCSID, and the suffix after it is
a variant indicator generated from IBM's conversion table filenames. See
the ICU User Guide:
http://oss.software.ibm.com/icu/userguide/conversion-data.html

markus

Markus Scherer マルクス IBM GCoC-Unicode/ICU San José, CA
markus....@us.ibm.com





"Kurosaka, Teruhiko" <Teruhiko...@iona.com>
Sent by: icu-chars...@www-124.southbury.usf.ibm.com
2003-06-04 09:07


To: "ICU-Charsets (E-mail)" <icu-ch...@www-124.southbury.usf.ibm.com>
cc: "Kurosaka, Teruhiko" <teruhiko...@iona.com>
Subject: What do confliciting aliases mean?

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