From: Mark Davis (firstname.lastname@example.org)
Date: Thu Apr 29 2004 - 10:53:47 EDT
► शिष्यादिच्छेत्पराजयम् ◄
----- Original Message -----
From: "Theo Veenker" <Theo.Veenker@let.uu.nl>
To: "unicode" <email@example.com>
Sent: Thu, 2004 Apr 29 00:02
Subject: conditional case mappings
> I have two questions about the special case mappings.
for others: http://www.unicode.org/Public/4.0-Update1/SpecialCasing-4.0.1.txt
> Some conditional case mappings map to a zero length code point string.
> Is it valid to assume this will never happen for non-conditional mappings?
I can't imagine a case like that.
> What are the values for the Special_Case_Condition; is is the contexts,
> or the contexts plus the locales?
Most people actually evaluate this in code, and we have not expressed it clearly
in terms of a property. It would be something like:
code point =>
(lowercase, (locale, condition, result), (locale, condition,
(titlecase, (locale, condition, result), (locale, condition,
(uppercase, (locale, condition, result), (locale, condition,
Now, in practice, we don't really have cases where a character maps differently
(from the default) according to two different locales or conditions, or more
than one casing condition.
So faced with lines like the following:
0049; 0131; 0049; 0049; tr Not_Before_Dot; # LATIN CAPITAL LETTER I
0049; 0131; 0049; 0049; az Not_Before_Dot; # LATIN CAPITAL LETTER I
the value, if treated as a single property value is really collapsed to:
U+0049 -> [uppercasing, tr OR az, Not_Before_Dot, U+0131]
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