L2/07-368

Date: Fri, 12 Oct 2007 18:21:15 -0700
Source: Mark Davis
Subject: Casing language

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I had action 111A57 to prepare a document. Here is the proposed text for U5.1:

The Unicode Standard provides default casing operations. There are circumstances
in which the default operations need to be tailored for specific locales or
environments. Some of these tailorings have data that is in the standard, in
the SpecialCasing.txt file, notable for the Turkish dotted capital I and
dotless small i. In other cases, more specialized tailored casing operations
may be appropriate. These include:

    * Titlecasing of IJ at the start of words in Dutch
    * Removal of accents when uppercasing letters in Greek
    * Uppercasing U+00DF ( § ) LATIN SMALL LETTER SHARP S to the new
    	U+XXXX LATIN CAPITAL LETTER SHARP S

However, these tailorings may or may not be desired, depending on the
environment. In particular, the U+XXXX LATIN CAPITAL LETTER SHARP S has
very limited documented usage, and is thus not the standard uppercase
for U+ 00DF ( § ) LATIN SMALL LETTER SHARP S. Thus with the default Unicode
casing operations, the capital sharp S will by default lowercase to the
small sharp S, but not the reverse. In those environments where the
reverse operation is needed, a tailored operation would be required.

-- 
Mark