From: Jukka K. Korpela (jkorpela@cs.tut.fi)
Date: Fri Feb 06 2009 - 14:10:42 CST
John H. Jenkins wrote:
> 在 Feb 6, 2009 10:59 AM 時， John (Eljay) Love-Jensen 寫到：
>
>> Are U+00030 through U+00039 uppercase or lowercase numbers? Or
>> neither / unspecified?
>>
>
> Neither/unspecified. Unicode considers numeral casing (and numeral
> spacing, which is a separate issue) glyphic variations which are not
> appropriate to embody in text encoding.
This may sound odd when compared with casing of Latin (and some other)
letters, but it can be argued that casing can make a semantic distinction
for letters (e.g., separating a generic noun from a proper noun), whereas
for digits, casing is stylistic and does not affect meaning.
Moreover, casing of digits is usually the same across a piece of text, i.e.
you use either lowercase digits or uppercase digits throughout the text.
This supports the idea that it’s stylistic variation, comparable to the
choice of a font (and quite often made through the choice of a font).
-- Yucca, http://www.cs.tut.fi/~jkorpela/
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