* 仕様書

- [12] [CITE@en-us[UAX #44: Unicode Character Database]] ([TIME[2010-10-09 06:36:55 +09:00]] 版) <http://www.unicode.org/reports/tr44/#White_Space>

* メモ

[1] [CITE@en-us[Unicode Character Database]] ([TIME[2008-03-26 03:06:22 +09:00]] 版) <http://unicode.org/Public/UNIDATA/UCD.html#White_Space>

[2] [CITE[PropList-5.1.0.txt]] ([TIME[2008-03-21 06:31:08 +09:00]] 版) <http://unicode.org/Public/5.1.0/ucd/PropList.txt>

[PRE[
0009..000D    ; White_Space # Cc   [5] <control-0009>..<control-000D>
0020          ; White_Space # Zs       SPACE
0085          ; White_Space # Cc       <control-0085>
00A0          ; White_Space # Zs       NO-BREAK SPACE
1680          ; White_Space # Zs       OGHAM SPACE MARK
180E          ; White_Space # Zs       MONGOLIAN VOWEL SEPARATOR
2000..200A    ; White_Space # Zs  [11] EN QUAD..HAIR SPACE
2028          ; White_Space # Zl       LINE SEPARATOR
2029          ; White_Space # Zp       PARAGRAPH SEPARATOR
202F          ; White_Space # Zs       NARROW NO-BREAK SPACE
205F          ; White_Space # Zs       MEDIUM MATHEMATICAL SPACE
3000          ; White_Space # Zs       IDEOGRAPHIC SPACE
]PRE]

[3] [[Zs]] と比べると、
- [[U+0009]]~[[U+000D]] が入ってる
- [[U+0085]] が入ってる
- [[U+0028]]、[[U+2029]] が入ってる

[4] 将来にわたって [[Zs]] の[[超集合]]であることが保証されているのかは謎。