Source: Mark Davis
Date: July 27, 2006
Subject: Halfwidth voice marks in Grapheme_Extend
The half-width voicing marks should have been combining characters in Unicode and 10646 (the Japanese objected to it, unfortunately). However, the Extend property used in breaking words, etc, (http://www.unicode.org/reports/tr29/) could and should add those characters.
I propose we add
U+FF9E (ﾞ) HALFWIDTH KATAKANA VOICED SOUND MARK
U+FF9F (ﾟ) HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
to Other_Grapheme_Extend inhttp://www.unicode.org/Public/UNIDATA/PropList.txt
LineBreak is already ok.