[Bug 23272] FFFTP: shows only the first line of the Japanese legend.

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=23272





--- Comment #10 from Sagawa <sagawa.aki+winebugs at gmail.com>  2010-06-28 08:11:31 ---
(In reply to comment #9)
> (In reply to comment #7)
> > Created an attachment (id=29164)
 --> (http://bugs.winehq.org/attachment.cgi?id=29164) [details] [details]
> > proposed patch for CJK word break rule 2
> 
> Why using GetStringTypeW() is not enough?

OK, there are three reasons.

1. Hangul Syllables
   Hangul Syllables characters (i.e. U+AC00-U+D7A3) are classified into
C3_ALPHA, not C3_KATAKANA, C3_HIRAGANA, C3_IDEOGRAPH. And Thai alphabets
(e.g.U+0E01) also have the same classification. In my knowledge, the former can
be break in words, but the latter is not. But GetStringTypeW() just returns
C3_ALPHA for both of them. Therefore, we cannot make a distinction between them
with CT_CTYPE3 information. 

2. CJK symbols
   In CJK codepage, some symbol characters are defined and used. For instance,
following characters are used in Japanese text:
  - U+3005(IDEOGRAPHIC ITERATION MARK)
  - U+300F(RIGHT WHITE CORNER BRACKET)
  - U+3231(PARENTHESIZED IDEOGRAPH STOCK)
  - U+339E (SQUARE KM)
   But they aren't hiragana, katakana or ideographic characters as for
GetStringTypeW(). They are C3_NOTAPPLICABLE or C3_SYMBOL character. Therefore,
they have same problem. Not only them but also other non-CJK script characters
have C3_NOTAPPLICABLE or C3_SYMBOL class. In my opinion, because above
character is a part of CJK texts, they should word-wrap like ideographic
characters (not western style).

3. Kinsoku shori
   In CJK text, it can break in words. However, there are some exceptions
called Kinsoku shori (Japanese publishing term). In short, some characters are
not allowed at the start of a line, and some of others are not allowed at the
end of a line. For details, please refer Wikipedia
(http://en.wikipedia.org/wiki/Kinsoku_shori) or W3C Working Group Note
(http://www.w3.org/TR/2009/NOTE-jlreq-20090604/#en-subheading2_1_7).
   These special characters are not determined by GetStringTypeW(), but it
needs to format CJK texts properly. Thus, I added a table without the API for
the basic implementation of Kinsoku shori.

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