From: Philippe Verdy (verdy_p@wanadoo.fr)
Date: Thu Feb 28 2008 - 07:21:18 CST
Asmus Freytag wrote:
> PS: whether or not "before, after" allows a break after the
> comma and the following space (2 characters) is beside the
> point for Japanese text, which customarily does NOT have spaces.
True, but you shouldbe more specific: Japanse text do not *encode* spaces,
because they are not needed with the glyph forms used by ideographic
punctuation signs that are larger than basic european punctuation.
Note that even when writing with halfwidth kanas, the punctuations are still
written with the fullwidth glyph that includes a spacing margin on the left
side. It can be said that the ideographic puntuations are composing in the
same square a narrow glyph for the punctuation sign itself, and a halfwidth
space. You don't need fiurther spacing after them. So the closing
ideographic punctuation are already followed internally by space. The rule
that was created for parentheses around optional Latin
prefixes/suffixes/infixes in the same word should not apply to ideographic
punctuations.
But this would require changing the line-breaking class for these large
ideographic punction signs to something else than OP and CL, when they
already embed na implied space, and then it would solve the problem by
treating them according to CL%AL as if these CL were CL SP and so CL × SP ÷
AL would correctly allow the linebreaking after the ideographic comma or
ideographic full stop...
But there remains the case of ideographic numbers written with fullwidth
digits, we should still have CL × NU to avoid breaking a number after a
grouping or decimal separator withing the same number...
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