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deckcraft/crates
Brandon ThomasandClaude Opus 5.5 257e79de27 Text: Japanese line breaking keeps small kana and "ー" off line starts; only commas and stops hang
Observed on PowerPoint's export of a wrapped Japanese paragraph (24 pt, 11 characters a line):
it breaks "けません(禁則処" / "理)。ー長音もで" / "す。っゃゅょ小書き文字", i.e. small kana
(っゃゅょ…), the prolonged sound mark and iteration marks never start a line (strict kinsoku),
where UAX #14's default allows it. And "し、句読点「、」や" / "「。」は…": with hanging punctuation on,
a closing bracket that overflows does not hang; only the ideographic comma and full stop (and
their full-width and half-width forms) do.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-13 06:48:43 -04:00
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