FA-80025 / Typography line breaking / Member archive

CJK kinsoku line breaking: line-end prohibition index · case 05

Lines end with an opening bracket.

Member previewVariant 5 · 3 implementations · 8 checks per implementation

Case contract

Input [text of full-width characters, line length L]. Lines take L characters. If the next character is a hanging comma/period (、。，．) and is not itself followed by a line-start-prohibited character, it hangs on the line (burasage). Otherwise move characters to the next line while the next line would start with a prohibited character (、。，．）」』！？ー and small kana), then while the line would end with an opening bracket; a line keeps at least one character. Return the lines.

Why this case matters

Line breaking decides where paragraphs wrap on screen and in print; a wrong decision point shifts every following line.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression: line-end prohibition index	`["\u300c\u65e5\u3046\uff08\u3063\u3002", "\u304d\u300c\u3002\u3051\u65e5\u300c", "\u3042\u300e\u30fc\u304b\u7248\u6587", "\u6587\u3042\uff08\u300c"]`	`["\u300c\u65e5\u3046\uff08\u3063\u3002", "\u304d\u300c\u3002\u3051\u65e5", "\u300c\u3042\u300e\u30fc\u304b\u7248", "\u6587\u6587\u3042\uff08\u300c"]`	Failed

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