FA-80018 / Typography line breaking / Member archive

CJK kinsoku line breaking: push-out chain · case 03

A run of two prohibited characters still starts the next line.

Member previewVariant 3 · 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: push-out chain	`["\u3044\u3002\uff08\uff09\u3002\u3051", "\u3046\u7d44\u3002\u304d\u6587\u6587", "\u65e5\u6587\u6587\u3048\u3063", "\u3001\u300f\u3042\u300f\u5b57\u7d44", "\u672c"]`	`["\u3044\u3002\uff08\uff09\u3002\u3051", "\u3046\u7d44\u3002\u304d\u6587\u6587", "\u65e5\u6587\u6587", "\u3048\u3063\u3001\u300f\u3042\u300f", "\u5b57\u7d44\u672c"]`	Failed

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