FA-80315 / Typography line breaking / Member archive

URL line breaking: double slash integrity · case 05

URLs are broken between the two slashes of "//".

Member previewVariant 5 · 3 implementations · 8 checks per implementation

Case contract

Input [url, width]. Break opportunities (no hyphen added): after ":"; after "//" (never between its slashes); before a single "/"; before . - _ ? # % ~; before or after = and &. While the rest exceeds the width, break at the latest opportunity within width characters, else hard-break at width. Return 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: double slash integrity	`["https:/", "/", "example", ".com", "/path", "/to", "/page", ".html"]`	`["https:", "//", "example", ".com", "/path", "/to", "/page", ".html"]`	Failed

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