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A language label has an empty or overlong subtag · case 05

A language label has an empty or overlong subtag.

Member previewVariant 5 · 3 implementations · 4 checks per implementation

Case contract

Accept 2..8 ASCII letters followed by hyphen-separated 1..8 alphanumeric subtags.

Why this case matters

A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.

One recorded failure

Sample boundary fixture

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

Boundary fixtureActualExpectedOutcome
boundary 1truefalseFailed

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