FA-3512 / Lexical grammars / Member archive
A Unicode escape has variable hexadecimal width · case 02
A Unicode escape has variable hexadecimal width.
Case contract
Accept literal backslash-u followed by exactly four hex digits.
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 fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| boundary 1 | true | false | Failed |
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