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Invisible format controls survive control filtering · case 03
Invisible format controls survive control filtering.
Case contract
Remove Unicode categories Cc and Cf; preserve spacing and private-use characters.
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 | "a\u200bb" | "ab" | Failed |
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