FA-3133 / Regular expressions / Member archive
An absent optional group is conflated with an empty group · case 03
An absent optional group is conflated with an empty group.
Case contract
Parse a name optionally followed by = and any value; distinguish missing value as None.
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", ""] | ["a", null] | Failed |
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