[5.7] Implement atomic non-capturing groups #523
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This will let us fix lookahead assertions that have leftover save points in the subpattern on success, and also allow us to implement atomic groups.
On success, the subpatterns in lookaheads like (?=.*e) had a save point that persisted, causing the logic in the lookahead group to be invalid.
In addition to the (?>...) syntax, this is what's underneath `Local`.
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@swift-ci please test |
stephentyrone
approved these changes
Jun 29, 2022
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5.7 cherry-pick of #488
This allows writing atomic non-capturing groups in regex syntax and implements
Localcomponents in the builder syntax.Also fixes rdar://94738096