8d455809b0
The semantics mimic other languages like Python, Java, JS, etc. To advance past a zero-length match, the search algorithm first tries to find a non-zero alternative branch. If that fails, it force-advances by 1 character. Fixes: #13790, #13792, #18690, #26629
11 lines
295 B
ReStructuredText
11 lines
295 B
ReStructuredText
regex-fixes
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* Regular expressions match the ``^`` anchor at most once in repeated
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searches, at the start of the input. See policy :policy:`CMP0186`.
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* References to unmatched groups are allowed, they are replaced with empty
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strings.
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* Zero-length matches are always allowed.
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