Fix catastrophic backtracking in QUOTE_HEADERS_REGEX#34
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hyperair wants to merge 1 commit intot2bot:mainfrom
Open
Fix catastrophic backtracking in QUOTE_HEADERS_REGEX#34hyperair wants to merge 1 commit intot2bot:mainfrom
hyperair wants to merge 1 commit intot2bot:mainfrom
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QUOTE_HEADERS_REGEXsuffers from catastrophic backtracking as a result of the following patterns:.*something.*or.+something.+(Remote quantifiers can reach into each other's territory).*compounded by+(A Quantifier Compounds a Quantifier)This script demonstrates the issue with sample input: https://gist.github.com/hyperair/f5e11e2e347253ef36f7d9855c452f8e
This PR solves the first issue by dropping the unnecessary
.*from inside the negative lookahead of the first few regees, and solve the second issue by using a tempered greedy token