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3 Commits

Author SHA1 Message Date
Joe Farebrother
bb562643c6 Support possessive quantifiers, which cannot backtrack. 
They are approximated by limiting them to up to one repetition (effectively making *+ like ? and ++ like a no-op).
 2022-05-04 15:41:37 +01:00
Joe Farebrother
57ba8a4d1b Improve handling of hex escapes; and support some named character classes 2022-05-04 15:41:36 +01:00
Joe Farebrother
e23162d91b Add test cases for PolynomialRedos dataflow logic; make fixes 2022-05-04 15:41:35 +01:00