Python: Improve Regex flag parsing #15345
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Similar to #15244, except for the Python Regex module
Fixes:
anot being recognized-) not being recognized:as literalAny feedback is appreciated! Especially if I overlooked or failed to consider something, because I am not very familiar with the Python Regex library.
Without these changes parsing of inline flags fails for
aand-and erroneously treats the remaining characters incorrectly, e.g. matching them literally. See the added code examples inregex/test.pyfor which parsing fails without these changes.