[issue2834] re.IGNORECASE not Unicode-ready

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

This new patch adds re.ASCII in all sensitive places I could find in the
stdlib (except lib2to3 which as far as I understand is maintained in a
separate branch, and even has its own copy of tokenize.py...).

Also, I didn't get an answer to the following question on the ML: should
an inline flag "(?a)" be introduced to mirror the existing "(?u)" - so
as to set the ASCII flag from inside a pattern string.

Added file: http://bugs.python.org/file10819/reunicode4.patch

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