[issue17087] Improve the repr for regular expression match objects

[Claudiu.Popa]

Claudiu.Popa added the comment:

Added the new patch, which addresses Serhiy's comments.
Also, this approach fails when bytes are involved:

>>> import re
>>> re.search(b"a", b"a")
Assertion failed: (PyUnicode_Check(op)), function _PyUnicode_CheckConsistency, file Objects/unicodeobject.c, line 309.

Should a check be added for this also?

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Added file: http://bugs.python.org/file32143/sre_repr4.patch

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