[issue13592] repr(regex) doesn't include actual regex

[Hugo Lopes Tavares]

Hugo Lopes Tavares <hltbra at gmail.com> added the comment:

Thanks for the review ezio.melotti.

He has notice a few things in my patch:
* assertEquals is deprecated; should use assertEqual
* the convention is assertEqual(result, expected), not assertEqual(expected, result)
* it should handle quotes correctly
* some lines were longer than 80 chars
* add tests using inline flags (re.I instead of re.IGNORECASE)

And I realized I was not covering the case where no flags are enabled (byte string, for instance). And I have fixed all this issues.

And now I think this patch would work against py2x and py3k anyway.

Attaching a new patch.

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Added file: http://bugs.python.org/file26453/issue13592_add_repr_to_regex_v2.patch

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