[issue9200] str.isprintable() is always False for large code points

[Alexander Belopolsky]

Alexander Belopolsky <belopolsky at users.sourceforge.net> added the comment:

Attached patch fixes isprintable and other ctype-like methods.  I left isspace() out for now because I could not find a test character outside of BMP to test with, but I think we should fix that for completeness as well.

At this point the goal is mostly to showcase Py_UNICODE_NEXT(), not completeness.  See issue10542.

I also noticed that upper/lower/swapcase methods have the same issue:

>>> '\N{MATHEMATICAL BOLD CAPITAL A}'.lower() == '\N{MATHEMATICAL BOLD CAPITAL A}'
True

This will be a subject of a separate issue.

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Added file: http://bugs.python.org/file19831/issue9200.diff

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