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

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

A "proof of concept" patch, which shows the macros used to walk a unicode string and uses them in unicode_repr() (should not change behaviour) and in unicode_isprintable() (should fix the issue).

Other functions should be changed the same way, of course.

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keywords: +patch
Added file: http://bugs.python.org/file17922/join-surrogates.patch

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