[issue12568] Add functions to get the width in columns of a character

[Martin v. Löwis]

Martin v. Löwis <martin at v.loewis.de> added the comment:

In the #2382 code, how is the Windows case supposed to work? Also, what about systems that don't have wcswidth? IOW, the patch appears to be incorrect.

I like the #6755 approach better, except that it shouldn't be using hard-coded tables, but instead integrate with Python's version of the UCD. In addition, it should use an accepted, published strategy for determining the width, preferably coming from the Unicode consortium.

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nosy: +loewis

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