STINNER Victor <victor.stin...@haypocalc.com> added the comment:
> There might be something you can steal from ...
I don't think that Python should reinvent the wheel. We should just reuse
wcswidth().
Here is a simple patch exposing wcswidth() function as locale.width().
Example:
>>> import locale
>>> text = '\u3042\u3044\u3046\u3048\u304a'
>>> len(text)
5
>>> locale.width(text)
10
>>> locale.width(' ')
1
>>> locale.width('\U0010abcd')
1
>>> locale.width('\uDC80')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
locale.Error: the string is not printable
>>> locale.width('\U0010FFFF')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
locale.Error: the string is not printable
I don't think that we need locale.width() on Windows because its console has
already bigger issues with Unicode: see issue #1602. If you want to display
correctly non-ASCII characters on Windows, just avoid the Windows console and
use a graphical widget.
----------
keywords: +patch
Added file: http://bugs.python.org/file23401/locale_width.patch
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<http://bugs.python.org/issue12568>
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