STINNER Victor <[email protected]> added the comment:
> Martin: I agree that there are going to be cases where it is not
> correct because the terminal does something strange, but what we
> need is something that gets as close as possible to what the
> terminal is likely to be doing
Can't we expose wcswidth() as locale.strwidth() with a recipe explaining how to
use unicodedata to get a "correct" result? At least until everyone implements
correctly Unicode and Unicode stops evolving? :-)
--
For unicodedata, a function to get the width of a string would be more
convinient than unicodedata.east_asian_width():
>>> import unicodedata
>>> unicodedata.east_asian_width('abc')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: need a single Unicode character as parameter
>>> 'abc'.ljust(unicodedata.east_asian_width(' '))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'str' object cannot be interpreted as an integer
The function posted in msg155361 looks like east_asian_width() is not enough to
get the width in columns of a single character.
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<http://bugs.python.org/issue12568>
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