New submission from Owen <owentrigue...@gmail.com>:
"\W" regex pattern, when used with `re.ASCII`, is expected to have the same
behavior as "[^a-zA-Z0-9_]" (see [1]).
For example, the following `sub()` call
```
>>> re.sub('\W', '', '½ a', re.ASCII)
'½a'
```
should return the same as this one:
```
>>> re.sub('[^a-zA-Z0-9_]', '', '½ a', re.ASCII)
'a'
```
But it does not.
[1] https://docs.python.org/3/library/re.html#regular-expression-syntax
----------
components: Regular Expressions
messages: 403810
nosy: ezio.melotti, mrabarnett, owentrigueros
priority: normal
severity: normal
status: open
title: "\W" pattern with re.ASCII flag is not equivalent to "[^a-zA-Z0-9_]"
type: behavior
versions: Python 3.10, Python 3.6, Python 3.7, Python 3.8, Python 3.9
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue45458>
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