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Re: Pyton re module and POSIX equivalence classes

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  Re: Pyton re module and POSIX equivalence classes Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-06-01 23:48 +0100

#91729 — Re: Pyton re module and POSIX equivalence classes

On 01/06/2015 21:29, Tim Chase wrote:
> Is Python supposed to support POSIX "equivalence classes"?  I tried
> the following in Py2 and Py3:
>
>    >>> re.sub('[[=a=]]', 'A', 'aáàãâä', re.U)
>    'aáàãâä'
>
> which suggests that it doesn't (I would have expected "AAAAAA" as the
> result).
>
> Is there a way to get this behavior?
>
> I found that perl knows about them but treats them as an exception
> for now[1].  Supposedly GNU awk (and other GNU POSIXish tools)
> recognize character classes, as does vim.
>
> Thanks,
>
> -tkc
>
> [1]
> http://perldoc.perl.org/perlrecharclass.html
>

I wouldn't know directly as I tend to avoid them like the plague, but if 
not are they in the "new" regex module, see 
https://pypi.python.org/pypi/regex/2015.05.28 and/or 
http://bugs.python.org/issue2636 ???

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence

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