[Python-3000] raw strings and \u

[Benjamin Peterson]

On Sat, Apr 5, 2008 at 9:58 AM, Guido van Rossum <guido at python.org> wrote:

> Thanks -- that was quick!

Well, I was the guilty party...

>
>
> On Sat, Apr 5, 2008 at 7:50 AM, Benjamin Peterson
> <musiccomposition at gmail.com> wrote:
> >
> >
> >
> >
> > On Sat, Apr 5, 2008 at 9:44 AM, Guido van Rossum <guido at python.org>
> wrote:
> > >
> > > On Fri, Apr 4, 2008 at 11:18 PM, Neal Norwitz <nnorwitz at gmail.com>
> wrote:
> > > > I just checked in r62163 with this change:
> > > >  -            rc = os.system(r"ml64 -c -Foms\uptable.obj
> > ms\uptable.asm")
> > > >  +            rc = os.system("ml64 -c -Foms\\uptable.obj
> > ms\\uptable.asm")
> > > >
> > > >  What should happen with raw unicode strings that contain a \u?  The
> > > >  old code above was generating:
> > > >   SyntaxError: (unicode error) truncated \uXXXX
> > > >
> > > >  Is that correct?  Or should the \u be translated literally?
> > >
> > > Oops, there's a regression!!!
> > >
> > > In 2.x, \uDDDD and \UDDDDDDDD are interpreted as Unicode escapes in
> > > raw Unicode strings. That was a mistake, but we can't fix it (except
> > > when using "from __future__ import unicode_literals"). In 3.0, \u or
> > > \U in a raw string should have no special meaning -- it's just a
> > > backslash followed by 'u' or 'U'.
> > >
> > > This was fixed in 3.0a3. It seems to have reverted to the old (2.x)
> > > behavior in 3.0a4.
> > >
> > > THIS MUST BE FIXED!
> > Done in r62165.
> > >
> > >
> > > --
> > >
> > > --Guido van Rossum (home page: http://www.python.org/~guido/<http://www.python.org/%7Eguido/>
> )
> > >
> > >
> > >
> > >
> > > _______________________________________________
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> > > Python-3000 at python.org
> > > http://mail.python.org/mailman/listinfo/python-3000
> > >
> > > Unsubscribe:
> >
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> > >
> >
> >
> >
> > --
> > Cheers,
> > Benjamin Peterson
>
>
>
> --
> --Guido van Rossum (home page: http://www.python.org/~guido/<http://www.python.org/%7Eguido/>
> )
>



-- 
Cheers,
Benjamin Peterson
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