[Python-3000] raw strings and \u

[Guido van Rossum]

Thanks -- that was quick!

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/)
> >
> >
> >
> >
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> >
>
>
>
> --
> Cheers,
> Benjamin Peterson



-- 
--Guido van Rossum (home page: http://www.python.org/~guido/)