[Python-3000] raw strings and \u

[Benjamin Peterson]

On Sat, Apr 5, 2008 at 12:58 PM, Neal Norwitz <nnorwitz at gmail.com> wrote:

> On Sat, Apr 5, 2008 at 8:03 AM, Benjamin Peterson
> <musiccomposition at gmail.com> wrote:
> > On Sat, Apr 5, 2008 at 10:00 AM, Guido van Rossum <guido at python.org>
> wrote:
> > > :-)
> > >
> > > So did the broken version make it into the 3.0a4 release, or did you
> > > break it after the release?
> > >
> > Missed it by 7 revisions! I'm going to add a test for that, though, so
> it
> > doesn't happen again.
>
> Are there more tests for raw strings that should be added?  When I
> looked in the C code it looked there were were several things going on
> IIRC.  It seems we ought to have a fairly comprehensive set of tests
> for raw strings (among other things) to verify we always do the right
> thing in the future.

I think we do. Maybe I'm missing some in other files, but I only see a
couple tests with raw strings in test_unicode.

>
>
> Thanks,
> n
>
> >
> >
> > >
> > >
> > > On Sat, Apr 5, 2008 at 7:59 AM, Benjamin Peterson
> > >
> > >
> > >
> > > <musiccomposition at gmail.com> wrote:
> > > >
> > > >
> > > > 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/>
> )
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > _______________________________________________
> > > > > > > Python-3000 mailing list
> > > > > > > Python-3000 at python.org
> > > > > > > http://mail.python.org/mailman/listinfo/python-3000
> > > > > > >
> > > > > > > Unsubscribe:
> > > > > >
> > > >
> >
> http://mail.python.org/mailman/options/python-3000/musiccomposition%40gmail.com
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Cheers,
> > > > > > Benjamin Peterson
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > >
> > > > >
> > > > >
> > > > > --Guido van Rossum (home page: http://www.python.org/~guido/<http://www.python.org/%7Eguido/>
> )
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Cheers,
> > > > Benjamin Peterson
> > >
> > >
> > >
> > > --
> > >
> > >
> > >
> > > --Guido van Rossum (home page: http://www.python.org/~guido/<http://www.python.org/%7Eguido/>
> )
> > >
> >
> >
> >
> > --
> > Cheers,
> > Benjamin Peterson
>



-- 
Cheers,
Benjamin Peterson
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