Re: [rfc] unicode escapes for extended strings

On Wed, 2009-09-09 at 18:26 +0300, Marko Kreen wrote:
> Unicode escapes for extended strings.
> 
> On 4/16/09, Marko Kreen <markokr@gmail.com> wrote:
> > Reasons:
> >
> >  - More people are familiar with \u escaping, as it's standard
> >   in Java/C#/Python, probably more..
> >  - U& strings will not work when stdstr=off.
> >
> >  Syntax:
> >
> >   \uXXXX      - 16-bit value
> >   \UXXXXXXXX  - 32-bit value
> >
> >  Additionally, both \u and \U can be used to specify UTF-16 surrogate
> >  pairs to encode characters with value > 0xFFFF.  This is exact behaviour
> >  used by Java/C#/Python.  (except that Java does not have \U)
> 
> v3 of the patch:
> 
>     - convert to new reentrant lexer API
>     - add lexer targets to avoid fallback to default
>     - completely disallow \U\u without proper number of hex values
>     - fix logic bug in surrogate pair handling

Committed.