bug#4848: 23.1.50; \u and \x in string

[Jason Rumney]

Stefan Monnier wrote:

> > "\ue1" gives the error "Non-hex digit used for Unicode escape".
> > Why doesn't it work to give the Unicode character á?
> >     
>
> I think you mean \u00e1
>   

I think the error message means "Insufficient hex digits used for 
Unicode escape".

> > Note that \xe1 does not work for this any more.
> >     
>
> Indeed, this refers to the byte 225 rather than to the char 225.
>   
>
> \x00e1 also works like \u00e1.
>   

That is definitely confusing.