bug#71070: 30.0.50; c++-ts-mode namespace wrong fontification.

[Ergus]

On Sun, May 19, 2024 at 09:36:07PM GMT, Eli Zaretskii wrote:
> > Date: Sun, 19 May 2024 20:14:19 +0200
> > From:  Ergus via "Bug reports for GNU Emacs,
> >  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> >
> >
> > Following up the conversation in the develops mailing list I will report
> > this issue still happening:
> >
> > In c++-ts-mode, the namespaces are not fontified like in c++-mode
> >
> > (i.e in std::string the `std` used to have font-lock-constant-face while
> > `string` used to have font-lock-type-face).
>
> Why do you think std should be in font-lock-constant-face?  The name
> of a namespace is not a constant, it's an identifier.

Hi Eli:

That's how namespaces are fontified in the c++-mode. Not telling it is
correct, wrong or if needs improvement; just that c++-ts-mode is not
doing in the same way.

Try this:

```main.cpp

const std::string a;

class myclass {
        std::time::timespec var;
};

int main()
{
        std::string b = 1;

        
}
```

and then M-x c++-ts-mode you will see the difference.