Re: [ANN] Lua 5.2.0 (beta-rc1) now available

[Lorenzo Donati <lorenzodonatibz@...>]

On 14/06/2011 0.32, Roberto Ierusalimschy wrote:
> > If the start character must be something unused in Lua, there are
> > few alternatives among ASCII: #, $, |,&, ?, !, `.
>
> Actually it can be a new token, as Tony suggested. For instance, Ada
> uses the syntax<<label>>.
>
>
> > Probably the best bets are # and $, since the other may better serve
> > as operators in Lua 9.5 :-P :-)
>
> Should<<  and>>  be reserved for 9.5? :)
>
> -- Roberto
...
goto continue
...
<<continue>>

Well, much better than @continue: (the more I see that colon, the more I 
hate it. I really feel it doesn't belong there).

If colons have to be used, I think

::continue::

is much better and doesn't clash with future uses as operator (well, not 
counting the C++ static scope operator, or however it is called).

It is symmetric and bulky. It doesn't misleadingly point backwards or 
forwards. Clearly marks a point in the code and, well, it brings to mind 
a real label or price tag!