Re: [ANN] Lua 5.3.0 (work2) now available

[Andrew Starks <andrew.starks@...>]

I would be happy to try this. I'll upgrade to the latest and apply this change first thing tomorrow. 

On Sunday, March 23, 2014, Roberto Ierusalimschy <roberto@inf.puc-rio.br> wrote:
> > I'd like to suggest that the timing for changes to coercion is in this
> > release.
> >
> > You introduced int 64 and language support for bits, plus changes to number
> > formatting. 5.3 looks to be shaping up to be a "number" release.
> > Eliminating string->number fits this.
>
> I am afraid elimination of this conversion is a much deeper disruption
> than it seems; I would love to be proved wrong.
>
> I think it is really easy to disable this coercion in Lua; all it takes
> is a simple change in lvm.c (see below). It would be very helpful if
> people try that in the wild and report their experiences here in the
> list.
>
>
> Lua 5.1 and Lua 5.2:
> @@ -35,10 +35,6 @@
>  const TValue *luaV_tonumber (const TValue *obj, TValue *n) {
>    lua_Number num;
>    if (ttisnumber(obj)) return obj;
> -  if (ttisstring(obj) && luaO_str2d(svalue(obj), &num)) {
> -    setnvalue(n, num);
> -    return n;
> -  }
>    else
>      return NULL;
>  }
>
> Lua 5.3:
> @@ -44,7 +44,7 @@
>      return 1;
>    }
>    else
> -    return (ttisstring(obj) && luaO_str2d(svalue(obj), tsvalue(obj)->len, n));
> +    return 0;
>  }
>
>
> -- Roberto