Re: 5.2 feature list?

[John Hind <john.hind@...>]

The main thing I do not like is "global-by-default" and there seems to 
be a fair bit of support for that. Compatibility does not need to be a 
problem if the transition is thought through. New Lua hosts can adopt 
global-by-declaration, existing hosts upgrading Lua can switch it on or 
off. Individual chunks can reverse the implementation default with a 
directive at the start of each chunk.

However I do not really see why local-by-default is such a problem. In 
the Lua cant, it just means that if "x" cannot be resolved at any point 
in interpretation, "x = 1" gets treated as "syntactic sugar" for "local 
x; x = 1". Of course, if you want it to be in an outer scope, you have 
to pre-declare in that scope.