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> I don't really consider this a bug (obviously) but hopefully Lua 5.2.1
> can include this.

Note that the syntax in Lua 5.2 changed; now a 'break' does not need to
be the last statement in a block. So, there is no "optional semicolon"
after the break, but an empty statement. All the following examples are
valid now:

  for i = 1, 2 do if true then break;;; end end
  for i = 1, 2 do if true then break  a = 3 end end
  for i = 1, 2 do if true then break;  a = 3 end end
  for i = 1, 2 do if true then break;  ::label:: ; end end

Some of those cases need the extra JMP, some do not. Some people may
consider that "break;" is a common case to deserve a special treatment,
but it would be better to handle the general case.

-- Roberto