[Phanx]

I'd guess that's probably more related to the amount of code between the "if" and "elseif" for each locale. What happens if you do it this way instead:

if locale == A then
    -- stuff
return end

if locale == B then
    -- stuff
return end

Since it's only complaining after 142,112 lines, it should be able to handle multiple independent "control structures" of only 12,000 lines each.