Possible bug in “tonumber”:
If a variable contains already a number, the function “tonumber(variable)” throws an error “Lua error: attempt to perform arithmetic on a non-number”
Turns out, in fact it returns “nil” if the value is a number already.
you can reproduce it this way:
${tonumber(3)+4}
Is this intended?
Until at least in one of the few latest versions right before 2.1.7 this was no problem: tonumber(x) returned the value as number, even if it was a number already.
