Re: [ANN] Lua 5.3.0 (work2) now available (number coercion holy crusade)

[Luiz Henrique de Figueiredo <lhf@...>]

> The API and VM instructions, like print(), invoke__tostring() automatically.

The core and the API do not call __tostring at all.
print calls tostring which in turn calls __tostring.
The libraries may call __tostring via luaL_tolstring.

Bottom line: __tostring is a non-core metamethod.