Method variable

src/engine/variable.h:41–42

    struct variable
    {
        inline variable(const variable &v)
            : var_module(v.var_module), var_symbol(object_copy(v.var_symbol)) {}
        inline variable(struct module_t *m, const char *v)
            : var_module(m), var_symbol(object_new(v)) {}
        inline variable(const char *m, const char *v)