econv_primitive_convert 3859 transcode.c        ret = econv_primitive_convert(ac, av, self);
econv_primitive_convert 3907 transcode.c        ret = econv_primitive_convert(ac, av, self);
econv_primitive_convert 4466 transcode.c        rb_define_method(rb_cEncodingConverter, "primitive_convert", econv_primitive_convert, -1);