econv_primitive_convert 3524 transcode.c        ret = econv_primitive_convert(ac, av, self);
econv_primitive_convert 3572 transcode.c        ret = econv_primitive_convert(ac, av, self);
econv_primitive_convert 4094 transcode.c        rb_define_method(rb_cEncodingConverter, "primitive_convert", econv_primitive_convert, -1);