yaml_emitter_append_tag_directive  575 ext/psych/yaml/emitter.c             if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 0))
yaml_emitter_append_tag_directive  581 ext/psych/yaml/emitter.c             if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 1))