yaml_write_handler_t 490 ext/psych/yaml/api.c yaml_write_handler_t *handler, void *data) yaml_write_handler_t 1547 ext/psych/yaml/yaml.h yaml_write_handler_t *write_handler; yaml_write_handler_t 1830 ext/psych/yaml/yaml.h yaml_write_handler_t *handler, void *data);