PCMK__ENV_TRACE_TAGS  646 lib/common/logging.c         trace_tags = pcmk__env_option(PCMK__ENV_TRACE_TAGS);
PCMK__ENV_TRACE_TAGS  720 lib/common/logging.c              pcmk__env_option(PCMK__ENV_TRACE_TAGS));
PCMK__ENV_TRACE_TAGS  732 lib/common/logging.c             || (pcmk__env_option(PCMK__ENV_TRACE_TAGS) != NULL);