PCMK__ENV_TRACE_FILES  661 lib/common/logging.c         trace_files = pcmk__env_option(PCMK__ENV_TRACE_FILES);
PCMK__ENV_TRACE_FILES  731 lib/common/logging.c              crm_log_level, pcmk__env_option(PCMK__ENV_TRACE_FILES),
PCMK__ENV_TRACE_FILES  743 lib/common/logging.c             || (pcmk__env_option(PCMK__ENV_TRACE_FILES) != NULL)