Hello
I am +1 to have separate header with path names.
Another examples are:
- pg_ctl with many hardcoded files such as "promote" (PROMOTE_SIGNAL_FILE), "logrotate" (LOGROTATE_SIGNAL_FILE),
postgresql.conf,PG_VERSION, backup_label, postmaster.pid
- pg_basebackup with currently hardcoded "standby.signal" (STANDBY_SIGNAL_FILE) and "postgresql.auto.conf"
regards, Sergei