'GETINFO config-file' command on ControlPort returns the standard torrc file when it was overridden in the command line
GETINFO config-file 250-config-file=/usr/local/etc/tor/torrc
When command line begins with: --ignore-missing-torrc -f /no/file
Tor v0.2.6.6 (git-bb8c4e69ca5c8bca) running on FreeBSD with Libevent 2.0.22-stable, OpenSSL 1.0.2a and Zlib 1.2.8.