The following error message is thrown when attempting to start the MySQL client.
mysql: [ERROR] Found option without preceding group in config file /usr/local/etc/my.cnf at line 1!
mysql: [ERROR] Fatal error in defaults handling. Program aborted!
The error is due to a UTF-8 character at the beginning of the file.
Open my.cnf with Vim and issue the following normal mode command
:set nobomb
:w