Setting log-basename in my.cnf will ignore pid-file and log-error settings

Simply by adding "log-basename = master" to a my.cnf file, the definitions for pid-file and log-error are ignored.

This may include other settings as well but I cannot confirm that.

How to repeat:

pid-file=/var/run/mysqld/mysqld.pid

log-error=/var/log/mysql/mysqld.err

log-basename = master

Expected results:
/var/run/mysqld/mysqld.pid and /var/log/mysql/mysqld.err to be written to.

Actual results:
$DATADIR/master.pid and $DATADIR/master.err are created and written to