GETCONF responses must be quoted
The control spec says
264 Value may be a raw value or a quoted string. Tor will try to use
265 unquoted values except when the value could be misinterpreted through
266 not being quoted.
here https://gitweb.torproject.org/torspec.git/blob/master:/control-spec.txt#l264
GETCONF returns values which seperated by spaces without quoting them (this would be something that could be misinterpreted). Tor should respond with quoted values.
Ex:
getconf log
250 Log=notice stdout
should be
getconf log
250 Log="notice stdout"