poudriere options: -c flag explanation

[abi]

Hello,

Assuming that -n flag suggests that options run recursivly for deps 
chain, isn't  -c flag should always invoke dialog4ports for every port 
with options ?

For example, poudriere options -c editors/libreoffice asks for options 
through all dep chain if runs the first time, on subsequent run it asks 
for options only for original port or if it find no cached options.

This looks confusing, is it intended?