I have just pulled you PR for this directories.lua overload, compiled and it works great !
Then I tried also to pull your PR for generic format of the line with nil
but that still doesn't work (but admitably I perhaps did something wrong as it is in the subproject luajit-launcher ... I pulled it there to a new branch, then checked it out .. nor sure if this is a right way
I will wait until it gets commited into the master and then try again, I am pretty new with git (:-(