I forgot one vital part!

You can also now LIGHT <herb>, which will always try to find an herb in
a pipe before an herb in your inventory. Namely, if you have a piece of
faeleaf in your inventory and faeleaf in your pipe, LIGHT FAELEAF will
always default to your pipe.

Enjoy!

Penned by My hand on the 7th of Urlachmar, in the year 182 CE.