Invsibility Plugin and alias

I have 2 questions i would love to have answered if anyone can.

First off, is their any plugin that once someone enters combat/pvp it will remove their invisibility potion if they have one on? Ive looked at combatlog but its outdated and doesnt work and im currently using combattag.

Second off, is their anyway to make a alias so when a player types /f who it runs the command /f f.
I need this because im using the newest version of factions and alot of people are used to the old commands so it would help alot of players out if i had both commands available to be used.

Thanks in advance for any help!