``` $ man apti<TAB> ``` correctly becomes ``` $ man aptitude aptitude aptitude-create-state-bundle aptitude-curses aptitude-run-state-bundle ``` However ``` $ mkdir /tmp/aptitude $ cd /tmp/ $ man apti<TAB> aptitude/ aptitude/ aptitude-create-state-bundle aptitude-curses aptitude-run-state-bundle ``` 1. Does not at least complete to "aptitude", but instead stays "apti". 2. Gives *two* "aptitude/"