The script to perform a branch filter updating an author doesn't actually run the command as there is a syntax error. At the moment it just prints out a valid git command which the user can then run manually.
Vim becomes almost unuseable with lag after an hour or so of extended use. Most lag is experienced when navigating in a window. Seems to be alleviated briefly when changing tabs or reloading .vimrc.
ifconfig returns a different string for the interface names. The command used to fetch the interfaces, ifconfig | grep '^[a-z]' | awk '{print $1}', looks like this: