mathiasbynens/dotfiles — pull request #248 by gregstallings (2013-09-14 06:16:29+00:00)
Title: . with no arguments traverses up directory, otherwise acts as `.`

Another keystroke saver. `.` normally as a dual-purpose function now. Given its similarity to `..` and `...` and `....`, I shortcut just `.` with no arguments to act as `cd ..`. This should not affect anyone's normal workflow but just add extra functionality to `.` and save at least one keystroke.