Another incredibly useful package is mcomplete.el, which performs parital or fuzzy completion based on prefix and substring matching, with hints. It’s basically a run-time apropos command that runs in the minibuffer and really helps when you can’t quite remember what command or buffer you wanted and could use a few suggestions. It’s a bit hard to describe how it helps, but once I started using it, I think I would find it very hard to go back. Put the following into your ~/.emacs after downloading mcomplete.el to ~/.elisp: