I find it particularly annoying that Emacs shell buffers do not offer satisfactory completions, but xterm does. I even used ansi-term for a while because of this (oh god). What I really wanted was for Emacs to show completions via auto-complete.el, like every other mode I use often. This package hopes to deliver on that promise.

Installation and more info: see .el file.

Pics to show off:

Auto fill in what you were probably going to type:

Tab from there, and show the files in that dir:

Readline completion is pretty smart: let us try to build emacs...

SSH completion of hosts:

Completion seems to work on this host...

Ruby completion inside REPL: