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## 12 `Hippie' Expansion

`M-x hippie-expand` is a single command providing a variety of completions and expansions. Called repeatedly, it tries all possible completions in succession.

Which ones to try, and in which order, is determined by the contents of the customizable option `hippie-expand-try-functions-list`. Much customization of the expansion behavior can be made by changing the order of, removing, or inserting new functions in this list. Given a positive numeric argument, `M-x hippie-expand` jumps directly that number of functions forward in this list. Given some other argument (a negative argument or just `C-u`) it undoes the tried completion.

See the commentary in `hippie-exp.el` for more information on the possibilities.

Typically you would bind `hippie-expand` to `M-/` with `dabbrev-expand`, the standard binding of `M-/`, providing one of the expansion possibilities.