# smex contribution layer for Spacemacs
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**Table of Contents**
- [smex contribution layer for Spacemacs](#smex-contribution-layer-for-spacemacs)
- [Description](#description)
- [Install](#install)
- [Key bindings](#key-bindings)
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## Description
This layer replaces `helm-M-x` by [smex][] which is built on top of `ido`.
`ido` can perform flex matching with the [flx-ido][] mode which is already
activated in the Spacemacs layer.
## Install
To use this contribution add it to your `~/.spacemacs`
```elisp
(setq-default dotspacemacs-configuration-layers '(smex))
```
## Key bindings
Key Binding | Description
--------------------|------------------------------------------------------------
<kbd>SPC :</kbd> | all Emacs commands (interactive functions)
<kbd>SPC m :</kbd> | current major mode commands
[smex]: https://github.com/nonsequitur/smex
[flx-ido]: https://github.com/lewang/flx
