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emacs: add README (#7235)

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Martin Nestorov 2018-10-05 21:43:04 +03:00 committed by Marc Cornellà
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# Emacs plugin
This plugin utilizes the Emacs daemon capability, allowing the user to quickly open frames, whether they are opened in a terminal via a ssh connection, or X frames opened on the same host. The plugin also provides some aliases for such operations.
- You don't have the cost of starting Emacs all the time anymore
- Opening a file is as fast as Emacs does not have anything else to do.
- You can share opened buffered across opened frames.
- Configuration changes made at runtime are applied to all frames.
**NOTE:** requires Emacs 24 and newer.
To use it, add emacs to the plugins array in your zshrc file:
```zsh
plugins=(... emacs)
```
## Aliases
The plugin uses a custom launcher (which we'll call here `$EMACS_LAUNCHER`) that is just a wrapper around [`emacsclient`](https://www.emacswiki.org/emacs/EmacsClient).
| Alias | Command | Description |
|--------|----------------------------------------------------|----------------------------------------------------------------|
| emacs | `$EMACS_LAUNCHER --no-wait` | Opens a temporary emacsclient frame |
| e | `emacs` | Same as emacs alias |
| te | `$EMACS_LAUNCHER -nw` | Open terminal emacsclient |
| eeval | `$EMACS_LAUNCHER --eval` | Same as `M-x eval` but from outside Emacs |
| eframe | `emacsclient --alternate-editor "" --create-frame` | Create new X frame |
| efile | - | Print the path to the file open in the current buffer |
| ecd | - | Print the directory of the file open in the the current buffer |