## linum-relative.el
*display relative line number in emacs.*
---
[![License GPLv2](https://img.shields.io/badge/license-GPL_v2-green.svg)](http://www.gnu.org/licenses/gpl-2.0.html)
[![MELPA](http://melpa.org/packages/linum-relative-badge.svg)](http://melpa.org/#/linum-relative)
[![MELPA Stable](http://stable.melpa.org/packages/linum-relative-badge.svg)](http://stable.melpa.org/#/linum-relative)
![Screenshot](https://github.com/coldnew/linum-relative/raw/master/screenshot/screenshot1.jpg)
linum-relative lets you display relative line numbers for current buffer.
### Installation
If you have `melpa` and `emacs24` installed, simply type:
M-x package-install linum-relative
And add the following to your .emacs
(require 'linum-relative)
### Setup & Tips
The non-interactive function *linum-on* (which should already be built into recent GNU Emacs distributions), turns on side-bar line numbering:
(linum-on)
and alternatively, by using command:
M-x linum-relative-mode
Relative line numbering should already be enabled by default (by installing this package), following *linum-on* or enabling *linum-mode*. One can also use the *linum-relative-toggle* interactive function to switch between relative and non-relative line numbering:
M-x linum-relative-toggle
### Backends
By default, linum-relative use *linum-mode* as backend, since linum-mode is based on emacs-lisp, you may have performance issue on large file.
Since linum-relative 0.6, if you also use emacs version 26.1 or above, you can setup `linum-relative-backend` to make linum-relative-mode use `display-line-number-mode` as backend, which is implement in C so the performance is really nice.
However some linum-relative's customize function may not work propely.
Here's how to use `display-line-number-mode` as backend:
```elisp
;; Use `display-line-number-mode` as linum-mode's backend for smooth performance
(setq linum-relative-backend 'display-line-numbers-mode)
```
### Function Documentation
#### `(linum-relative-in-helm-p)`
Return non nil when in an helm session.
#### `(linum-relative-on)`
Turn ON linum-relative.
#### `(linum-relative-off)`
Turn OFF linum-relative.
#### `(linum-relative-toggle)`
Toggle between linum-relative and linum.
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