overlength.nvim

overlength.nvim is a small plugin for Neovim to highlight the part of a line that doesn't fit into textwidth (or really, whatever width you like).

This plugin is inspired by the Vim plugin overlength.vim developed by TJ DeVries (@tjdevries). And it also uses some tips from "Vim Tips Wiki" article "Highlight long lines".

Installation

Neovim version >= 0.7.0 is necessary to use this plugin.

Install this plugin using your favorite plugin manager:

• with packer

use 'lcheylus/overlength.nvim'

• with lazy.nvim

{ 'lcheylus/overlength.nvim' }

To get started with the default configuration, add:

require('overlength').setup()

Configuration

While the defaults should work for most users out of the box, the following options can be configured as such:

require('overlength').setup({
   -- Overlength highlighting enabled by default
  enabled = true,
-- Colors for OverLength highlight group   colors = {     ctermfg = nil,     ctermbg = 'darkgrey',     fg = nil,     bg = '#8B0000',   }
-- Mode to use textwidth local options   -- 0: Don't use textwidth at all, always use config.default_overlength.   -- 1: Use textwidth, unless it's 0, then use config.default_overlength.   -- 2: Always use textwidth. There will be no highlighting where   --    textwidth == 0, unless added explicitly   textwidth_mode = 2,   -- Default overlength with no filetype   default_overlength = 80,   -- How many spaces past your overlength to start highlighting   grace_length = 1,   -- Highlight only the column or until the end of the line   highlighttoeol = true,

-- List of filetypes to disable overlength highlighting   disable_ft = { &#39;qf&#39;, &#39;help&#39;, &#39;man&#39;, &#39;checkhealth&#39;, &#39;lazy&#39;, &#39;packer&#39;, &#39;NvimTree&#39;, &#39;Telescope&#39;, &#39;TelescopePrompt&#39;, &#39;TelescopeResults&#39;, &#39;WhichKey&#39; }, })</code></pre>
You could change the colors used to highlight too long lines:
<pre><code class="lang-lua">require(&#39;overlength&#39;).setup({ colors = { bg=&#39;#592929&#39; } })</code></pre>
Usage
The plugin creates 3 user-commands: 
OverlengthEnable : enable highlights for too long lines
 
OverlengthDisable : disable highlights for too long lines
 
OverlengthToggle : turn on/off highlights for too long lines
 
 You can change overlength used for a specific filetype with set_overlength function:

<pre><code class="lang-lua">:lua require(&#39;overlength&#39;).set_overlength(python, 100)</code></pre>
If you want disable overlength highlight for a specific filetype, set overlength to 0 (or add it to disable_ft` option in setup):
:lua require('overlength').set_overlength(markdown, 0)