Headlines.nvim

This plugin adds highlights for text filetypes, like markdown, orgmode, and neorg.

1. Background highlighting for headlines
2. Background highlighting for code blocks
3. Whole window separator for horizontal line
4. Bar for Quotes

Treesitter grammar needs to be installed for the languages.

Install

Use your favourite plugin manager to install.

Example with Packer

wbthomason/packer.nvim

-- init.lua
require("packer").startup(
    function()
        use {
            'lukas-reineke/headlines.nvim',
            after = 'nvim-treesitter',
            config = function()
                require('headlines').setup()
            end,
        }
    end
)

Example with Plug

junegunn/vim-plug

" init.vim
call plug#begin('~/.vim/plugged')
Plug 'lukas-reineke/headlines.nvim'
call plug#end()

lua << EOF
require("headlines").setup()
EOF

Example with Lazy

folke/lazy.nvim

-- init.lua
require('lazy').setup({
    {
        'lukas-reineke/headlines.nvim',
        dependencies = "nvim-treesitter/nvim-treesitter",
        config = true, -- or `opts = {}`
    }
})

Setup

To configure headlines.nvim pass a config table into the setup function.

Default config:

require("headlines").setup {
    markdown = {
        query = vim.treesitter.parse_query(
            "markdown",
            [[
                (atx_heading [
                    (atx_h1_marker)
                    (atx_h2_marker)
                    (atx_h3_marker)
                    (atx_h4_marker)
                    (atx_h5_marker)
                    (atx_h6_marker)
                ] @headline)

                (thematic_break) @dash

                (fenced_code_block) @codeblock

                (block_quote_marker) @quote
                (block_quote (paragraph (inline (block_continuation) @quote)))
            ]]
        ),
        headline_highlights = { "Headline" },
        codeblock_highlight = "CodeBlock",
        dash_highlight = "Dash",
        dash_string = "-",
        quote_highlight = "Quote",
        quote_string = "┃",
        fat_headlines = true,
        fat_headline_upper_string = "▃",
        fat_headline_lower_string = "🬂",
    },
    rmd = {
        query = vim.treesitter.parse_query(
            "markdown",
            [[
                (atx_heading [
                    (atx_h1_marker)
                    (atx_h2_marker)
                    (atx_h3_marker)
                    (atx_h4_marker)
                    (atx_h5_marker)
                    (atx_h6_marker)
                ] @headline)

                (thematic_break) @dash

                (fenced_code_block) @codeblock

                (block_quote_marker) @quote
                (block_quote (paragraph (inline (block_continuation) @quote)))
            ]]
        ),
        treesitter_language = "markdown",
        headline_highlights = { "Headline" },
        codeblock_highlight = "CodeBlock",
        dash_highlight = "Dash",
        dash_string = "-",
        quote_highlight = "Quote",
        quote_string = "┃",
        fat_headlines = true,
        fat_headline_upper_string = "▃",
        fat_headline_lower_string = "🬂",
    },
    norg = {
        query = vim.treesitter.parse_query(
            "norg",
            [[
                [
                    (heading1_prefix)
                    (heading2_prefix)
                    (heading3_prefix)
                    (heading4_prefix)
                    (heading5_prefix)
                    (heading6_prefix)
                ] @headline

                (weak_paragraph_delimiter) @dash
                (strong_paragraph_delimiter) @doubledash

                ((ranged_tag
                    name: (tag_name) @_name
                    (#eq? @_name "code")
                ) @codeblock (#offset! @codeblock 0 0 1 0))

                (quote1_prefix) @quote
            ]]
        ),
        headline_highlights = { "Headline" },
        codeblock_highlight = "CodeBlock",
        dash_highlight = "Dash",
        dash_string = "-",
        doubledash_highlight = "DoubleDash",
        doubledash_string = "=",
        quote_highlight = "Quote",
        quote_string = "┃",
        fat_headlines = true,
        fat_headline_upper_string = "▃",
        fat_headline_lower_string = "🬂",
    },
    org = {
        query = vim.treesitter.parse_query(
            "org",
            [[
                (headline (stars) @headline)

                (
                    (expr) @dash
                    (#match? @dash "^-----+$")
                )

                (block
                    name: (expr) @_name
                    (#eq? @_name "SRC")
                ) @codeblock

                (paragraph . (expr) @quote
                    (#eq? @quote ">")
                )
            ]]
        ),
        headline_highlights = { "Headline" },
        codeblock_highlight = "CodeBlock",
        dash_highlight = "Dash",
        dash_string = "-",
        quote_highlight = "Quote",
        quote_string = "┃",
        fat_headlines = true,
        fat_headline_upper_string = "▃",
        fat_headline_lower_string = "🬂",
    },
}

To change any setting, pass a table with that option. Or add a completely new filetype. You can turn off highlighting by removing that part from the query, or setting highlight to false.

require("headlines").setup {
    markdown = {
        headline_highlights = false,
    },
    yaml = {
        query = vim.treesitter.parse_query(
            "yaml",
            [[
                (
                    (comment) @dash
                    (#match? @dash "^# ---+$")
                )
            ]]
        ),
        dash_highlight = "Dash",
    }
}

Please see :help headlines.txt for more details.

Screenshots

All screenshots use my custom onedark color scheme.

Simple org file

vim.cmd [[highlight Headline1 guibg=#1e2718]]
vim.cmd [[highlight Headline2 guibg=#21262d]]
vim.cmd [[highlight CodeBlock guibg=#1c1c1c]]
vim.cmd [[highlight Dash guibg=#D19A66 gui=bold]]

require("headlines").setup {
    org = {
        headline_highlights = { "Headline1", "Headline2" },
    },
}