"Failed to run config for headlines.nvim", and unable to see any highlight using default config

[hopezh]

I got the following error after installing headlines.nvim:

Failed to run `config` for headlines.nvim

...9cf3b/share/nvim/runtime/lua/vim/treesitter/language.lua:99: no parser for 'norg' language, see :help treesitter-parsers

# stacktrace:
  - /opt/homebrew/Cellar/neovim/HEAD-e59cf3b/share/nvim/runtime/lua/vim/treesitter/language.lua:99 _in_ **add**
  - /opt/homebrew/Cellar/neovim/HEAD-e59cf3b/share/nvim/runtime/lua/vim/treesitter/query.lua:252 _in_ **parse**
  - lua/plugins/headlines.lua:84 _in_ **config**
  - lua/config/lazy.lua:17
  - init.lua:2

I'm unable to get any highlight for a simple test.md file:

I'm using lazy.nvim to install headlines.nvim. My config file headlines.lua is the default one, and it's put in the lua/plugins folder of a lazynvim installation:

return {
    "lukas-reineke/headlines.nvim",

    dependencies = {
        "nvim-treesitter/nvim-treesitter",
    },

    -- config = true,

    config = function()
        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({
            markdown = {
                query = vim.treesitter.query.parse(
                    "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 = { "Headline1", "Headline2" },
                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.query.parse(
                    "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.query.parse(
                    "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.query.parse(
                    "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 = "🬂",
            },
        })
    end,
}

[chrisgrieser]

no parser for 'norg' language, see :help treesitter-parsers

do you have treesitter and the norg parser installed?

[hopezh]

Yes, I solved the norg related issue by installing norg in treesitter. I also have markdown installed in treesitter, as shown below by running :TSModuleInfor in neovim:

However, I still can't get the highlight to work, as shown in the config file below, even after I changed the guibg color for all three headers and code block to red (#ff0000). It seems. only Headline3 is affected.

Did I specify the colors for headers and code block correctly in the config file?

My modifed lazyvim config with headlines.nvim installed is shown here.

headlines.lua in the lua/plugins folder:

 return {
    "lukas-reineke/headlines.nvim",
    ft = "markdown",
    event = "VeryLazy",
    lazy = false,
    dependencies = {
        "nvim-treesitter/nvim-treesitter",
    },

    config = function()
        require("headlines").setup({
            markdown = {
                query = vim.treesitter.query.parse(
                    "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 = {
                    "Headline1",
                    "Headline2",
                    "Headline3",
                },

                codeblock_highlight = "CodeBlock",
                dash_highlight = "Dash",
                dash_string = "-",
                quote_highlight = "Quote",
                quote_string = "┃",
                fat_headlines = true,
                -- fat_headline_upper_string = "▃",
                -- fat_headline_lower_string = "🬂",
                fat_headline_upper_string = "-",
                fat_headline_lower_string = "",
            },
        })

        vim.cmd([[highlight Headline1 guibg=#ff0000]])
        vim.cmd([[highlight Headline2 guibg=#ff0000]])
        vim.cmd([[highlight Headline3 guibg=#ff0000]])
        vim.cmd([[highlight CodeBlock guibg=#ff0000]])
        vim.cmd([[highlight Dash guibg=#ff0000 gui=bold]])
    end,
}

[hopezh]

Ok, allow me to reply to myself.

I think I managed to make headlines.nvim work, and for both .md and .qmd files, as shown in this post .

For normal markdown .md file:

For quarto .qmd file:

My updated /lua/plugins/headlines.lua config is shown here.

Note that the colors for headlines and code block are defined in the /lua/config/options.lua file, rather than inside the headlines.nvim file.