Indent Blankline

This plugin adds indentation guides to Neovim. It uses Neovim's virtual text feature and no conceal

To start using indent-blankline, call the ibl.setup() function.

This plugin requires the latest stable version of Neovim.

Install

Use your favorite plugin manager to install.

For lazy.nvim:

{
    "lukas-reineke/indent-blankline.nvim",
    main = "ibl",
    ---@module "ibl"
    ---@type ibl.config
    opts = {},
}

For pckr.nvim:

use "lukas-reineke/indent-blankline.nvim"

Setup

To initialize and configure indent-blankline, run the setup function.

require("ibl").setup()

Optionally, you can pass a configuration table to the setup function. For all available options, take a look at :help ibl.config.

Screenshots

Simple

require("ibl").setup()

Scope

Scope requires treesitter to be set up.

require("ibl").setup()

The scope is not the current indentation level! Instead, it is the indentation level where variables or functions are accessible, as in Wikipedia Scope (Computer Science). This depends on the language you are writing. For more information, see :help ibl.config.scope.

The start and end of scope uses underline, so to achieve the best result you might need to tweak the underline position. In Kitty terminal for example you can do that with modify_font

Mixed indentation

require("ibl").setup()

Multiple indent colors

local highlight = {
    "RainbowRed",
    "RainbowYellow",
    "RainbowBlue",
    "RainbowOrange",
    "RainbowGreen",
    "RainbowViolet",
    "RainbowCyan",
}

local hooks = require "ibl.hooks"
-- create the highlight groups in the highlight setup hook, so they are reset
-- every time the colorscheme changes
hooks.register(hooks.type.HIGHLIGHT_SETUP, function()
    vim.api.nvim_set_hl(0, "RainbowRed", { fg = "#E06C75" })
    vim.api.nvim_set_hl(0, "RainbowYellow", { fg = "#E5C07B" })
    vim.api.nvim_set_hl(0, "RainbowBlue", { fg = "#61AFEF" })
    vim.api.nvim_set_hl(0, "RainbowOrange", { fg = "#D19A66" })
    vim.api.nvim_set_hl(0, "RainbowGreen", { fg = "#98C379" })
    vim.api.nvim_set_hl(0, "RainbowViolet", { fg = "#C678DD" })
    vim.api.nvim_set_hl(0, "RainbowCyan", { fg = "#56B6C2" })
end)

require("ibl").setup { indent = { highlight = highlight } }

Background color indentation guides

local highlight = {
    "CursorColumn",
    "Whitespace",
}
require("ibl").setup {
    indent = { highlight = highlight, char = "" },
    whitespace = {
        highlight = highlight,
        remove_blankline_trail = false,
    },
    scope = { enabled = false },
}

rainbow-delimiters.nvim integration

rainbow-delimiters.nvim

local highlight = {
    "RainbowRed",
    "RainbowYellow",
    "RainbowBlue",
    "RainbowOrange",
    "RainbowGreen",
    "RainbowViolet",
    "RainbowCyan",
}
local hooks = require "ibl.hooks"
-- create the highlight groups in the highlight setup hook, so they are reset
-- every time the colorscheme changes
hooks.register(hooks.type.HIGHLIGHT_SETUP, function()
    vim.api.nvim_set_hl(0, "RainbowRed", { fg = "#E06C75" })
    vim.api.nvim_set_hl(0, "RainbowYellow", { fg = "#E5C07B" })
    vim.api.nvim_set_hl(0, "RainbowBlue", { fg = "#61AFEF" })
    vim.api.nvim_set_hl(0, "RainbowOrange", { fg = "#D19A66" })
    vim.api.nvim_set_hl(0, "RainbowGreen", { fg = "#98C379" })
    vim.api.nvim_set_hl(0, "RainbowViolet", { fg = "#C678DD" })
    vim.api.nvim_set_hl(0, "RainbowCyan", { fg = "#56B6C2" })
end)

vim.g.rainbow_delimiters = { highlight = highlight }
require("ibl").setup { scope = { highlight = highlight } }

hooks.register(hooks.type.SCOPE_HIGHLIGHT, hooks.builtin.scope_highlight_from_extmark)