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nvim-cmp Buffer Lines

<a href="#preview" id="toc-preview">Preview</a>
<a href="#introduction" id="toc-introduction">Introduction</a>
<a href="#installation" id="toc-installation">Installation</a>
- <a href="#packernvim" id="toc-packernvim">packer.nvim</a>
<a href="#setup" id="toc-setup">Setup</a>
- <a href="#options" id="toc-options">Options</a>
- <a href="#command-line" id="toc-command-line">Command-line</a>
- <a href="#only-for-certain-file-types" id="toc-only-for-certain-file-types">Only for certain file types</a>
<a href="#todo" id="toc-todo">TODO</a>

Preview

Introduction

nvim-cmp Buffer Lines is a completion source for nvim-cmp that provides a source for all the lines in the current buffer. This is especially useful for C programmers. It uses tree-sitter if you have it installed on your system. tree-sitter is optional but recommended.

Installation

packer.nvim

require "packer".startup(function(use)
    use "amarakon/nvim-cmp-buffer-lines"
end)

Setup

require "cmp".setup {
    sources = {
        {
            name = "buffer-lines",
            option = { … }
        }
    }
}

Options

Option	Type	Default	Description
`words`	Boolean	`false`	Include words
`comments`	Boolean	`false`	Include comments
`line_numbers`	Boolean	`false`	Include line numbers in the completion menu (does not apply on selection/confirmation)
`line_number_separator`	String	`" "`	The separator between the line number and the line text (only used if `line_numbers` is set.
`leading_whitespace`	Boolean	`true`	Include leading whitespace in the completion menu (does not apply on selection/confirmation)
`max_indents`	Number	`0`	Maximum indentation level lines can be shown (0-indexed). For example, lines with one or more indents will not be shown when this is set to `1`. Set to `0` to show an unlimited amount of indents.
`max_size`	Number	`100`	Maximum file size (in kB) for which this plugin will be activated

Command-line

You can use this source for searching for patterns in the command-line. I recommend using it in conjunction with cmp-buffer for a bread-and-butter combination. The following code block is the configuration I use and recommend.

-- Enable `buffer` and `buffer-lines` for `/` and `?` in the command-line
require "cmp".setup.cmdline({ "/", "?" }, {
    mapping = require "cmp".mapping.preset.cmdline(),
    sources = {
        {
            name = "buffer",
            option = { keyword_pattern = [[\k\+]] }
        },
        { name = "buffer-lines" }
    }
})

Only for certain file types

-- Only enable `buffer-lines` for C and C++
require "cmp".setup.filetype({ "c", "cpp" }, {
    sources = {
        { name = "buffer-lines" }
    }
})