Traditional highlighting (left) vs Treesitter-based highlighting (right). See more examples in our gallery.
Warning: Treesitter and Treesitter highlighting are an experimental feature of nightly versions of Neovim. Please consider the experience with this plug-in as experimental until Neovim 0.5 is released!
- Neovim nightly
git
in your path.- A C compiler in your path (Windows users please read this!).
You can install nvim-treesitter
with your favorite package manager, or using the default pack
feature of Neovim!
If you are using vim-plug, put this in your init.vim
file:
Plug 'nvim-treesitter/nvim-treesitter'
We highly recommend reading :h packages
to learn more about this feature, but you can still follow these steps:
$ mkdir -p ~/.local/share/nvim/site/pack/nvim-treesitter/start
$ cd ~/.local/share/nvim/site/pack/nvim-treesitter/start
$ git clone https://github.com/nvim-treesitter/nvim-treesitter.git
Treesitter uses a different parser for every language. It can be quite a pain to install, but fortunately nvim-treesitter
provides two command to tackle this issue:
TSInstall {language}
to install one or more parsers.TSInstall <tab>
will give you a list of supported languages, or selectall
to install them all.TSInstallInfo
to know which parser is installed.
Let's say you need parsers for lua
, this is how you install it:
:TSInstall lua
Downloading...
Compiling...
Treesitter parser for lua has been installed
Cool, lets see which parsers are installed:
:TSInstallInfo
lua [✓] installed
c [✗] installed
html [✗] not installed
typescript [✗] not installed
...
And now you should be ready to use every functionality nvim-treesitter
provides!
All modules are disabled by default,
so you'll need to activate them by putting this in your init.vim
file:
lua <<EOF
require'nvim-treesitter.configs'.setup {
ensure_installed = "all", -- one of "all", "language", or a list of languages
highlight = {
enable = true, -- false will disable the whole extension
disable = { "c", "rust" }, -- list of language that will be disabled
},
}
EOF
Check :h nvim-treesitter-modules
for a list of available modules and its options.
Consistent syntax highlighting.
lua <<EOF
require'nvim-treesitter.configs'.setup {
highlight = {
enable = true,
custom_captures = {
-- Highlight the @foo.bar capture group with the "Identifier" highlight group.
["foo.bar"] = "Identifier",
},
},
}
EOF
Incremental selection based on the named nodes from the grammar.
lua <<EOF
require'nvim-treesitter.configs'.setup {
incremental_selection = {
enable = true,
keymaps = {
init_selection = "gnn",
node_incremental = "grn",
scope_incremental = "grc",
node_decremental = "grm",
},
},
}
EOF
Other modules can be installed as plugins.
- refactor - Refactoring and definition modules
- textobjects - Textobjects defined by tree-sitter queries
- playground - Treesitter integrated playground
set foldmethod=expr
set foldexpr=nvim_treesitter#foldexpr()
This will respect your foldnestmax
setting.
echo nvim_treesitter#statusline(90) " 90 can be any length
module->expression_statement->call->identifier
Each feature can be enabled or disabled by different means:
:TSBufEnable {module} " enable module on current buffer
:TSBufDisable {module} " disable module on current buffer
:TSEnableAll {module} [{ft}] " enable module on every buffer. If filetype is specified, enable only for this filetype.
:TSDisableAll {module} [{ft}] " disable module on every buffer. If filetype is specified, disable only for this filetype.
:TSModuleInfo [{module}] " list information about modules state for each filetype
Check :h nvim-treesitter-commands
for a list of all available commands.
For nvim-treesitter
to work, we need to use query files such as those you can find in
queries/{lang}/{locals,highlights,textobjects}.scm
We are looking for maintainers to write query files for their languages.
List of currently supported languages:
- bash (maintained by @TravonteD)
- c (maintained by @vigoux)
- c_sharp (maintained by @svermeulen)
- cpp (maintained by @theHamsta)
- css (maintained by @TravonteD)
- dart (maintained by @Akin909)
- elm
- fennel (maintained by @TravonteD)
- go (maintained by @theHamsta, @WinWisely268)
- haskell
- html (maintained by @TravonteD)
- java (maintained by @p00f)
- javascript (maintained by @steelsojka)
- jsdoc (maintained by @steelsojka)
- json (maintained by @steelsojka)
- julia
- lua (maintained by @vigoux)
- markdown
- nix
- ocaml (maintained by @undu)
- ocaml_interface (maintained by @undu)
- ocamllex (maintained by @undu)
- php (maintained by @tk-shirasaka)
- python (maintained by @stsewd, @theHamsta)
- ql (maintained by @pwntester)
- Tree-sitter query language (maintained by @steelsojka)
- regex (maintained by @theHamsta)
- rst (maintained by @stsewd)
- ruby (maintained by @TravonteD)
- rust (maintained by @vigoux)
- scala
- swift
- toml (maintained by @tk-shirasaka)
- tsx
- typescript (maintained by @steelsojka)
- vue
- yaml
The goal of nvim-treesitter
is both to provide a simple and easy way to use the interface for Treesitter in Neovim,
but also to add some functionalities to it.
You can find the roadmap here. The roadmap and all features of this plugin are open to change, and any suggestion will be highly appreciated!
Users and plugin authors can take advantage of modules by creating their own. Modules provide:
- Treesitter language detection support
- Attach and detach to buffers
- Works with all nvim-treesitter commands
You can use the define_modules
function to define one or more modules or module groups.
require'nvim-treesitter'.define_modules {
my_cool_plugin = {
attach = function(bufnr, lang)
-- Do cool stuff here
end,
detach = function(bufnr)
-- Undo cool stuff here
end,
is_supported = function(lang)
-- Check if the language is supported
end
}
}
Modules can consist of the following properties:
module_path
: A require path (string) that exports a module with anattach
anddetach
function. This is not required if the functions are on this definition.enable
: Determines if the module is enabled by default. This is usually overridden by the user.disable
: A list of languages that this module is disabled for. This is usually overridden by the user.is_supported
: A function that takes a language and determines if this module supports that language.attach
: A function that attaches to a buffer. This is required ifmodule_path
is not provided.detach
: A function that detaches from a buffer. This is required ifmodule_path
is not provided.
You can get some utility functions with
local ts_utils = require 'nvim-treesitter.ts_utils'
Check :h nvim-treesitter-utils
for more information.
Queries are what nvim-treesitter
uses to extract informations from the syntax tree, and they are
located in the queries/{lang}/*
runtime directories (like the queries
folder of this plugin).
nvim-treesitter
considers queries as any runtime file (see :h rtp
), that is :
- if the file is in any
after/queries/
folder, then it will be used to extend the already defined queries. - Otherwise, it will be used as a base to define the query, the first query found (with the highest priority) will be the only one to be used.
This hybrid approach is the most standard way, and according to that, here is some ideas on how to use is :
- If you want to rewrite (or write) a query, don't use
after/queries
. - If you want to override a part of a query (only one match for example), use the
after/queries
directory.
Before doing anything make sure you have the latest version of this plugin and run :checkhealth nvim_treesitter
.
This will help you find where the bug might come from.
First, check the ## {language} parser healthcheck
section of :checkhealth
if you have any warning.
If you do, it's highly possible that this is the cause of the problem.
If everything is okay, then it might be an actual error.
In both cases, feel free to open an issue here.
Make sure you have the latest nightly version of Neovim.
This is probably due to a change in a parser's grammar or its queries.
Try updating the parser that you suspect has changed (:TSUpdate {language}
) or all of them (:TSUpdate
).
If the error persists after updating all parsers,
please open an issue.
I experience weird highlighting issues similar to #78
This is a well known issue, which arise when the tree and the buffer are getting out of sync. As this issue comes from upstream, we don't have any finite fix. To get around this, you can force reparsing the buffer with this command:
:write | edit | TSBufEnable highlight
This will save, restore and enable highlighting for the current buffer, fixing the issue.
I experience bugs when using nvim-treesitter
's foldexpr
similar to #194
This might happen, and is known to happen with vim-clap
, to avoid those kind of errors, please use
setlocal
instead of set
for the appropriate filetypes.