Language Support

The following languages and Language Servers are supported. In order to use Language Server features, you must first install the appropriate Language Server.

Check the language support in your installed helix version with hx --health.

Also see the Language Configuration docs and the Adding Languages guide for more language configuration information.

LanguageSyntax HighlightingTreesitter TextobjectsAuto IndentDefault LSP
bash✓bash-language-server
c✓✓✓clangd
c-sharp✓OmniSharp
cairo✓
cmake✓✓✓cmake-language-server
comment✓
cpon✓✓
cpp✓✓✓clangd
css✓vscode-css-language-server
dart✓✓dart
devicetree✓✓
dockerfile✓docker-langserver
eex✓
ejs✓
elixir✓elixir-ls
elm✓elm-language-server
erb✓
erlang✓erlang_ls
fish✓✓✓
gdscript✓✓
git-attributes✓
git-commit✓
git-config✓
git-diff✓
git-ignore✓
git-rebase✓
gleam✓
glsl✓✓
go✓✓✓gopls
gomod✓gopls
gowork✓gopls
graphql✓
hare✓✓
haskell✓haskell-language-server-wrapper
hcl✓✓terraform-ls
heex✓
html✓vscode-html-language-server
iex✓
java✓
javascript✓✓typescript-language-server
json✓✓vscode-json-language-server
jsx✓✓typescript-language-server
julia✓julia
kotlin✓kotlin-language-server
latex✓texlab
lean✓lean
ledger✓
llvm✓✓✓
llvm-mir✓✓✓
llvm-mir-yaml✓✓
lua✓✓
make✓
markdown✓
mintmint
nickel✓✓nls
nix✓✓rnix-lsp
nu✓
ocaml✓✓ocamllsp
ocaml-interface✓ocamllsp
org✓
perl✓✓✓
php✓✓✓intelephense
prologswipl
protobuf✓✓
python✓✓✓pylsp
r✓R
racketracket
regex✓
rescript✓✓rescript-language-server
rmarkdown✓✓R
ron✓✓
ruby✓✓✓solargraph
rust✓✓✓rust-analyzer
scala✓✓metals
solidity✓solc
sql✓
svelte✓✓svelteserver
swift✓sourcekit-lsp
tablegen✓✓✓
tfvarsterraform-ls
toml✓taplo
tsq✓
tsx✓typescript-language-server
twig✓
typescript✓✓typescript-language-server
vala✓vala-language-server
vue✓vls
wgsl✓
yaml✓✓yaml-language-server
zig✓✓zls