Supported Languages

Rune groups language support into tiers. Each tier builds on the one below it, so every supported capability remains available as a language moves up.

Support tiers

Tier	Capabilities
Tier 1	All Tier 2 features, plus LSP and full ecosystem workflows.
Tier 2	All Tier 3 features, plus the symbol indexer.
Tier 3	Syntax highlighting and structural queries.

Tier 1 languages

Language	Status
Go	Supported
Python	Supported
Rust	Beta
Zig	Beta
TypeScript and JavaScript	Beta

Beta means the language is complete enough for daily work and shipped by default, while its commands and defaults may still change between releases.

Code intelligence works the same way across Tier 1 languages. See the Code Intelligence guide for the cross-language lsp command: go to definition, find references, diagnostics, hover, rename, and formatting.

Working in a repository with several projects side by side? See the Monorepos guide for how Rune discovers each project and keeps search fast at scale.

Tier 3 language packages

Rune offers Tier 3 support for over 300 additional languages through downloadable language packages. Each package bundles a Tree-sitter grammar and a set of query files, giving Rune a real parse tree for the file instead of plain text. That parse tree powers syntax highlighting, code folding, indentation, and (most usefully) structural search and navigation.

ada	git_config	matlab	sflog
agda	git_rebase	mdx	slang
angular	gitattributes	menhir	slim
apex	gitcommit	mermaid	slint
arduino	gitignore	meson	smali
asm	gleam	mlir	smithy
astro	glimmer	nasm	snakemake
authzed	glimmer_javascript	nginx	snl
awk	glimmer_typescript	nickel	solidity
bash	glsl	nim	soql
bass	gn	nim_format_string	sosl
beancount	gnuplot	ninja	sourcepawn
bibtex	go	nix	sparql
bicep	goctl	nqc	sproto
bitbake	godot_resource	nu	sql
blade	gomod	objc	squirrel
bp	gosum	objdump	ssh_config
bpftrace	gotmpl	ocaml	starlark
brightscript	gowork	ocaml_interface	strace
c	gpg	ocamllex	styled
c_sharp	graphql	odin	superhtml
c3	gren	pascal	surface
caddy	groovy	passwd	svelte
cairo	groq	pem	sway
capnp	gstlaunch	perl	swift
chatito	hack	php	sxhkdrc
circom	hare	php_only	systemtap
clojure	haskell	phpdoc	systemverilog
cmake	haskell_persistent	pioasm	t32
comment	hcl	pkl	tablegen
commonlisp	heex	po	tact
cooklang	helm	pod	tcl
corn	hjson	poe_filter	teal
cpon	hlsl	pony	templ
cpp	hocon	powershell	tera
css	hoon	printf	terraform
csv	html	prisma	textproto
cuda	htmldjango	problog	thrift
cue	http	prolog	tiger
cylc	hurl	promql	tlaplus
d	hyprlang	properties	todotxt
dart	idl	proto	toml
desktop	idris	prql	tsv
devicetree	ini	psv	turtle
dhall	inko	pug	twig
diff	ispc	puppet	typescript
disassembly	janet_simple	purescript	typespec
djot	java	pymanifest	typoscript
dockerfile	javadoc	python	typst
dot	jinja	ql	udev
doxygen	jinja_inline	qmldir	ungrammar
dtd	jq	qmljs	unison
earthfile	jsdoc	query	usd
ebnf	json	r	uxntal
editorconfig	json5	racket	v
eds	jsonnet	rasi	vala
eex	julia	razor	vento
elixir	just	rbs	vhdl
elm	kcl	re2c	vhs
elsa	kconfig	readline	vim
elvish	kdl	regex	vimdoc
embedded_template	kos	rego	vrl
enforce	kotlin	requirements	vue
erlang	koto	rescript	wgsl
facility	kusto	rifleconf	wgsl_bevy
faust	lalrpop	rnoweb	wing
fennel	latex	robot	wit
fidl	ledger	robots_txt	wxml
firrtl	linkerscript	roc	xcompose
fish	liquid	ron	xml
forth	llvm	rst	xresources
fortran	lua	ruby	yaml
fsh	luadoc	runescript	yang
fsharp	luap	rust	yuck
func	luau	scala	zig
gap	m68k	scfg	ziggy
gaptst	make	scheme	ziggy_schema
gdscript	markdown	scss	zsh
gdshader	markdown_inline

Installing a language package

You do not install these ahead of time. When you open a file in a language whose package is not yet installed, Rune offers to download and install it, so the right grammar is always ready when you open the matching file type. This is governed by the updates.auto_install setting, which is False by default: Rune prompts before installing. During first-run onboarding, Rune installs packages without prompting regardless of this setting.

To install packages silently without being asked, set auto_install to True:

config.yaml

updates:
  auto_install: true

config.star

config["updates"]["auto_install"] = True

With auto-install turned off (the default), opening a file in a language whose package is not yet installed makes Rune prompt you:

Option	Effect
Yes	Install the package for this file.
Yes, Always	Install now, and auto-install future languages on open without asking again.
No	Skip it this time.

Yes and No apply only to the current file. Yes, Always persists your choice: it installs this package and auto-installs future languages on open without asking again.