Supported Languages

Rosettes supports 55 languages with hand-written state machine lexers.

Core Languages

Language	Aliases	Description
`python`	`py`,`python3`	Python 3.x
`javascript`	`js`	JavaScript/ECMAScript
`typescript`	`ts`	TypeScript
`json`		JSON data format
`yaml`	`yml`	YAML configuration
`toml`		TOML configuration
`bash`	`sh`,`shell`,`zsh`	Bash/shell scripts
`html`		HTML markup
`css`		CSS stylesheets
`diff`	`patch`	Unified diff format

Systems Languages

Language	Aliases	Description
`c`		C programming language
`cpp`	`c++`,`cxx`	C++ programming language
`rust`	`rs`	Rust programming language
`go`	`golang`	Go programming language
`zig`		Zig programming language

JVM Languages

Language	Aliases	Description
`java`		Java programming language
`kotlin`	`kt`	Kotlin programming language
`scala`		Scala programming language
`groovy`		Groovy programming language
`clojure`	`clj`	Clojure programming language

Apple Ecosystem

Language	Aliases	Description
`swift`		Swift programming language

Scripting Languages

Language	Aliases	Description
`ruby`	`rb`	Ruby programming language
`perl`	`pl`	Perl programming language
`php`		PHP programming language
`lua`		Lua programming language
`r`		R statistical language
`powershell`	`ps1`,`pwsh`	PowerShell scripting

Functional Languages

Language	Aliases	Description
`haskell`	`hs`	Haskell programming language
`elixir`	`ex`,`exs`	Elixir programming language

Data & Query Languages

Language	Aliases	Description
`sql`		SQL query language
`csv`		CSV data format
`graphql`	`gql`	GraphQL query language

Markup Languages

Language	Aliases	Description
`markdown`	`md`	Markdown markup
`xml`		XML markup

Configuration Languages

Language	Aliases	Description
`ini`	`cfg`,`conf`	INI configuration
`nginx`		Nginx configuration
`dockerfile`	`docker`	Dockerfile
`makefile`	`make`	Makefile
`hcl`	`terraform`,`tf`	HashiCorp Configuration Language

Schema Languages

Language	Aliases	Description
`protobuf`	`proto`	Protocol Buffers

Modern Languages

Language	Aliases	Description
`dart`		Dart programming language
`julia`	`jl`	Julia programming language
`nim`		Nim programming language
`gleam`		Gleam programming language
`v`	`vlang`	V programming language

AI/ML Languages

Language	Aliases	Description
`mojo`	`🔥`	Mojo programming language
`triton`		Triton GPU language
`cuda`	`cu`	CUDA C/C++
`stan`		Stan probabilistic language

Other Languages

Language	Aliases	Description
`pkl`		Apple Pkl configuration
`cue`		CUE configuration
`tree`		Tree-sitter output
`kida`		Kida template language
`jinja`	`jinja2`,`j2`	Jinja2 templates
`plaintext`	`text`,`txt`	Plain text (no highlighting)

Checking Language Support

from rosettes import list_languages, supports_language

# List all languages
print(list_languages())
# ['bash', 'c', 'clojure', 'cpp', 'css', ...]

# Check specific language
supports_language("python")   # True
supports_language("py")       # True (alias)
supports_language("cobol")    # False

Using Aliases

All aliases map to their canonical language:

from rosettes import highlight

# These are all equivalent
highlight(code, "python")
highlight(code, "py")
highlight(code, "python3")

# JavaScript aliases
highlight(code, "javascript")
highlight(code, "js")

# Bash aliases
highlight(code, "bash")
highlight(code, "sh")
highlight(code, "shell")

Language Detection

Rosettes does not include automatic language detection. Specify the language explicitly:

# Always specify the language
html = highlight(code, "python")

For automatic detection, consider using a separate library likepygments.lexers.guess_lexer()or filename-based detection.