Sublime Racket

A Sublime Text 4 plugin for the Racket programming language.

Current features include:

• syntax definition and highlighting: every Racket form and literal is scoped
• Rhombus: highlighting for .rhm files, with the build system and REPL
• build system: run, test, compile and format from command palette
• symbol indexing: Goto Symbol lists defined functions and structs
• comment settings: Toggle Comment uses ; and #| |#
• bracket handling: auto-indent after an open bracket, outdent on close
• REPL: open a Racket REPL in Terminus and send a file, selection, definition or s-expression to it from command palette
• documentation lookup: search the Racket docs for the identifier at the cursor from command palette

Installation

Via Package Control: Package Control: Install Package, then choose Racket.

Recommended setup

• Terminus: required by the REPL commands
• Parinfer: automatic management of parentheses based on code identation
• LSP with racket-langserver: completion, diagnostics, go to definition and hover docs

Install the server with raco pkg install racket-langserver, then register it in Preferences > Package Settings > LSP > Settings:

{
  "clients": {
    "racket-langserver": {
      "enabled": true,
      "command": ["racket", "--lib", "racket-langserver"],
      "selector": "source.racket, source.rhombus"
    }
  }
}

racket must be on the PATH Sublime sees.

Features

Detailed information about supported features is in docs/features.md.