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Editor Support

Sage includes first-class editor support with syntax highlighting and real-time diagnostics via the Language Server Protocol (LSP).

Supported Editors

EditorExtensionHighlightingDiagnostics
ZedBuilt-inTree-sitterLSP
VS CodeMarketplaceTextMateLSP

Features

All Sage editor extensions provide:

  • Syntax Highlighting — Keywords, strings, comments, types, and more
  • Real-time Diagnostics — Errors and warnings as you type
  • Auto-indentation — Smart indentation for blocks and expressions

Language Server

The Sage language server (sage-sense) provides:

  • Parse error reporting
  • Type checking errors
  • Undefined variable detection
  • All compiler diagnostics in real-time

The language server is built into the sage CLI and starts automatically when you open a .sg file in a supported editor.

Manual LSP Setup

If you’re using an editor that supports LSP but doesn’t have a Sage extension, you can configure it to use:

sage sense

This starts the language server on stdin/stdout using the standard LSP protocol.