Mise for Zed

Professional syntax highlighting and configuration support for mise configuration files in Zed IDE.

Features

• Syntax Highlighting - Complete, theme-aware syntax highlighting for mise.toml and .mise.toml files
• Section Support - Full support for all mise sections: [tools], [env], [tasks], [vars], [hooks], [plugins], [settings]
• Property Recognition - Accurate highlighting of task properties: run, depends, description, sources, dir, env, etc.
• Environment Variables - Smart detection and highlighting of environment variable identifiers (UPPERCASE)
• Template Syntax - Proper highlighting of Tera template expressions ({{ env.VAR }}, {{ cwd }})
• Performance - TreeSitter-based syntax engine, <10ms per file
• Zero Cost - No external dependencies, no paywalls, completely free

Installation

1. Open Zed
2. Open Extensions (Cmd+Shift+X)
3. Search for "mise"
4. Click Install

Supported Files

• mise.toml
• .mise.toml
• mise.local.toml
• .mise.local.toml

Example

[tools]
python = "3.12"
node = "22"
uv = "latest"

[env]
NODE_ENV = "development"
DATABASE_URL = "{{ env.DATABASE_URL }}"

[tasks.dev]
description = "Start development server"
run = "uv run python -m uvicorn main:app --reload"
depends = ["install"]

[hooks.enter]
run = "uv sync --quiet"

Development

Building Locally

# Build the extension
cargo build

# Build for release (optimized)
cargo build --release

# Run tests (when added)
cargo test

Project Structure

src/lib.rs              # Extension implementation (minimal)
languages/mise/
├── config.toml         # Language configuration
├── highlights.scm      # TreeSitter highlighting rules
└── indents.scm         # Indentation rules
examples/               # Production-ready configurations
├── python-uv.toml
├── nextjs-fullstack.toml
├── go-minimal.toml
└── rust-release.toml
.zed/tasks.json         # Native Zed tasks for config generation
docs/                   # Comprehensive documentation
Cargo.toml              # Rust dependencies
extension.toml          # Zed extension manifest

Using Configuration Templates

Instead of manual creation, use Zed's native task support:

1. Copy templates directly

   cp examples/python-uv.toml mise.toml

2. Or use Zed tasks (when in this project)

   • Cmd+Shift+P → search "mise"
   • Select a template generation task
   • Configuration created instantly

3. Edit for your project

   • Customize versions and paths
   • Add project-specific settings

Testing

Run the automated test suite:

./tests/test-extension.sh

For manual testing in Zed:

1. Build: cargo build --release
2. Reload extensions: Cmd+Shift+P → "Reload Extensions"
3. Open test files: tests/test.mise.toml
4. Verify syntax highlighting with colors
5. Test Zed tasks: Cmd+Shift+P → search "mise:"

See tests/README.md for comprehensive testing guide.

Architecture

The extension provides:

1. Syntax Highlighting - TreeSitter-based via highlights.scm
2. Language Recognition - Automatic detection of mise.toml files
3. Zero Dependencies - Pure Rust, minimal footprint

Contributing

Contributions are welcome! Please ensure:

• Code compiles without warnings: cargo build --release
• Syntax highlighting improvements in languages/mise/highlights.scm
• New slash commands follow the existing pattern in src/lib.rs

Issues & Feature Requests

Found a bug or have a feature idea? Open an issue on GitHub.

License

MIT License - Copyright (c) 2024-2026 Franco Tampieri - TTlab