This is an experimental Tree-sitter grammar for Direnv files (.envrc). The goal is to provides syntax highlighting and parsing for Direnv files, including:

• Direnv-specific functions (has, use, layout, etc.)
• Path manipulation functions (PATH_add, source_env, etc.)
• Shell scripting constructs
• Variable expansions and command substitutions
• Comments and strings

without using editor-specific syntax files, such as a syntax.vim. This project was designed to be used alongside my Neovim plugin for Direnv, but should work fine with any editor that supports Tree-sitter directly. If you are knowledgable in other editors, feel free to update the documentation for your own editor below!

git clone https://github.com/notashelf/tree-sitter-direnv.git
cd tree-sitter-direnv

# You will need the tree-sitter CLI installed.
tree-sitter build

Add the following to your Neovim configuration:

require('nvim-treesitter.configs').setup {
  ensure_installed = { "direnv" },
  highlight = {
    enable = true,
  },
}

(add-to-list 'tree-sitter-major-mode-language-alist '(direnv-mode . direnv))

tree-sitter build

tree-sitter test

tree-sitter generate

This project is made available under Mozilla Public License (MPL) version 2.0. See LICENSE for more details on the exact conditions. An online copy is provided here.