Kai Language Support

A VS Code extension for the Kai programming language — a complete language extension whose TextMate grammar mirrors the tree-sitter-kai grammar (grammar.js) and its highlight queries:

icons/kai.svg              File icon (16×16, ocean-blue wave)
syntaxes/kai.tmLanguage.json  TextMate grammar
language-configuration.json   Brackets / comments / auto-closing
icon-theme.json            File icon theme definition
package.json               Extension manifest

Install

No node_modules setup is required — this is a static extension.

Option A — Install the extension folder (simplest)

1. Copy this folder to your extensions directory:
   • Linux: ~/.vscode/extensions/kai-lang.kai/
   • macOS: ~/.vscode/extensions/kai-lang.kai/
   • Windows: %USERPROFILE%\.vscode\extensions\kai-lang.kai\
2. Reload VS Code (Developer: Reload Window).

Option B — Package as .vsix

npm install -g @vscode/vsce
# run from this folder:
vsce package
# → kai-0.1.0.vsix

Then install via the Extensions view → ... → Install from VSIX....

Option C — Development (F5)

Open this folder in VS Code and press F5 to launch an Extension Development Host.

What to expect

• .kai files open as the Kai language with syntax highlighting.
• The Kai file icon shows automatically (via languages[].icon).
• The dedicated icon theme is optional — select Kai File Icons for workbench.iconTheme, or add "workbench.iconTheme": "kai-icons" to settings.json.

Note: file icon themes take precedence over languages[].icon, so if the active theme defines its own .kai icon, it wins.

Known outstanding work

• Language configuration is minimal; add more autoClosingPairs/surroundingPairs as the language stabilizes.
• Semantic highlighting — a future LSP/resolver can feed semantic tokens on top of the TextMate layer.
• This TextMate grammar is hand-written to match the tree-sitter-kai grammar; keep it in sync whenever grammar.js changes (validate with tree-sitter test upstream).

Requirements

• VS Code >= 1.75.0.