Sup Language Support

Basic syntax highlighting for SUP (.sup).

Install from VSIX:

code --install-extension sup-language-support-0.0.1.vsix

Syntax highlighting for .sup files.

Package

Install Node.js, then:

npm i -g @vscode/vsce
cd vscode-extension
vsce package

This produces a .vsix that you can install in VS Code via Extensions → "Install from VSIX".