Stampdown Language Support

Syntax highlighting and language features for Stampdown template files.

Stampdown is a Markdown templating language with Handlebars-like expressions, combining the simplicity of Markdown with the power of template expressions.

Features

Syntax Highlighting

• Expressions - {{name}}, {{user.email}}
• Block Helpers - {{#if}}...{{else}}...{{/if}}
• Self-Closing Helpers - {{#uppercase name/}}
• Partials & Layouts - {{> header}}, {{#> layout}}...{{/layout}}
• Dynamic Partials - {{> (partialName) }}
• Comments - {{!-- comment --}}
• Variable Assignment - {{ x = 5 }}, {{ name = \Hello ${user}` }}`
• Advanced Expressions - {{#if age > 18}}, {{#unless premium && verified}}

Intellisense

• Auto-detection - .sdt files automatically use Stampdown syntax
• Bracket Matching - Smart matching for {{...}} delimiters
• Quick Comments - Toggle comments with Ctrl+/ (Cmd+/)
• Auto-Indentation - Indentation within block helpers

Installation

1. Install the extension from the VS Code Marketplace
2. Open or create a .sdt file
3. Start writing Stampdown templates with full syntax highlighting!

Customizing Syntax Colors

Personalize the look of your Stampdown templates by customizing syntax colors in your VS Code settings.json:

{
  "editor.tokenColorCustomizations": {
    "textMateRules": [
      {
        "scope": "entity.name.function.handlebars",
        "settings": {
          "foreground": "#C586C0",
          "fontStyle": "bold"
        }
      },
      {
        "scope": "variable.other.handlebars",
        "settings": {
          "foreground": "#9CDCFE"
        }
      },
      {
        "scope": "variable.language.handlebars",
        "settings": {
          "foreground": "#4FC1FF",
          "fontStyle": "bold"
        }
      },
      {
        "scope": "keyword.control.handlebars",
        "settings": {
          "foreground": "#C586C0",
          "fontStyle": "bold"
        }
      },
      {
        "scope": "constant.numeric.handlebars",
        "settings": {
          "foreground": "#B5CEA8"
        }
      },
      {
        "scope": "string.quoted.double.handlebars, string.quoted.single.handlebars",
        "settings": {
          "foreground": "#CE9178"
        }
      },
      {
        "scope": "comment.block.handlebars",
        "settings": {
          "foreground": "#6A9955",
          "fontStyle": "italic"
        }
      }
    ]
  }
}

Contributing

Found a bug or have a feature request? Please open an issue on GitHub.

License

MIT © 2025 Ascot Software