{
  "key": "comments",
  "patterns": [
    {
      "name": "comment.md",
      "begin": "(<!(?:-{2,}))",
      "end": "((?:-{2,})>)",
      "captures": {
        "1": {
          "name": "punctuation.md"
        },
        "3": {
          "name": "punctuation.md"
        }
      }
    }
  ]
}