title: How to identify different flavors of Markdown?
body: <p>Given the many flavors of Markdown in existence, is there a way to identify different flavors, by content type or other attribute?</p>
  <p>There is a general content type <code>text/markdown</code> as specified in <a href="https://www.rfc-editor.org/rfc/rfc7763" rel="nofollow noreferrer">IETF RFC-7763</a>, but that does not distinguish between different flavors.</p>
  <p>For example, RSS uses <code>application/rss+xml</code> so is there something like <code>text/markdown+gfm</code> for GitHub Flavored Markdown?</p>
  <p>Some flavors include:</p>
  <ul>
  <li><a href="http://commonmark.org/" rel="nofollow noreferrer">CommonMark</a></li>
  <li><a href="http://daringfireball.net/projects/markdown/syntax" rel="nofollow noreferrer">Daring Fireball</a></li>
  <li><a href="https://developer.github.com/v3/markdown/" rel="nofollow noreferrer">GitHub Flavored Markdown (GFM)</a></li>
  <li><a href="https://docs.ghost.org/faq/using-the-editor/#using-markdown" rel="nofollow noreferrer">Ghost Markdown</a></li>
  </ul>
  <p>I did find the following thread but the result seems to be to not support disambiguation:</p>
  <ul>
  <li><a href="https://talk.commonmark.org/t/ietf-request-for-input-text-markdown-media-type/700/12" rel="nofollow noreferrer">https://talk.commonmark.org/t/ietf-request-for-input-text-markdown-media-type/700/12</a></li>
  </ul>