Evan Solomon

<p>Comment forms allow some HTML, this plugin extends that to let users type in <a href="http://daringfireball.net/projects/markdown/" rel="nofollow ugc">Markdown</a> and have it automatically converted to HTML.  It also extends Markdown with a couple features made popular <a href="https://github.com/github/github-flavored-markdown" rel="nofollow ugc">by GitHub</a>.  Conversion from Markdown to HTML is completely automated and doesn’t require anything on the commenter’s part.</p>
<p>The feature additions from GitHub are:</p>
<ul>
<li>Single linebreaks are treated as new paragraphs</li>
<li>Code “fencing” with three backticks (“`)</li>
</ul>
<p>Two notable features from GitHub’s Markdown implementation are missing:</p>
<ul>
<li>To do lists: Doing these well would require some front end interaction, which I decided is outside the scope of this plugin at least for now</li>
<li>Repository autolinking (e.g. comments, issues, etc): These seemed a little <em>too</em> GitHub-specific.</li>
</ul>
<p>GitHub-Flavored Markdown Comments is developed, unsurprisingly, <a href="https://github.com/evansolomon/wp-github-flavored-markdown-comments" rel="nofollow ugc">on GitHub</a>.</p>


GitHub-Flavored Markdown Comments

WordPress plugin to let commenters use (GitHub-flavored) Markdown, and turn it into HTML.

pReya

<p>This is a plugin for WordPress to embed Markdown files from external web sources (e.g. GitHub, GitLab, etc) into WordPress content using the shortcode <code>[external_markdown]</code>. A possible use case for this is to show content from a single source of truth (like a GitHub repository) on your WordPress website.</p>
<h3>Features</h3>
<ul>
<li>Embed any publicly accessible markdown file from other websites</li>
<li>Uses the public and free <a href="https://docs.github.com/en/rest/reference/markdown" rel="nofollow ugc">GitHub API</a> to transform Markdown to HTML (there is a rate limit – so don’t overdo it)</li>
<li>Caching support (so you can configure how often the file is being fetched from the source – default is a <strong>once per hour</strong> maximum)</li>
<li>Customise the CSS class of the markdown container to adjust styles</li>
</ul>
<h3>Instructions / Examples</h3>
<p>Download and unpack or clone this repository into your <code>wp-content/plugins</code> folder, so the PHP file resides in <code>wp-content/plugins/external-markdown/external-markdown.php</code>.</p>
<p>If you use the Guttenberg editor, you need to add a “Shortcode” block first. If your’re using the classic editor, you can use the shortcode right away.</p>
<h4>Simple embed</h4>
<p>The <code>url</code> parameter takes the URL to the Markdown file you want to embed. Make sure to <a href="#attention-when-using-github-gitlab-etc" rel="nofollow ugc">use the “raw” URL when you use GitHub, GitLab, etc</a>.<br />
    <code>[external_markdown url="https://raw.githubusercontent.com/pReya/wordpress-external-markdown/main/README.md"]</code></p>
<h4>Adjust caching duration</h4>
<p>The <code>ttl</code> parameter controls how long the cached version is used, before it’s fetched again. The value is given in seconds. So 24 hours (24* 60 *60) result in a value of 86400.<br />
    <code>[external_markdown ttl=86400 url="https://raw.githubusercontent.com/pReya/wordpress-external-markdown/main/README.md"]</code></p>
<h4>Adjust container CSS class</h4>
<p>The <code>class</code> parameter takes your desired class name for the external markdown container. The default class name for the container is <code>class='external-markdown'</code>.<br />
    <code>[external_markdown class="my-classname" url="https://raw.githubusercontent.com/pReya/wordpress-external-markdown/main/README.md"]</code></p>
<h4>Attention when using GitHub, GitLab, etc.</h4>
<p>When embedding content from Git hosting services like GitHub or GitLab, you need to make sure to use the proper “raw” markdown URL. You can find this URL in the upper right corner of the web view.</p>
<h3>Attribution</h3>
<ul>
<li>This plugin was inspired by the great <a href="https://wordpress.org/plugins/documents-from-git/" rel="ugc">wordpress-markdown-git</a> plugin, which serves a similar purpose, but uses the Git provider APIs to fetch the raw Markdown files – which is a little more complicated than this approach here.</li>
</ul>


External Markdown

Working well

This is a plugin for Wordpress to embed Markdown files from external web sources (e.g. GitHub, GitLab, etc) into WordPress content.

GitHub-Flavored Markdown Comments vs External Markdown