Comment forms allow some HTML, this plugin extends that to let users type in Markdown and have it automatically converted to HTML. It also extends Markdown with a couple features made popular by GitHub. Conversion from Markdown to HTML is completely automated and doesn’t require anything on the commenter’s part.
The feature additions from GitHub are:
- Single linebreaks are treated as new paragraphs
- Code “fencing” with three backticks (“`)
Two notable features from GitHub’s Markdown implementation are missing:
- 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
- Repository autolinking (e.g. comments, issues, etc): These seemed a little too GitHub-specific.
GitHub-Flavored Markdown Comments is developed, unsurprisingly, on GitHub.