GitHub Markup
Determines which markup library to use to render a content file
This library is the first step of a journey that every markup file in a repository goes on before it is rendered on GitHub.com. GitHub-markup selects an underlying library to convert the raw markup to HTML. See the list of supported markup formats provided. The HTML is sanitized, aggressively removing things that could harm you and your kin—such as script tags, inline-styles, and class or id attributes. Syntax highlighting is performed on code blocks. See github/linguist for more information...