Hello,
I think I may have stumbled across a bug in Blackfriday when I tried to nest multiple fenced (```) code blocks inside a “>”-prefixed blockquote section when I was experimenting with writing a blog entry at few days ago. More details may be found in the bug report filed against Blackfriday here: Multiple fenced code blocks inside a ">"-prefixed blockquote rendered incorrectly · Issue #122 · russross/blackfriday · GitHub
Speaking of Blackfriday, I think it may be a good idea to mention it in the Hugo docs: to give credit to such a wonderful Markdown processor for Go, to give a heads up to the end-users what flavor of Markdown Blackfriday (hence Hugo) uses, to link to the Blackdown documentation for reference, etc. What do you think? 