GitHub-flavored markdown supports syntax highlighting in codeblocks. This is done by adding the name of the language next to the triple-grave codeblock markers:
Yes, it is possible with Github Markdown:
I needed to do the same with an XML-structure inside a table row (in my case defined with markdown, nit html, so with | | delimitiers for the table structure)
just put the desired Style-class (in my case .language-xml) within the Structure {: }
` `{:.language-xml}
this will set the style of the table cell to highlight the code according to the set style class
i guess for ruby it then will just be
{:.language-ruby}
took me over an hour to figure out, found the solution nowhere, so i thought i'd post it here if anyone stumbles upon this problem again.