If you’re a programmer, chances are that you’re going to include some source code in your articles and books. Glyph offers two ways to format code blocks effortlessly: the codeblock macro, which simply wraps text into <pre> and <code> tags, or the highlight macro. The last one requires either Coderay or Ultraviolet, but it provides syntax highlighting for the most common programming languages.

Cosider the following piece of ruby code:

def find_child(&block)
  children.each do |c|
    c.descend do |node, level|
      return node if block.call(node)
    end
  end
  nil
end

It can be wrapped in a highlight macro, like so:

 highlight[=ruby|
   def find_child(&block)
     children.each do |c|
       c.descend do |node, level|
         return node if block.call(node)
       end
     end
     nil
   end
=]

...to produce the following, using the coderay highlighter:

def find_child(&block)
  children.each do |c|
    c.descend do |node, level|
      return node if block.call(node)
    end
  end
  nil
end