in _plugins/jekyll_relative_links.rb [181:190]
def link_parts(matches)
last_inline = 5
link_type = matches[2] ? :inline : :reference
link_text = matches[link_type == :inline ? 2 : last_inline + 1]
relative_path = matches[link_type == :inline ? 3 : last_inline + 2]
fragment = matches[link_type == :inline ? 4 : last_inline + 3]
title = matches[link_type == :inline ? 5 : last_inline + 4]
Link.new(link_type, link_text, relative_path, fragment, title)
end