# File lib/maruku/input/extensions.rb, line 20
        def check_span_extensions(src, con)
                c = src.cur_char
                if extensions = SpanExtensionsTrigger[c]
                        extensions.each do |e|
                                if e.regexp && (match = src.next_matches(e.regexp))
                                        return true if e.block.call(doc, src, con)
                                end
                        end
                end
                return false # not special
        end