Initial version of :link_auto warnings.

      member_re = "(?:#([A-Za-z0-9]+))"

      input.gsub(/\b#{cls_re}#{member_re}?\b|#{member_re}\b/m) do

        cls = $1

        member = $2 || $3

        if cls && @relations[cls] && (member ? get_matching_member(cls, member) : cls =~ /\./)

          label = member ? cls+"."+member : cls

          link(cls, member, label)

        elsif !cls && member && get_matching_member(@class_context, member)

          link(@class_context, member, member)

        replace_magic_link($1, $2 || $3)

      end

    end

    def replace_magic_link(cls, member)

      if cls && member

        if @relations[cls] && get_matching_member(cls, member)

          return link(cls, member, cls+"."+member)

        else

          warn_magic_link("#{cls}##{member} links to non-existing " + (@relations[cls] ? "member" : "class"))

        end

      elsif cls && cls =~ /\./

        if @relations[cls]

          return link(cls, nil, cls)

        else

          "#{cls}#{member ? '#' : ''}#{member}"

          warn_magic_link("#{cls} links to non-existing class")

        end

      elsif !cls && member

        if get_matching_member(@class_context, member)

          return link(@class_context, member, member)

        else

          warn_magic_link("##{member} links to non-existing member")

        end

      end

      return "#{cls}#{member ? '#' : ''}#{member}"

    end

    def warn_magic_link(msg)

      Logger.instance.warn(:link_auto, msg, @doc_context[:filename], @doc_context[:linenr])

    end

    # applies the image template

        [:link, "{@link} to unknown class or member"],

        [:link_private, "{@link} to private member"],

        [:link_ambiguous, "{@link} is ambiguous"],

        [:link_auto, "Auto-detected link to unknown class or member"],

        [:alt_name, "Name used as both classname and alternate classname"],

        [:name_missing, "Member or parameter has no name"],