unit.rb

    def location e

      #
      # shri - Add this line since backtrace is sometimes nil (bug)
      #
      if not e.backtrace then return "" end

      last_before_assertion = ""
      e.backtrace.reverse_each do |s|
        break if s =~ /in .(assert|refute|flunk|pass|fail|raise)/
        last_before_assertion = s
      end
      last_before_assertion.sub(/:in .*$/, '')
    end