pretty_print_precip (Irc::Utils::Metar)

    # File rbot/utils.rb, line 598
           def pretty_print_precip(precip_mm, precip_in)
             # Returns amount if $precip_mm > 0, otherwise "trace" (see Federal
             # Meteorological Handbook No. 1 for code groups P, 6 and 7) used in
             # several places, so standardized in one function.
             if (precip_mm.to_i > 0)
               amount = sprintf(@strings['mm_inches'], precip_mm, precip_in)
             else
               amount = @strings['a_trace']
             end
             return sprintf(@strings['precip_there_was'], amount)
          end