*** oddb.org/src/util/interval.rb	2011-11-23 08:42:36.592922761 +0100
--- interval.rb	2011-11-23 12:03:13.747754607 +0100
***************
*** 92,98 ****
  					intervals
  					parts = @numbers
  				end
! 				parts.each { |part|
  					@model.concat(index_lookup(part).sort_by { |item| 
  						comparison_value(item)
  					})
--- 92,98 ----
  					intervals
  					parts = @numbers
  				end
! 				parts.each_char { |part|
  					@model.concat(index_lookup(part).sort_by { |item| 
  						comparison_value(item)
  					})