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lib/spree/localized_number.rb

@@ -44,6 +44,7 @@ module Spree
 
     def self.valid_localizable_number?(number)
       return true unless number.is_a?(String) || number.respond_to?(:to_d)
+      # Invalid if only two digits between dividers, or if any non-number characters
       return false if number.to_s =~ /[.,]\d{2}[.,]/ || number.to_s =~ /[^0-9,.]+/
 
       true