# File lib/active_support/inflector.rb, line 259 def parameterize(string, sep = '-') re_sep = Regexp.escape(sep) # replace accented chars with ther ascii equivalents parameterized_string = transliterate(string) # Turn unwanted chars into the seperator parameterized_string.gsub!(/[^a-z0-9\-_\+]+/i, sep) # No more than one of the separator in a row. parameterized_string.squeeze!(sep) # Remove leading/trailing separator. parameterized_string.gsub!(/^#{re_sep}|#{re_sep}$/i, '') parameterized_string.downcase end