# File lib/mail/version_specific/ruby_1_8.rb, line 11 def Ruby18.escape_paren( str ) re = /\\\)/ str = str.gsub(re) { |s| ')'} re = /\\\(/ str = str.gsub(re) { |s| '('} re = /([\(\)])/ # Only match unescaped parens str.gsub(re) { |s| '\\' + s } end