# this is just a proof of concept toy. class RegOr def initialize(re1, re2) @re1 = re1 @re2 = re2 end def =~ (str) @re1 =~ str or @re2 =~ str end end class RegAnd def initialize(re1, re2) @re1 = re1 @re2 = re2 end def =~ (str) @re1 =~ str and @re2 =~ str end end class Regexp def |(other) RegOr.new(self, other) end def &(other) RegAnd.new(self, other) end end if __FILE__ == $0 p "abc" =~ /b/|/c/ p "abc" =~ /b/&/c/ end