In perl you can use http://search.cpan.org/~abigail/Regexp-Common-2010010201/lib/Regexp/Common/balanced.pm http://search.cpan.org/~abigail/Regexp-Common-2010010

In perl you can use http://search.cpan.org/~abigail/Regexp-Common-2010010201/lib/Regexp/Common/balanced.pm http://search.cpan.org/~abigail/Regexp-Common-2010010201/lib... The entire Regexp::Common namespace is basically a cookbook of the "right" way to use regular expressions. Worth stealing and porting to other languages...