=over =item $LAST_PAREN_MATCH =item $+ X<$+> X<$LAST_PAREN_MATCH> The text matched by the last bracket of the last successful search pattern. This is useful if you don't know which one of a set of alternative patterns matched. For example: /Version: (.*)|Revision: (.*)/ && ($rev = $+); This variable is read-only and dynamically-scoped. Mnemonic: be positive and forward looking. =back