You are viewing the version of this documentation from Perl 5.41.2. This is a development version of Perl.
$LAST_REGEXP_CODE_RESULT
$^R

The result of evaluation of the last successful (?{ code }) regular expression assertion (see perlre).

This variable may be written to, and its value is scoped normally, unlike most other regex variables.

This variable was added in Perl 5.005.