How has support for atomic groups and possessive quantifiers changed across recent Perl versions?

Support for atomic groups and possessive quantifiers in Perl has evolved across recent versions, enhancing regular expression efficiency by preventing backtracking in certain scenarios. Atomic groups are defined using the syntax '(?>...)', while possessive quantifiers include '*+', '++', '?+', and '{n,m}+'. These additions serve to improve performance in complex pattern matching tasks.

Keywords: Perl, atomic groups, possessive quantifiers, regular expressions, performance, backtracking
Description: Explore how recent Perl versions have improved support for atomic groups and possessive quantifiers in regular expressions, enabling more efficient text processing and pattern matching.
// Example of using atomic group and possessive quantifier in Perl $string = "aaaabbbbcccc"; if ($string =~ /(?>a+)+b+/) { print "Match found!"; } else { print "No match."; }

Keywords: Perl atomic groups possessive quantifiers regular expressions performance backtracking

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