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in reply to Re^2: Perl Complains of Nested Quantifiers
in thread Perl Complains of Nested Quantifiers

A concern was expressed about "catastrophic backtracking." I'm curious about ... whether your solution would satisfactorily avert it.

It would not. AFAIU, possessive quantifiers like  ++ *+ ?+ {n,m}+ are just special, limited cases of the general  (?>...) atomic grouping. See example below. 

>perl -wMstrict -le
"my $s = 'foobazbazbaz foobazbazbaz';
 print 'match 1'
   if $s =~ m{ foo (?> (?:baz)+) baz }xms;
 print 'match 2'
   if $s =~ m{ foo (?> .* baz) baz }xms;
"

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