Yes, and to get rid of the undefs, one can use the branch reset pattern: 
my @foo = split /(?|(A)|(B))/, "1A2B3";
use Data::Dumper; print Dumper \@foo;

[download]
$VAR1 = [
          '1',
          'A',
          '2',
          'B',
          '3'
        ];

[download]
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^2: Re-reading history from 2001 by choroba
in thread Re-reading history from 2001 / using a capture during split by talexb

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