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use warnings; use strict; ... $ins1 =~ /[\d+-]+(?: \w ([\d+-]+)(?{print \@inserts, "\n"; push @i +nserts, $1}))*/g; print "\n" . join ' ', @inserts; }
at the beginning: ARRAY(0x189126c) ... ARRAY(0x189126c) ARRAY(0x189126c) ARRAY(0x189126c)