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$ perl -Mstrict -wle'my @f = glob("*.mp3"); push @{$f[/ad/]}, $_ forea +ch @f;' Can't use string ("bar.mp3") as an ARRAY ref while "strict refs" in us +e at -e line 1.
$ perl -le '@f = glob("*.mp3"); push @{$f[/ad/]}, $_ foreach @f; use D +ata::Dumper; print Dumper(\@f, \@{"bad.mp3"}, \@{"bar.mp3"})' $VAR1 = [ ... $VAR3 = [ 'bad.mp3' ];