Perl doesn't really make a distinction between "normal" blocks and subroutine blocks with regard to lexical scoping rules. You can even take and copy a reference to a subroutine that accesses lexicals in its outer scope that way. This is by design. See also perlfaq7 (what's a closure?), perlsub and perlref. 

use strict;

sub make_ref {
  my $name = shift;
  my $i = 99;
  return sub {
    print "ref $name: ",$i++,"\n";
  }
}

my $ref1 = make_ref("sub1");
my $ref2 = make_ref("sub2");

for (1 .. 10) {
  $ref1->();
  $ref2->() if $_ % 2 == 0;
}

[download]
output: 
ref sub1: 99
ref sub1: 100
ref sub2: 99
ref sub1: 101
ref sub1: 102
ref sub2: 100
ref sub1: 103
ref sub1: 104
ref sub2: 101
ref sub1: 105
ref sub1: 106
ref sub2: 102
ref sub1: 107
ref sub1: 108
ref sub2: 103

[download]
"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Using an "outer" lexical in a sub? by Joost
in thread Using an "outer" lexical in a sub? by cornballer

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