Just kidding, actually I worship $_, but today, I seek wisdom for a conondrum which rattles my faith in this most holy, virtuous, and altogether nifty variable. If $_ is a global variable, how does $_ become quasi-lexically scoped: 
my @l = (1,2,3,4);
my @m = qw(a b c d e f g h);
for (@l) {
  for (@m) { print " $_ " }
  print " : $_\n";
}

outputs

 a  b  c  d  e  f  g  h  : 1
 a  b  c  d  e  f  g  h  : 2
 a  b  c  d  e  f  g  h  : 3
 a  b  c  d  e  f  g  h  : 4

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How does $_ get its value reset from the last 'h' value of the inner loop back to the numeric values of the outer loop? I was under the impression that $_ (namely, $::_) was a global variable. So what's story? Thanks for enlightening me...

In reply to $_ haters anonymou by MeowChow

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