use strict;                      # line 1
use warnings;                    # line 2
                                 # line 3
my $value1 = 'foo';              # line 4
my $value2 = undef;              # line 5
                                 # line 6
if ( $value1 eq 'bar' ) {        # line 7
  print 'value1 is bar';         # line 8
                                 # line 9
} elsif ( $value2 eq 'bar' ) {   # line 10
  print 'value2 is bar';         # line 11
                                 # line 12
}                                # line 13