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# current output
directive: v0 v1 v2 v3 v4 v5
...
# desired output
directive: v0 v1 v2 v3
directive: v4 v5

print "directive: ";
for my $var (@vars) {
  print munge_var($var), " ";
}
print "\n";

my $v_count = 0;
print "directive: ";
...
  }
}
print "\n";

my $v_count = 0;
for my $var (@vars) {
...
  print &munge_var($var), " ";
}
print "\n";