TIMTOWTDI. I would never use a for loop for this, but it might well be a simplification of what in earlier versions warranted the for loop.

$buff .= $_ for  "\n", '  ' x ( $level - 1 ), shift @pre_push;

=>

{   my $indent = " " x ($level - 1);
    $buf .= "\n" . $indent . shift @pre_push;
    }

or

$buff .= "\n" . (" " x ($level - 1)) . shift @pre_push;

or

$buff .= join "" => "\n", " " x ($level - 1), shift @pre_push;

or

$buff .= join ((" " x ($level - 1)) => "\n", shift @pre_push);

or

...

[download]

Enjoy, Have FUN! H.Merijn

In reply to Re^2: How do I read this line of code? by Tux
in thread How do I read this line of code? by pmarcoen

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