F S UID        PID  PPID  C PRI  NI    CMD
040 S root        14     0  0  75   0    [kupdated]

##</code><code>##

content: |
  F S UID        PID  PPID  C PRI  NI    CMD
040 S root        14     0  0  75   0    [kupdated]

##</code><code>##

--- |2
  F S UID        PID  PPID  C PRI  NI CMD
040 S root        14     0  0  75   0 [kupdated]
040 S root        13     0  0  85   0 [bdflush]

##</code><code>##

YAML Error: Inconsistent indentation level
   Code: YAML_PARSE_ERR_INCONSISTENT_INDENTATION
   Line: 3
   Document: 1
 at /usr/local/lib/perl5/site_perl/5.8.8/YAML.pm line 33

##</code><code>##

use strict; use warnings;
use YAML qw( LoadFile Dump Load );
use Data::Dump qw( dump );

my $in = "  FOO\nBAR  BAZ\n";
my $out = Load( Dump( $in ) );
print dump( $in, $out );

------ output -----
(
    "  FOO\nBAR  BAZ\n",
    " FOO\nBAR BAZ\n",
)