#! perl -slw
use strict;

$/ = ''; # paragraph mode

print "'$_'" while <DATA>;

__DATA__
abc:
  asdf1
  asdf2

def:
  asdf3

ghi:
  asdf4
  asdf5


##</code><code>##

c:\test>junk
'abc:
  asdf1
  asdf2

'
'def:
  asdf3

'
'ghi:
  asdf4
  asdf5

'