use strict;
use warnings;
local $/ = "\n##"; #record separator
while (<DATA>) {
chomp;
#print "\n<<<$_>>>\n"; # check input
my ($head,$rest) = /^ (.*?) \n (.*) $/xs;
# print record only if $rest contains alphanumerics
print "##$_" if $rest =~ /\w/;
}
__DATA__
## This gets stripped
## This doesn't
Because it contains this line
## More headers
blah blah
## This should not get stripped, but it does
### This should prevent it from getting stripped, but it doesn't
stuff
#### This should also not get stripped
##### But it does
C:/Perl_524/bin\perl.exe -w d:/exp/pm_headers.pl
## This doesn't
Because it contains this line
## More headers
blah blah
### This should prevent it from getting stripped, but it doesn't
stuff
Compilation finished at Wed Jul 22 17:59:57
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