Add fix/workaround for corrupted PDF files attached as

quoted-printable encoded MIME attachments by some popular
email-client versions on windows.

mail/p5-MIME-Tools/files/patch-Decoder-qpdecode-pdf

@@ -0,0 +1,41 @@
+--- lib/MIME/Decoder/QuotedPrint.pm.orig	Tue Aug 31 17:02:43 2004
++++ lib/MIME/Decoder/QuotedPrint.pm	Tue Aug 31 17:02:38 2004
+@@ -85,9 +85,37 @@
+ #
+ sub decode_it {
+     my ($self, $in, $out) = @_;
++    my $init = 0;
++    my $badpdf = 0;
+ 
+     while (defined($_ = $in->getline)) {
+-	$out->print(decode_qp($_));
++	#
++	# Dirty hack to fix QP-Encoded PDFs from MS-Outlook.
++	#
++	# Check if we have a PDF file and if it has been encoded
++	# on Windows. Unix encoded files are fine. If we have
++	# one encoded CR after the PDF init string but are missing
++	# an encoded CR before the newline this means the PDF is broken.
++	#
++	if (!$init) {
++		$init = 1;
++		if ($_ =~ /^%PDF-[0-9\.]+=0D/ && $_ !~ /(?!=0D)\n$/) {
++			$badpdf = 1;
++		}
++	}
++	#
++	# Decode everything with decode_qp() except corrupted PDFs.
++	#
++	if ($badpdf) {
++		my $output = $_;
++		$output =~ s/[ \t]+?(\r?\n)/$1/g;
++		$output =~ s/=\r?\n//g;
++		$output =~ s/(^$|[^\r])\n\Z/$1\r\n/;
++		$output =~ s/=([\da-fA-F]{2})/pack("C", hex($1))/ge;
++		$out->print($output);
++	} else {
++		$out->print(decode_qp($output));
++	}
+     }
+     1;
+ }