From 5845f7de8165f35829e49acd41f6a2fc3698f221 Mon Sep 17 00:00:00 2001
From: Richard Levitte <levitte@openssl.org>
Date: Fri, 16 Feb 2018 23:28:31 +0100
Subject: [PATCH] OpenSSL::Test::quotify: put quotes around empty arguments

Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5396)
---
 util/perl/OpenSSL/Test.pm | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/util/perl/OpenSSL/Test.pm b/util/perl/OpenSSL/Test.pm
index e363a48473..ad77896c85 100644
--- a/util/perl/OpenSSL/Test.pm
+++ b/util/perl/OpenSSL/Test.pm
@@ -760,12 +760,13 @@ I<This must never ever be done on VMS.>
 sub quotify {
     # Unix setup (default if nothing else is mentioned)
     my $arg_formatter =
-	sub { $_ = shift; /\s|[\{\}\\\$\[\]\*\?\|\&:;<>]/ ? "'$_'" : $_ };
+	sub { $_ = shift;
+	      ($_ eq '' || /\s|[\{\}\\\$\[\]\*\?\|\&:;<>]/) ? "'$_'" : $_ };
 
     if ( $^O eq "VMS") {	# VMS setup
 	$arg_formatter = sub {
 	    $_ = shift;
-	    if (/\s|["[:upper:]]/) {
+	    if ($_ eq '' || /\s|["[:upper:]]/) {
 		s/"/""/g;
 		'"'.$_.'"';
 	    } else {
@@ -775,7 +776,7 @@ sub quotify {
     } elsif ( $^O eq "MSWin32") { # MSWin setup
 	$arg_formatter = sub {
 	    $_ = shift;
-	    if (/\s|["\|\&\*\;<>]/) {
+	    if ($_ eq '' || /\s|["\|\&\*\;<>]/) {
 		s/(["\\])/\\$1/g;
 		'"'.$_.'"';
 	    } else {
-- 
2.25.1