From baf1778540068a33f61fb93e81046d5efcd5a520 Mon Sep 17 00:00:00 2001
From: Dirk <dirk@testssl.sh>
Date: Thu, 6 Apr 2017 11:27:40 +0200
Subject: [PATCH] mute the error message using bash3, see #697 (2.8)

---
 testssl.sh | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/testssl.sh b/testssl.sh
index 5e7ce59..8b9648f 100755
--- a/testssl.sh
+++ b/testssl.sh
@@ -518,13 +518,13 @@ strip_trailing_space() {
      echo "${1%"${1##*[![:space:]]}"}"
 }
 
-
-toupper() { echo -n "${1^^}" ;  }
-tolower() { echo -n "${1,,}" ;  }
-if ! toupper aaa 2>&1 >/dev/null; then
-     # older bash can't do this (MacOS X), even SLES 11, see #697
+if [[ "$BASH_VERSINFO" == 3 ]]; then
+     # older bash can do this only (MacOS X), even SLES 11, see #697
      toupper() { tr 'a-z' 'A-Z' <<< "$1"; }
      tolower() { tr 'A-Z' 'a-z' <<< "$1"; }
+else
+     toupper() { echo -n "${1^^}"; }
+     tolower() { echo -n "${1,,}"; }
 fi
 
 is_number() {