From c4bf5eef73aa749393101f50683e4391ac8e46d2 Mon Sep 17 00:00:00 2001
From: neilpang <github@byneil.com>
Date: Wed, 8 Mar 2017 21:51:25 +0800
Subject: [PATCH] add _upper_case and _lower_case

---
 acme.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/acme.sh b/acme.sh
index eb1a8969..699ea268 100755
--- a/acme.sh
+++ b/acme.sh
@@ -299,6 +299,16 @@ _secure_debug3() {
   fi
 }
 
+_upper_case() {
+  # shellcheck disable=SC2018,SC2019
+  tr 'a-z' 'A-Z'
+}
+
+_lower_case() {
+  # shellcheck disable=SC2018,SC2019
+  tr 'A-Z' 'a-z'
+}
+
 _startswith() {
   _str="$1"
   _sub="$2"