From 02d54a783a5844de89b5afc4d45ae9906d9b54c2 Mon Sep 17 00:00:00 2001
From: neilpang <github@byneil.com>
Date: Mon, 31 Oct 2016 21:12:11 +0800
Subject: [PATCH] fix for idn on solaris

---
 acme.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acme.sh b/acme.sh
index 0575e0b6..d4e75804 100755
--- a/acme.sh
+++ b/acme.sh
@@ -504,7 +504,7 @@ _createkey() {
 _is_idn() {
   _is_idn_d="$1"
   _debug2 _is_idn_d "$_is_idn_d"
-  _idn_temp=$(printf "%s" "$_is_idn_d" | tr -d "[0-9a-zA-Z.,-]")
+  _idn_temp=$(printf "%s" "$_is_idn_d" | tr -d '[0-9]' | tr -d '[a-z]' | tr -d 'A-Z' | tr -d '.,-')
   _debug2 _idn_temp "$_idn_temp"
   [ "$_idn_temp" ]
 }