From 7e54497f8889427cfaad5893b265309a7b60dfc7 Mon Sep 17 00:00:00 2001
From: Marc-Aurèle Brothier <m@brothier.org>
Date: Sun, 21 Jan 2018 22:24:20 +0100
Subject: Use a compatible to lowercase syntax for bash < 4 (#41)

---
 otp.bash | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/otp.bash b/otp.bash
index 6a28fbd..16d0ef4 100755
--- a/otp.bash
+++ b/otp.bash
@@ -317,7 +317,7 @@ cmd_otp_code() {
   case "$otp_type" in
     totp)
       cmd="$OATH -b --totp"
-      [[ -n "$otp_algorithm" ]] && cmd+="=${otp_algorithm,,}"
+      [[ -n "$otp_algorithm" ]] && cmd+=$(echo "=${otp_algorithm}"|tr "[:upper:]" "[:lower:]")
       [[ -n "$otp_period" ]] && cmd+=" --time-step-size=$otp_period"s
       [[ -n "$otp_digits" ]] && cmd+=" --digits=$otp_digits"
       cmd+=" $otp_secret"
-- 
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