From 78dc9f765f7a1209f79430d545eb25ec585a6769 Mon Sep 17 00:00:00 2001
From: Bruno Raoult <braoult@gmail.com>
Date: Tue, 8 Mar 2022 09:39:36 +0100
Subject: [PATCH] fix for yesno() function

---
 bash/dup-live-disk.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/bash/dup-live-disk.sh b/bash/dup-live-disk.sh
index 76f6b7f..a4e08bb 100755
--- a/bash/dup-live-disk.sh
+++ b/bash/dup-live-disk.sh
@@ -194,7 +194,7 @@ yesno() {
     printf -v reason "*** $1 [y/n/q] ? " "${@:2}"
 
     while true; do
-        if [[ ! -z $YESNO ]]; then
+        if [[ $YESNO =~ ^(yes|no)$ ]]; then
             answer="$YESNO"
             # shellcheck disable=SC2059
             printf "$reason%s\n" "$answer"
@@ -337,7 +337,7 @@ GRUB=ask                                          # install grub
 COPY=ask                                          # do FS copies
 MARIADB=ask                                       # stop/start mysql/mariadb
 MARIADBSTOPPED=no                                 # mysql stopped ?
-YESNO=ask                                         # default answer
+YESNO=                                            # default answer
 
 # short and long options
 SOPTS="a:c:df:g:hM:m:nr:y"