From 306024d7b0890ea7871bb0a6f79b890c88ba9d8e Mon Sep 17 00:00:00 2001
From: Santiago Lo Coco <santilococo.01@gmail.com>
Date: Thu, 20 Jan 2022 00:13:42 -0300
Subject: [PATCH] Add yes/no validation

---
 scripts/common.sh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/scripts/common.sh b/scripts/common.sh
index f18ff4d..41cc900 100755
--- a/scripts/common.sh
+++ b/scripts/common.sh
@@ -121,7 +121,13 @@ usePlainText() {
         printLine
         printf '\n%s' "[y/n] "
         read -n 1 -r -s readVar
-        return $([[ "$readVar" =~ ^[Yy]$ ]])
+        while echo "$readVar" | grep -vqE '[yYnN]'; do
+            printf "\033[A"
+            printf '\n%s' "You need to type 'y' or 'n'"
+            printf '\n%s' "[y/n] "
+            read -n 1 -r -s readVar
+        done
+        [[ "$readVar" =~ ^[Yy]$ ]] && return 0 || return 1
     elif [ $msgbox = true ]; then
         printLine
         printf '\n%s' "Press a key to continue... "