From c672fa347542075cebc3d03b480da26f0f6f3a56 Mon Sep 17 00:00:00 2001
From: Adel Kara Slimane <adel.ks@zegrapher.com>
Date: Mon, 7 Jun 2021 14:51:51 +0200
Subject: [PATCH] prepare: restrict user input to digits in _prompt_from_array
 (#261)

Signed-off-by: Adel KARA SLIMANE <adel.ks@zegrapher.com>
---
 linux-tkg-config/prepare | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/linux-tkg-config/prepare b/linux-tkg-config/prepare
index ca04003..eaed6df 100644
--- a/linux-tkg-config/prepare
+++ b/linux-tkg-config/prepare
@@ -63,7 +63,7 @@ _prompt_from_array() {
     if [[ -z "$REPLY" && -n "$_default_index" ]]; then
       _selected_index="$_default_index"
       break
-    elif [[ -n "$REPLY" && 0 -le "$REPLY" && "$REPLY" -le $_N ]]; then
+    elif [[ "$REPLY" =~ ^[0-9]+$ && 0 -le "$REPLY" && "$REPLY" -le $_N ]]; then
       _selected_index="$REPLY"
       break
     else