From a6a8d3fd2757d4147deae2409d7de02fdd795eb0 Mon Sep 17 00:00:00 2001
From: Hannes Laimer <h.laimer@proxmox.com>
Date: Fri, 23 Jun 2023 08:13:52 +0200
Subject: [PATCH] boot tool: fix grep misinterpretation of arguments starting
 with a hyphen

`proxmox-boot-tool kernel remove --help`, or any version agrument
that started with a '-', lead to the grep usage message being written
into /etc/kernel/proxmox-boot-manual-kernels. The problem was `grep`
interpreted the kernel version agrument as an option since it starts
with '-'.
---
 src/bin/proxmox-boot-tool | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/bin/proxmox-boot-tool b/src/bin/proxmox-boot-tool
index 913b0f6..302974b 100755
--- a/src/bin/proxmox-boot-tool
+++ b/src/bin/proxmox-boot-tool
@@ -27,7 +27,7 @@ _remove_entry_from_list_file() {
 	fi
 
 	if [ -e "$file" ]; then
-		grep -vFx "$entry" "$file" > "$file.new" || true
+		grep -vFx -- "$entry" "$file" > "$file.new" || true
 		mv "$file.new" "$file"
 	else
 		echo "'$file' does not exist.."
@@ -279,7 +279,7 @@ remove_kernel() {
 		exit 1
 	fi
 
-	if grep -sqFx "$ver" "$MANUAL_KERNEL_LIST"; then
+	if grep -sqFx -- "$ver" "$MANUAL_KERNEL_LIST"; then
 		_remove_entry_from_list_file "$MANUAL_KERNEL_LIST" "$ver"
 		echo "Removed kernel '$ver' from manual kernel list. Use the 'refresh' command to update the ESPs."
 	else