From dff6987bba8f9233f38d746967ed92348cdd9e2f Mon Sep 17 00:00:00 2001
From: ale5000 <15793015+ale5000-git@users.noreply.github.com>
Date: Fri, 1 Nov 2024 02:05:31 +0100
Subject: [PATCH] Update cmdline.sh

---
 cmdline.sh | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/cmdline.sh b/cmdline.sh
index 9b6a9141..a948da68 100755
--- a/cmdline.sh
+++ b/cmdline.sh
@@ -28,18 +28,8 @@ if test "${A5K_FUNCTIONS_INCLUDED:-false}" = 'false'; then
 
       if test -z "${MAIN_DIR-}"; then
         # shellcheck disable=SC3028,SC2128 # Intended: In POSIX sh, BASH_SOURCE is undefined / Expanding an array without an index only gives the first element
-        if MAIN_DIR="${BASH_SOURCE-}" && test -n "${MAIN_DIR}"; then
-          :
-        elif printf '%s\n' "${1}" | grep -q -m 1 -- 'cmdline.sh$' && MAIN_DIR="${1}"; then
-          :
-        else MAIN_DIR=''; fi
-echo '---'
-printf '%s\n' "${1}" || echo $?
-echo '---'
-printf '%s\n' "${1}" | grep -q -m 1 -- 'cmdline.sh$' || echo $?
-echo '---'
-dirname "${MAIN_DIR}" || echo $?
-echo '---'
+        if MAIN_DIR="${BASH_SOURCE-}" && test -n "${MAIN_DIR}"; then :; else MAIN_DIR="${1}"; fi
+        case "${MAIN_DIR}" in *'cmdline.sh') ;; *) MAIN_DIR='' ;; esac
 
         if test -n "${MAIN_DIR}" && MAIN_DIR="$(dirname "${MAIN_DIR}")" && MAIN_DIR="$(realpath "${MAIN_DIR}")"; then
           export MAIN_DIR