Fix help menu for xwayland-game-wrapper

xwayland-game-wrapper

@@ -15,7 +15,8 @@ function die {
 
 # print_help <argv[0]>
 function print_help {
-    printf 'usage: %s [OPTIONS...] <GAME> [ARGS...]\n' "${1}"
+    local exec_name="$(basename "${1}")"
+    printf 'usage: %s [OPTIONS...] <GAME> [ARGS...]\n' "${exec_name}"
     printf 'Run a game inside an Xwayland session with a window manager. This\n'
     printf 'is very similar to gamescope, except that there is a window\n'
     printf 'involved. The default window manager is OpenBox.\n'
@@ -64,7 +65,7 @@ function get_default_resolution {
 while getopts ':hw:r:d:' OPTOPT; do
     case "${OPTOPT}" in
          'h')
-             print_help "${1}"
+             print_help "${0}"
              ;;
          'w')
              window_manager="${OPTARG}"
@@ -84,7 +85,7 @@ while getopts ':hw:r:d:' OPTOPT; do
     esac
 done
 
-(( "${OPTIND}" > ${#} )) && print_help
+(( "${OPTIND}" > ${#} )) && print_help "${0}"
 shift $(( "${OPTIND}" - 1))
 
 {