Improve handling of options allowed for "lb" before the sub-command

frontend/lb

@@ -19,25 +19,26 @@ DESCRIPTION="Utility to build live systems"
 HELP=""
 USAGE="lb {clean|config|build}"
 
-case "${1}" in
+# This bits of code relies on the fact that we only accept
-	-h|--help)
+# options without values before the real command.
-		if [ $(which man) ]; then
+GLOBAL_ARGS=""
-			man lb
+while true; do
-		else
+	case $1 in
-			Usage
+		-*)
-		fi
+			GLOBAL_ARGS="${GLOBAL_ARGS:+$GLOBAL_ARGS }$1"
-		exit 0
+			shift
-		;;
+			;;
+		*)
+			break
+			;;
+	esac
+done
+Arguments $GLOBAL_ARGS
 
-	""|-u|--usage)
+if [ $# = 0 ]; then
-		Usage
+	Echo_error "Missing sub-command"
-		;;
+	Usage --fail
-
+fi
-	-v|--version)
-		echo "${VERSION}"
-		exit 0
-		;;
-esac
 
 COMMAND="${1}"
 shift