diff -ur v8/inc_ut.py v9/inc_ut.py
--- v8/inc_ut.py	2020-10-09 23:21:17.000000000 +0900
+++ v9/inc_ut.py	2020-10-09 23:21:53.000000000 +0900
@@ -147,9 +147,13 @@
 					return True
 				r = read_str( path )
 				if r == False:
-					return False
+					break
 				paths.append( path )
 				return empty.new( s=cut_tail_nl( r ), opts=opts )
+
+		if '-q' in opts:
+			return True
+
 		return False
 
 	def exp_line(i, s):