===================================================================
RCS file: /cvs/docbook2mdoc/docbook2mdoc.c,v
retrieving revision 1.44
retrieving revision 1.45
diff -u -p -r1.44 -r1.45
--- docbook2mdoc/docbook2mdoc.c	2015/03/19 10:04:32	1.44
+++ docbook2mdoc/docbook2mdoc.c	2019/03/08 10:04:01	1.45
@@ -1,4 +1,4 @@
-/*	$Id: docbook2mdoc.c,v 1.44 2015/03/19 10:04:32 schwarze Exp $ */
+/*	$Id: docbook2mdoc.c,v 1.45 2019/03/08 10:04:01 schwarze Exp $ */
 /*
  * Copyright (c) 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -1654,9 +1654,10 @@ main(int argc, char *argv[])
 	argc -= optind;
 	argv += optind;
 
-	if (argc > 1)
-		return(EXIT_FAILURE);
-	else if (argc > 0)
+	if (argc > 1) {
+		fprintf(stderr, "%s: Too many arguments\n", argv[1]);
+		goto usage;
+	} else if (argc > 0)
 		fname = argv[0];
 
 	/* Read from stdin or a file. */
@@ -1685,6 +1686,6 @@ main(int argc, char *argv[])
 	return(rc ? EXIT_SUCCESS : EXIT_FAILURE);
 
 usage:
-	fprintf(stderr, "usage: %s [-W]\n", progname);
+	fprintf(stderr, "usage: %s [-W] [input_filename]\n", progname);
 	return(EXIT_FAILURE);
 }