From 1d885159f2f7ff68ed75d92af584174a1208ca01 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mattias=20Andr=C3=A9e?= <maandree@kth.se>
Date: Fri, 6 Jul 2018 23:19:17 +0200
Subject: [PATCH] basename: support --
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POSIX-2017 clarifies that -- and normal option parsing must be supported.
See EXAMPLES in basename(1p).

Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 basename.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/basename.c b/basename.c
index d211799..94a2848 100644
--- a/basename.c
+++ b/basename.c
@@ -17,7 +17,10 @@ main(int argc, char *argv[])
 	ssize_t off;
 	char *p;
 
-	argv0 = *argv, argv0 ? (argc--, argv++) : (void *)0;
+	ARGBEGIN {
+	default:
+		usage();
+	} ARGEND
 
 	if (argc != 1 && argc != 2)
 		usage();