[hackers] [sbase] basename: support -- || Mattias Andrée

[git]

commit 1d885159f2f7ff68ed75d92af584174a1208ca01
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Fri Jul 6 23:19:17 2018 +0200
Commit:     sin <s...@2f30.org>
CommitDate: Sat Jul 7 12:16:11 2018 +0100

    basename: support --
    
    POSIX-2017 clarifies that -- and normal option parsing must be supported.
    See EXAMPLES in basename(1p).
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

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();