Print which arguments were unknown before giving usage message

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/xmore.c b/xmore.c
index ed6be29..4ff53f4 100644
--- a/xmore.c
+++ b/xmore.c
@@ -146,6 +146,11 @@ int main( int argc, char *argv[] )
 
   if (argc != 2)
   {
+    fputs("Unknown argument(s):", stderr);
+    for (int i = 1; i < argc; i++) {
+      fprintf(stderr, " %s", argv[i]);
+    }
+    fputs("\n\n", stderr);
     printf("usage: %s [ x options ] filename\n", argv[0]);
     exit(EXIT_FAILURE);
   }