Print which option was in error along with usage message

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Gaetan Nadon <memsize@videotron.ca>

1 files changed, 2 insertions, 0 deletions

diff --git a/bdftopcf.c b/bdftopcf.c
index 1b24aa1..2208fee 100644
--- a/bdftopcf.c
+++ b/bdftopcf.c
@@ -145,6 +145,8 @@ main(int argc, char *argv[])
         else {
             if (input_name) {
  usage:
+                fprintf(stderr, "%s: invalid option '%s'\n",
+                        program_name, argv[0]);
                 fprintf(stderr,
                         "usage: %s [-p#] [-u#] [-m] [-l] [-M] [-L] [-t] [-i] [-o pcf file] [bdf file]\n"
                         "       where # for -p is 1, 2, 4, or 8\n"