From: Jérôme Benoit <jerome.benoit@piment-noir.org>
Date: Thu, 30 Nov 2017 20:27:30 +0000 (+0100)
Subject: print usage message if options are invalid.
X-Git-Url: https://git.piment-noir.org/?p=TP_AL_C.git;a=commitdiff_plain;h=5c1346dd169a32638aa70812aee0fc0dea3ccb70

print usage message if options are invalid.

Signed-off-by: Jérôme Benoit <jerome.benoit@piment-noir.org>
---

diff --git a/lexer/main.c b/lexer/main.c
index a187f8e..85adea0 100644
--- a/lexer/main.c
+++ b/lexer/main.c
@@ -91,6 +91,8 @@ int main(int argc, char **argv) {
                 /* invalid option */
                 pr_error("%s: option '-%c' is invalid: ignored\n",
                          argv[0], optopt);
+                /* print the help message for invalid options */
+                hflag = 1;
                 break;
         }
     }