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print usage message if options are invalid.
[TP_AL_C.git]
/
lexer
/
main.c
diff --git
a/lexer/main.c
b/lexer/main.c
index a187f8ebb3fd88456aa01653418f00abd66e87c8..85adea092562d8c3c248b632060eff1933158b36 100644
(file)
--- 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;
}
}