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-rw-r--r--libshouldbeinlibc/argp.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/libshouldbeinlibc/argp.h b/libshouldbeinlibc/argp.h
index dfd6303c..138e0533 100644
--- a/libshouldbeinlibc/argp.h
+++ b/libshouldbeinlibc/argp.h
@@ -230,6 +230,19 @@ error_t argp_parse (struct argp *argp, int argc, char **argv, unsigned flags,
ARGP_HELP_*. */
void argp_help (struct argp *argp, FILE *stream, unsigned flags);
+/* Output the standard usage message for ARGP to stderr and exit (1). */
+void argp_usage (struct argp *argp) __attribute__ ((noreturn));
+extern inline void argp_usage (struct argp *argp)
+{
+ argp_help (argp, stderr, ARGP_HELP_STD_USAGE);
+}
+
+/* Print the printf string FMT and following args, preceded by the program
+ name and `:', to stderr, and followed by a `Try ... --help' message. Then
+ exit (1). */
+extern void argp_error (struct argp *argp, char *fmt, ...)
+ __attribute__ ((noreturn, format (printf, 2, 3)));
+
/* Returns true if the option OPT is a valid short option. */
extern inline int
_option_is_short (struct argp_option *opt)