From a07693893601c8f9f7f65d07daa6db5c79afcb9d Mon Sep 17 00:00:00 2001 From: Thomas Voss Date: Sun, 7 Sep 2025 15:55:02 +0200 Subject: Make -h open the manual page --- main.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'main.c') diff --git a/main.c b/main.c index 7ddc3b9..688683e 100644 --- a/main.c +++ b/main.c @@ -10,6 +10,7 @@ #include #include #include +#include #include @@ -26,10 +27,10 @@ int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *); time_t syncs(time_t), syncm(time_t), synch(time_t); [[noreturn]] static void -usage(const char *argv0, int code) +usage(const char *argv0) { fprintf(stderr, _("Usage: %s [-h] [-i interval] [format]\n"), argv0); - exit(code); + exit(EXIT_FAILURE); } int @@ -55,7 +56,8 @@ main(int argc, char **argv) switch (opt) { case 'h': - usage(argv0, EXIT_SUCCESS); + execlp("man", "man", "1", argv0, nullptr); + err(EXIT_FAILURE, "execlp: man"); case 'i': if (strlen(optarg) == 1) { interval = *optarg; @@ -66,7 +68,7 @@ main(int argc, char **argv) _("invalid interval ‘%s’\nRead the %s(1) manual page for valid intervals"), optarg, argv0); default: - usage(argv0, EXIT_FAILURE); + usage(argv0); } } @@ -74,7 +76,7 @@ main(int argc, char **argv) argv += optind; if (argc > 1) - usage(argv0, EXIT_FAILURE); + usage(argv0); if (argc != 0) dfmt = argv[0]; -- cgit v1.2.3