diff options
| author | Karel Zak | 2016-12-19 13:13:34 +0100 |
|---|---|---|
| committer | Karel Zak | 2016-12-19 13:13:34 +0100 |
| commit | 677ec86cef983a106c6e5d175f44b125858c3016 (patch) | |
| tree | b993641faa65700acd62768da189a103da4c40ec /include | |
| parent | include/c.h: add errtryhelp() (diff) | |
| download | kernel-qcow2-util-linux-677ec86cef983a106c6e5d175f44b125858c3016.tar.gz kernel-qcow2-util-linux-677ec86cef983a106c6e5d175f44b125858c3016.tar.xz kernel-qcow2-util-linux-677ec86cef983a106c6e5d175f44b125858c3016.zip | |
Use --help suggestion on invalid option
The current default is to print all usage() output. This is overkill
in many case.
Addresses: https://github.com/karelzak/util-linux/issues/338
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/c.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/c.h b/include/c.h index bf11d61ac..3f47dbdcb 100644 --- a/include/c.h +++ b/include/c.h @@ -212,6 +212,12 @@ errmsg(char doexit, int excode, char adderr, const char *fmt, ...) exit(eval); \ }) +#define errtryh(eval) __extension__ ({ \ + fprintf(stderr, _("Try '%s -h' for more information.\n"), \ + program_invocation_short_name); \ + exit(eval); \ +}) + static inline __attribute__((const)) int is_power_of_2(unsigned long num) { |