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git/builtin
Junio C Hamano a36a822d7d oddballs: send usage() help text to standard output
Using the show_usage_if_asked() helper we introduced earlier, fix
callers of usage() that want to show the help text when explicitly
asked by the end-user.  The help text now goes to the standard
output stream for them.

The callers in this step are oddballs in that their invocations of
usage() are *not* guarded by

	if (argc == 2 && !strcmp(argv[1], "-h")
		usage(...);

There are (unnecessarily) being clever ones that do things like

	if (argc != 2 || !strcmp(argv[1], "-h")
		usage(...);

to say "I know I take only one argument, so argc != 2 is always an
error regardless of what is in argv[].  Ah, by the way, even if argc
is 2, "-h" is a request for usage text, so we do the same".

Some like "git var -h" just do not treat "-h" any specially, and let
it take the same error code paths as a parameter error.

Now we cannot do the same, so these callers are rewrittin to do the
show_usage_and_exit_if_asked() first and then handle the usage error
the way they used to.

Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-01-17 13:30:03 -08:00
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