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parse-options: add new function "usage_msg_opt"

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This function can be used instead of "usage_with_options" when you
want to print an error message before the usage string.

It may be useful because:

if (condition)
	usage_msg_opt("condition is false", usage, opts);

is shorter than:

if (condition) {
	fprintf(stderr, "condition is false\n\n");
	usage_with_options(usage, opts);
}

and may be more consistent.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder
2009-02-02 06:12:58 +01:00
committed by Junio C Hamano
parent bebdd271ff
commit 451bb210f8
3 changed files with 13 additions and 1 deletions
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2
builtin-replace.c
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@ -121,7 +121,7 @@ int cmd_replace(int argc, const char **argv, const char *prefix)
OPT_END()
};
argc = parse_options(argc, argv, options, git_replace_usage, 0);
argc = parse_options(argc, argv, prefix, options, git_replace_usage, 0);
if (list && delete)
usage_with_options(git_replace_usage, options);