The --octopus, --independent and --is-ancestor are mutually
exclusive command modes (in addition to not giving any of these
options), so represent them as such using the recent OPT_CMDMODE
facility available since 11588263 (parse-options: add OPT_CMDMODE(),
2013-07-30), which is in v1.8.4-82-g366b80b. --all is compatible
only with plain vanilla mode and --octopus mode, and the minimum
number of arguments the command takes depends on the command modes,
so these are now separately checked in each command mode.
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
builtin/merge-base.c | 38 ++++++++++++++++++++++----------------
1 file changed, 22 insertions(+), 16 deletions(-)
diff --git a/builtin/merge-base.c b/builtin/merge-base.c
index e88eb93..d39c910 100644
--- a/builtin/merge-base.c
+++ b/builtin/merge-base.c
@@ -90,32 +90,38 @@ int cmd_merge_base(int argc, const char **argv, const char *prefix)
struct commit **rev;
int rev_nr = 0;
int show_all = 0;
- int octopus = 0;
- int reduce = 0;
- int is_ancestor = 0;
+ int cmdmode = 0;
struct option options[] = {
OPT_BOOL('a', "all", &show_all, N_("output all common ancestors")),
- OPT_BOOL(0, "octopus", &octopus, N_("find ancestors for a single n-way merge")),
- OPT_BOOL(0, "independent", &reduce, N_("list revs not reachable from others")),
- OPT_BOOL(0, "is-ancestor", &is_ancestor,
- N_("is the first one ancestor of the other?")),
+ OPT_CMDMODE(0, "octopus", &cmdmode,
+ N_("find ancestors for a single n-way merge"), 'o'),
+ OPT_CMDMODE(0, "independent", &cmdmode,
+ N_("list revs not reachable from others"), 'r'),
+ OPT_CMDMODE(0, "is-ancestor", &cmdmode,
+ N_("is the first one ancestor of the other?"), 'a'),
OPT_END()
};
git_config(git_default_config, NULL);
argc = parse_options(argc, argv, prefix, options, merge_base_usage, 0);
- if (!octopus && !reduce && argc < 2)
- usage_with_options(merge_base_usage, options);
- if (is_ancestor && (show_all || octopus || reduce))
- die("--is-ancestor cannot be used with other options");
- if (is_ancestor)
+
+ if (cmdmode == 'a') {
+ if (argc < 2)
+ usage_with_options(merge_base_usage, options);
+ if (show_all)
+ die("--is-ancestor cannot be used with --all");
return handle_is_ancestor(argc, argv);
- if (reduce && (show_all || octopus))
- die("--independent cannot be used with other options");
+ }
- if (octopus || reduce)
- return handle_octopus(argc, argv, reduce, show_all);
+ if (cmdmode == 'r' && show_all)
+ die("--independent cannot be used with --all");
+
+ if (cmdmode == 'r' || cmdmode == 'o')
+ return handle_octopus(argc, argv, cmdmode == 'r', show_all);
+
+ if (argc < 2)
+ usage_with_options(merge_base_usage, options);
rev = xmalloc(argc * sizeof(*rev));
while (argc-- > 0)
--
1.8.4.1-799-g1c32b8d
--
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