[PATCH v14 01/27] bisect--helper: use OPT_CMDMODE instead of OPT_BOOL

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`--next-all` is meant to be used as a subcommand to support multiple
"operation mode" though the current implementation does not contain any
other subcommand along side with `--next-all` but further commits will
include some more subcommands.

Helped-by: Johannes Schindelin <Johannes.Schindelin@xxxxxx>
Mentored-by: Lars Schneider <larsxschneider@xxxxxxxxx>
Mentored-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
Signed-off-by: Pranit Bauva <pranit.bauva@xxxxxxxxx>
---
 builtin/bisect--helper.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
index 3324229..8111c91 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect--helper.c
@@ -10,11 +10,11 @@ static const char * const git_bisect_helper_usage[] = {
 
 int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
 {
-	int next_all = 0;
+	enum { NEXT_ALL = 1 } cmdmode = 0;
 	int no_checkout = 0;
 	struct option options[] = {
-		OPT_BOOL(0, "next-all", &next_all,
-			 N_("perform 'git bisect next'")),
+		OPT_CMDMODE(0, "next-all", &cmdmode,
+			 N_("perform 'git bisect next'"), NEXT_ALL),
 		OPT_BOOL(0, "no-checkout", &no_checkout,
 			 N_("update BISECT_HEAD instead of checking out the current commit")),
 		OPT_END()
@@ -23,9 +23,14 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
 	argc = parse_options(argc, argv, prefix, options,
 			     git_bisect_helper_usage, 0);
 
-	if (!next_all)
+	if (!cmdmode)
 		usage_with_options(git_bisect_helper_usage, options);
 
-	/* next-all */
-	return bisect_next_all(prefix, no_checkout);
+	switch (cmdmode) {
+	case NEXT_ALL:
+		return bisect_next_all(prefix, no_checkout);
+	default:
+		die("BUG: unknown subcommand '%d'", cmdmode);
+	}
+	return 0;
 }

--
https://github.com/git/git/pull/287
--
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