[PATCH v4 6/9] checkout: pass the "num_matches" up to callers

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Pass the previously added "num_matches" struct value up to the callers
of unique_tracking_name(). This will allow callers to optionally print
better error messages in a later change.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 builtin/checkout.c | 16 +++++++++++-----
 builtin/worktree.c |  4 ++--
 checkout.c         |  5 ++++-
 checkout.h         |  3 ++-
 4 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 2e1d2376d2..ec7cf93b4a 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -239,7 +239,8 @@ static int checkout_merged(int pos, const struct checkout *state)
 }
 
 static int checkout_paths(const struct checkout_opts *opts,
-			  const char *revision)
+			  const char *revision,
+			  int *dwim_remotes_matched)
 {
 	int pos;
 	struct checkout state = CHECKOUT_INIT;
@@ -878,7 +879,8 @@ static int parse_branchname_arg(int argc, const char **argv,
 				int dwim_new_local_branch_ok,
 				struct branch_info *new_branch_info,
 				struct checkout_opts *opts,
-				struct object_id *rev)
+				struct object_id *rev,
+				int *dwim_remotes_matched)
 {
 	struct tree **source_tree = &opts->source_tree;
 	const char **new_branch = &opts->new_branch;
@@ -972,7 +974,8 @@ static int parse_branchname_arg(int argc, const char **argv,
 			recover_with_dwim = 0;
 
 		if (recover_with_dwim) {
-			const char *remote = unique_tracking_name(arg, rev);
+			const char *remote = unique_tracking_name(arg, rev,
+								  dwim_remotes_matched);
 			if (remote) {
 				*new_branch = arg;
 				arg = remote;
@@ -1109,6 +1112,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 	struct branch_info new_branch_info;
 	char *conflict_style = NULL;
 	int dwim_new_local_branch = 1;
+	int dwim_remotes_matched = 0;
 	struct option options[] = {
 		OPT__QUIET(&opts.quiet, N_("suppress progress reporting")),
 		OPT_STRING('b', NULL, &opts.new_branch, N_("branch"),
@@ -1219,7 +1223,8 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 			opts.track == BRANCH_TRACK_UNSPECIFIED &&
 			!opts.new_branch;
 		int n = parse_branchname_arg(argc, argv, dwim_ok,
-					     &new_branch_info, &opts, &rev);
+					     &new_branch_info, &opts, &rev,
+					     &dwim_remotes_matched);
 		argv += n;
 		argc -= n;
 	}
@@ -1262,7 +1267,8 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 
 	UNLEAK(opts);
 	if (opts.patch_mode || opts.pathspec.nr)
-		return checkout_paths(&opts, new_branch_info.name);
+		return checkout_paths(&opts, new_branch_info.name,
+				      &dwim_remotes_matched);
 	else
 		return checkout_branch(&opts, &new_branch_info);
 }
diff --git a/builtin/worktree.c b/builtin/worktree.c
index 5c7d2bb180..a763dbdccb 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -412,7 +412,7 @@ static const char *dwim_branch(const char *path, const char **new_branch)
 	if (guess_remote) {
 		struct object_id oid;
 		const char *remote =
-			unique_tracking_name(*new_branch, &oid);
+			unique_tracking_name(*new_branch, &oid, NULL);
 		return remote;
 	}
 	return NULL;
@@ -484,7 +484,7 @@ static int add(int ac, const char **av, const char *prefix)
 
 		commit = lookup_commit_reference_by_name(branch);
 		if (!commit) {
-			remote = unique_tracking_name(branch, &oid);
+			remote = unique_tracking_name(branch, &oid, NULL);
 			if (remote) {
 				new_branch = branch;
 				branch = remote;
diff --git a/checkout.c b/checkout.c
index 7ce5306bc7..c578782baa 100644
--- a/checkout.c
+++ b/checkout.c
@@ -23,12 +23,15 @@ static int check_tracking_name(struct remote *remote, void *cb_data)
 	return 0;
 }
 
-const char *unique_tracking_name(const char *name, struct object_id *oid)
+const char *unique_tracking_name(const char *name, struct object_id *oid,
+				 int *dwim_remotes_matched)
 {
 	struct tracking_name_data cb_data = TRACKING_NAME_DATA_INIT;
 	cb_data.src_ref = xstrfmt("refs/heads/%s", name);
 	cb_data.dst_oid = oid;
 	for_each_remote(check_tracking_name, &cb_data);
+	if (dwim_remotes_matched)
+		*dwim_remotes_matched = cb_data.num_matches;
 	free(cb_data.src_ref);
 	if (cb_data.num_matches == 1)
 		return cb_data.dst_ref;
diff --git a/checkout.h b/checkout.h
index 2decb9b820..4e518c801a 100644
--- a/checkout.h
+++ b/checkout.h
@@ -18,6 +18,7 @@ struct tracking_name_data {
  * exists, NULL otherwise.
  */
 extern const char *unique_tracking_name(const char *name,
-					struct object_id *oid);
+					struct object_id *oid,
+					int *dwim_remotes_matched);
 
 #endif /* CHECKOUT_H */
-- 
2.17.0.290.gded63e768a




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