[PATCH v6 4/6] worktree: be clearer when "add" dwim-ery kicks in

Currently there is no indication in the "git worktree add" output that
a new branch was created.  This would be especially useful information
in the case where the dwim of "git worktree add <path>" kicks in, as the
user didn't explicitly ask for a new branch, but we create one for them.

Print some additional output showing that a branch was created and the
branch name to help the user.

This will also be useful in a subsequent commit, which introduces a new
kind of dwim-ery of checking out the branch if it exists instead of
refusing to create a new worktree in that case, and where it's nice to
tell the user which kind of dwim-ery kicked in.

Signed-off-by: Thomas Gummerer <redacted>
---
 builtin/worktree.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/builtin/worktree.c b/builtin/worktree.c
index cc94325886..f686ee1440 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c

@@ -444,6 +444,8 @@ static int add(int ac, const char **av, const char *prefix)
 
 	if (new_branch) {
 		struct child_process cp = CHILD_PROCESS_INIT;
+
+		fprintf_ln(stderr, _("Creating branch '%s'"), new_branch);
 		cp.git_cmd = 1;
 		argv_array_push(&cp.args, "branch");
 		if (new_branch_force)

-- 
2.16.1.78.ga2082135d8