[PATCH] Introduce entry point for launching add--interactive.

["Kristian Høgsberg" <krh@redhat.com>]

This refactors builtin-add.c a little to provide a unique entry point
for launching git add --interactive, which will be used by
builtin-commit too.  If we later want to make add --interactive a
builtin or change how it is launched, we just start from this function.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
---

Oh, oops, just one more change outside builtin-commit.c.  This is mostly
stylistic, but it seems reasonable to reasonable to have a well-defined
entry point for launcing git add --interactive.

 builtin-add.c |   14 +++++++++-----
 commit.h      |    2 ++
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/builtin-add.c b/builtin-add.c
index 7345479..7044d43 100644
--- a/builtin-add.c
+++ b/builtin-add.c
@@ -135,6 +135,13 @@ static int git_add_config(const char *var, const char *value)
 	return git_default_config(var, value);
 }
 
+int interactive_add(void)
+{
+	const char *argv[2] = { "add--interactive", NULL };
+
+	return run_command_v_opt(argv, RUN_GIT_CMD);
+}
+
 static struct lock_file lock_file;
 
 static const char ignore_warning[] =
@@ -154,12 +161,9 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 			add_interactive++;
 	}
 	if (add_interactive) {
-		const char *args[] = { "add--interactive", NULL };
-
-		if (add_interactive != 1 || argc != 2)
+		if (argc != 2)
 			die("add --interactive does not take any parameters");
-		execv_git_cmd(args);
-		exit(1);
+		exit(interactive_add());
 	}
 
 	git_config(git_add_config);
diff --git a/commit.h b/commit.h
index 9f640ba..64e1d4b 100644
--- a/commit.h
+++ b/commit.h
@@ -129,4 +129,6 @@ create_commit(const unsigned char *tree_sha1,
 	      const char *author_info, const char *committer_info,
 	      const char *message, int length);
 
+extern int interactive_add(void);
+
 #endif /* COMMIT_H */
-- 
1.5.2.GIT