sequencer: allow create_autostash to run silently

Add a silent parameter to create_autostash_internal and introduce
create_autostash_ref_silent so that callers can create an autostash
without printing the "Created autostash" message.  Use stderr for
the message when not silent.

Signed-off-by: Harald Nordgren <haraldnordgren@gmail.com>

Author: HaraldNordgren

sequencer.c

@@ -4632,7 +4632,8 @@ static enum todo_command peek_command(struct todo_list *todo_list, int offset)
 
 static void create_autostash_internal(struct repository *r,
 				      const char *path,
-				      const char *refname)
+				      const char *refname,
+				      int silent)
 {
 	struct strbuf buf = STRBUF_INIT;
 	struct lock_file lock_file = LOCK_INIT;
@@ -4677,7 +4678,8 @@ static void create_autostash_internal(struct repository *r,
 					&oid, null_oid(the_hash_algo), 0, UPDATE_REFS_DIE_ON_ERR);
 		}
 
-		printf(_("Created autostash: %s\n"), buf.buf);
+		if (!silent)
+			fprintf(stderr, _("Created autostash: %s\n"), buf.buf);
 		if (reset_head(r, &ropts) < 0)
 			die(_("could not reset --hard"));
 		discard_index(r->index);
@@ -4689,12 +4691,17 @@ static void create_autostash_internal(struct repository *r,
 
 void create_autostash(struct repository *r, const char *path)
 {
-	create_autostash_internal(r, path, NULL);
+	create_autostash_internal(r, path, NULL, 0);
 }
 
 void create_autostash_ref(struct repository *r, const char *refname)
 {
-	create_autostash_internal(r, NULL, refname);
+	create_autostash_internal(r, NULL, refname, 0);
+}
+
+void create_autostash_ref_silent(struct repository *r, const char *refname)
+{
+	create_autostash_internal(r, NULL, refname, 1);
 }
 
 static int apply_save_autostash_oid(const char *stash_oid, int attempt_apply)

sequencer.h

@@ -227,6 +227,7 @@ void commit_post_rewrite(struct repository *r,
 
 void create_autostash(struct repository *r, const char *path);
 void create_autostash_ref(struct repository *r, const char *refname);
+void create_autostash_ref_silent(struct repository *r, const char *refname);
 int save_autostash(const char *path);
 int save_autostash_ref(struct repository *r, const char *refname);
 int apply_autostash(const char *path);