blame: improve diagnosis for "--reverse NEW"

diff --git a/notes-cache.c b/notes-cache.c
index c4e9bb7f6c0bde97c7c6d34094baa5ef7e318157..5dfc5cbd08e496748880bda6a67264c7d63f68b4 100644 (file)
--- a/notes-cache.c
+++ b/notes-cache.c
@@ -32,14 +32,14 @@ void notes_cache_init(struct notes_cache *c, const char *name,
                     const char *validity)
 {
        struct strbuf ref = STRBUF_INIT;
-       int flags = 0;
+       int flags = NOTES_INIT_WRITABLE;
 
        memset(c, 0, sizeof(*c));
        c->validity = xstrdup(validity);
 
        strbuf_addf(&ref, "refs/notes/%s", name);
        if (!notes_cache_match_validity(ref.buf, validity))
-               flags = NOTES_INIT_EMPTY;
+               flags |= NOTES_INIT_EMPTY;
        init_notes(&c->tree, ref.buf, combine_notes_overwrite, flags);
        strbuf_release(&ref);
 }
@@ -49,7 +49,8 @@ int notes_cache_write(struct notes_cache *c)
        unsigned char tree_sha1[20];
        unsigned char commit_sha1[20];
 
-       if (!c || !c->tree.initialized || !c->tree.ref || !*c->tree.ref)
+       if (!c || !c->tree.initialized || !c->tree.update_ref ||
+           !*c->tree.update_ref)
                return -1;
        if (!c->tree.dirty)
                return 0;
@@ -59,8 +60,8 @@ int notes_cache_write(struct notes_cache *c)
        if (commit_tree(c->validity, strlen(c->validity), tree_sha1, NULL,
                        commit_sha1, NULL, NULL) < 0)
                return -1;
-       if (update_ref("update notes cache", c->tree.ref, commit_sha1, NULL,
-                      0, UPDATE_REFS_QUIET_ON_ERR) < 0)
+       if (update_ref("update notes cache", c->tree.update_ref, commit_sha1,
+                      NULL, 0, UPDATE_REFS_QUIET_ON_ERR) < 0)
                return -1;
 
        return 0;