bash: offer refs for 'git bisect start'

diff --git a/notes.c b/notes.c
index 7fd203560aaded5ebbd80d67c805df5a707aa60d..70d00135eb5b67cd6f21b416cde2ae4a1967fd0a 100644 (file)
--- a/notes.c
+++ b/notes.c
@@ -263,11 +263,13 @@ static int note_tree_consolidate(struct int_node *tree,
  * To remove a leaf_node:
  * Search to the tree location appropriate for the given leaf_node's key:
  * - If location does not hold a matching entry, abort and do nothing.
+ * - Copy the matching entry's value into the given entry.
  * - Replace the matching leaf_node with a NULL entry (and free the leaf_node).
  * - Consolidate int_nodes repeatedly, while walking up the tree towards root.
  */
-static void note_tree_remove(struct notes_tree *t, struct int_node *tree,
-               unsigned char n, struct leaf_node *entry)
+static void note_tree_remove(struct notes_tree *t,
+               struct int_node *tree, unsigned char n,
+               struct leaf_node *entry)
 {
        struct leaf_node *l;
        struct int_node *parent_stack[20];
@@ -282,6 +284,7 @@ static void note_tree_remove(struct notes_tree *t, struct int_node *tree,
                return; /* key mismatch, nothing to remove */
 
        /* we have found a matching entry */
+       hashcpy(entry->val_sha1, l->val_sha1);
        free(l);
        *p = SET_PTR_TYPE(NULL, PTR_TYPE_NULL);
 
@@ -1003,17 +1006,20 @@ void add_note(struct notes_tree *t, const unsigned char *object_sha1,
        note_tree_insert(t, t->root, 0, l, PTR_TYPE_NOTE, combine_notes);
 }
 
-void remove_note(struct notes_tree *t, const unsigned char *object_sha1)
+int remove_note(struct notes_tree *t, const unsigned char *object_sha1)
 {
        struct leaf_node l;
 
        if (!t)
                t = &default_notes_tree;
        assert(t->initialized);
-       t->dirty = 1;
        hashcpy(l.key_sha1, object_sha1);
        hashclr(l.val_sha1);
        note_tree_remove(t, t->root, 0, &l);
+       if (is_null_sha1(l.val_sha1)) // no note was removed
+               return 1;
+       t->dirty = 1;
+       return 0;
 }
 
 const unsigned char *get_note(struct notes_tree *t,