Merge branch 'maint'

diff --git a/revision.c b/revision.c
index b6215cc72c77baa3f72d652e8457d3ace6e5f439..bf584483675ef55b2ed9b8d8586b92d5432759a5 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -15,9 +15,9 @@
 
 volatile show_early_output_fn_t show_early_output;
 
-static char *path_name(struct name_path *path, const char *name)
+char *path_name(const struct name_path *path, const char *name)
 {
-       struct name_path *p;
+       const struct name_path *p;
        char *n, *m;
        int nlen = strlen(name);
        int len = nlen + 1;
@@ -209,7 +209,7 @@ static struct commit *handle_commit(struct rev_info *revs, struct object *object
        }
 
        /*
-        * Tree object? Either mark it uniniteresting, or add it
+        * Tree object? Either mark it uninteresting, or add it
         * to the list of objects to look at later..
         */
        if (object->type == OBJ_TREE) {
@@ -256,10 +256,12 @@ static int everybody_uninteresting(struct commit_list *orig)
 
 /*
  * The goal is to get REV_TREE_NEW as the result only if the
- * diff consists of all '+' (and no other changes), and
- * REV_TREE_DIFFERENT otherwise (of course if the trees are
- * the same we want REV_TREE_SAME).  That means that once we
- * get to REV_TREE_DIFFERENT, we do not have to look any further.
+ * diff consists of all '+' (and no other changes), REV_TREE_OLD
+ * if the whole diff is removal of old data, and otherwise
+ * REV_TREE_DIFFERENT (of course if the trees are the same we
+ * want REV_TREE_SAME).
+ * That means that once we get to REV_TREE_DIFFERENT, we do not
+ * have to look any further.
  */
 static int tree_difference = REV_TREE_SAME;
 
@@ -268,22 +270,9 @@ static void file_add_remove(struct diff_options *options,
                    const unsigned char *sha1,
                    const char *fullpath)
 {
-       int diff = REV_TREE_DIFFERENT;
+       int diff = addremove == '+' ? REV_TREE_NEW : REV_TREE_OLD;
 
-       /*
-        * Is it an add of a new file? It means that the old tree
-        * didn't have it at all, so we will turn "REV_TREE_SAME" ->
-        * "REV_TREE_NEW", but leave any "REV_TREE_DIFFERENT" alone
-        * (and if it already was "REV_TREE_NEW", we'll keep it
-        * "REV_TREE_NEW" of course).
-        */
-       if (addremove == '+') {
-               diff = tree_difference;
-               if (diff != REV_TREE_SAME)
-                       return;
-               diff = REV_TREE_NEW;
-       }
-       tree_difference = diff;
+       tree_difference |= diff;
        if (tree_difference == REV_TREE_DIFFERENT)
                DIFF_OPT_SET(options, HAS_CHANGES);
 }
@@ -305,6 +294,8 @@ static int rev_compare_tree(struct rev_info *revs, struct commit *parent, struct
 
        if (!t1)
                return REV_TREE_NEW;
+       if (!t2)
+               return REV_TREE_OLD;
 
        if (revs->simplify_by_decoration) {
                /*
@@ -323,8 +314,7 @@ static int rev_compare_tree(struct rev_info *revs, struct commit *parent, struct
                if (!revs->prune_data)
                        return REV_TREE_SAME;
        }
-       if (!t2)
-               return REV_TREE_DIFFERENT;
+
        tree_difference = REV_TREE_SAME;
        DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES);
        if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "",
@@ -429,6 +419,7 @@ static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit)
                                p->parents = NULL;
                        }
                /* fallthrough */
+               case REV_TREE_OLD:
                case REV_TREE_DIFFERENT:
                        tree_changed = 1;
                        pp = &parent->next;