rev-parse: make "whatchanged -- git-fetch-script" work again.

diff --git a/rev-list.c b/rev-list.c
index e17f928061250c24465e1b96f89a18acb98a748c..e00e6fc76df8236c925e904fa270a2293099d6cf 100644 (file)
--- a/rev-list.c
+++ b/rev-list.c
@@ -350,7 +350,8 @@ static int count_distance(struct commit_list *entry)
 
                if (commit->object.flags & (UNINTERESTING | COUNTED))
                        break;
-               nr++;
+               if (!paths || (commit->object.flags & TREECHANGE))
+                       nr++;
                commit->object.flags |= COUNTED;
                p = commit->parents;
                entry = p;
@@ -362,6 +363,7 @@ static int count_distance(struct commit_list *entry)
                        }
                }
        }
+
        return nr;
 }
 
@@ -382,15 +384,20 @@ static struct commit_list *find_bisection(struct commit_list *list)
        nr = 0;
        p = list;
        while (p) {
-               nr++;
+               if (!paths || (p->item->object.flags & TREECHANGE))
+                       nr++;
                p = p->next;
        }
        closest = 0;
        best = list;
 
-       p = list;
-       while (p) {
-               int distance = count_distance(p);
+       for (p = list; p; p = p->next) {
+               int distance;
+
+               if (paths && !(p->item->object.flags & TREECHANGE))
+                       continue;
+
+               distance = count_distance(p);
                clear_distance(list);
                if (nr - distance < distance)
                        distance = nr - distance;
@@ -398,7 +405,6 @@ static struct commit_list *find_bisection(struct commit_list *list)
                        best = p;
                        closest = distance;
                }
-               p = p->next;
        }
        if (best)
                best->next = NULL;
@@ -838,13 +844,18 @@ int main(int argc, const char **argv)
                        arg++;
                        limited = 1;
                }
-               if (get_sha1(arg, sha1) < 0)
+               if (get_sha1(arg, sha1) < 0) {
+                       struct stat st;
+                       if (lstat(arg, &st) < 0)
+                               die("'%s': %s", arg, strerror(errno));
                        break;
+               }
                commit = get_commit_reference(arg, sha1, flags);
                handle_one_commit(commit, &list);
        }
 
-       if (!list)
+       if (!list &&
+           (!(tag_objects||tree_objects||blob_objects) && !pending_objects))
                usage(rev_list_usage);
 
        paths = get_pathspec(prefix, argv + i);