xdiff: PATIENCE/HISTOGRAM are not independent option bits

diff --git a/unpack-trees.c b/unpack-trees.c
index 237aed8c766638c55d8d6b870c86ef2ad13a74d3..8282f5e5f6c615460e1c340d66e395c2d57aef73 100644 (file)
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1091,6 +1091,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
                 */
                mark_new_skip_worktree(o->el, &o->result, CE_ADDED, CE_SKIP_WORKTREE | CE_NEW_SKIP_WORKTREE);
 
+               ret = 0;
                for (i = 0; i < o->result.cache_nr; i++) {
                        struct cache_entry *ce = o->result.cache[i];
 
@@ -1103,19 +1104,30 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
                         * correct CE_NEW_SKIP_WORKTREE
                         */
                        if (ce->ce_flags & CE_ADDED &&
-                           verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o))
-                                       return -1;
+                           verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o)) {
+                               if (!o->show_all_errors)
+                                       goto return_failed;
+                               ret = -1;
+                       }
 
                        if (apply_sparse_checkout(ce, o)) {
+                               if (!o->show_all_errors)
+                                       goto return_failed;
                                ret = -1;
-                               goto done;
                        }
                        if (!ce_skip_worktree(ce))
                                empty_worktree = 0;
 
                }
+               if (ret < 0)
+                       goto return_failed;
+               /*
+                * Sparse checkout is meant to narrow down checkout area
+                * but it does not make sense to narrow down to empty working
+                * tree. This is usually a mistake in sparse checkout rules.
+                * Do not allow users to do that.
+                */
                if (o->result.cache_nr && empty_worktree) {
-                       /* dubious---why should this fail??? */
                        ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory");
                        goto done;
                }