unpack-trees: be specific what part of the index has changed

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/unpack-trees.c b/unpack-trees.c
index 97fc9954672f2c374541cad827bb5c459abebcdc..a722685f9aceb41733c938da6f6b294615d22bc0 100644 (file)
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -246,7 +246,9 @@ static int verify_absent_sparse(const struct cache_entry *ce,
                                enum unpack_trees_error_types,
                                struct unpack_trees_options *o);
 
-static int apply_sparse_checkout(struct cache_entry *ce, struct unpack_trees_options *o)
+static int apply_sparse_checkout(struct index_state *istate,
+                                struct cache_entry *ce,
+                                struct unpack_trees_options *o)
 {
        int was_skip_worktree = ce_skip_worktree(ce);
 
@@ -254,6 +256,8 @@ static int apply_sparse_checkout(struct cache_entry *ce, struct unpack_trees_opt
                ce->ce_flags |= CE_SKIP_WORKTREE;
        else
                ce->ce_flags &= ~CE_SKIP_WORKTREE;
+       if (was_skip_worktree != ce_skip_worktree(ce))
+               istate->cache_changed |= CE_ENTRY_CHANGED;
 
        /*
         * if (!was_skip_worktree && !ce_skip_worktree()) {
@@ -1131,7 +1135,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
                                ret = -1;
                        }
 
-                       if (apply_sparse_checkout(ce, o)) {
+                       if (apply_sparse_checkout(&o->result, ce, o)) {
                                if (!o->show_all_errors)
                                        goto return_failed;
                                ret = -1;