"git checkout -- paths..." should error out when paths cannot be written

When "git checkout -- paths..." cannot update work tree for whatever
reason, checkout_entry() correctly issued an error message for the path to
the end user, but the command ignored the error, causing the entire
command to succeed.  This fixes it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-checkout.c b/builtin-checkout.c
index 1ea017f5f70f2255fb937866e9913a06399ce517..00dc8cafd827aaffeb9f9e1b8cc7addb7fffaa8d 100644 (file)
--- a/builtin-checkout.c
+++ b/builtin-checkout.c
@@ -84,6 +84,7 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec)
        unsigned char rev[20];
        int flag;
        struct commit *head;
+       int errs = 0;
 
        int newfd;
        struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
@@ -106,13 +107,14 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec)
        if (report_path_error(ps_matched, pathspec, 0))
                return 1;
 
+       /* Now we are committed to check them out */
        memset(&state, 0, sizeof(state));
        state.force = 1;
        state.refresh_cache = 1;
        for (pos = 0; pos < active_nr; pos++) {
                struct cache_entry *ce = active_cache[pos];
                if (pathspec_match(pathspec, NULL, ce->name, 0)) {
-                       checkout_entry(ce, &state, NULL);
+                       errs |= checkout_entry(ce, &state, NULL);
                }
        }
 
@@ -123,7 +125,8 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec)
        resolve_ref("HEAD", rev, 0, &flag);
        head = lookup_commit_reference_gently(rev, 1);
 
-       return post_checkout_hook(head, head, 0);
+       errs |= post_checkout_hook(head, head, 0);
+       return errs;
 }
 
 static void show_local_changes(struct object *head)