Make unpack-tree update removed files before any updated files

This is immaterial on sane filesystems, but if you have a broken (aka
case-insensitive) filesystem, and the objective is to remove the file
'abc' and replace it with the file 'Abc', then we must make sure to do
the removal first.

Otherwise, you'd first update the file 'Abc' - which would just
overwrite the file 'abc' due to the broken case-insensitive filesystem -
and then remove file 'abc' - which would now brokenly remove the just
updated file 'Abc' on that broken filesystem.

By doing removals first, this won't happen.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/unpack-trees.c b/unpack-trees.c
index 95d3413ae5bfa905deb7c836fe0633cd0a9942df..feae846226237fce9b4ff4a4810a9961637a4ca5 100644 (file)
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -79,16 +79,21 @@ static int check_updates(struct unpack_trees_options *o)
        for (i = 0; i < index->cache_nr; i++) {
                struct cache_entry *ce = index->cache[i];
 
-               if (ce->ce_flags & (CE_UPDATE | CE_REMOVE))
-                       display_progress(progress, ++cnt);
                if (ce->ce_flags & CE_REMOVE) {
+                       display_progress(progress, ++cnt);
                        if (o->update)
                                unlink_entry(ce->name, last_symlink);
                        remove_index_entry_at(&o->result, i);
                        i--;
                        continue;
                }
+       }
+
+       for (i = 0; i < index->cache_nr; i++) {
+               struct cache_entry *ce = index->cache[i];
+
                if (ce->ce_flags & CE_UPDATE) {
+                       display_progress(progress, ++cnt);
                        ce->ce_flags &= ~CE_UPDATE;
                        if (o->update) {
                                errs |= checkout_entry(ce, &state, NULL);