Merge branch 'bc/maint-keep-pack' into maint

* bc/maint-keep-pack:
  repack: only unpack-unreachable if we are deleting redundant packs
  t7700: test that 'repack -a' packs alternate packed objects
  pack-objects: extend --local to mean ignore non-local loose objects too
  sha1_file.c: split has_loose_object() into local and non-local counterparts
  t7700: demonstrate mishandling of loose objects in an alternate ODB
  builtin-gc.c: use new pack_keep bitfield to detect .keep file existence
  repack: do not fall back to incremental repacking with [-a|-A]
  repack: don't repack local objects in packs with .keep file
  pack-objects: new option --honor-pack-keep
  packed_git: convert pack_local flag into a bitfield and add pack_keep
  t7700: demonstrate mishandling of objects in packs with a .keep file

1 files changed, 18 insertions, 6 deletions

diff --git a/sha1_file.c b/sha1_file.c
index 4e05429aba..c35469d488 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -410,23 +410,30 @@ void prepare_alt_odb(void)
 	read_info_alternates(get_object_directory(), 0);
 }
 
-static int has_loose_object(const unsigned char *sha1)
+static int has_loose_object_local(const unsigned char *sha1)
 {
 	char *name = sha1_file_name(sha1);
-	struct alternate_object_database *alt;
+	return !access(name, F_OK);
+}
 
-	if (!access(name, F_OK))
-		return 1;
+int has_loose_object_nonlocal(const unsigned char *sha1)
+{
+	struct alternate_object_database *alt;
 	prepare_alt_odb();
 	for (alt = alt_odb_list; alt; alt = alt->next) {
-		name = alt->name;
-		fill_sha1_path(name, sha1);
+		fill_sha1_path(alt->name, sha1);
 		if (!access(alt->base, F_OK))
 			return 1;
 	}
 	return 0;
 }
 
+static int has_loose_object(const unsigned char *sha1)
+{
+	return has_loose_object_local(sha1) ||
+	       has_loose_object_nonlocal(sha1);
+}
+
 static unsigned int pack_used_ctr;
 static unsigned int pack_mmap_calls;
 static unsigned int peak_pack_open_windows;
@@ -828,6 +835,11 @@ struct packed_git *add_packed_git(const char *path, int path_len, int local)
 		return NULL;
 	}
 	memcpy(p->pack_name, path, path_len);
+
+	strcpy(p->pack_name + path_len, ".keep");
+	if (!access(p->pack_name, F_OK))
+		p->pack_keep = 1;
+
 	strcpy(p->pack_name + path_len, ".pack");
 	if (stat(p->pack_name, &st) || !S_ISREG(st.st_mode)) {
 		free(p);