Allow cloning an empty repository

Cloning an empty repository manually (that is, doing 'git init' and
then doing all configuration by hand) can be a lot of work. Save the
user this work by allowing the cloning of empty repositories.

Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-clone.c b/builtin-clone.c
index f7e5a7b0a060c15432162fefc2e0ff89baf451b0..1e9c9aa8446370070d56126ad851701c4c418de0 100644 (file)
--- a/builtin-clone.c
+++ b/builtin-clone.c
@@ -522,14 +522,23 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                                             option_upload_pack);
 
                refs = transport_get_remote_refs(transport);
-               transport_fetch_refs(transport, refs);
+               if(refs)
+                       transport_fetch_refs(transport, refs);
        }
 
-       clear_extra_refs();
+       if (refs) {
+               clear_extra_refs();
 
-       mapped_refs = write_remote_refs(refs, &refspec, reflog_msg.buf);
+               mapped_refs = write_remote_refs(refs, &refspec, reflog_msg.buf);
 
-       head_points_at = locate_head(refs, mapped_refs, &remote_head);
+               head_points_at = locate_head(refs, mapped_refs, &remote_head);
+       }
+       else {
+               warning("You appear to have cloned an empty repository.");
+               head_points_at = NULL;
+               remote_head = NULL;
+               option_no_checkout = 1;
+       }
 
        if (head_points_at) {
                /* Local default branch link */

diff --git a/t/t5701-clone-local.sh b/t/t5701-clone-local.sh
index 8dfaaa456e115e85e36c438bb998d8053534104e..fbd9bfa57350e42d21ecfd3e1ccce13cc26b67dc 100755 (executable)
--- a/t/t5701-clone-local.sh
+++ b/t/t5701-clone-local.sh
@@ -116,4 +116,20 @@ test_expect_success 'bundle clone with nonexistent HEAD' '
        test ! -e .git/refs/heads/master
 '
 
+test_expect_success 'clone empty repository' '
+       cd "$D" &&
+       mkdir empty &&
+       (cd empty && git init) &&
+       git clone empty empty-clone &&
+       test_tick &&
+       (cd empty-clone
+        echo "content" >> foo &&
+        git add foo &&
+        git commit -m "Initial commit" &&
+        git push origin master &&
+        expected=$(git rev-parse master) &&
+        actual=$(git --git-dir=../empty/.git rev-parse master) &&
+        test $actual = $expected)
+'
+
 test_done