# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 1182444159 18000
# Node ID f9b8ea362b49e4a6d8bcc511678ea1e08745636e
# Parent  a7e9b6b1adeb0f2c8853b51bbf97ecba55a37c20
identify: show nullid for empty repo

diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -1441,10 +1441,10 @@ def identify(ui, repo):
     hash identifiers, followed by a "+" if there are uncommitted changes
     in the working directory, followed by a list of tags for this revision.
     """
+
     parents = [p for p in repo.dirstate.parents() if p != nullid]
     if not parents:
-        ui.write(_("unknown\n"))
-        return
+        parents = [nullid]
 
     hexfunc = ui.debugflag and hex or short
     modified, added, removed, deleted = repo.status()[:4]
diff --git a/tests/test-tags.out b/tests/test-tags.out
--- a/tests/test-tags.out
+++ b/tests/test-tags.out
@@ -1,4 +1,4 @@
-unknown
+000000000000 tip
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 0acdaf898367 tip
 tip                                0:0acdaf898367