# HG changeset patch
# User Boris Feld <boris.feld@octobus.net>
# Date 1542908647 -3600
# Node ID 41b6245c3fc4d9a3f4b548e9114c7b6acc7ccb89
# Parent  45a0047c0ebcf12ad75001bdc4257a5966347ffc
vfs: treat 'undo.' file the same as 'journal.' file

They are the same kind of file, they are protected by the store lock, but
directly lives inside the '.hg' directory.

No warnings were ever raised about them because `vfs.rename` is not audited.
Something we are trying to change.

diff -r 45a0047c0ebc -r 41b6245c3fc4 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Thu Nov 22 21:00:13 2018 +0100
+++ b/mercurial/localrepo.py	Thu Nov 22 18:44:07 2018 +0100
@@ -1031,7 +1031,7 @@
             if path.startswith('cache/'):
                 msg = 'accessing cache with vfs instead of cachevfs: "%s"'
                 repo.ui.develwarn(msg % path, stacklevel=2, config="cache-vfs")
-            if path.startswith('journal.'):
+            if path.startswith('journal.') or path.startswith('undo.'):
                 # journal is covered by 'lock'
                 if repo._currentlock(repo._lockref) is None:
                     repo.ui.develwarn('write with no lock: "%s"' % path,