First draft for clone -u

[Adrian Buehlmann]

I started trying to add option -u to the clone command.

Currently I have this first draft for a patch (feedback most welcome):


clone: add option -u/--updaterev

diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -626,11 +626,14 @@ def clone(ui, source, dest=None, **opts)
     this is not compatible with certain extensions that place their
     metadata under the .hg directory, such as mq.
     """
+    if opts.get('noupdate') and opts.get('updaterev'):
+        raise util.Abort(_("cannot specify both --noupdate and --updaterev\n"))
+
     hg.clone(cmdutil.remoteui(ui, opts), source, dest,
              pull=opts.get('pull'),
              stream=opts.get('uncompressed'),
              rev=opts.get('rev'),
-             update=not opts.get('noupdate'))
+             update=opts.get('updaterev') or not opts.get('noupdate'))

 def commit(ui, repo, *pats, **opts):
     """commit the specified files or all outstanding changes
@@ -3347,6 +3350,8 @@ table = {
         (clone,
          [('U', 'noupdate', None,
           _('the clone will only contain a repository (no working copy)')),
+          ('u', 'updaterev', '',
+           _('revision, tag or branch to check out')),
           ('r', 'rev', [],
            _('a changeset you would like to have after cloning')),
           ('', 'pull', None, _('use pull protocol to copy metadata')),
diff --git a/mercurial/hg.py b/mercurial/hg.py
--- a/mercurial/hg.py
+++ b/mercurial/hg.py
@@ -309,6 +309,8 @@ def clone(ui, source, dest=None, pull=Fa
             if update:
                 if update is not True:
                     checkout = update
+                    if src_repo.local():
+                        checkout = src_repo.lookup(update)
                 for test in (checkout, 'default', 'tip'):
                     if test is None:
                         continue


Example working uses:

$ hg clone -u stable http://bitbucket.org/tortoisehg/stable/ thgs
requesting all changes
adding changesets
adding manifests
adding file changes
added 4713 changesets with 6986 changes to 621 files
updating to branch stable
313 files updated, 0 files merged, 0 files removed, 0 files unresolved

$ hg clone -u . thgs thgs2
updating to branch stable
313 files updated, 0 files merged, 0 files removed, 0 files unresolved