3 files changed, 14 insertions, 10 deletions

diff --git a/subcmds/start.py b/subcmds/start.py
index d1430a9d..290b6897 100644
--- a/subcmds/start.py
+++ b/subcmds/start.py
@@ -54,8 +54,7 @@ revision specified in the manifest.
     if not opt.all:
       projects = args[1:]
       if len(projects) < 1:
-        print("error: at least one project must be specified", file=sys.stderr)
-        sys.exit(1)
+        projects = ['.',]  # start it in the local project by default
 
     all_projects = self.GetProjects(projects,
                                     missing_ok=bool(self.gitc_manifest))
diff --git a/subcmds/sync.py b/subcmds/sync.py
index 9124a653..ecf2ffc0 100644
--- a/subcmds/sync.py
+++ b/subcmds/sync.py
@@ -397,9 +397,12 @@ later is required to fix a server side protocol bug.
     return fetched
 
   def _GCProjects(self, projects):
-    gitdirs = {}
+    gc_gitdirs = {}
     for project in projects:
-      gitdirs[project.gitdir] = project.bare_git
+      if len(project.manifest.GetProjectsWithName(project.name)) > 1:
+        print('Shared project %s found, disabling pruning.' % project.name)
+        project.bare_git.config('--replace-all', 'gc.pruneExpire', 'never')
+      gc_gitdirs[project.gitdir] = project.bare_git
 
     has_dash_c = git_require((1, 7, 2))
     if multiprocessing and has_dash_c:
@@ -409,7 +412,7 @@ later is required to fix a server side protocol bug.
     jobs = min(self.jobs, cpu_count)
 
     if jobs < 2:
-      for bare_git in gitdirs.values():
+      for bare_git in gc_gitdirs.values():
         bare_git.gc('--auto')
       return
 
@@ -431,7 +434,7 @@ later is required to fix a server side protocol bug.
       finally:
         sem.release()
 
-    for bare_git in gitdirs.values():
+    for bare_git in gc_gitdirs.values():
       if err_event.isSet():
         break
       sem.acquire()
diff --git a/subcmds/upload.py b/subcmds/upload.py
index 4b05f1e8..1172dadc 100644
--- a/subcmds/upload.py
+++ b/subcmds/upload.py
@@ -454,7 +454,11 @@ Gerrit Code Review:  http://code.google.com/p/gerrit/
       if avail:
         pending.append((project, avail))
 
-    if pending and (not opt.bypass_hooks):
+    if not pending:
+      print("no branches ready for upload", file=sys.stderr)
+      return
+
+    if not opt.bypass_hooks:
       hook = RepoHook('pre-upload', self.manifest.repo_hooks_project,
                       self.manifest.topdir,
                       self.manifest.manifestProject.GetRemote('origin').url,
@@ -474,9 +478,7 @@ Gerrit Code Review:  http://code.google.com/p/gerrit/
       cc = _SplitEmails(opt.cc)
     people = (reviewers, cc)
 
-    if not pending:
-      print("no branches ready for upload", file=sys.stderr)
-    elif len(pending) == 1 and len(pending[0][1]) == 1:
+    if len(pending) == 1 and len(pending[0][1]) == 1:
       self._SingleBranch(opt, pending[0][1][0], people)
     else:
       self._MultipleBranches(opt, pending, people)