diff --git a/.project b/.project
index 67e4a0f..3aefb86 100644
--- a/.project
+++ b/.project
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <projectDescription>
-	<name>repo</name>
+	<name>git-repo</name>
 	<comment></comment>
 	<projects>
 	</projects>
diff --git a/.pydevproject b/.pydevproject
index 880abd6..27c2485 100644
--- a/.pydevproject
+++ b/.pydevproject
@@ -3,7 +3,7 @@
 
 <pydev_project>
 <pydev_pathproperty name="org.python.pydev.PROJECT_SOURCE_PATH">
-<path>/repo</path>
+<path>/git-repo</path>
 </pydev_pathproperty>
 <pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python 2.6</pydev_property>
 <pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
diff --git a/.pylintrc b/.pylintrc
index 9e8882e..10b842d 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -53,7 +53,7 @@
 enable=RP0004
 
 # Disable the message(s) with the given id(s).
-disable=R0903,R0912,R0913,R0914,R0915,W0141,C0111,C0103,W0603,W0703,R0911,C0301,C0302,R0902,R0904,W0142,W0212,E1101,E1103,R0201,W0201,W0122,W0232,RP0001,RP0003,RP0101,RP0002,RP0401,RP0701,RP0801
+disable=R0903,R0912,R0913,R0914,R0915,W0141,C0111,C0103,W0603,W0703,R0911,C0301,C0302,R0902,R0904,W0142,W0212,E1101,E1103,R0201,W0201,W0122,W0232,RP0001,RP0003,RP0101,RP0002,RP0401,RP0701,RP0801,F0401,E0611,R0801
 
 [REPORTS]
 
diff --git a/command.py b/command.py
index 96d7848..287f4d3 100644
--- a/command.py
+++ b/command.py
@@ -136,11 +136,11 @@
 
     groups = mp.config.GetString('manifest.groups')
     if not groups:
-      groups = 'all,-notdefault,platform-' + platform.system().lower()
+      groups = 'default,platform-' + platform.system().lower()
     groups = [x for x in re.split(r'[,\s]+', groups) if x]
 
     if not args:
-      all_projects_list = all_projects.values()
+      all_projects_list = list(all_projects.values())
       derived_projects = {}
       for project in all_projects_list:
         if submodules_ok or project.sync_s:
@@ -186,6 +186,17 @@
     result.sort(key=_getpath)
     return result
 
+  def FindProjects(self, args):
+    result = []
+    patterns = [re.compile(r'%s' % a, re.IGNORECASE) for a in args]
+    for project in self.GetProjects(''):
+      for pattern in patterns:
+        if pattern.search(project.name) or pattern.search(project.relpath):
+          result.append(project)
+          break
+    result.sort(key=lambda project: project.relpath)
+    return result
+
 # pylint: disable=W0223
 # Pylint warns that the `InteractiveCommand` and `PagedCommand` classes do not
 # override method `Execute` which is abstract in `Command`.  Since that method
diff --git a/docs/manifest-format.txt b/docs/manifest-format.txt
index 0bf09f6..59f6a2f 100644
--- a/docs/manifest-format.txt
+++ b/docs/manifest-format.txt
@@ -56,6 +56,8 @@
     <!ATTLIST project sync-c   CDATA #IMPLIED>
     <!ATTLIST project sync-s   CDATA #IMPLIED>
     <!ATTLIST project upstream CDATA #IMPLIED>
+    <!ATTLIST project clone-depth CDATA #IMPLIED>
+    <!ATTLIST project force-path CDATA #IMPLIED>
 
     <!ELEMENT annotation (EMPTY)>
     <!ATTLIST annotation name  CDATA #REQUIRED>
@@ -222,6 +224,16 @@
 can be found.  Used when syncing a revision locked manifest in
 -c mode to avoid having to sync the entire ref space.
 
+Attribute `clone-depth`: Set the depth to use when fetching this
+project.  If specified, this value will override any value given
+to repo init with the --depth option on the command line.
+
+Attribute `force-path`: Set to true to force this project to create the
+local mirror repository according to its `path` attribute (if supplied)
+rather than the `name` attribute.  This attribute only applies to the
+local mirrors syncing, it will be ignored when syncing the projects in a
+client working directory.
+
 Element annotation
 ------------------
 
diff --git a/git_config.py b/git_config.py
index 56cc6a2..9524df9 100644
--- a/git_config.py
+++ b/git_config.py
@@ -14,8 +14,9 @@
 # limitations under the License.
 
 from __future__ import print_function
-import cPickle
+
 import os
+import pickle
 import re
 import subprocess
 import sys
@@ -262,7 +263,7 @@
       Trace(': unpickle %s', self.file)
       fd = open(self._pickle, 'rb')
       try:
-        return cPickle.load(fd)
+        return pickle.load(fd)
       finally:
         fd.close()
     except EOFError:
@@ -271,7 +272,7 @@
     except IOError:
       os.remove(self._pickle)
       return None
-    except cPickle.PickleError:
+    except pickle.PickleError:
       os.remove(self._pickle)
       return None
 
@@ -279,13 +280,13 @@
     try:
       fd = open(self._pickle, 'wb')
       try:
-        cPickle.dump(cache, fd, cPickle.HIGHEST_PROTOCOL)
+        pickle.dump(cache, fd, pickle.HIGHEST_PROTOCOL)
       finally:
         fd.close()
     except IOError:
       if os.path.exists(self._pickle):
         os.remove(self._pickle)
-    except cPickle.PickleError:
+    except pickle.PickleError:
       if os.path.exists(self._pickle):
         os.remove(self._pickle)
 
@@ -537,8 +538,8 @@
     self.url = self._Get('url')
     self.review = self._Get('review')
     self.projectname = self._Get('projectname')
-    self.fetch = map(RefSpec.FromString,
-                     self._Get('fetch', all_keys=True))
+    self.fetch = list(map(RefSpec.FromString,
+                      self._Get('fetch', all_keys=True)))
     self._review_url = None
 
   def _InsteadOf(self):
@@ -657,7 +658,7 @@
     self._Set('url', self.url)
     self._Set('review', self.review)
     self._Set('projectname', self.projectname)
-    self._Set('fetch', map(str, self.fetch))
+    self._Set('fetch', list(map(str, self.fetch)))
 
   def _Set(self, key, value):
     key = 'remote.%s.%s' % (self.name, key)
diff --git a/git_refs.py b/git_refs.py
index cfeffba..4dd6876 100644
--- a/git_refs.py
+++ b/git_refs.py
@@ -66,7 +66,7 @@
   def _NeedUpdate(self):
     Trace(': scan refs %s', self._gitdir)
 
-    for name, mtime in self._mtime.iteritems():
+    for name, mtime in self._mtime.items():
       try:
         if mtime != os.path.getmtime(os.path.join(self._gitdir, name)):
           return True
@@ -89,7 +89,7 @@
     attempts = 0
     while scan and attempts < 5:
       scan_next = {}
-      for name, dest in scan.iteritems():
+      for name, dest in scan.items():
         if dest in self._phyref:
           self._phyref[name] = self._phyref[dest]
         else:
@@ -108,6 +108,7 @@
       return
     try:
       for line in fd:
+        line = str(line)
         if line[0] == '#':
           continue
         if line[0] == '^':
@@ -150,6 +151,10 @@
     finally:
       fd.close()
 
+    try:
+      ref_id = ref_id.decode()
+    except AttributeError:
+      pass
     if not ref_id:
       return
     ref_id = ref_id[:-1]
diff --git a/main.py b/main.py
index 9cc2639..49d2482 100755
--- a/main.py
+++ b/main.py
@@ -50,6 +50,11 @@
 
 from subcmds import all_commands
 
+try:
+  input = raw_input
+except NameError:
+  pass
+
 global_options = optparse.OptionParser(
                  usage="repo [-p|--paginate|--no-pager] COMMAND [ARGS]"
                  )
@@ -286,7 +291,7 @@
   if user is None:
     print(msg)
     try:
-      user = raw_input('User: ')
+      user = input('User: ')
       password = getpass.getpass()
     except KeyboardInterrupt:
       return
diff --git a/manifest_xml.py b/manifest_xml.py
index 50417c6..cc441dc 100644
--- a/manifest_xml.py
+++ b/manifest_xml.py
@@ -18,7 +18,15 @@
 import os
 import re
 import sys
-import urlparse
+try:
+  # For python3
+  import urllib.parse
+except ImportError:
+  # For python2
+  import imp
+  import urlparse
+  urllib = imp.new_module('urllib')
+  urllib.parse = urlparse
 import xml.dom.minidom
 
 from git_config import GitConfig
@@ -30,8 +38,8 @@
 LOCAL_MANIFEST_NAME = 'local_manifest.xml'
 LOCAL_MANIFESTS_DIR_NAME = 'local_manifests'
 
-urlparse.uses_relative.extend(['ssh', 'git'])
-urlparse.uses_netloc.extend(['ssh', 'git'])
+urllib.parse.uses_relative.extend(['ssh', 'git'])
+urllib.parse.uses_netloc.extend(['ssh', 'git'])
 
 class _Default(object):
   """Project defaults within the manifest."""
@@ -73,7 +81,7 @@
     # ie, if manifestUrl is of the form <hostname:port>
     if manifestUrl.find(':') != manifestUrl.find('/') - 1:
       manifestUrl = 'gopher://' + manifestUrl
-    url = urlparse.urljoin(manifestUrl, url)
+    url = urllib.parse.urljoin(manifestUrl, url)
     url = re.sub(r'^gopher://', '', url)
     if p:
       url = 'persistent-' + url
@@ -82,8 +90,6 @@
   def ToRemoteSpec(self, projectName):
     url = self.resolvedFetchUrl.rstrip('/') + '/' + projectName
     remoteName = self.name
-    if self.remoteAlias:
-      remoteName = self.remoteAlias
     return RemoteSpec(remoteName, url, self.reviewUrl)
 
 class XmlManifest(object):
@@ -164,10 +170,8 @@
       notice_element.appendChild(doc.createTextNode(indented_notice))
 
     d = self.default
-    sort_remotes = list(self.remotes.keys())
-    sort_remotes.sort()
 
-    for r in sort_remotes:
+    for r in sorted(self.remotes):
       self._RemoteToXml(self.remotes[r], doc, root)
     if self.remotes:
       root.appendChild(doc.createTextNode(''))
@@ -259,12 +263,11 @@
         e.setAttribute('sync-s', 'true')
 
       if p.subprojects:
-        sort_projects = [subp.name for subp in p.subprojects]
-        sort_projects.sort()
+        sort_projects = list(sorted([subp.name for subp in p.subprojects]))
         output_projects(p, e, sort_projects)
 
-    sort_projects = [key for key in self.projects.keys()
-                     if not self.projects[key].parent]
+    sort_projects = list(sorted([key for key, value in self.projects.items()
+                     if not value.parent]))
     sort_projects.sort()
     output_projects(None, root, sort_projects)
 
@@ -388,9 +391,8 @@
         name = self._reqatt(node, 'name')
         fp = os.path.join(include_root, name)
         if not os.path.isfile(fp):
-          raise ManifestParseError, \
-              "include %s doesn't exist or isn't a file" % \
-              (name,)
+          raise ManifestParseError("include %s doesn't exist or isn't a file"
+              % (name,))
         try:
           nodes.extend(self._ParseManifestXml(fp, include_root))
         # should isolate this to the exact exception, but that's
@@ -496,7 +498,7 @@
     name = None
     m_url = m.GetRemote(m.remote.name).url
     if m_url.endswith('/.git'):
-      raise ManifestParseError, 'refusing to mirror %s' % m_url
+      raise ManifestParseError('refusing to mirror %s' % m_url)
 
     if self._default and self._default.remote:
       url = self._default.remote.resolvedFetchUrl
@@ -590,7 +592,7 @@
 
     # Figure out minimum indentation, skipping the first line (the same line
     # as the <notice> tag)...
-    minIndent = sys.maxint
+    minIndent = sys.maxsize
     lines = notice.splitlines()
     for line in lines[1:]:
       lstrippedLine = line.lstrip()
@@ -629,25 +631,22 @@
     if remote is None:
       remote = self._default.remote
     if remote is None:
-      raise ManifestParseError, \
-            "no remote for project %s within %s" % \
-            (name, self.manifestFile)
+      raise ManifestParseError("no remote for project %s within %s" %
+            (name, self.manifestFile))
 
     revisionExpr = node.getAttribute('revision')
     if not revisionExpr:
       revisionExpr = self._default.revisionExpr
     if not revisionExpr:
-      raise ManifestParseError, \
-            "no revision for project %s within %s" % \
-            (name, self.manifestFile)
+      raise ManifestParseError("no revision for project %s within %s" %
+            (name, self.manifestFile))
 
     path = node.getAttribute('path')
     if not path:
       path = name
     if path.startswith('/'):
-      raise ManifestParseError, \
-            "project %s path cannot be absolute in %s" % \
-            (name, self.manifestFile)
+      raise ManifestParseError("project %s path cannot be absolute in %s" %
+            (name, self.manifestFile))
 
     rebase = node.getAttribute('rebase')
     if not rebase:
@@ -667,6 +666,16 @@
     else:
       sync_s = sync_s.lower() in ("yes", "true", "1")
 
+    clone_depth = node.getAttribute('clone-depth')
+    if clone_depth:
+      try:
+        clone_depth = int(clone_depth)
+        if  clone_depth <= 0:
+          raise ValueError()
+      except ValueError:
+        raise ManifestParseError('invalid clone-depth %s in %s' %
+                                 (clone_depth, self.manifestFile))
+
     upstream = node.getAttribute('upstream')
 
     groups = ''
@@ -682,6 +691,10 @@
     default_groups = ['all', 'name:%s' % name, 'path:%s' % relpath]
     groups.extend(set(default_groups).difference(groups))
 
+    if self.IsMirror and node.hasAttribute('force-path'):
+      if node.getAttribute('force-path').lower() in ("yes", "true", "1"):
+        gitdir = os.path.join(self.topdir, '%s.git' % path)
+
     project = Project(manifest = self,
                       name = name,
                       remote = remote.ToRemoteSpec(name),
@@ -694,6 +707,7 @@
                       groups = groups,
                       sync_c = sync_c,
                       sync_s = sync_s,
+                      clone_depth = clone_depth,
                       upstream = upstream,
                       parent = parent)
 
@@ -751,7 +765,8 @@
     except ManifestParseError:
       keep = "true"
     if keep != "true" and keep != "false":
-      raise ManifestParseError, "optional \"keep\" attribute must be \"true\" or \"false\""
+      raise ManifestParseError('optional "keep" attribute must be '
+            '"true" or "false"')
     project.AddAnnotation(name, value, keep)
 
   def _get_remote(self, node):
@@ -761,9 +776,8 @@
 
     v = self._remotes.get(name)
     if not v:
-      raise ManifestParseError, \
-            "remote %s not defined in %s" % \
-            (name, self.manifestFile)
+      raise ManifestParseError("remote %s not defined in %s" %
+            (name, self.manifestFile))
     return v
 
   def _reqatt(self, node, attname):
@@ -772,7 +786,6 @@
     """
     v = node.getAttribute(attname)
     if not v:
-      raise ManifestParseError, \
-            "no %s in <%s> within %s" % \
-            (attname, node.nodeName, self.manifestFile)
+      raise ManifestParseError("no %s in <%s> within %s" %
+            (attname, node.nodeName, self.manifestFile))
     return v
diff --git a/project.py b/project.py
index 792ad4c..516d3b6 100644
--- a/project.py
+++ b/project.py
@@ -36,6 +36,11 @@
 
 from git_refs import GitRefs, HEAD, R_HEADS, R_TAGS, R_PUB, R_M
 
+try:
+  input = raw_input
+except NameError:
+  pass
+
 def _lwrite(path, content):
   lock = '%s.lock' % path
 
@@ -78,7 +83,7 @@
   if _project_hook_list is None:
     d = os.path.abspath(os.path.dirname(__file__))
     d = os.path.join(d , 'hooks')
-    _project_hook_list = map(lambda x: os.path.join(d, x), os.listdir(d))
+    _project_hook_list = [os.path.join(d, x) for x in os.listdir(d)]
   return _project_hook_list
 
 
@@ -361,7 +366,7 @@
                  'Do you want to allow this script to run '
                  '(yes/yes-never-ask-again/NO)? ') % (
                  self._GetMustVerb(), self._script_fullpath)
-      response = raw_input(prompt).lower()
+      response = input(prompt).lower()
       print()
 
       # User is doing a one-time approval.
@@ -488,6 +493,7 @@
                groups = None,
                sync_c = False,
                sync_s = False,
+               clone_depth = None,
                upstream = None,
                parent = None,
                is_derived = False):
@@ -533,6 +539,7 @@
     self.groups = groups
     self.sync_c = sync_c
     self.sync_s = sync_s
+    self.clone_depth = clone_depth
     self.upstream = upstream
     self.parent = parent
     self.is_derived = is_derived
@@ -644,7 +651,7 @@
     all_refs = self._allrefs
     heads = {}
 
-    for name, ref_id in all_refs.iteritems():
+    for name, ref_id in all_refs.items():
       if name.startswith(R_HEADS):
         name = name[len(R_HEADS):]
         b = self.GetBranch(name)
@@ -653,7 +660,7 @@
         b.revision = ref_id
         heads[name] = b
 
-    for name, ref_id in all_refs.iteritems():
+    for name, ref_id in all_refs.items():
       if name.startswith(R_PUB):
         name = name[len(R_PUB):]
         b = heads.get(name)
@@ -672,9 +679,14 @@
        project_groups: "all,group1,group2"
        manifest_groups: "-group1,group2"
        the project will be matched.
+
+       The special manifest group "default" will match any project that
+       does not have the special project group "notdefault"
     """
-    expanded_manifest_groups = manifest_groups or ['all', '-notdefault']
+    expanded_manifest_groups = manifest_groups or ['default']
     expanded_project_groups = ['all'] + (self.groups or [])
+    if not 'notdefault' in expanded_project_groups:
+      expanded_project_groups += ['default']
 
     matched = False
     for group in expanded_manifest_groups:
@@ -754,10 +766,7 @@
     paths.extend(df.keys())
     paths.extend(do)
 
-    paths = list(set(paths))
-    paths.sort()
-
-    for p in paths:
+    for p in sorted(set(paths)):
       try:
         i = di[p]
       except KeyError:
@@ -849,13 +858,13 @@
       all_refs = self._allrefs
     heads = set()
     canrm = {}
-    for name, ref_id in all_refs.iteritems():
+    for name, ref_id in all_refs.items():
       if name.startswith(R_HEADS):
         heads.add(name)
       elif name.startswith(R_PUB):
         canrm[name] = ref_id
 
-    for name, ref_id in canrm.iteritems():
+    for name, ref_id in canrm.items():
       n = name[len(R_PUB):]
       if R_HEADS + n not in heads:
         self.bare_git.DeleteRef(name, ref_id)
@@ -866,14 +875,14 @@
     heads = {}
     pubed = {}
 
-    for name, ref_id in self._allrefs.iteritems():
+    for name, ref_id in self._allrefs.items():
       if name.startswith(R_HEADS):
         heads[name[len(R_HEADS):]] = ref_id
       elif name.startswith(R_PUB):
         pubed[name[len(R_PUB):]] = ref_id
 
     ready = []
-    for branch, ref_id in heads.iteritems():
+    for branch, ref_id in heads.items():
       if branch in pubed and pubed[branch] == ref_id:
         continue
       if selected_branch and branch != selected_branch:
@@ -1218,7 +1227,7 @@
     cmd = ['fetch', remote.name]
     cmd.append('refs/changes/%2.2d/%d/%d' \
                % (change_id % 100, change_id, patch_id))
-    cmd.extend(map(str, remote.fetch))
+    cmd.extend(list(map(str, remote.fetch)))
     if GitCommand(self, cmd, bare=True).Wait() != 0:
       return None
     return DownloadedChange(self,
@@ -1607,7 +1616,7 @@
         ids = set(all_refs.values())
         tmp = set()
 
-        for r, ref_id in GitRefs(ref_dir).all.iteritems():
+        for r, ref_id in GitRefs(ref_dir).all.items():
           if r not in all_refs:
             if r.startswith(R_TAGS) or remote.WritesTo(r):
               all_refs[r] = ref_id
@@ -1622,13 +1631,10 @@
           ids.add(ref_id)
           tmp.add(r)
 
-        ref_names = list(all_refs.keys())
-        ref_names.sort()
-
         tmp_packed = ''
         old_packed = ''
 
-        for r in ref_names:
+        for r in sorted(all_refs):
           line = '%s %s\n' % (all_refs[r], r)
           tmp_packed += line
           if r not in tmp:
@@ -1642,7 +1648,10 @@
 
     # The --depth option only affects the initial fetch; after that we'll do
     # full fetches of changes.
-    depth = self.manifest.manifestProject.config.GetString('repo.depth')
+    if self.clone_depth:
+      depth = self.clone_depth
+    else:
+      depth = self.manifest.manifestProject.config.GetString('repo.depth')
     if depth and initial:
       cmd.append('--depth=%s' % depth)
 
@@ -1654,11 +1663,13 @@
 
     if not current_branch_only:
       # Fetch whole repo
-      if no_tags:
+      # If using depth then we should not get all the tags since they may
+      # be outside of the depth.
+      if no_tags or depth:
         cmd.append('--no-tags')
       else:
         cmd.append('--tags')
-      cmd.append((u'+refs/heads/*:') + remote.ToLocal('refs/heads/*'))
+      cmd.append(str((u'+refs/heads/*:') + remote.ToLocal('refs/heads/*')))
     elif tag_name is not None:
       cmd.append('tag')
       cmd.append(tag_name)
@@ -1668,7 +1679,7 @@
         branch = self.upstream
       if branch.startswith(R_HEADS):
         branch = branch[len(R_HEADS):]
-      cmd.append((u'+refs/heads/%s:' % branch) + remote.ToLocal('refs/heads/%s' % branch))
+      cmd.append(str((u'+refs/heads/%s:' % branch) + remote.ToLocal('refs/heads/%s' % branch)))
 
     ok = False
     for _i in range(2):
@@ -1702,7 +1713,7 @@
     return ok
 
   def _ApplyCloneBundle(self, initial=False, quiet=False):
-    if initial and self.manifest.manifestProject.config.GetString('repo.depth'):
+    if initial and (self.manifest.manifestProject.config.GetString('repo.depth') or self.clone_depth):
       return False
 
     remote = self.GetRemote(self.remote.name)
@@ -2099,6 +2110,10 @@
         line = fd.read()
       finally:
         fd.close()
+      try:
+        line = line.decode()
+      except AttributeError:
+        pass
       if line.startswith('ref: '):
         return line[5:-1]
       return line[:-1]
@@ -2192,7 +2207,7 @@
           if not git_require((1, 7, 2)):
             raise ValueError('cannot set config on command line for %s()'
                              % name)
-          for k, v in config.iteritems():
+          for k, v in config.items():
             cmdv.append('-c')
             cmdv.append('%s=%s' % (k, v))
         cmdv.append(name)
@@ -2208,6 +2223,10 @@
                          name,
                          p.stderr))
         r = p.stdout
+        try:
+          r = r.decode()
+        except AttributeError:
+          pass
         if r.endswith('\n') and r.index('\n') == len(r) - 1:
           return r[:-1]
         return r
diff --git a/repo b/repo
index 6b374f7..791e40c 100755
--- a/repo
+++ b/repo
@@ -108,6 +108,7 @@
 S_repo = 'repo'                 # special repo repository
 S_manifests = 'manifests'       # special manifest repository
 REPO_MAIN = S_repo + '/main.py' # main script
+MIN_PYTHON_VERSION = (2, 6)     # minimum supported python version
 
 
 import optparse
@@ -129,6 +130,19 @@
   urllib.request = urllib2
   urllib.error = urllib2
 
+# Python version check
+ver = sys.version_info
+if ver[0] == 3:
+  print('error: Python 3 support is not fully implemented in repo yet.\n'
+        'Please use Python 2.6 - 2.7 instead.',
+        file=sys.stderr)
+  sys.exit(1)
+if (ver[0], ver[1]) < MIN_PYTHON_VERSION:
+  print('error: Python version %s unsupported.\n'
+        'Please use Python 2.6 - 2.7 instead.'
+        % sys.version.split(' ')[0], file=sys.stderr)
+  sys.exit(1)
+
 home_dot_repo = os.path.expanduser('~/.repoconfig')
 gpg_dir = os.path.join(home_dot_repo, 'gnupg')
 
@@ -164,7 +178,8 @@
                  help='create a shallow clone with given depth; see git clone')
 group.add_option('-g', '--groups',
                  dest='groups', default='default',
-                 help='restrict manifest projects to ones with a specified group',
+                 help='restrict manifest projects to ones with specified '
+                      'group(s) [default|all|G1,G2,G3|G4,-G5,-G6]',
                  metavar='GROUP')
 group.add_option('-p', '--platform',
                  dest='platform', default="auto",
diff --git a/subcmds/__init__.py b/subcmds/__init__.py
index 1fac802..84efb4d 100644
--- a/subcmds/__init__.py
+++ b/subcmds/__init__.py
@@ -38,8 +38,8 @@
     try:
       cmd = getattr(mod, clsn)()
     except AttributeError:
-      raise SyntaxError, '%s/%s does not define class %s' % (
-                         __name__, py, clsn)
+      raise SyntaxError('%s/%s does not define class %s' % (
+                         __name__, py, clsn))
 
     name = name.replace('_', '-')
     cmd.NAME = name
diff --git a/subcmds/branches.py b/subcmds/branches.py
index 06d45ab..c2e7c4b 100644
--- a/subcmds/branches.py
+++ b/subcmds/branches.py
@@ -98,14 +98,13 @@
     project_cnt = len(projects)
 
     for project in projects:
-      for name, b in project.GetBranches().iteritems():
+      for name, b in project.GetBranches().items():
         b.project = project
         if name not in all_branches:
           all_branches[name] = BranchInfo(name)
         all_branches[name].add(b)
 
-    names = all_branches.keys()
-    names.sort()
+    names = list(sorted(all_branches))
 
     if not names:
       print('   (no branches)', file=sys.stderr)
diff --git a/subcmds/forall.py b/subcmds/forall.py
index 4c1c9ff..7d5f779 100644
--- a/subcmds/forall.py
+++ b/subcmds/forall.py
@@ -42,10 +42,14 @@
   helpSummary = "Run a shell command in each project"
   helpUsage = """
 %prog [<project>...] -c <command> [<arg>...]
+%prog -r str1 [str2] ... -c <command> [<arg>...]"
 """
   helpDescription = """
 Executes the same shell command in each project.
 
+The -r option allows running the command only on projects matching
+regex or wildcard expression.
+
 Output Formatting
 -----------------
 
@@ -103,6 +107,9 @@
       setattr(parser.values, option.dest, list(parser.rargs))
       while parser.rargs:
         del parser.rargs[0]
+    p.add_option('-r', '--regex',
+                 dest='regex', action='store_true',
+                 help="Execute the command only on projects matching regex or wildcard expression")
     p.add_option('-c', '--command',
                  help='Command (and arguments) to execute',
                  dest='command',
@@ -166,7 +173,12 @@
     rc = 0
     first = True
 
-    for project in self.GetProjects(args):
+    if not opt.regex:
+      projects = self.GetProjects(args)
+    else:
+      projects = self.FindProjects(args)
+
+    for project in projects:
       env = os.environ.copy()
       def setenv(name, val):
         if val is None:
diff --git a/subcmds/help.py b/subcmds/help.py
index 7842882..4aa3f86 100644
--- a/subcmds/help.py
+++ b/subcmds/help.py
@@ -34,8 +34,7 @@
   def _PrintAllCommands(self):
     print('usage: repo COMMAND [ARGS]')
     print('The complete list of recognized repo commands are:')
-    commandNames = self.commands.keys()
-    commandNames.sort()
+    commandNames = list(sorted(self.commands))
 
     maxlen = 0
     for name in commandNames:
@@ -55,10 +54,9 @@
   def _PrintCommonCommands(self):
     print('usage: repo COMMAND [ARGS]')
     print('The most commonly used repo commands are:')
-    commandNames = [name
-                    for name in self.commands.keys()
-                    if self.commands[name].common]
-    commandNames.sort()
+    commandNames = list(sorted([name
+                    for name, command in self.commands.items()
+                    if command.common]))
 
     maxlen = 0
     for name in commandNames:
diff --git a/subcmds/info.py b/subcmds/info.py
index 325874b..c10e56c 100644
--- a/subcmds/info.py
+++ b/subcmds/info.py
@@ -163,7 +163,7 @@
     all_branches = []
     for project in self.GetProjects(args):
       br = [project.GetUploadableBranch(x)
-            for x in project.GetBranches().keys()]
+            for x in project.GetBranches()]
       br = [x for x in br if x]
       if self.opt.current_branch:
         br = [x for x in br if x.name == project.CurrentBranch]
diff --git a/subcmds/init.py b/subcmds/init.py
index 1131260..29730cc 100644
--- a/subcmds/init.py
+++ b/subcmds/init.py
@@ -91,8 +91,9 @@
                  dest='depth',
                  help='create a shallow clone with given depth; see git clone')
     g.add_option('-g', '--groups',
-                 dest='groups', default='all,-notdefault',
-                 help='restrict manifest projects to ones with a specified group',
+                 dest='groups', default='default',
+                 help='restrict manifest projects to ones with specified '
+                      'group(s) [default|all|G1,G2,G3|G4,-G5,-G6]',
                  metavar='GROUP')
     g.add_option('-p', '--platform',
                  dest='platform', default='auto',
@@ -169,7 +170,7 @@
 
     groups = [x for x in groups if x]
     groupstr = ','.join(groups)
-    if opt.platform == 'auto' and groupstr == 'all,-notdefault,platform-' + platform.system().lower():
+    if opt.platform == 'auto' and groupstr == 'default,platform-' + platform.system().lower():
       groupstr = None
     m.config.SetString('manifest.groups', groupstr)
 
diff --git a/subcmds/list.py b/subcmds/list.py
index 0d5c27f..a335824 100644
--- a/subcmds/list.py
+++ b/subcmds/list.py
@@ -14,7 +14,7 @@
 # limitations under the License.
 
 from __future__ import print_function
-import re
+import sys
 
 from command import Command, MirrorSafeCommand
 
@@ -38,6 +38,12 @@
     p.add_option('-f', '--fullpath',
                  dest='fullpath', action='store_true',
                  help="Display the full work tree path instead of the relative path")
+    p.add_option('-n', '--name-only',
+                 dest='name_only', action='store_true',
+                 help="Display only the name of the repository")
+    p.add_option('-p', '--path-only',
+                 dest='path_only', action='store_true',
+                 help="Display only the path of the repository")
 
   def Execute(self, opt, args):
     """List all projects and the associated directories.
@@ -50,6 +56,11 @@
       opt: The options.
       args: Positional args.  Can be a list of projects to list, or empty.
     """
+
+    if opt.fullpath and opt.name_only:
+      print('error: cannot combine -f and -n', file=sys.stderr)
+      sys.exit(1)
+
     if not opt.regex:
       projects = self.GetProjects(args)
     else:
@@ -62,18 +73,12 @@
 
     lines = []
     for project in projects:
-      lines.append("%s : %s" % (_getpath(project), project.name))
+      if opt.name_only and not opt.path_only:
+        lines.append("%s" % ( project.name))
+      elif opt.path_only and not opt.name_only:
+        lines.append("%s" % (_getpath(project)))
+      else:
+        lines.append("%s : %s" % (_getpath(project), project.name))
 
     lines.sort()
     print('\n'.join(lines))
-
-  def FindProjects(self, args):
-    result = []
-    for project in self.GetProjects(''):
-      for arg in args:
-        pattern = re.compile(r'%s' % arg, re.IGNORECASE)
-        if pattern.search(project.name) or pattern.search(project.relpath):
-          result.append(project)
-          break
-    result.sort(key=lambda project: project.relpath)
-    return result
diff --git a/subcmds/overview.py b/subcmds/overview.py
index 418459a..eed8cf2 100644
--- a/subcmds/overview.py
+++ b/subcmds/overview.py
@@ -42,7 +42,7 @@
     all_branches = []
     for project in self.GetProjects(args):
       br = [project.GetUploadableBranch(x)
-            for x in project.GetBranches().keys()]
+            for x in project.GetBranches()]
       br = [x for x in br if x]
       if opt.current_branch:
         br = [x for x in br if x.name == project.CurrentBranch]
diff --git a/subcmds/stage.py b/subcmds/stage.py
index ff15ee0..2884976 100644
--- a/subcmds/stage.py
+++ b/subcmds/stage.py
@@ -49,7 +49,7 @@
       self.Usage()
 
   def _Interactive(self, opt, args):
-    all_projects = filter(lambda x: x.IsDirty(), self.GetProjects(args))
+    all_projects = [p for p in self.GetProjects(args) if p.IsDirty()]
     if not all_projects:
       print('no projects have uncommitted modifications', file=sys.stderr)
       return
@@ -98,9 +98,9 @@
           _AddI(all_projects[a_index - 1])
           continue
 
-      p = filter(lambda x: x.name == a or x.relpath == a, all_projects)
-      if len(p) == 1:
-        _AddI(p[0])
+      projects = [p for p in all_projects if a in [p.name, p.relpath]]
+      if len(projects) == 1:
+        _AddI(projects[0])
         continue
     print('Bye.')
 
diff --git a/subcmds/status.py b/subcmds/status.py
index cce00c8..9810337 100644
--- a/subcmds/status.py
+++ b/subcmds/status.py
@@ -21,10 +21,15 @@
   import dummy_threading as _threading
 
 import glob
+try:
+  # For python2
+  import StringIO as io
+except ImportError:
+  # For python3
+  import io
 import itertools
 import os
 import sys
-import StringIO
 
 from color import Coloring
 
@@ -142,7 +147,7 @@
       for project in all_projects:
         sem.acquire()
 
-        class BufList(StringIO.StringIO):
+        class BufList(io.StringIO):
           def dump(self, ostream):
             for entry in self.buflist:
               ostream.write(entry)
@@ -182,7 +187,7 @@
       try:
         os.chdir(self.manifest.topdir)
 
-        outstring = StringIO.StringIO()
+        outstring = io.StringIO()
         self._FindOrphans(glob.glob('.*') + \
             glob.glob('*'), \
             proj_dirs, proj_dirs_parents, outstring)
diff --git a/subcmds/sync.py b/subcmds/sync.py
index 6c903ff..8fb9488 100644
--- a/subcmds/sync.py
+++ b/subcmds/sync.py
@@ -24,8 +24,24 @@
 import subprocess
 import sys
 import time
-import urlparse
-import xmlrpclib
+try:
+  # For python3
+  import urllib.parse
+except ImportError:
+  # For python2
+  import imp
+  import urlparse
+  urllib = imp.new_module('urllib')
+  urllib.parse = urlparse
+try:
+  # For python3
+  import xmlrpc.client
+except ImportError:
+  # For python2
+  import imp
+  import xmlrpclib
+  xmlrpc = imp.new_module('xmlrpc')
+  xmlrpc.client = xmlrpclib
 
 try:
   import threading as _threading
@@ -228,6 +244,9 @@
     # We'll set to true once we've locked the lock.
     did_lock = False
 
+    if not opt.quiet:
+      print('Fetching project %s' % project.name)
+
     # Encapsulate everything in a try/except/finally so that:
     # - We always set err_event in the case of an exception.
     # - We always make sure we call sem.release().
@@ -274,6 +293,8 @@
     if self.jobs == 1:
       for project in projects:
         pm.update()
+        if not opt.quiet:
+          print('Fetching project %s' % project.name)
         if project.Sync_NetworkHalf(
             quiet=opt.quiet,
             current_branch_only=opt.current_branch_only,
@@ -372,6 +393,13 @@
       print('\nerror: Exited sync due to gc errors', file=sys.stderr)
       sys.exit(1)
 
+  def _ReloadManifest(self, manifest_name=None):
+    if manifest_name:
+      # Override calls _Unload already
+      self.manifest.Override(manifest_name)
+    else:
+      self.manifest._Unload()
+
   def UpdateProjectList(self):
     new_project_paths = []
     for project in self.GetProjects(None, missing_ok=True):
@@ -486,7 +514,7 @@
                   file=sys.stderr)
           else:
             try:
-              parse_result = urlparse.urlparse(manifest_server)
+              parse_result = urllib.parse(manifest_server)
               if parse_result.hostname:
                 username, _account, password = \
                   info.authenticators(parse_result.hostname)
@@ -504,7 +532,7 @@
                                                     1)
 
       try:
-        server = xmlrpclib.Server(manifest_server)
+        server = xmlrpc.client.Server(manifest_server)
         if opt.smart_sync:
           p = self.manifest.manifestProject
           b = p.GetBranch(p.CurrentBranch)
@@ -513,8 +541,7 @@
             branch = branch[len(R_HEADS):]
 
           env = os.environ.copy()
-          if (env.has_key('TARGET_PRODUCT') and
-              env.has_key('TARGET_BUILD_VARIANT')):
+          if 'TARGET_PRODUCT' in env and 'TARGET_BUILD_VARIANT' in env:
             target = '%s-%s' % (env['TARGET_PRODUCT'],
                                 env['TARGET_BUILD_VARIANT'])
             [success, manifest_str] = server.GetApprovedManifest(branch, target)
@@ -542,11 +569,11 @@
         else:
           print('error: %s' % manifest_str, file=sys.stderr)
           sys.exit(1)
-      except (socket.error, IOError, xmlrpclib.Fault) as e:
+      except (socket.error, IOError, xmlrpc.client.Fault) as e:
         print('error: cannot connect to manifest server %s:\n%s'
               % (self.manifest.manifest_server, e), file=sys.stderr)
         sys.exit(1)
-      except xmlrpclib.ProtocolError as e:
+      except xmlrpc.client.ProtocolError as e:
         print('error: cannot connect to manifest server %s:\n%d %s'
               % (self.manifest.manifest_server, e.errcode, e.errmsg),
               file=sys.stderr)
@@ -571,7 +598,7 @@
       mp.Sync_LocalHalf(syncbuf)
       if not syncbuf.Finish():
         sys.exit(1)
-      self.manifest._Unload()
+      self._ReloadManifest(opt.manifest_name)
       if opt.jobs is None:
         self.jobs = self.manifest.default.sync_j
     all_projects = self.GetProjects(args,
@@ -596,7 +623,7 @@
       # Iteratively fetch missing and/or nested unregistered submodules
       previously_missing_set = set()
       while True:
-        self.manifest._Unload()
+        self._ReloadManifest(opt.manifest_name)
         all_projects = self.GetProjects(args,
                                         missing_ok=True,
                                         submodules_ok=opt.fetch_submodules)
diff --git a/subcmds/upload.py b/subcmds/upload.py
index 48ee685..a34938e 100644
--- a/subcmds/upload.py
+++ b/subcmds/upload.py
@@ -23,6 +23,11 @@
 from error import HookError, UploadError
 from project import RepoHook
 
+try:
+  input = raw_input
+except NameError:
+  pass
+
 UNUSUAL_COMMIT_THRESHOLD = 5
 
 def _ConfirmManyUploads(multiple_branches=False):
@@ -33,7 +38,7 @@
     print('ATTENTION: You are uploading an unusually high number of commits.')
   print('YOU PROBABLY DO NOT MEAN TO DO THIS. (Did you rebase across '
         'branches?)')
-  answer = raw_input("If you are sure you intend to do this, type 'yes': ").strip()
+  answer = input("If you are sure you intend to do this, type 'yes': ").strip()
   return answer == "yes"
 
 def _die(fmt, *args):