diff --git a/contrib/hg-ssh b/contrib/hg-ssh
--- a/contrib/hg-ssh
+++ b/contrib/hg-ssh
@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 #
 # Copyright 2005-2007 by Intevation GmbH <intevation@intevation.de>
+#
 # Author(s):
 # Thomas Arendsen Hein <thomas@intevation.de>
 #
diff --git a/hgext/children.py b/hgext/children.py
--- a/hgext/children.py
+++ b/hgext/children.py
@@ -1,6 +1,7 @@
 # Mercurial extension to provide the 'hg children' command
 #
 # Copyright 2007 by Intevation GmbH <intevation@intevation.de>
+#
 # Author(s):
 # Thomas Arendsen Hein <thomas@intevation.de>
 #
diff --git a/hgext/churn.py b/hgext/churn.py
--- a/hgext/churn.py
+++ b/hgext/churn.py
@@ -5,6 +5,7 @@
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''command to show certain statistics about revision history'''
 
 from mercurial.i18n import _
diff --git a/hgext/convert/__init__.py b/hgext/convert/__init__.py
--- a/hgext/convert/__init__.py
+++ b/hgext/convert/__init__.py
@@ -4,6 +4,7 @@
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''converting foreign VCS repositories to Mercurial'''
 
 import convcmd
diff --git a/hgext/fetch.py b/hgext/fetch.py
--- a/hgext/fetch.py
+++ b/hgext/fetch.py
@@ -4,6 +4,7 @@
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''pulling, updating and merging in one command'''
 
 from mercurial.i18n import _
diff --git a/hgext/graphlog.py b/hgext/graphlog.py
--- a/hgext/graphlog.py
+++ b/hgext/graphlog.py
@@ -4,6 +4,7 @@
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''show revision graphs in terminal windows
 
 This extension adds a --graph option to the incoming, outgoing and log
diff --git a/hgext/hgk.py b/hgext/hgk.py
--- a/hgext/hgk.py
+++ b/hgext/hgk.py
@@ -4,6 +4,7 @@
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''browsing the repository in a graphical way
 
 The hgk extension allows browsing the history of a repository in a
diff --git a/hgext/parentrevspec.py b/hgext/parentrevspec.py
--- a/hgext/parentrevspec.py
+++ b/hgext/parentrevspec.py
@@ -4,6 +4,7 @@
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
+
 '''\
 use suffixes to refer to ancestor revisions
 
diff --git a/hgext/win32mbcs.py b/hgext/win32mbcs.py
--- a/hgext/win32mbcs.py
+++ b/hgext/win32mbcs.py
@@ -8,6 +8,7 @@
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
 #
+
 """allow to use MBCS path with problematic encoding.
 
 Some MBCS encodings are not good for some path operations (i.e.
diff --git a/mercurial/hbisect.py b/mercurial/hbisect.py
--- a/mercurial/hbisect.py
+++ b/mercurial/hbisect.py
@@ -2,6 +2,7 @@
 #
 # Copyright 2007 Matt Mackall
 # Copyright 2005, 2006 Benoit Boissinot <benoit.boissinot@ens-lyon.org>
+#
 # Inspired by git bisect, extension skeleton taken from mq.py.
 #
 # This software may be used and distributed according to the terms of the