Installing 'update-copyright' on PQM

[Martin Pool]

As it happens an example of this just came up in Vincent's cleanup
branch <https://code.edge.launchpad.net/~vila/bzr/cleanup/+merge/28306>:

On 24 June 2010 04:37, Vincent Ladeuil <v.ladeuil+lp at free.fr> wrote:
> === modified file 'bzrlib/annotate.py'
> --- bzrlib/annotate.py  2010-06-04 03:09:35 +0000
> +++ bzrlib/annotate.py  2010-06-23 18:34:40 +0000
> @@ -1,4 +1,4 @@
> -# Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Canonical Ltd
> +# Copyright (C) 2005-2010 Canonical Ltd
>  #
>  # This program is free software; you can redistribute it and/or modify
>  # it under the terms of the GNU General Public License as published by

I had written some small amount of Python code for Bazaar in 2004, and
other people had written things that merged into Bazaar.  I don't know
off hand if any of that code still exists in annotate.py, but you
probably don't know that either.  It is a bit icky that
update_copyright (I presume) is changing this header even when Vincent
is making no other overall changes to this file.

emacs has an update-copyright hook function that does what I described
above: add the current year if it's not already listed.

-- 
Martin