Can latexdiff-cvs handle RCS tags?

Question

I would like to know if anyone has a nice way of combining latexdiff-rcs with printing actual RCS tags in their document.

For example, I am using CVS to version control a latex document. My document page headers have the RCS tags Revision, Date and Author in the preamble of my tex document,

\usepackage{rcs}

\RCS$Revision: 1.36 $ % or any RCS keyword
\RCS$Date: 2011/11/01 09:53:19 $
\RCS$Author: shaun $
\date{Revision \RCSRevision, \RCSDate, \RCSAuthor}

\fancyhf{}
\chead{Revision \RCSRevision, \RCSDate, \RCSAuthor}
\rhead{\thepage}
\pagestyle{fancy}

If I then use latexdiff-cvs with an earlier revision, latexdiff parses this into,

\RCS\DIFdelbegin \DIFdel{$Revision: 1.26 $ }\DIFdelend \DIFaddbegin
\DIFadd{$Revision: 1.27 $ }\DIFaddend % or any RCS keyword
\RCS\DIFdelbegin \DIFdel{$Date: 2011/03/08 08:22:24 $
}\DIFdelend \DIFaddbegin \DIFadd{$Date: 2011/04/29 06:50:24 $
}\DIFaddend \RCS$Author: shaun $

Which doesn't really compile the page header at all. However, if latexdiff gave me this,

\RCS$Revision: \DIFdelbegin \DIFdel{1.26}\DIFdelend \DIFaddbegin \DIFadd{1.27} \DIFaddend $ % or any RCS keyword
\RCS$date: \DIFdelbegin \DIFdel{2011/03/08 08:22:24}\DIFdelend \DIFaddbegin \DIFadd{2011/04/29 06:50:24}\DIFaddend $
\RCS$Author: shaun $

Then it compiles very nicely, and looks good.

Answer 1

I do not use rcs.sty exactly because of this problem. Instead I put

\date{$ $Revision: 1.11 $ $ $ $Date: 2009-02-26 22:25:59 $ $}

which parses to

\DIFaddbegin \date{$ $Revision: 1.11 $ $ $ $Date: 2009-02-26 22:25:59 $ $}
\DIFaddend \DIFdelbegin %DIFDELCMD < \date{$ $Revision: 1.10 $ $ $ $Date: 2009-02-12 18:49:04 $ $}
%DIFDELCMD < %%%

You can do the same with your headers, I think, like this:

\documentclass{article}
\usepackage{fancyhdr,lipsum}
\def\Revision{$ $Revision: 1.2 $ $}
\lhead{\Revision}
\pagestyle{fancy}
\begin{document}
Added line

\lipsum
\end{document}