Forcing rewrite of files in working tree

[Andy Parkins <andyparkins@gmail.com>]

Hello,

I want to write a little recipe in a Makefile that ensures the $Id$ field in a 
series of text files is correct.  In case it's relevant, I'm including a load 
of asciidoc files as subsections into one master file; each file has a $Id$ 
field in the header, which very nicely prints out at the start of each 
section.  However, the $Id$ field is only written on checkout (not on checkin 
for fairly obvious reasons).  That means that for any files I've changed, the 
$Id$ is wrong.  Before I generate output using ASCIIdoc I'd like to ensure 
the $Id$ is correct.

How do I do it?

The only method I've found is to delete the file in the work tree then do 
git-checkout again.  Even with -f, if the file is not changed git doesn't 
perform a checkout again, so git-checkout -f is not sufficient.  I assume I 
can do what I want with some clever plumbing, but I don't know any 
plumbing. :-)



Andy
-- 
Dr Andy Parkins, M Eng (hons), MIET
andyparkins@gmail.com