post-update script to update wc - suggestions welcome

[Sam Vilain <samv@xxxxxxxxxxx>]

#!/bin/sh
#
# An example hook script to prepare a packed repository for use over
# dumb transports.
#
# To enable this hook, make this file executable by "chmod +x post-update".

git-update-server-info

ref=$1
active=`git-symbolic-ref HEAD`
if [ "$ref" = "$active" ]
then
  echo "Pushing to checked out branch - updating working copy" >&2
  export GIT_DIR=`cd $GIT_DIR; pwd`
  cd ..
  success=
  if git-diff-files
  then
    git-diff-index -z -R --name-status HEAD | perl -n0 -le \
	'if ($z^=1) {
		$status=$_;
	 }
	 else {
        	$filename=$_;
		printf STDERR "$status\t$filename\n";
		if($status eq "D"){
			unlink($filename)
				or die("unlink($filename) failed; $!")
		}
         }' &&
    git-reset --hard HEAD && success=1
  fi
  if [ -z "$success" ]
  then
    (
    echo "Non-bare repository checkout is not clean - not updating it"
    echo "However I AM going to update the index.  Any in-progress commit"
    echo "happening in that checkout will be thrown away, but on the bright"
    echo "side this is probably the least confusing thing for us to do and"
    echo "at least we're not throwing any files somebody has changed away"
    git-reset --mixed HEAD
    echo 
    echo "This is the new status of the upstream working copy:"
    git-status
    ) >&2
  fi
fi
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