if [ ! -f emacs-22.tar.bz2 ]; then
env CVS_RSH=ssh cvs -z3 -d :ext:anoncvs@savannah.gnu.org:/cvsroot/emacs checkout -P emacs
[ ! -d emacs-22 ] && mkdir emacs-22
(cd emacs; tar cf - .) | (cd emacs-22; tar xvf -)
tar cvjf emacs-22.tar.bz2 emacs-22
else
tar xvjf emacs-22.tar.bz2
fi