- version_n_root=`git rev-list $version_base --not $version_tag --count`
- version_n_branch=`git rev-list HEAD --not $version_base --count`
+ # Using wc -l instead of --count argument to rev-list because
+ # pre-1.7.2 Gits are still common out in the wilderness.
+ version_n_root=`git rev-list $version_base --not $version_tag | wc -l`
+ version_n_branch=`git rev-list HEAD --not $version_base | wc -l`