git/V

#!/bin/sh

for v in maint master next pu jch
do
	installed=$($HOME/git-$v/bin/git version)
	dirty=
	if version=$(expr "$installed" : '.*\.g\([0-9a-f]*\)$')
	then
		:
	elif version=$(expr "$installed" : '.*\.g\([0-9a-f]*\)\.dirty$')
	then
		dirty=t
	elif version=v$(expr "$installed" : \
			'git version \(.*\)\.rc[0-9]*$')
	then
		version="$version"-$(expr "$installed" : \
			'git version .*\.\(rc[0-9]*\)$')
	else
		version=v$(expr "$installed" : 'git version \(.*\)')
	fi

	version=$(git rev-parse --verify "$version^0" 2>/dev/null)
	revision=$(git show-ref -s --verify "refs/heads/$v")
	if test "z$version" = "z$revision"
	then
		in= out=
		installed=${dirty:+" (with changes)"}
	else
		installed=$(git describe $version)
		case "$dirty" in
		t)
			installed="$installed.dirty"
		esac
		in="" out="" installed="	$installed"
	fi
	echo "$in$v$out	$(git describe refs/heads/$v)$installed"
done