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#!/bin/sh

inst_prefix=$(
	IFS=:
	for p in $PATH
	do
		probed=${p%/git-active/bin}
		if test "$probed" != "$p"
		then
			echo "$probed"
			exit
		fi
	done
	echo $HOME
)

LF='
'
output=
for v in maint master next jch seen
do
	installed=$(
		test -f "$inst_prefix/git-$v/bin/git" &&
		"$inst_prefix/git-$v/bin/git" version
	)
	dirty=
	if version=$(expr "$installed" : '.*\.g\([0-9a-f]*\)$')
	then
		:
	elif version=$(expr "$installed" : '.*\.g\([0-9a-f]*\)\.dirty$')
	then
		dirty=" (with changes)"
	elif version=v$(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=
		if test -z "$dirty"
		then
			installed=
		else
			installed="	$installed$dirty"
		fi
	elif test -z "$version"
	then
		in="[41;37m" out="[m"
		installed="	none"
	else
		installed=$(git describe --long $version)
		case "$dirty" in
		'')
			;;
		?*)
			installed="$installed$dirty"
		esac
		in="[41;37m" out="[m" installed="	$installed"
	fi
	output="$output${output:+$LF}"
	output="$output$in$v$out$installed	$(git describe --long refs/heads/$v)"
done

echo "$output"
echo "$output" | sha1sum | sed -e 's/  .*//'