Attachment #145472: The patch described. for bug #212573

			-I | --info-installed) MODE="showinstdesc";;

# Works like showdesc() but displays only descriptions of which the appropriate

# ebuild is installed and prints the name of those packages.

showinstdesc() {

	local descdir

	local current_desc

	local args

	local foundone=0

	args="${*:-*}"

	if [ -z "${SCOPE}" ]; then

		SCOPE="global" showinstdesc ${args}

		echo

		SCOPE="local" showinstdesc ${args}

		return

	fi

	descdir="$(get_portdir)/profiles"

	[ "${SCOPE}" == "global" ] && echo "global use flags (searching: ${args})"

	[ "${SCOPE}" == "local" ] && echo "local use flags (searching: ${args})"

	echo "************************************************************"

	if [ "${args}" == "*" ]; then

		args="$(get_useflaglist | sort -u)"

	fi

	set ${args}

	while [ -n "${1}" ]; do

		if [ "${SCOPE}" == "global" ]; then

			desc=`grep "^${1}  *-" "${descdir}/use.desc"`

			if [ ! -z "$desc" ]; then

				get_flagstatus "${1}"

				echo $desc

				# get list of installed packages matching this USE flag.

				# equery does only display package names if it is called in

				# backtick operators

				packages="`equery hasuse -i ${1}`"

				echo -n "Installed packages matching this USE flag: "

				if [ -z "$packages" ]; then

					foundone=0

					echo "none"

				else

					foundone=1

					echo 

					echo $packages | tr ' ' '\n' | while read line; do

						# cut off package's version information

						echo $line | sed  -e 's/\-[0-9].*$//' 

					done

				fi

			fi

		fi

		# local flags are a bit more complicated as there can be multiple 

		# entries per flag and we can't pipe into printf

		if [ "${SCOPE}" == "local" ]; then

			OIFS="$IFS"

			IFS=$'\n'

			for line in `grep ":${1}  *-" "${descdir}/use.local.desc" \

			| sed -e "s/^\([^:]\+\):\(${1}\) *- *\(.\+\)/\1|\2|\3/g"`; do

				pkg="$(echo $line | cut -d\| -f 1)"

				flag="$(echo $line | cut -d\| -f 2)"

				desc="$(echo $line | cut -d\| -f 3)"

				# print name only if package is installed

				if [ `eix -Ie ${pkg} | wc -l` -gt 1 ]; then

					foundone=1

					get_flagstatus "${flag}"

					printf "%s (%s):\n%s\n\n" "${flag}" "${pkg}" "${desc}"

				fi

			done

			IFS="$OIFS"

		fi

		shift

	done

	if [ ${foundone} == 0 ]; then

		echo "no matching entries found"

	fi

}