959f94b06c
This fixes a regression in the patch "return multiple tag values per song": even when the song has values for the specified tag type, the empty string gets added to the set, because the "return" was removed. This patch adds a flag which remembers whether at least one value was found.
Music Player Daemon (MPD) http://www.musicpd.org A daemon for playing music of various formats. Music is played through the server's audio device. The daemon stores info about all available music, and this info can be easily searched and retrieved. Player control, info retrieval, and playlist management can all be managed remotely. For basic installation information see the INSTALL file. MPD is released under the GNU General Public License version 2, which is distributed in the COPYING file. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.