Doc: CG - replace references of Google Code with Sourceforge Allura

[lilypond.git] / scm / scheme-engravers.scm

diff --git a/scm/scheme-engravers.scm b/scm/scheme-engravers.scm
index ccb1fb5b0d1a93b89d08db3e8366d1fee26cbacc..3311ebb7a323144fdc915b7bafc3751acc857468 100644 (file)
--- a/scm/scheme-engravers.scm
+++ b/scm/scheme-engravers.scm
@@ -15,6 +15,12 @@
 ;;;; You should have received a copy of the GNU General Public License
 ;;;; along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 
+(define-public (ly:make-listener callback)
+  "This is a compatibility wrapper for creating a \"listener\" for use
+with @code{ly:add-listener} from a @var{callback} taking a single
+argument.  Since listeners are equivalent to callbacks, this is no
+longer needed."
+  callback)
 
 (define-public (Measure_counter_engraver context)
   "This engraver numbers ranges of measures, which is useful in parts as an