Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

[lilypond.git] / ly / spanners-init.ly

diff --git a/ly/spanners-init.ly b/ly/spanners-init.ly
index 50cf12dbb2d188db45321083b1fd40bd21f0d418..8d8a69444f8815af37d8080a75fdcf6a9a34688c 100644 (file)
--- a/ly/spanners-init.ly
+++ b/ly/spanners-init.ly
@@ -1,4 +1,16 @@
-\version "2.16.0"
+\version "2.19.29"
+
+"\\=" =
+#(define-event-function (id event) (key? ly:event?)
+  (_i "This sets the @code{spanner-id} property of the following
+@var{event} to the given @var{id} (non-negative integer or symbol).
+This can be used to tell LilyPond how to connect overlapping
+or parallel slurs or phrasing slurs within a single @code{Voice}.
+@lilypond[quote,verbatim]
+\\fixed c' { c\\=1( d\\=2( e\\=1) f\\=2) }
+@end lilypond\n")
+  (set! (ly:music-property event 'spanner-id) id)
+  event)
 
 startGroup = #(make-span-event 'NoteGroupingEvent START)
 stopGroup = #(make-span-event 'NoteGroupingEvent STOP)