Issue 2445: Add measure counter to LilyPond

input/regression/measure-counter-broken.ly

Index: input/regression/measure-counter-broken.ly
diff --git a/input/regression/measure-counter-broken.ly b/input/regression/measure-counter-broken.ly
new file mode 100644
index 0000000000000000000000000000000000000000..06e1508a2dc268a2a9805728ae4487c7f6ec41fe
--- /dev/null
+++ b/input/regression/measure-counter-broken.ly
@@ -0,0 +1,30 @@
+\version "2.17.6"
+
+\header {
+  texidoc = "Measures split across line breaks may be numbered in a measure
+count.  Each segment receives a number.  The first number has its ordinary
+appearance, but numbers after the break are enclosed in parentheses."
+}
+
+\layout {
+  indent = 0
+  ragged-right = ##t
+}
+
+\relative c' {
+  \startMeasureCount
+  a4 b c d
+  a4 b
+  \bar ""
+  \break
+  c4 d
+  a4 b c d
+  \stopMeasureCount
+}
+
+\layout {
+  \context {
+    \Staff
+    \consists #Measure_counter_engraver
+  }
+}