Add regression test for 'Fix #527.'

diff --git a/input/regression/grace-end-2.ly b/input/regression/grace-end-2.ly
new file mode 100644 (file)
index 0000000..b71def6
--- /dev/null
+++ b/input/regression/grace-end-2.ly
@@ -0,0 +1,8 @@
+
+\header {
+  texidoc = "Grace notes at the end of an expression don't cause crashes."
+  }
+
+\version "2.11.35"
+
+{ e' \acciaccatura <<  e'8  \\  cis'  >>  }