Issue 4611: Don't give RepeatTieColumn a `cause' event

Rationale: the cause is used for point-and-click information and for
stuff like \parenthesize, and a RepeatTieColumn does not have metrics
that would be useful for that.  In particular, this causes code like

{ c'1-\parenthesize\repeatTie }

to compile without spurious parens and error messages.

1 files changed, 11 insertions, 0 deletions

diff --git a/input/regression/repeat-tie-parenthesize.ly b/input/regression/repeat-tie-parenthesize.ly
new file mode 100644
index 0000000000..1d71c47694
--- /dev/null
+++ b/input/regression/repeat-tie-parenthesize.ly
@@ -0,0 +1,11 @@
+\version "2.19.28"
+
+\header {
+  texidoc = "A @code{\\repeatTie} may be parenthesized."
+}
+
+\layout {
+  ragged-right = ##t
+}
+
+{ c'1-\parenthesize \repeatTie }