Add regtest for 1376 ambitus accidentals.

diff --git a/input/regression/ambitus.ly b/input/regression/ambitus.ly
index 03c6a776fbeb89de671ed5518cb94a505632783b..ea715f0e994e7baa093af712033fc926d2c2c9ad 100644 (file)
--- a/input/regression/ambitus.ly
+++ b/input/regression/ambitus.ly
@@ -1,10 +1,12 @@
-\version "2.12.0"
+\version "2.13.47"
 
 \header {
   texidoc = "Ambitus indicate pitch ranges for voices.
 
 Accidentals only show up if they're not part of key
 signature.  @code{AmbitusNoteHead} grobs also have ledger lines.
+The noteheads are printed in overstrike, so there's only one
+visible; the accidentals are prevented from colliding. 
 "
 }
 
@@ -25,4 +27,8 @@ signature.  @code{AmbitusNoteHead} grobs also have ledger lines.
     \key d \major
     cis as'
   }
+  \new Staff \relative c' {
+    \time 2/4
+    c4 cis
+  }
 >>