From e11427c369beca73dea2d3851450606894ae24b9 Mon Sep 17 00:00:00 2001
From: Tim Beyer <35711942+TimFelixBeyer@users.noreply.github.com>
Date: Sat, 24 Feb 2024 10:27:43 +0100
Subject: [PATCH] Add regression test

---
 music21/harmony.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/music21/harmony.py b/music21/harmony.py
index 48dd8fca3..ab8611636 100644
--- a/music21/harmony.py
+++ b/music21/harmony.py
@@ -3162,6 +3162,12 @@ def testExpressSusUsingAlterations(self):
 
         self.assertEqual(ch1.pitches, ch2.pitches)
 
+    def testDoubledCharacters(self):
+        ch1 = ChordSymbol('Co omit5')
+        ch2 = ChordSymbol('Cdim omit5')
+
+        self.assertEqual(ch1.pitches, ch2.pitches)
+
     def x_testPower(self):
         '''
         power chords should not have inversions