From ac5f1e9039e999a240d865bb7acca465b41a59f1 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 19 Mar 2019 12:35:12 +0530
Subject: [PATCH] ...

---
 src/calibre/gui2/tag_browser/view.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/calibre/gui2/tag_browser/view.py b/src/calibre/gui2/tag_browser/view.py
index 29b79dc47e..b0aa64a641 100644
--- a/src/calibre/gui2/tag_browser/view.py
+++ b/src/calibre/gui2/tag_browser/view.py
@@ -488,7 +488,9 @@ class TagsView(QTreeView):  # {{{
                 if len(n) > 45:
                     n = n[:45] + '...'
                 ans = "'" + n + "'"
-            return ans.replace('&', '&&')
+            if ans:
+                ans = ans.replace('&', '&&')
+            return ans
 
         index = self.indexAt(point)
         self.context_menu = QMenu(self)