From 163043de3485cff161ad0ea0c852e34bccdc6bba Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sat, 15 Jan 2011 08:17:40 -0700
Subject: [PATCH] Fix #8365 (Capitalize not working)

---
 src/calibre/utils/icu.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/utils/icu.py b/src/calibre/utils/icu.py
index 659984e7f9..f17ff1b17f 100644
--- a/src/calibre/utils/icu.py
+++ b/src/calibre/utils/icu.py
@@ -80,7 +80,7 @@ def icu_case_sensitive_strcmp(collator, a, b):
 
 def icu_capitalize(s):
     s = lower(s)
-    return s.replace(s[0], upper(s[0]), 1)
+    return s.replace(s[0], upper(s[0]), 1) if s else s
 
 load_icu()
 load_collator()