From cf56248d146c5f80218e3447384855985d3cc25e Mon Sep 17 00:00:00 2001
From: Ashkan Parsa <ashkan.parsa@icloud.com>
Date: Wed, 9 Feb 2022 14:08:14 -0800
Subject: [PATCH] Bug fix

part needs to be check for any character before selecting index 0
---
 SymSpell/SymSpell.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SymSpell/SymSpell.cs b/SymSpell/SymSpell.cs
index 6014781..c640ea1 100644
--- a/SymSpell/SymSpell.cs
+++ b/SymSpell/SymSpell.cs
@@ -1124,7 +1124,7 @@ public List<SuggestItem> LookupCompound(string input, int editDistanceMax)
                     topResult = results[0].term;
                     //v6.7
                     //retain/preserve upper case 
-                    if (Char.IsUpper(part[0]))
+                    if (part.Any() && Char.IsUpper(part[0]))
                     {
                         char[] a = topResult.ToCharArray();
                         a[0] = char.ToUpper(topResult[0]);