From 2c82a01018ed244a84539b317f0e22534c902e45 Mon Sep 17 00:00:00 2001
From: Brendan Forster <brendan@github.com>
Date: Fri, 17 Jul 2015 07:53:18 +0930
Subject: [PATCH] rework the rules

---
 Octokit/Helpers/StringExtensions.cs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Octokit/Helpers/StringExtensions.cs b/Octokit/Helpers/StringExtensions.cs
index 33008b3e15..670eddf244 100644
--- a/Octokit/Helpers/StringExtensions.cs
+++ b/Octokit/Helpers/StringExtensions.cs
@@ -102,11 +102,14 @@ static IEnumerable<string> SplitUpperCase(this string source)
             yield return new String(letters, wordStartIndex, letters.Length - wordStartIndex);
         }
 
-        static Regex nameWithOwner = new Regex("[a-zA-Z.]{1,}/[a-zA-Z.]{1,}"
+        // the rule:
+        // Username may only contain alphanumeric characters or single hyphens
+        // and cannot begin or end with a hyphen
+        static readonly Regex nameWithOwner = new Regex("[a-z0-9.-]{1,}/[a-z0-9.-]{1,}", 
 #if (!PORTABLE && !NETFX_CORE)
-, RegexOptions.Compiled
+            RegexOptions.Compiled | 
 #endif
-);
+            RegexOptions.IgnoreCase);
 
         internal static bool IsNameWithOwnerFormat(this string input)
         {