From 0e991095f14c285e482b4ce2701af50fafb08431 Mon Sep 17 00:00:00 2001
From: Thomas Andrew <tja523@york.ac.uk>
Date: Thu, 26 Oct 2017 18:54:48 +0100
Subject: [PATCH] Fix issue where keychain github credentials wouldn't work

---
 Library/Homebrew/utils/github.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/utils/github.rb b/Library/Homebrew/utils/github.rb
index e73951c8d7..be9bf4dd30 100644
--- a/Library/Homebrew/utils/github.rb
+++ b/Library/Homebrew/utils/github.rb
@@ -87,8 +87,8 @@ module GitHub
   def api_credentials_type
     token, username = api_credentials
     return :none if !token || token.empty?
-    return :keychain if !username || username.empty?
-    :environment
+    return :environment if !username || username.empty?
+    :keychain
   end
 
   def api_credentials_error_message(response_headers, needed_scopes)