From 9f2cb32c2fede9a6344fd4ddbc0738e5530ac517 Mon Sep 17 00:00:00 2001
From: David Chelimsky <dchelimsky@gmail.com>
Date: Sat, 10 Aug 2013 09:42:46 +0200
Subject: [PATCH] minor optimization

* Array(list) covers all necessary cases

    $ irb
    2.0.0p0 :001 > Array(nil)
     => []
    2.0.0p0 :002 > Array(:foo)
     => [:foo]
    2.0.0p0 :003 > Array([:foo,:bar])
     => [:foo, :bar]

* Array(list) is considerably faster than list.flatten.compact

    $ time ruby -e "100000.times { [nil].flatten.compact; [:foo].flatten.compact; [[:foo, :bar]].flatten.compact }"
    real 0m0.465s
    user 0m0.461s
    sys  0m0.003s
    $ time ruby -e "100000.times { Array(nil); Array(:foo); Array([:foo, :bar]) }"
    real 0m0.117s
    user 0m0.113s
    sys  0m0.003s
---
 lib/rspec/core/configuration.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/rspec/core/configuration.rb b/lib/rspec/core/configuration.rb
index 81399f923f..899c989a4c 100644
--- a/lib/rspec/core/configuration.rb
+++ b/lib/rspec/core/configuration.rb
@@ -72,7 +72,7 @@ def self.add_setting(name, opts={})
           define_reader name
           define_predicate_for name
         end
-        [opts[:alias_with]].flatten.compact.each do |alias_name|
+        Array(opts[:alias_with]).each do |alias_name|
           define_aliases(name, alias_name)
         end
       end