1 files changed, 15 insertions, 5 deletions
diff --git a/activesupport/lib/active_support/core_ext/array/access.rb b/activesupport/lib/active_support/core_ext/array/access.rb
index a8f9dddae5..45b89d2705 100644
--- a/activesupport/lib/active_support/core_ext/array/access.rb
+++ b/activesupport/lib/active_support/core_ext/array/access.rb
@@ -5,6 +5,8 @@ class Array
   #   %w( a b c d ).from(2)  # => ["c", "d"]
   #   %w( a b c d ).from(10) # => []
   #   %w().from(0)           # => []
+  #   %w( a b c d ).from(-2) # => ["c", "d"]
+  #   %w( a b c ).from(-10)  # => []
   def from(position)
     self[position, length] || []
   end
@@ -15,39 +17,47 @@ class Array
   #   %w( a b c d ).to(2)  # => ["a", "b", "c"]
   #   %w( a b c d ).to(10) # => ["a", "b", "c", "d"]
   #   %w().to(0)           # => []
+  #   %w( a b c d ).to(-2) # => ["a", "b", "c"]
+  #   %w( a b c ).to(-10)  # => []
   def to(position)
-    first position + 1
+    if position >= 0
+      first position + 1
+    else
+      self[0..position]
+    end
   end
 
   # Equal to <tt>self[1]</tt>.
   #
-  #   %w( a b c d e).second # => "b"
+  #   %w( a b c d e ).second # => "b"
   def second
     self[1]
   end
 
   # Equal to <tt>self[2]</tt>.
   #
-  #   %w( a b c d e).third # => "c"
+  #   %w( a b c d e ).third # => "c"
   def third
     self[2]
   end
 
   # Equal to <tt>self[3]</tt>.
   #
-  #   %w( a b c d e).fourth # => "d"
+  #   %w( a b c d e ).fourth # => "d"
   def fourth
     self[3]
   end
 
   # Equal to <tt>self[4]</tt>.
   #
-  #   %w( a b c d e).fifth # => "e"
+  #   %w( a b c d e ).fifth # => "e"
   def fifth
     self[4]
   end
 
   # Equal to <tt>self[41]</tt>. Also known as accessing "the reddit".
+  #
+  #   (1..42).to_a.forty_two # => 42
   def forty_two
     self[41]
   end