From e3214c23a33464c318f175d0e9360b13da0b428d Mon Sep 17 00:00:00 2001
From: Parker Moore <parkrmoore@gmail.com>
Date: Thu, 7 Jul 2016 13:37:09 -0700
Subject: [PATCH] Add missing elements to Excerpt which delegate to its
 Document

---
 lib/jekyll/drops/drop.rb | 4 ++--
 lib/jekyll/excerpt.rb    | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/jekyll/drops/drop.rb b/lib/jekyll/drops/drop.rb
index dfb35d20..6227213e 100644
--- a/lib/jekyll/drops/drop.rb
+++ b/lib/jekyll/drops/drop.rb
@@ -102,8 +102,8 @@ module Jekyll
       #
       # Returns true if the given key is present
       def key?(key)
-        if self.class.mutable && @mutations.key?(key)
-          true
+        if self.class.mutable
+          @mutations.key?(key)
         else
           respond_to?(key) || fallback_data.key?(key)
         end
diff --git a/lib/jekyll/excerpt.rb b/lib/jekyll/excerpt.rb
index 2d53307e..c181cb68 100644
--- a/lib/jekyll/excerpt.rb
+++ b/lib/jekyll/excerpt.rb
@@ -7,7 +7,8 @@ module Jekyll
     attr_writer   :output
 
     def_delegators :@doc, :site, :name, :ext, :relative_path, :extname,
-                          :render_with_liquid?, :collection, :related_posts, :url
+                          :render_with_liquid?, :collection, :related_posts,
+                          :url, :next_doc, :previous_doc
 
     # Initialize this Excerpt instance.
     #