From eb1a658b25a1d74104c1abbce9bec6d47400d770 Mon Sep 17 00:00:00 2001
From: Thomas Reynolds <me@tdreyno.com>
Date: Fri, 26 Dec 2014 14:11:58 -0800
Subject: [PATCH] over calling change callbacks which are unnecessary.

---
 middleman-core/lib/middleman-core/sitemap/store.rb | 4 ++--
 middleman-core/lib/middleman-core/sources.rb       | 2 +-
 middleman-core/lib/middleman-core/version.rb       | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/middleman-core/lib/middleman-core/sitemap/store.rb b/middleman-core/lib/middleman-core/sitemap/store.rb
index 067f3f33..04ffd9b9 100644
--- a/middleman-core/lib/middleman-core/sitemap/store.rb
+++ b/middleman-core/lib/middleman-core/sitemap/store.rb
@@ -146,9 +146,9 @@ module Middleman
       # Get the URL path for an on-disk file
       # @param [String] file
       # @return [String]
-      Contract IsA['Middleman::SourceFile'] => String
+      Contract Or[Pathname, IsA['Middleman::SourceFile']] => String
       def file_to_path(file)
-        relative_path = file[:relative_path].to_s
+        relative_path = file.is_a?(Pathname) ? file.to_s : file[:relative_path].to_s
 
         # Replace a file name containing automatic_directory_matcher with a folder
         unless @app.config[:automatic_directory_matcher].nil?
diff --git a/middleman-core/lib/middleman-core/sources.rb b/middleman-core/lib/middleman-core/sources.rb
index 493c6bc0..f7f8bd7f 100644
--- a/middleman-core/lib/middleman-core/sources.rb
+++ b/middleman-core/lib/middleman-core/sources.rb
@@ -339,7 +339,7 @@ module Middleman
           valid_updated = updated_files.select { |f| f[:types].include?(callback[:type]) }
           valid_removed = removed_files.select { |f| f[:types].include?(callback[:type]) }
 
-          callback[:proc].call(valid_updated, valid_removed)
+          callback[:proc].call(valid_updated, valid_removed) unless valid_updated.empty? && valid_removed.empty?
         end
       end
     end
diff --git a/middleman-core/lib/middleman-core/version.rb b/middleman-core/lib/middleman-core/version.rb
index efd6097d..09f63d7d 100644
--- a/middleman-core/lib/middleman-core/version.rb
+++ b/middleman-core/lib/middleman-core/version.rb
@@ -1,5 +1,5 @@
 module Middleman
   # Current Version
   # @return [String]
-  VERSION = '4.0.0.alpha.4' unless const_defined?(:VERSION)
+  VERSION = '4.0.0.alpha.5' unless const_defined?(:VERSION)
 end