Remove code duplication

lib/jekyll/command.rb

@@ -8,5 +8,16 @@ module Jekyll
         dirs += ['*']
       end
     end
+    def self.process_site(site)
+      begin
+        site.process
+      rescue Jekyll::FatalException => e
+        puts
+        puts "ERROR: YOUR SITE COULD NOT BE BUILT:"
+        puts "------------------------------------"
+        puts e.message
+        exit(1)
+      end
+    end
   end
 end

lib/jekyll/commands/build.rb

@@ -20,15 +20,7 @@ module Jekyll
         puts  "            Source: #{source}"
         puts  "       Destination: #{destination}"
         print "      Generating... "
-        begin
-          site.process
-        rescue Jekyll::FatalException => e
-          puts
-          puts "ERROR: YOUR SITE COULD NOT BE BUILT:"
-          puts "------------------------------------"
-          puts e.message
-          exit(1)
-        end
+        self.process_site(site)
         puts "done."
       end
 
@@ -52,15 +44,7 @@ module Jekyll
         dw.add_observer do |*args|
           t = Time.now.strftime("%Y-%m-%d %H:%M:%S")
           print "      Regenerating: #{args.size} files at #{t} "
-          begin
-            site.process
-          rescue Jekyll::FatalException => e
-            puts
-            puts "ERROR: YOUR SITE COULD NOT BE BUILT:"
-            puts "------------------------------------"
-            puts e.message
-            exit(1)
-          end
+          self.process_site(site)
           puts  "...done."
         end