Minor tweak to #1695

middleman-core/lib/middleman-core/application.rb

@@ -398,7 +398,6 @@ module Middleman
       execute_callbacks(:before_shutdown)
     end
 
-
     # Set attributes (global variables)
     #
     # @deprecated Prefer accessing settings through "config".

middleman-core/lib/middleman-core/file_renderer.rb

@@ -37,7 +37,8 @@ module Middleman
       engine = extension[1..-1].to_sym
 
       # Store last engine for later (could be inside nested renders)
-      context.current_engine, engine_was = engine, context.current_engine
+      context.current_engine = engine
+      engine_was = context.current_engine
 
       # Save current buffer for later
       buf_was = context.save_buffer

middleman-core/lib/middleman-core/preview_server/server_information_callback_proxy.rb

@@ -21,7 +21,7 @@ module Middleman
         ).to_bind_addresses
 
         @port           = server_information.port
-        @server_name    = server_information.server_name.dup unless server_information.server_name == nil
+        @server_name    = server_information.server_name.dup unless server_information.server_name.nil?
 
         @site_addresses = ServerUrl.new(
           hosts: server_information.site_addresses,

middleman-core/lib/middleman-core/sitemap/resource.rb

@@ -133,9 +133,7 @@ module Middleman
           locs[:current_path] ||= destination_path
 
           # Certain output file types don't use layouts
-          unless opts.key?(:layout)
-            opts[:layout] = false if ext != '.html'
-          end
+          opts[:layout] = false unless opts.key?(:layout) || !ext != '.html'
 
           renderer = ::Middleman::TemplateRenderer.new(@app, file_descriptor[:full_path].to_s)
           renderer.render(locs, opts)

middleman-core/lib/middleman-core/sources/source_watcher.rb

@@ -182,14 +182,8 @@ module Middleman
     # @return [void]
     Contract Any
     def poll_once!
-      removed = @files.keys
-
-      updated = []
-
-      ::Middleman::Util.all_files_under(@directory.to_s).each do |filepath|
-        removed.delete(filepath)
-        updated << filepath
-      end
+      updated = ::Middleman::Util.all_files_under(@directory.to_s)
+      removed = @files.keys.reject { |p| updated.include?(p) }
 
       update(updated, removed)
 
@@ -314,16 +308,10 @@ module Middleman
     # @return [Array] All related file paths, not including the source file paths.
     Contract ArrayOf[String] => ArrayOf[String]
     def find_related_files(files)
-      files.map do |file|
-        related_files = []
-
-        # If any SASS file changes, reload all non-partials
-        if file =~ /\.(sass|scss)$/
-          related_files |= Dir[File.join(@directory, app.config[:css_dir], '**/[^_]*.{scss,sass}')]
-        end
-
-        related_files
-      end.flatten.uniq - files
+      files.flat_map do |file|
+        # If any partial file changes, reload all non-partials
+        Dir[File.join(@directory, app.config[:source], "**/[^_]*.#{File.extname(file)}")] if File.basename(file).start_with?('_')
+      end.compact.uniq - files
     end
   end
 end

middleman-core/lib/middleman-core/template_context.rb

@@ -42,7 +42,8 @@ module Middleman
     # @api private
     # @return [String] The old buffer.
     def save_buffer
-      @_out_buf, buf_was = '', @_out_buf
+      buf_was = @_out_buf
+      @_out_buf = ''
       buf_was
     end