Add --force-polling flag to server. Closes #730. Closes #644

CHANGELOG.md

@@ -7,6 +7,7 @@ Master
 * Avoid looking in binary files for frontmatter. #728
 * Allow nested i18n files. #725
 * Better adapt to Rack interface. #709
+* Add --force-polling flag. #730, #644
 
 3.0.9
 ====

middleman-core/lib/middleman-core/cli/server.rb

@@ -29,7 +29,7 @@ module Middleman::Cli
       :type    => :string,
       :default => false,
       :desc    => 'Print instrument messages'
-    method_option "disable-watcher",
+    method_option :disable_watcher,
       :type    => :boolean,
       :default => false,
       :desc    => 'Disable the file change and delete watcher process'
@@ -41,6 +41,10 @@ module Middleman::Cli
       :type    => :string,
       :default => false,
       :desc    => 'Additional paths to auto-reload when files change'
+    method_option :force_polling,
+      :type    => :boolean,
+      :default => false,
+      :desc    => 'Force file watcher into polling mode'
 
     # Start the server
     def server
@@ -60,8 +64,9 @@ module Middleman::Cli
         :environment       => options["environment"],
         :debug             => options["verbose"],
         :instrumenting     => options["instrument"],
-        :"disable-watcher" => options["disable-watcher"],
-        :reload_paths      => options["reload_paths"]
+        :disable_watcher   => options["disable_watcher"],
+        :reload_paths      => options["reload_paths"],
+        :force_polling     => options["force_polling"]
       }
 
       puts "== The Middleman is loading"

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

@@ -81,14 +81,14 @@ module Middleman
       end
 
       def start_file_watcher
-        return if @options[:"disable-watcher"]
+        return if @options[:disable_watcher]
 
         first_run = !@listener
 
         if first_run
           # Watcher Library
           require "listen"
-          @listener = Listen.to(Dir.pwd, :relative_paths => true)
+          @listener = Listen.to(Dir.pwd, :relative_paths => true, :force_polling => @options[:force_polling])
         end
 
         @listener.change do |modified, added, removed|