5 files changed, 66 insertions, 11 deletions
diff --git a/railties/lib/rails/tasks/dev.rake b/railties/lib/rails/tasks/dev.rake
new file mode 100644
index 0000000000..4593100465
--- /dev/null
+++ b/railties/lib/rails/tasks/dev.rake
@@ -0,0 +1,14 @@
+namespace :dev do
+  desc 'Toggle development mode caching on/off'
+  task :cache do
+    if File.exist? 'tmp/caching-dev.txt'
+      File.delete 'tmp/caching-dev.txt'
+      puts 'Development mode is no longer being cached.'
+    else
+      FileUtils.touch 'tmp/caching-dev.txt'
+      puts 'Development mode is now being cached.'
+    end
+
+    FileUtils.touch 'tmp/restart.txt'
+  end
+end
diff --git a/railties/lib/rails/tasks/engine.rake b/railties/lib/rails/tasks/engine.rake
index c51524f8f6..e678103f63 100644
--- a/railties/lib/rails/tasks/engine.rake
+++ b/railties/lib/rails/tasks/engine.rake
@@ -4,8 +4,8 @@ task "load_app" do
   end
   task :environment => "app:environment"
 
-  if !defined?(ENGINE_PATH) || !ENGINE_PATH
-    ENGINE_PATH = find_engine_path(APP_RAKEFILE)
+  if !defined?(ENGINE_ROOT) || !ENGINE_ROOT
+    ENGINE_ROOT = find_engine_path(APP_RAKEFILE)
   end
 end
 
diff --git a/railties/lib/rails/tasks/framework.rake b/railties/lib/rails/tasks/framework.rake
index 904b9d9ad6..7601836809 100644
--- a/railties/lib/rails/tasks/framework.rake
+++ b/railties/lib/rails/tasks/framework.rake
@@ -45,7 +45,7 @@ namespace :rails do
         @app_generator ||= begin
           require 'rails/generators'
           require 'rails/generators/rails/app/app_generator'
-          gen = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true },
+          gen = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true, api: !!Rails.application.config.api_only },
             destination_root: Rails.root
           File.exist?(Rails.root.join("config", "application.rb")) ?
             gen.send(:app_const) : gen.send(:valid_const?)
diff --git a/railties/lib/rails/tasks/log.rake b/railties/lib/rails/tasks/log.rake
index 877f175ef3..073f235ec5 100644
--- a/railties/lib/rails/tasks/log.rake
+++ b/railties/lib/rails/tasks/log.rake
@@ -1,5 +1,12 @@
 namespace :log do
-  desc "Truncates all *.log files in log/ to zero bytes (specify which logs with LOGS=test,development)"
+  
+  ## 
+  # Truncates all/specified log files
+  # ENV['LOGS'] 
+  #   - defaults to standard environment log files i.e. 'development,test,production'
+  #   - ENV['LOGS']=all truncates all files i.e. log/*.log
+  #   - ENV['LOGS']='test,development' truncates only specified files
+  desc "Truncates all/specified *.log files in log/ to zero bytes (specify which logs with LOGS=test,development)"
   task :clear do
     log_files.each do |file|
       clear_log_file(file)
@@ -7,15 +14,21 @@ namespace :log do
   end
 
   def log_files
-    if ENV['LOGS']
-      ENV['LOGS'].split(',')
-                  .map    { |file| "log/#{file.strip}.log" }
-                  .select { |file| File.exist?(file) }
-    else
+    if ENV['LOGS'] == 'all'
       FileList["log/*.log"]
+    elsif ENV['LOGS']
+      log_files_to_truncate(ENV['LOGS'])
+    else
+      log_files_to_truncate("development,test,production")
     end
   end
 
+  def log_files_to_truncate(envs)
+    envs.split(',')
+        .map    { |file| "log/#{file.strip}.log" }
+        .select { |file| File.exist?(file) }
+  end
+  
   def clear_log_file(file)
     f = File.open(file, "w")
     f.close
diff --git a/railties/lib/rails/tasks/routes.rake b/railties/lib/rails/tasks/routes.rake
index 1815c2fdc7..939fa59c75 100644
--- a/railties/lib/rails/tasks/routes.rake
+++ b/railties/lib/rails/tasks/routes.rake
@@ -1,7 +1,35 @@
-desc 'Print out all defined routes in match order, with names. Target specific controller with CONTROLLER=x.'
+require 'active_support/deprecation'
+require 'active_support/core_ext/string/strip' # for strip_heredoc
+require 'optparse'
+
+desc 'Print out all defined routes in match order, with names. Target specific controller with --controller option - or its -c shorthand.'
 task routes: :environment do
   all_routes = Rails.application.routes.routes
   require 'action_dispatch/routing/inspector'
   inspector = ActionDispatch::Routing::RoutesInspector.new(all_routes)
-  puts inspector.format(ActionDispatch::Routing::ConsoleFormatter.new, ENV['CONTROLLER'])
+  if ARGV.any?{ |argv| argv.start_with? 'CONTROLLER' }
+    puts <<-eow.strip_heredoc
+      Passing `CONTROLLER` to `bin/rails routes` is deprecated and will be removed in Rails 5.1.
+      Please use `bin/rails routes -c controller_name` instead.
+    eow
+  end
+
+  routes_filter = nil
+  routes_filter = { controller: ENV['CONTROLLER'] } if ENV['CONTROLLER']
+
+  OptionParser.new do |opts|
+    opts.banner = "Usage: rails routes [options]"
+    opts.on("-c", "--controller [CONTROLLER]") do |controller|
+      routes_filter = { controller: controller }
+    end
+
+    opts.on("-g", "--grep [PATTERN]") do |pattern|
+      routes_filter = pattern
+    end
+
+  end.parse!(ARGV.reject { |x| x == "routes" })
+
+  puts inspector.format(ActionDispatch::Routing::ConsoleFormatter.new, routes_filter)
+
+  exit 0 # ensure extra arguments aren't interpreted as Rake tasks
 end