4 files changed, 36 insertions, 26 deletions
diff --git a/railties/lib/rails/command/actions.rb b/railties/lib/rails/command/actions.rb
index cbb743346b..50651ad61a 100644
--- a/railties/lib/rails/command/actions.rb
+++ b/railties/lib/rails/command/actions.rb
@@ -11,10 +11,20 @@ module Rails
       end
 
       def require_application_and_environment!
+        require_application!
+        require_environment!
+      end
+
+      def require_application!
         require ENGINE_PATH if defined?(ENGINE_PATH)
 
         if defined?(APP_PATH)
           require APP_PATH
+        end
+      end
+
+      def require_environment!
+        if defined?(APP_PATH)
           Rails.application.require_environment!
         end
       end
diff --git a/railties/lib/rails/command/base.rb b/railties/lib/rails/command/base.rb
index 766872de8a..a22b198c66 100644
--- a/railties/lib/rails/command/base.rb
+++ b/railties/lib/rails/command/base.rb
@@ -115,7 +115,7 @@ module Rails
         # For a Rails::Command::TestCommand placed in <tt>rails/command/test_command.rb</tt>
         # would return <tt>rails/test</tt>.
         def default_command_root
-          path = File.expand_path(File.join("../commands", command_root_namespace), __dir__)
+          path = File.expand_path(relative_command_path, __dir__)
           path if File.exist?(path)
         end
 
@@ -135,12 +135,20 @@ module Rails
           end
 
           def command_root_namespace
-            (namespace.split(":") - %w( rails )).first
+            (namespace.split(":") - %w(rails)).join(":")
+          end
+
+          def relative_command_path
+            File.join("../commands", *command_root_namespace.split(":"))
           end
 
           def namespaced_commands
             commands.keys.map do |key|
-              key == command_root_namespace ? key : "#{command_root_namespace}:#{key}"
+              if command_root_namespace.match?(/(\A|\:)#{key}\z/)
+                command_root_namespace
+              else
+                "#{command_root_namespace}:#{key}"
+              end
             end
           end
       end
diff --git a/railties/lib/rails/command/behavior.rb b/railties/lib/rails/command/behavior.rb
index 718e2d9ab2..7fb2a99e67 100644
--- a/railties/lib/rails/command/behavior.rb
+++ b/railties/lib/rails/command/behavior.rb
@@ -56,12 +56,10 @@ module Rails
           def lookup!
             $LOAD_PATH.each do |base|
               Dir[File.join(base, *file_lookup_paths)].each do |path|
-                begin
-                  path = path.sub("#{base}/", "")
-                  require path
-                rescue Exception
-                  # No problem
-                end
+                path = path.sub("#{base}/", "")
+                require path
+              rescue Exception
+                # No problem
               end
             end
           end
@@ -73,8 +71,9 @@ module Rails
             paths = []
             namespaces.each do |namespace|
               pieces = namespace.split(":")
-              paths << pieces.dup.push(pieces.last).join("/")
-              paths << pieces.join("/")
+              path = pieces.join("/")
+              paths << "#{path}/#{pieces.last}"
+              paths << path
             end
             paths.uniq!
             paths
diff --git a/railties/lib/rails/command/environment_argument.rb b/railties/lib/rails/command/environment_argument.rb
index 5dc98b113d..9945fd1430 100644
--- a/railties/lib/rails/command/environment_argument.rb
+++ b/railties/lib/rails/command/environment_argument.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require "active_support"
+require "active_support/core_ext/class/attribute"
 
 module Rails
   module Command
@@ -8,26 +9,18 @@ module Rails
       extend ActiveSupport::Concern
 
       included do
-        argument :environment, optional: true, banner: "environment"
-
-        class_option :environment, aliases: "-e", type: :string,
-          desc: "Specifies the environment to run this console under (test/development/production)."
+        no_commands do
+          class_attribute :environment_desc, default: "Specifies the environment to run this #{self.command_name} under (test/development/production)."
+        end
+        class_option :environment, aliases: "-e", type: :string, desc: environment_desc
       end
 
       private
-        def extract_environment_option_from_argument
-          if environment
-            self.options = options.merge(environment: acceptable_environment(environment))
-
-            ActiveSupport::Deprecation.warn "Passing the environment's name as a " \
-                                            "regular argument is deprecated and "  \
-                                            "will be removed in the next Rails "   \
-                                            "version. Please, use the -e option "  \
-                                            "instead."
-          elsif options[:environment]
+        def extract_environment_option_from_argument(default_environment: Rails::Command.environment)
+          if options[:environment]
             self.options = options.merge(environment: acceptable_environment(options[:environment]))
           else
-            self.options = options.merge(environment: Rails::Command.environment)
+            self.options = options.merge(environment: default_environment)
           end
         end