[Fix #2194] Allow any options with --auto-gen-config

CHANGELOG.md

@@ -71,6 +71,10 @@
 * [#2344](https://github.com/bbatsov/rubocop/pull/2344): When autocorrecting, `Style/ParallelAssignment` reorders assignment statements, if necessary, to avoid breaking code. ([@alexdowad][])
 * `Style/MultilineOperationAlignment` does not try to align the receiver and selector of a method call if both are on the LHS of an assignment. ([@alexdowad][])
 
+### Changes
+
+* [#2194](https://github.com/bbatsov/rubocop/issues/2194): Allow any options with `--auto-gen-config`. ([@agrimm][])
+
 ## 0.34.2 (21/09/2015)
 
 ### Bug Fixes

lib/rubocop/options.rb

@@ -71,7 +71,6 @@ def add_configuration_options(opts, args)
       option(opts, '-c', '--config FILE')
 
       option(opts, '--auto-gen-config') do
-        @validator.validate_auto_gen_config_option(args)
         @options[:formatters] = [[DEFAULT_FORMATTER],
                                  [Formatter::DisabledConfigFormatter,
                                   ConfigLoader::AUTO_GENERATED_FILE]]
@@ -193,14 +192,6 @@ def validate_compatibility
       fail ArgumentError, "Incompatible cli options: #{incompat.inspect}"
     end
 
-    def validate_auto_gen_config_option(args)
-      return if args.empty?
-      return if args.size <= 2 && args.first == '--exclude-limit'
-
-      warn '--auto-gen-config can only be combined with --exclude-limit.'
-      exit(1)
-    end
-
     def validate_exclude_limit_option(args)
       if @options[:exclude_limit] !~ /^\d+$/
         # Emulate OptionParser's behavior to make failures consistent regardless

spec/rubocop/cli_spec.rb

@@ -978,21 +978,6 @@ def abs(path)
                   ''].join("\n"))
       end
 
-      it 'exits with error if file arguments are given' do
-        create_file('example1.rb', ['# encoding: utf-8',
-                                    'x= 0 ',
-                                    '#' * 85,
-                                    'y ',
-                                    'puts x'])
-        expect { cli.run(['--auto-gen-config', 'example1.rb']) }
-          .to exit_with_code(1)
-        expect($stderr.string)
-          .to eq(['--auto-gen-config can only be combined with ' \
-                  '--exclude-limit.',
-                  ''].join("\n"))
-        expect($stdout.string).to eq('')
-      end
-
       it 'can generate a todo list' do
         create_file('example1.rb', ['# encoding: utf-8',
                                     '$x= 0 ',

spec/rubocop/options_spec.rb

@@ -232,6 +232,13 @@ def abs(path)
       end
     end
 
+    describe '--auto-gen-config' do
+      it 'accepts other options' do
+        expect { options.parse %w(--auto-gen-config --rails) }
+          .not_to raise_error
+      end
+    end
+
     describe '-s/--stdin' do
       before do
         $stdin = StringIO.new