there is no reason for ARGV[0] to be nil

railties/lib/rails/generators/rails/app/app_generator.rb

@@ -362,15 +362,17 @@ def railsrc(argv)
           end
         end
 
+        def read_rc_file(railsrc)
+          return [] unless File.exists?(railsrc)
+          extra_args_string = File.read(railsrc)
+          extra_args = extra_args_string.split(/\n+/).map {|l| l.split}.flatten
+          puts "Using #{extra_args.join(" ")} from #{railsrc}"
+          extra_args
+        end
+
         def insert_railsrc_into_argv!(argv, railsrc)
-          if File.exist?(railsrc)
-            extra_args_string = File.read(railsrc)
-            extra_args = extra_args_string.split(/\n+/).map {|l| l.split}.flatten
-            puts "Using #{extra_args.join(" ")} from #{railsrc}"
-            [argv.first] + extra_args + argv.drop(1)
-          else
-            argv
-          end
+          extra_args = read_rc_file railsrc
+          argv.take(1) + extra_args + argv.drop(1)
         end
     end
   end

railties/test/generators/argv_scrubber_test.rb

@@ -67,7 +67,7 @@ def test_new_homedir_rc
           define_method(:puts) { |msg| message = msg }
         }.new ['new']
         args = scrubber.prepare!
-        assert_equal [nil, '--hello-world'], args
+        assert_equal ['--hello-world'], args
         assert_match 'hello-world', message
         assert_match file.path, message
       ensure
@@ -85,7 +85,7 @@ def test_new_rc_option
           define_method(:puts) { |msg| message = msg }
         }.new ['new', "--rc=#{file.path}"]
         args = scrubber.prepare!
-        assert_equal [nil, '--hello-world'], args
+        assert_equal ['--hello-world'], args
         assert_match 'hello-world', message
         assert_match file.path, message
       ensure