ruby.c: disable DidYouMean as gem

* ruby.c (process_options): as DidYouMean requires Rubygems, disable
  the former when the latter is disabled too.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63977 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ruby.c

@@ -1690,9 +1690,9 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
     Init_ext();		/* load statically linked extensions before rubygems */
     if (opt->features & FEATURE_BIT(gems)) {
 	rb_define_module("Gem");
-    }
-    if (opt->features & FEATURE_BIT(did_you_mean)) {
-	rb_define_module("DidYouMean");
+	if (opt->features & FEATURE_BIT(did_you_mean)) {
+	    rb_define_module("DidYouMean");
+	}
     }
     ruby_init_prelude();
     if ((opt->features ^ DEFAULT_FEATURES) & COMPILATION_FEATURES) {

test/ruby/test_rubyoptions.rb

@@ -151,6 +151,7 @@ class TestRubyOptions < Test::Unit::TestCase
     assert_in_out_err(%w(--disable), "", [], /missing argument for --disable/)
     assert_in_out_err(%w(--disable-gems -e) + ['p defined? Gem'], "", ["nil"], [])
     assert_in_out_err(%w(--disable-did_you_mean -e) + ['p defined? DidYouMean'], "", ["nil"], [])
+    assert_in_out_err(%w(--disable-gems -e) + ['p defined? DidYouMean'], "", ["nil"], [])
   end
 
   def test_kanji