merges r21739 from trunk into ruby_1_9_1.

* lib/cgi/core.rb (CGI.parse): generate only key on params hash
  if request have only key uri parameters.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21825 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,11 @@
+Thu Jan 22 17:12:37 2009  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
+
+	* lib/cgi/core.rb (CGI.parse): generate only key on params hash
+	  if request have only key uri parameters.
+		(ex. index.cgi?aaa&bbb=1 # params=>{:aaa=>[],:bbb=>["1"]})
+
+	* test/cgi/test_cgi_core.rb: fix test for key only params.
+
 Thu Jan 22 16:29:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* lib/rubygems/installer.rb (Gem::Installer#initialize): fixed

lib/cgi/core.rb

@@ -339,6 +339,8 @@ class CGI
       key, value = pairs.split('=',2).collect{|v| CGI::unescape(v) }
       if key && value
         params.has_key?(key) ? params[key].push(value) : params[key] = [value]
+      elsif key
+        params[key]=[]
       end
     end
     params.default=[].freeze

test/cgi/test_cgi_core.rb

@@ -31,7 +31,7 @@ class CGICoreTest < Test::Unit::TestCase
     }
     ENV.update(@environ)
     cgi = CGI.new
-    assert_equal(["a","b","d"],cgi.keys.sort) if RUBY_VERSION>="1.9"
+    assert_equal(["a","b","c","d"],cgi.keys.sort) if RUBY_VERSION>="1.9"
     assert_equal("",cgi["d"])
   end