* lib/cgi.rb (CGI::QueryExtension::[]): always return Value

  object.


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@3717 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 6 insertions, 4 deletions

diff --git a/lib/cgi.rb b/lib/cgi.rb
index 7dffdd9a3..dfeea5fc4 100644
--- a/lib/cgi.rb
+++ b/lib/cgi.rb
@@ -957,7 +957,9 @@ END
     end
 
     def [](key)
-      Value.new(@params[key][0])
+      value = @params[key][0]
+      value ||= ""
+      Value.new(value)
     end
 
     def keys(*args)
diff --git a/lib/complex.rb b/lib/complex.rb
index dda2ad200..90916d125 100644
--- a/lib/complex.rb
+++ b/lib/complex.rb
@@ -13,7 +13,6 @@
 #
 # Complex numbers can be created in the following manner:
 # - <tt>Complex(a, b)</tt>
-# - <tt>Complex.new(a, b)</tt>
 # - <tt>Complex.polar(radius, theta)</tt>
 #   
 # Additionally, note the following:
@@ -66,7 +65,8 @@ class Complex < Numeric
   def Complex.polar(r, theta)
     Complex(r*Math.cos(theta), r*Math.sin(theta))
   end
-  
+
+  private_class_method :new
   #
   # Creates a +Complex+ number <tt>a</tt>+<tt>b</tt><i>i</i>.
   #
diff --git a/lib/singleton.rb b/lib/singleton.rb
index 147b04187..939159496 100644
--- a/lib/singleton.rb
+++ b/lib/singleton.rb
@@ -142,7 +142,7 @@ module Singleton
                 @__instance__ = new
             ensure
                 if @__instance__
-                    def self.instance() @__instance__ end
+		    define_method(:instance) {@__instance__}
                 else
                     @__instance__ = nil #  failed instance creation
                 end