* eval.c (rb_eval): pre-evaluate argument for unambiguous

  evaluation order.  [ruby-dev:26383]

* lib/delegate.rb (Delegator::method_missing): forward unknown
  method to the destination.  suggested by
  <christophe.poucet@gmail.com>.  [ruby-talk:146776]

* process.c (detach_process_watcher): terminate process watcher
  thread right after rb_waitpid() succeed.  [ruby-talk:146430]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@8676 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 9 insertions, 9 deletions

diff --git a/lib/delegate.rb b/lib/delegate.rb
index 9c89a8cc1..72b52f3d4 100644
--- a/lib/delegate.rb
+++ b/lib/delegate.rb
@@ -49,6 +49,14 @@ class Delegator
   end
   alias initialize_methods initialize
 
+  def method_missing(m, *args)
+    target = self.__getobj__
+    unless target.respond_to?(m)
+      super(m, *args)
+    end
+    target.__send__(m, *args)
+  end
+
   def __getobj__
     raise NotImplementedError, "need to define `__getobj__'"
   end
diff --git a/lib/set.rb b/lib/set.rb
index 586a5d9f4..9e3dac06e 100644
--- a/lib/set.rb
+++ b/lib/set.rb
@@ -101,7 +101,6 @@ class Set
     if enum.class == self.class
       @hash.replace(enum.instance_eval { @hash })
     else
-      enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
       clear
       enum.each { |o| add(o) }
     end
@@ -254,7 +253,6 @@ class Set
     if enum.is_a?(Set)
       @hash.update(enum.instance_eval { @hash })
     else
-      enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
       enum.each { |o| add(o) }
     end
 
@@ -264,7 +262,6 @@ class Set
   # Deletes every element that appears in the given enumerable object
   # and returns self.
   def subtract(enum)
-    enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
     enum.each { |o| delete(o) }
     self
   end
@@ -272,7 +269,6 @@ class Set
   # Returns a new set built by merging the set and the elements of the
   # given enumerable object.
   def |(enum)
-    enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
     dup.merge(enum)
   end
   alias + |		##
@@ -281,7 +277,6 @@ class Set
   # Returns a new set built by duplicating the set, removing every
   # element that appears in the given enumerable object.
   def -(enum)
-    enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
     dup.subtract(enum)
   end
   alias difference -	##
@@ -289,7 +284,6 @@ class Set
   # Returns a new array containing elements common to the set and the
   # given enumerable object.
   def &(enum)
-    enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
     n = self.class.new
     enum.each { |o| n.add(o) if include?(o) }
     n
@@ -300,7 +294,6 @@ class Set
   # and the given enumerable object.  (set ^ enum) is equivalent to
   # ((set | enum) - (set & enum)).
   def ^(enum)
-    enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
     n = dup
     enum.each { |o| if n.include?(o) then n.delete(o) else n.add(o) end }
     n
@@ -519,6 +512,7 @@ end
 
 module Enumerable
   # Makes a set from the enumerable object with given arguments.
+  # Needs to +require "set"+ to use this method.
   def to_set(klass = Set, *args, &block)
     klass.new(self, *args, &block)
   end
@@ -573,7 +567,6 @@ end
 # 	end
 # 
 # 	def replace(enum)
-# 	  enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
 # 	  clear
 # 	  enum.each { |o| add(o) }
 # 
@@ -581,7 +574,6 @@ end
 # 	end
 # 
 # 	def merge(enum)
-# 	  enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
 # 	  enum.each { |o| add(o) }
 # 
 # 	  self