Removed NIL/TRUE/FALSE

Deprerecated constants which had been warned since 2.4.

object.c

@@ -4692,11 +4692,6 @@ InitVM_Object(void)
     rb_define_method(rb_cNilClass, "nil?", rb_true, 0);
     rb_undef_alloc_func(rb_cNilClass);
     rb_undef_method(CLASS_OF(rb_cNilClass), "new");
-    /*
-     * An obsolete alias of +nil+
-     */
-    rb_define_global_const("NIL", Qnil);
-    rb_deprecate_constant(rb_cObject, "NIL");
 
     rb_define_method(rb_cModule, "freeze", rb_mod_freeze, 0);
     rb_define_method(rb_cModule, "===", rb_mod_eqq, 1);
@@ -4781,11 +4776,6 @@ InitVM_Object(void)
     rb_define_method(rb_cTrueClass, "===", rb_equal, 1);
     rb_undef_alloc_func(rb_cTrueClass);
     rb_undef_method(CLASS_OF(rb_cTrueClass), "new");
-    /*
-     * An obsolete alias of +true+
-     */
-    rb_define_global_const("TRUE", Qtrue);
-    rb_deprecate_constant(rb_cObject, "TRUE");
 
     rb_cFalseClass = rb_define_class("FalseClass", rb_cObject);
     rb_cFalseClass_to_s = rb_fstring_enc_lit("false", rb_usascii_encoding());
@@ -4798,11 +4788,6 @@ InitVM_Object(void)
     rb_define_method(rb_cFalseClass, "===", rb_equal, 1);
     rb_undef_alloc_func(rb_cFalseClass);
     rb_undef_method(CLASS_OF(rb_cFalseClass), "new");
-    /*
-     * An obsolete alias of +false+
-     */
-    rb_define_global_const("FALSE", Qfalse);
-    rb_deprecate_constant(rb_cObject, "FALSE");
 }
 
 #include "kernel.rbinc"

spec/ruby/language/predefined_spec.rb

@@ -1091,8 +1091,6 @@ The following constants are defined by the Ruby interpreter.
 DATA                 IO          If the main program file contains the directive __END__, then
                                  the constant DATA will be initialized so that reading from it will
                                  return lines following __END__ from the source file.
-FALSE                FalseClass  Synonym for false.
-NIL                  NilClass    Synonym for nil.
 RUBY_PLATFORM        String      The identifier of the platform running this program. This string
                                  is in the same form as the platform identifier used by the GNU
                                  configure utility (which is not a coincidence).
@@ -1110,31 +1108,9 @@ SCRIPT_LINES__       Hash        If a constant SCRIPT_LINES__ is defined and ref
                                  the value.
 TOPLEVEL_BINDING     Binding     A Binding object representing the binding at Ruby’s top level—
                                  the level where programs are initially executed.
-TRUE                 TrueClass   Synonym for true.
 =end
 
 describe "The predefined global constants" do
-  it "includes TRUE" do
-    Object.const_defined?(:TRUE).should == true
-    -> {
-      TRUE.should equal(true)
-    }.should complain(/constant ::TRUE is deprecated/)
-  end
-
-  it "includes FALSE" do
-    Object.const_defined?(:FALSE).should == true
-    -> {
-      FALSE.should equal(false)
-    }.should complain(/constant ::FALSE is deprecated/)
-  end
-
-  it "includes NIL" do
-    Object.const_defined?(:NIL).should == true
-    -> {
-      NIL.should equal(nil)
-    }.should complain(/constant ::NIL is deprecated/)
-  end
-
   it "includes STDIN" do
     Object.const_defined?(:STDIN).should == true
   end