From 5b014a7427ef87fecb54c368cf3fe1efabb03f03 Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 21 Oct 2005 09:00:02 +0000
Subject: * bin/erb (ERB::Main::run): typo fixed.  [ruby-core:06337]

* env.h: move struct METHOD and struct BLOCK from eval.c to
  support NodeWrap and ParseTree.

* rubysig.h (CHECK_INTS): prevent signal handler to run during
  critical section.  [ruby-core:04039]

* eval.c (load_wait): need not to call rb_thread_schedule()
  explicitly.  [ruby-core:04039]

* eval.c (rb_thread_schedule): clear rb_thread_critical.
  [ruby-core:04039]

* eval.c (rb_obj_instance_exec): create instance_exec and
  module_exec which pass arguments to the block.

* eval.c (rb_f_funcall): rename fcall to funcall to follow
  tradition.

* st.c (st_free_table): do not call free() but xfree().
  [ruby-core:06205]

* eval.c (splat_value): call rb_Array() to convert svalue to
  values.  [ruby-dev:27397]

* lib/cgi.rb (CGI::Cookie::parse): Cookies from Nokia devices may
  not be parsed correctly.  A patch from August Z. Flatby
  (augustzf) in [ruby-Patches-2595].  [ruby-core:06183]

* object.c (rb_Array): Array() to raise error for objects without
  to_ary, nor to_a.

* object.c (nil_to_a): revert NilClass#to_a.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9436 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 object.c | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

(limited to 'object.c')

diff --git a/object.c b/object.c
index 694fcf3159..9f39ec3117 100644
--- a/object.c
+++ b/object.c
@@ -727,6 +727,22 @@ nil_to_s(VALUE obj)
     return rb_str_new2("");
 }
 
+/*
+ *  call-seq:
+ *     nil.to_a    => []
+ *  
+ *  Always returns an empty array.
+ *     
+ *     nil.to_a   #=> []
+ */
+
+static VALUE
+nil_to_a(obj)
+    VALUE obj;
+{
+    return rb_ary_new2(0);
+}
+
 /*
  *  call-seq:
  *    nil.inspect  => "nil"
@@ -2236,10 +2252,7 @@ rb_Array(VALUE val)
     VALUE tmp = rb_check_array_type(val);
 
     if (NIL_P(tmp)) {
-	tmp = rb_check_convert_type(val, T_ARRAY, "Array", "to_a");
-	if (NIL_P(tmp)) {
-	    return rb_ary_new3(1, val);
-	}
+	return rb_convert_type(val, T_ARRAY, "Array", "to_a");
     }
     return tmp;
 }
@@ -2250,8 +2263,6 @@ rb_Array(VALUE val)
  *  
  *  Returns <i>arg</i> as an <code>Array</code>. First tries to call
  *  <i>arg</i><code>.to_ary</code>, then <i>arg</i><code>.to_a</code>.
- *  If both fail, creates a single element array containing <i>arg</i>
- *  (unless <i>arg</i> is <code>nil</code>).
  *     
  *     Array(1..5)   #=> [1, 2, 3, 4, 5]
  */
@@ -2433,6 +2444,7 @@ Init_Object(void)
     rb_define_method(rb_cNilClass, "to_i", nil_to_i, 0);
     rb_define_method(rb_cNilClass, "to_f", nil_to_f, 0);
     rb_define_method(rb_cNilClass, "to_s", nil_to_s, 0);
+    rb_define_method(rb_cNilClass, "to_a", nil_to_a, 0);
     rb_define_method(rb_cNilClass, "inspect", nil_inspect, 0);
     rb_define_method(rb_cNilClass, "&", false_and, 1);
     rb_define_method(rb_cNilClass, "|", false_or, 1);
-- 
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