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ruby-changes:15983

From: mame <ko1@a...>
Date: Thu, 20 May 2010 22:21:16 +0900 (JST)
Subject: [ruby-changes:15983] Ruby:r27928 (ruby_1_9_2): * vm_eval.c (rb_f_caller): update rdoc. a patch from Nobuhiro IMAI

mame	2010-05-20 22:21:00 +0900 (Thu, 20 May 2010)

  New Revision: 27928

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=27928

  Log:
    * vm_eval.c (rb_f_caller): update rdoc.  a patch from Nobuhiro IMAI
      <nov at yo.rim.or.jp> in [ruby-dev:41348].

  Modified files:
    branches/ruby_1_9_2/ChangeLog
    branches/ruby_1_9_2/vm_eval.c

Index: ruby_1_9_2/ChangeLog
===================================================================
--- ruby_1_9_2/ChangeLog	(revision 27927)
+++ ruby_1_9_2/ChangeLog	(revision 27928)
@@ -1,3 +1,8 @@
+Thu May 20 22:19:37 2010  Yusuke Endoh  <mame@t...>
+
+	* vm_eval.c (rb_f_caller): update rdoc.  a patch from Nobuhiro IMAI
+	  <nov at yo.rim.or.jp> in [ruby-dev:41348].
+
 Thu May 20 22:17:24 2010  Yusuke Endoh  <mame@t...>
 
 	* vm.c (vm_backtrace_each): now takes an init function to distinguish
Index: ruby_1_9_2/vm_eval.c
===================================================================
--- ruby_1_9_2/vm_eval.c	(revision 27927)
+++ ruby_1_9_2/vm_eval.c	(revision 27928)
@@ -1536,7 +1536,7 @@
 
 /*
  *  call-seq:
- *     caller(start=1)    -> array
+ *     caller(start=1)    -> Array or nil
  *
  *  Returns the current execution stack---an array containing strings in
  *  the form ``<em>file:line</em>'' or ``<em>file:line: in
@@ -1544,6 +1544,9 @@
  *  determines the number of initial stack entries to omit from the
  *  result.
  *
+ *  Returns +nil+ if _start_ is greater than or equal to the size of
+ *  current execution stack.
+ *
  *     def a(skip)
  *       caller(skip)
  *     end
@@ -1557,6 +1560,7 @@
  *     c(1)   #=> ["prog:5:in `b'", "prog:8:in `c'", "prog:11"]
  *     c(2)   #=> ["prog:8:in `c'", "prog:12"]
  *     c(3)   #=> ["prog:13"]
+ *     c(4)   #=> nil
  */
 
 static VALUE

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