usa	2012-02-27 20:46:43 +0900 (Mon, 27 Feb 2012)

  New Revision: 34834

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=34834

  Log:
    * io.c (rb_io_set_pos): add rdoc about textmode.
    
    * test/ruby/test_io.rb (TestIO#test_setpos): use binmode.

  Modified files:
    trunk/ChangeLog
    trunk/io.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 34833)
+++ ChangeLog	(revision 34834)
@@ -1,3 +1,9 @@
+Mon Feb 27 20:43:05 2012  NAKAMURA Usaku  <usa@r...>
+
+	* io.c (rb_io_set_pos): add rdoc about textmode.
+
+	* test/ruby/test_io.rb (TestIO#test_setpos): use binmode.
+
 Mon Feb 27 17:00:15 2012  Akinori MUSHA  <knu@i...>
 
 	* string.c (rb_str_crypt): Update rdoc and state that this
Index: io.c
===================================================================
--- io.c	(revision 34833)
+++ io.c	(revision 34834)
@@ -1437,6 +1437,8 @@
  *     ios.pos = integer    -> integer
  *
  *  Seeks to the given position (in bytes) in <em>ios</em>.
+ *  It is not guranteed that seeking to the right position when <em>ios</em>
+ *  is textmode.
  *
  *     f = File.new("testfile")
  *     f.pos = 17

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