duerst	2012-03-23 15:12:02 +0900 (Fri, 23 Mar 2012)

  New Revision: 35121

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=35121

  Log:
    transcode.c (documentation for str_encode): Explain
      that transcoding to the same encoding is a no-op
      (i.e. no exceptions, no replacements,...).
      [ruby-core:43557][Bug #6190]

  Modified files:
    trunk/ChangeLog
    trunk/transcode.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 35120)
+++ ChangeLog	(revision 35121)
@@ -1,3 +1,10 @@
+Fri Mar 23 15:12:12 2012  Martin Duerst  <duerst@i...>
+
+	* transcode.c (documentation for str_encode): Explain
+	  that transcoding to the same encoding is a no-op
+	  (i.e. no exceptions, no replacements,...).
+	  [ruby-core:43557][Bug #6190]
+
 Fri Mar 23 13:19:20 2012  Nobuyoshi Nakada  <nobu@r...>
 
 	* bignum.c (rb_str_to_inum): must be ASCII compatible encoding as
Index: transcode.c
===================================================================
--- transcode.c	(revision 35120)
+++ transcode.c	(revision 35121)
@@ -2815,6 +2815,10 @@
  *  in the source encoding. The last form by default does not raise
  *  exceptions but uses replacement strings.
  *
+ *  Please note that conversion from an encoding +enc+ to the
+ *  same encoding +enc+ is a no-op, i.e. the receiver is returned without
+ *  any changes, and no exceptions are raised, even if there are invalid bytes.
+ *
  *  The +options+ Hash gives details for conversion and can have the following
  *  keys:
  *

--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/