bug#3513: 23.0.94; Summary by sender fails in RMAIL

An rmail file in the new (mbox) format.  Attempt to summarise by
sender, and I get an error message
Search failed: "
*** EOOH ***
"


That suggests that it is still using BABYL format
==John ff


In GNU Emacs 23.0.94.4 (x86_64-unknown-linux-gnu, GTK+ Version 2.14.4)
 of 2009-06-09 on cage
Windowing system distributor `The X.Org Foundation', version 11.0.10502000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_GB.UTF-8
  value of $XMODIFIERS: @im=local
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: RMAIL

Minor modes in effect:
  show-paren-mode: t
  display-time-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<up> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <up> <return> C-x k <return> 
<up> <return> C-x k <return> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <return> C-x k <return> 
d <down> <down> <down> <down> <down> <down> <down> 
d <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> d 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> d <down> <down> <down> <down> 
<down> <down> d <down> <down> d <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <up> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
d <down> <down> <down> <down> <down> <down> <down> 
d <down> <down> <down> <down> <down> <down> <help-echo> 
x y e s <return> C-x C-f C-y C-u C-u C-g C-u M-x r 
m a i l <return> <backspace> <backspace> <backspace> 
<backspace> <backspace> R M A I L <return> y p p p 
p p p <menu-bar> <summary> <senders> b o u l a n g 
e r <return> M-x r e p o <tab> r <tab> <return>

Recent messages:
Quit
File RMAIL is large (85MB), really open? (y or n) 
Counting messages...done
uncompressing mailcrypt.el.gz...done
Loading mail-extr...done
Computing summary lines...
rmail-message-senders-p: Search failed: "
*** EOOH ***
"
Making completion list...