ido-mode and customized read-buffer-function

[Roland Winkler]

Symptoms:

I have customized the variable read-buffer-function and I would like
to combine this with ido-mode. 

When I do not want ido everywhere but only ido-mode, the latter still
calls ido-everywhere. But then ido-everywhere doesn't check whether
I have already customized read-buffer-function. It overwrites the
value of read-buffer-function with nil. Isn't that too aggressive?


In GNU Emacs 22.0.50.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2005-04-19 on tfkp07
Distributor `The XFree86 Project, Inc', version 11.0.40300001
configured using `configure '--prefix=/nfs/tfkp07/winkler/emacs/NEW' 
'--with-gcc' '--with-pop' '--with-x' '--with-x-toolkit=athena' 
'--x-libraries=/usr/X11R6/lib' '--x-includes=/usr/X11R6/include''

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_US
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: nil

Major mode: Emacs-Lisp

Minor modes in effect:
  auto-compression-mode: t
  show-paren-mode: t
  display-time-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  line-number-mode: 1
  transient-mark-mode: t
  abbrev-mode: t