bug#3274: ido-completing-read doesn't work unless ido-mode is executed

[Daniel Colascione <dan.colascione@gmail.com>]

ido-completing-read acts very strangely when ido-mode hasn't been run.
It creates a minibuffer with default bindings for RET which doesn't
report to C-g. This stub buffer is very difficult to exit.

Ideally, ido-completing-read would read in ido style regardless of
whether ido-mode is run. At the very least, it should act like
completing-read.

To reproduce, run emacs -Q, then evaluate

(ido-completing-read "test" '("1" "2" "3"))


In GNU Emacs 22.3.1 (i386-redhat-linux-gnu, GTK+ Version 2.14.7)
 of 2009-02-09 on x86-5.fedora.phx.redhat.com
Windowing system distributor `The X.Org Foundation', version 11.0.10503000
configured using `configure  '--build=i386-redhat-linux-gnu' '--host=i386-redhat-linux-gnu' '--target=i386-redhat-linux-gnu' '--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec' '--localstatedir=/var' '--sharedstatedir=/usr/com' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--with-x-toolkit=gtk' 'build_alias=i386-redhat-linux-gnu' 'host_alias=i386-redhat-linux-gnu' 'target_alias=i386-redhat-linux-gnu' 'CFLAGS=-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=generic -fasynchronous-unwind-tables''

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.UTF-8
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: PHP

Minor modes in effect:
  shell-dirtrack-mode: t
  which-function-mode: t
  cua-mode: t
  global-hi-lock-mode: t
  hi-lock-mode: t
  show-paren-mode: t
  savehist-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
  blink-cursor-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
c o n t a c t _ e m a i l , SPC <left> M-b M-b M-d 
<delete> <down-mouse-5> <mouse-5> <double-down-mouse-5> 
<double-mouse-5> <down-mouse-5> <mouse-5> <double-down-mouse-5> 
<double-mouse-5> <down-mouse-5> <mouse-5> <down-mouse-5> 
<mouse-5> <down-mouse-5> <mouse-5> <down-mouse-5> <mouse-5> 
<double-down-mouse-5> <double-mouse-5> C-x C-s C-x 
v v S y u c <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
S u c k SPC e m a i l s SPC i n t o SPC p r o d u c 
t i o n SPC s y s t e m SPC ( w h y SPC w a s n ' t 
SPC t h i s SPC d o n e SPC b e f o r e ? ) C-c C-c 
C-x C-f p r <tab> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> p r i <tab> <tab> 
<backspace> <backspace> <backspace> <tab> <tab> <tab> 
w o <tab> <backspace> <backspace> o r d <tab> <tab> 
<tab> . <tab> <backspace> <backspace> <backspace> <backspace> 
s / <tab> <tab> r <backspace> p r <tab> <tab> <tab> 
o r <tab> . <tab> <return> C-s e m a i l C-s C-s <left> 
C-x k M-x g r e C-g C-x C-f <up> <up> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> / o r d <tab> <return> 
C-x k C-x C-f <up> s <return> M-x g r e p <return> 
p <backspace> e m a i l SPC * . p h p <return> <down-mouse-5> 
<mouse-5> <help-echo> <down-mouse-4> <mouse-4> <help-echo> 
<down-mouse-2> <help-echo> <mouse-2> <help-echo> <help-echo> 
C-x 1 C-s e m a i l C-s C-s C-s C-s C-s C-s C-s C-s 
C-s C-s C-s C-s C-s C-s C-s C-s <left> M-x r e p o 
r t - e m <tab> <return>

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