Insufficient documentation on *how* to change SPC behaviour in minibuffer

[Sivaram Neelakantan]

Hello,

In Emacs 22.1, the behaviour of SPC has changed to handle filenames
with spaces as is evident from the NEWS file.  The information about
keymaps is not sufficient to determine what needs to be done in order
to get the old behaviour of file name completion(if it's provided for
at all).

What customization should a user do to get the old behaviour?
,----[ NEWS ]
| ** When Emacs prompts for file names, SPC no longer completes the file name.
| This is so filenames with embedded spaces could be input without the
| need to quote the space with a C-q.  The underlying changes in the
| keymaps that are active in the minibuffer are described below under
| "New keymaps for typing file names".
`----

,----[ NEWS ]
| *** New keymaps for typing file names
| 
| Two new keymaps, `minibuffer-local-filename-completion-map'  and
| `minibuffer-local-must-match-filename-map', apply whenever
| Emacs reads a file name in the minibuffer.  These key maps override
| the usual binding of SPC to `minibuffer-complete-word' (so that file
| names with embedded spaces could be typed without the need to quote
| the spaces).
`----

In GNU Emacs 22.1.1 (i386-mingw-nt5.1.2600)
 of 2007-06-02 on RELEASE
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --cflags -Ic:/gnuwin32/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: ENG
  locale-coding-system: cp1252
  default-enable-multibyte-characters: t

Major mode: Article

Minor modes in effect:
  show-paren-mode: t
  icomplete-mode: t
  erc-autojoin-mode: t
  erc-button-mode: t
  erc-ring-mode: t
  erc-pcomplete-mode: t
  erc-track-mode: t
  erc-fill-mode: t
  erc-netsplit-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  display-time-mode: t
  delete-selection-mode: t
  encoded-kbd-mode: t
  tooltip-mode: t
  tool-bar-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

Recent input:

Recent messages:
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 sivaram
 --