23.0.60; (minor) minibuffer file-name completion issue for files containing $

[Tim Van Holder <tim.vanholder@gmail.com>]

Files present on the system:
 /foo/$blah.xyzzy
 /foo/$blah.quux

When pressing TAB twice to get completions for "/foo/$b", I noticed that
the fact that the $ gets escaped in the minibuffer seems to cause the
wrong letter to be highlighted in the *Completions* buffer (i.e. the 'y'
and 'u' are highlighted, respectively, instead of the 'x' and 'q',
respectively).

In GNU Emacs 23.0.60.1 (i686-pc-linux-gnu, GTK+ Version 2.8.20)
 of 2008-05-19 on leeloo
Windowing system distributor `RealVNC Ltd', version 11.0.3370
configured using `configure  '--with-x''

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
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Dired by name

Minor modes in effect:
  shell-dirtrack-mode: t
  show-paren-mode: t
  pc-selection-mode: t
  display-time-mode: t
  delete-selection-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
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  size-indication-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t