ido and ido-file-extensions-order

[Phillip Lord]

I am having problems with `ido-file-extensions-order'. On setting
this, I get a backtrace when trying to use ido. The backtrace and help
screen (showing the set value) of `ido-file-extension-order' is
below. 

I've removed the message and lossage information from this bug report,
because I have to use a different instance of emacs to send the
report. I've replicated this bug in an emacs launched as...

runemacs.exe --debug-init -q --no-site-file

and just customizing `ido-file-extensions-order' as shown. 

Thanks



Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
  ido-file-extension-aux("download/" "documents/" 2 t)
  ido-file-extension-lessp("documents/" "download/")
  sort(("unison.log") ido-file-extension-lessp)
  ido-make-file-list(nil)
  ido-read-internal(file "Find file: " ido-file-history nil nil nil)
  ido-file-internal(raise-frame)
  ido-find-file()
  call-interactively(ido-find-file)

ido-file-extensions-order is a variable defined in `ido.el'.
Its value is (".muse")


Documentation:
*List of file extensions specifying preferred order of file selections.
Each element is either a string with `.' as the first char, an empty
string matching files without extension, or t which is the default order
for files with an unlisted file extension.

You can customize this variable.

[back]





Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:



If emacs crashed, and you have the emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
d:/Emacs/emacs/etc/DEBUG for instructions.


In GNU Emacs 22.0.50.1 (i386-mingw-nt5.1.2600)
 of 2006-06-27 on W2ONE
X server distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --cflags -Id:/g/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