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From:	Oleksandr Gavenko <gavenko AT bifit DOT com DOT ua>
Subject:	Re: where was mention of what creates NUL files?
Date:	Mon, 20 Sep 2010 12:40:06 +0300
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On 17.09.2010 20:12, Daniel Barclay wrote:
> Does anyone recall a mention of what in CygWin (or possibly Emacs) creates
> files with a simple name of "NUL"?
>
I also use native Emacs and after some operation I got file with name NUL.

I have a lot NUL files in many dirs, which can be removed only from Cygwin:

   $ rm NUL

I don't fully  debug but think this come from 'null-device' variable
(which has 'NUL' value by default).

To friend native GNU Emacs with Cygwin (and stop creating NUL) I use:

(when (eq system-type 'windows-nt)
   (setq shell-file-name "bash")
   ;; Workaround for Cygwin shell, when set 'CYGWIN=noglob'. By default 
'shell-quote-argument'
   ;; quoted by double '\' chars this cause failure.
   (defun shell-quote-argument (argument)
     (concat "'" argument "'")
     )
   ;; Workaround for Cygwin when 'shell-file-name' is 'bash'.
   (setq null-device "/dev/null")
   )

--
Happy hacking!


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