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Date: Fri, 12 Mar 2010 14:19:30 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: redirect-append (>>) creates garbage-y file
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On Mar 12 08:05, Bill Lebow wrote:
> Corinna Vinschen wrote:
> 
> > On Mar 11 13:12, William Lebow wrote:
> > > echo foo | tee -a test3.txt : terminal output is okay but test3.text
> > > starts with 3 characters of garbage before the string foo
> > >
> > > echo foo | tee test4.txt : terminal output is okay and test4.txt
> is okay too
> > >
> > > So "tee -a" has the same issue as ">>" when creating a new file.
> > >
> > > BTW, I believe that the garbage characters that precede the text
> is an encrypted
> > > version of the text in the file. This Credant software is
> protecting my txt files
> > > by encrypting them.
> 
> > And it's doing something blatantly wrong. Quite obviously, Cygwin
> > only writes the data once. If it's in the file twice, once encrypted
> > and once unencrypted, then this Credant software does not understand
> > native NT writing with append mode(*). You should report this as a bug.
> >
> > Corinna
> 
> Corinna, I can't argue with anything you say, and I have reported it
> to the other
> vendor. That said, this wasn't a problem with earlier versions of
> cygwin so I thought
> maybe there is something that can be done on the cygwin side.

Sure, but in that case, no, there's nothing we can do about it, except
to revert major functionality in Cygwin to the old implementation.
However, since we're using an officially documented API, I don't see a
reason to do that.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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