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From: Norton Allen <allen@huarp.harvard.edu>
Subject: Re: Possible issue with newest version of git (v 2.8) under Cygwin
To: cygwin@cygwin.com
References: <CADMefsagnTv23Jfi6St9VRpcabQJ9vekP2siT_Pfh=xO943QqQ@mail.gmail.com> <20160514120353.GH2345@dinwoodie.org>
Message-ID: <57371B4A.1090708@huarp.harvard.edu>
Date: Sat, 14 May 2016 08:34:18 -0400
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On 5/14/2016 8:03 AM, Adam Dinwoodie wrote:
>> If I leave off the noacl and do a clone followed by a push and pull we
>> >end up with the following error in the Windows security tab:
>> >   The permissions on file.cpp are incorrectly ordered, which may cause
>> >some entries to be ineffective.
> Yes, I've seen that before; it's a problem with the underlying
> cygwind1.dll rather than a problem with Git.  I believe the consensus
> from people on this list who know more about Windows permissions than me
> is that the warning is actually benign and can be ignored.

As I read the Cygwin documentation, the problem is that windows 
permissions and POSIX permissions don't line up very well. In order to 
faithfully reproduce POSIX permissions, Cygwin uses legal but 
non-standard ordering of ACEs. Windows' security tab thinks this is a 
problem, but it really isn't. To quote from the documentation here: 
https://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-files:

    Unfortunately the security tab in the file properties dialog of the
    Windows Explorer insists to rearrange the order of the ACEs to
    canonical order before you can read them. Thank God, the sort order
    remains unchanged if one presses the Cancel button. But don't even
    *think* of pressing OK...

So it would seem the problem as such lies with Windows' security tab.

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