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Date:	Mon, 30 Nov 2009 07:31:12 -0500
From:	Ken Brown <kbrown AT cornell DOT edu>
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Subject:	Re: [ANNOUNCEMENT] [1.7] Updated: cygwin-1.7.0-67
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On 11/30/2009 4:43 AM, Corinna Vinschen wrote:
> On Nov 29 18:22, Robert Pendell wrote:
>> On Sun, Nov 29, 2009 at 5:41 PM, Angelo Graziosi wrote:
>>> Ken Brown wrote:
>>>> I just confirmed this on my XP SP3 system. I initially got similar
>>>> behavior to what Angelo and Robert reported, but it doesn't happen if I
>>>> export TMPDIR=/tmp before running patch.
>>> Indeed!
>>>
>>> On my system TMPDIR isn't defined by default; instead TMP and TEMP point to
>>> $USERPROFILE/Temp. Setting TMP or TMPDIR to /tmp, works. Instead pointing
>>> TEMP to /tmp does not, i.e. 'patch' creates foo.txt with '+'.
> 
> That explains it all.  The original problem was that inheritable
> permissions from the parent dirs were not inherited when creating files
> in Cygwin.  That was a long-standing problem in Cygwin since it disabled
> POSIX ACL default permissions to be inherited correctly.  Now that works
> correct.  So Angelo's observation is actually good news, rather than yet
> another bug.

Nevertheless, it's somewhat startling to see permissions change as a 
side effect of patching a file.  One simple way to prevent this is to 
unset TMP and TEMP in /etc/profile.  Is there any downside to doing 
this?  A search of the mailing list archives shows that the default 
/etc/profile used to do this.  I didn't dig long enough to find out why 
it changed.

Ken

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