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Subject:	Re: case sensitivity bug?
To:	cygwin AT cygwin DOT com
References:	<43ca1dd7-3042-88b1-dbb7-59b02f13d331 AT cornell DOT edu> <6aa79b30-fa27-c5b6-e597-d40b82eee313 AT SystematicSw DOT ab DOT ca>
From:	Ken Brown <kbrown AT cornell DOT edu>
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Date:	Wed, 21 Sep 2016 12:59:31 -0400
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On 9/21/2016 12:32 PM, Brian Inglis wrote:
> On 2016-09-20 18:33, Ken Brown wrote:
>> I've set up my Cygwin installation to be case sensitive, following the
>> instructions at
>> https://cygwin.com/cygwin-ug-net/using-specialnames.html#pathnames-casesensitive
>>
>> But it doesn't seem to be working as I expect.  For example:
>> $ mkdir a
>> $ mkdir A
>> $ ls -al [aA]
>> a:
>> total 100
>> drwxr-xr-x+ 1 kbrown       None 0 2016-09-20 20:18 ./
>> drwxrwxrwt+ 1 kbrown-admin None 0 2016-09-20 20:19 ../
>> A:
>> total 100
>> drwxr-xr-x+ 1 kbrown       None 0 2016-09-20 20:19 ./
>> drwxrwxrwt+ 1 kbrown-admin None 0 2016-09-20 20:19 ../
>> $ mv a A
>> mv: cannot move 'a' to a subdirectory of itself, 'A/a'
>> Why does mv think that A and a are the same directory?
>> Here's another example, where mv should simply do a rename, but it
>> doesn't:
>> $ rmdir A
>> $ mv a A
>> $ ls -al a
>> total 100
>> drwxr-xr-x+ 1 kbrown       None 0 2016-09-20 20:18 ./
>> drwxrwxrwt+ 1 kbrown-admin None 0 2016-09-20 20:30 ../
>> $ ls -al A
>> ls: cannot access 'A': No such file or directory
>> cygcheck output is attached.
>
> Windows Win32 and WoW are case insensitive but case preserving where the
> underlying
> filesystem supports case sensitivity; POSIX subsystem is case sensitive:
>
> https://support.microsoft.com/en-us/kb/100625 (N.B. NT 3.1!)
>
> Nitty gritties:
>
> http://www.nicklowe.org/2012/02/understanding-case-sensitivity-in-windows-obcaseinsensitive-file_case_sensitive_search/

Thanks for the pointers, but I'm not sure how that's related to my bug 
report.  Did you read the section of the Cygwin User Guide that I cited?

Ken


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