Re: case sensitivity bug?

2016-10-19 Thread Ken Brown

On 10/19/2016 7:27 AM, Corinna Vinschen wrote:

On Sep 20 20:33, 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.


Looks like a *very* old misbehaviour.  I applied a patch to Cygwin
to fix this.  I'll create a snapshot later today, please test.


That fixes it.  Thanks.

Ken


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Re: case sensitivity bug?

2016-10-19 Thread Corinna Vinschen
On Sep 20 20:33, 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.

Looks like a *very* old misbehaviour.  I applied a patch to Cygwin
to fix this.  I'll create a snapshot later today, please test.


Thanks,
Corinna

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


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Re: case sensitivity bug?

2016-09-22 Thread Brian Inglis

On 2016-09-21 10:59, Ken Brown wrote:

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?


If Cygwin uses underlying NT... OS calls for all operations, it should be 
case-sensitive,
but any underlying Win... subsystem calls will be case-insensitive, and YMMV, 
just as
if you used a native Windows command.

Maybe stat the file and strace that or the failing ls command above to see 
what's happening.

--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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Re: case sensitivity bug?

2016-09-21 Thread Ken Brown

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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Re: case sensitivity bug?

2016-09-21 Thread Brian Inglis

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/

--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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Re: case sensitivity bug?

2016-09-21 Thread Andrey Repin
Greetings, Ken Brown!

> 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

That instruction is outdated.
Modern OS have per-volume case sensitivity settings, and this is a default
configuration IIRC.
Get yourself a VM and configure one tome for case sensitivity, then install
Cygwin there.


-- 
With best regards,
Andrey Repin
Wednesday, September 21, 2016 11:36:27

Sorry for my terrible english...


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