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Date:	Wed, 30 Jan 2019 14:18:22 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: [ANNOUNCEMENT] TEST: Cygwin 3.0.0-0.1
Message-ID:	<20190130131822.GE3912@calimero.vinschen.de>
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On Jan 30 12:43, Christian Franke wrote:
> Corinna Vinschen wrote:
> > I uploaded a new Cygwin test release 3.0.0-0.1
> >=20
> > ...
> > What's new:
> > -----------
> >=20
> > ...
> >=20
> > - Support for case sensitive directories.  mkdir(2) automatically
> >    creates directories within the Cygwin installation dir as case
> >    sensitive now.
> >=20
> >    This feature requires Windows 10 1803 or later and WSL installed!
>=20
> Before enabling WSL and relying on this new feature, users should check
> their backup tool. Some tools fail if a directory contains names which
> differ only in letter case. I don't know whether this may also happen if a
> case sensitive directory simply exists.
>=20
> At least Windows' own imaging tool dism.exe is affected. It is used for
> example by c't-WIMage (https://heise.de/-3863074, German). This cmd script
> creates compact incremental backups of the system partition in install.wim
> files. Depending on the version of dism.exe, the failure occurs during im=
age
> creation or (even worse) during restore.
>=20
> I have also seen a report that some Paragon imaging tool is affected.

Good point.  To expand a bit on the above text:

To reduce side-effects, case-sensitive subdirs are *only* created with
the Cygwin installation directory.  Outside, on the rest of the system,
Cygwin won't do that and just rely on the standard case-sensitivity
settings per

https://cygwin.com/cygwin-ug-net/using-specialnames.html#pathnames-casesens=
itive

Which reminds me... I guess I have to tweak the documentation.


Corinna

--=20
Corinna Vinschen
Cygwin Maintainer

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