From: Mike Hommey <mh@glandium.org>
Date: Wed, 23 Jan 2008 09:40:52 GMT
Subject: Re: git on MacOSX and files with decomposed utf-8 file names
Message-ID: <20080123094052.GB6969@glandium.org>
In-Reply-To: <4697E0BA-7243-4C35-A384-0BD261EC21AF@sb.org>

On Wed, Jan 23, 2008 at 03:15:02AM -0500, Kevin Ballard <kevin@sb.org> wrote:
> "In Mac OS X,  SMB, MSDOS, UDF, ISO 9660 (Joliet), NTFS and ZFS file  
> systems all store in one form -- NFC.  We store in NFC since that what  
> is expected for these files systems."

That's the point. It's stored in NFC, but what applications see is NFD.

> >- Likewise for Samba shares.
> 
> See above.
> 
> >- When I had my problems with iso9660 rockridge volumes using NFC (you
> > can create that just fine with mkisofs), the volume is mounted  
> >without
> > normalisation, i.e. if you get to a shell and want to access files,
> > you must use NFC, but at least the Finder does transliteration at  
> >some
> > stage, because going into the mount point and opening some files fail
> > because it's trying to open the file with the name transliterated to
> > NFD. I just hope the same doesn't happen with other filesystems.
> 
> Can you produce a reproducible set of steps for this? Because the  
> Finder shouldn't be doing any of this work on its own, all the  
> normalization stuff happens directly in HFS+.

Simple : on a Linux host, create files with NFC names, and create an iso
image with mkisofs, with rockridge but no joliet. Burn this to a disc, and
insert the disc in your OSX host, and try to open files from the finder.
Interestingly, IIRC, Finder is able to copy the files, though.

As a bonus, try the same with an iso volume name in NFC, it's even better :
the created mount point is NFD, but it tries to mount on the name in NFC and
fails. And then you just can't eject the CD anymore.

Mike