Re: How to work on case-sensitive projects?
Re: How to work on case-sensitive projects?
- Subject: Re: How to work on case-sensitive projects?
- From: Kevin Van Vechten <email@hidden>
- Date: Wed, 7 Oct 2009 10:47:09 -0700
On Oct 7, 2009, at 10:40 AM, Alastair Houghton wrote:
On 7 Oct 2009, at 18:30, Kevin Van Vechten wrote:
On Oct 7, 2009, at 10:23 AM, Alastair Houghton wrote:
HFS+, however, has an option to be case-sensitive, and you can
format such a filesystem with Disk Utility or third-party software
such as (shameless plug) iPartition.
[...]
In the meantime, you can create a case-sensitive HFS+ filesystem
somewhere (e.g. in a disk image, in another partition, on an
external disk, or mounted over the network) where you'll get the
behaviour you want.
Minor nit: HFS+ is case-preserving but not case-sensitive. HFSX (a
minor revision to the HFS+ volume format) optionally supports case-
sensitive file names.
HFSX is really just a shorthand notation though. The UI generally
refers to "Mac OS Extended" (i.e. HFS+), and puts annotations such
as case-sensitive and journaled in parentheses afterwards.
IIRC the name "HFSX" comes from the Apple Partition Map type code
("Apple_HFSX") and *that* only exists to stop older software from
getting confused when it finds it, and only then because people
weren't checking the filesystem version number in the volume header.
When using command line utilities such as diskutil and hdiutil
you'll want to specify HFSX not HFS+.
Yes. That doesn't make HFSX the name, however, any more than JHFS+
or HFS+J is the name of HFS+ with a journal. I maintain that the
filesystem itself is either called "HFS+" or "Mac OS Extended" and
that case-sensitivity is an *option*.
This is borne out by the fact that there is only a single partition
type in GPTs for both kinds of HFS+.
Maintain all you want, but my comment was purely for practical
purposes. From hdiutil(1):
-fs filesystem
where filesystem is one of HFS+, HFS+J (JHFS+),
HFSX, JHFS+X, MS-DOS, or UDF.
Also, from TN1150 <http://developer.apple.com/mac/library/technotes/tn/tn1150.html
>:
"A variant of HFS Plus, called HFSX, allows volumes whose names are
compared in a case-sensitive fashion. The names are fully decomposed
and in canonical order, but no Unicode characters are ignored during
the comparison."
Kevin
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