Re: On pathnames

On Thu, 24 Jan 2008 13:02:54 -0800
Junio C Hamano [off-list ref] wrote:

One bad issue during development is that we cannot sanely
emulate case folding behaviour on non case-folding filesystems
without wrapping open(2), lstat(2), and friends, because of the
assumption we made above in (2) where we defined the term "case
folding".  This means that the codepath to deal with case
folding filesystems inevitably are harder to debug.

All true.  Though Linux support for creating and using HFS+ volumes
seems like it may be helpful.  Trying the test case patch[*] posted
by Mitch Tishmack showed the problem here.  The only slightly
strange thing was that there didn't seem to be an issue with the
gitweb/test/Märchen file after cloning to the HFS volume.

Sean.

[*]
$ dd bs=1M count=250 < /dev/zero > hfs_vol
  262144000 bytes (262 MB) copied, 6.12703 s, 42.8 MB/s

$ /sbin/mkfs.hfsplus -v Test -n c=4096,e=1024 hfs_vol
  Initialized hfs_vol as a 250 MB HFS Plus volume

$ mkdir hfs
$ sudo mount -t hfsplus -o loop hfs_vol hfs
$ sudo chmod a+rwx hfs
$ cd hfs
$ git clone ~/local/sources/git
  Initialized empty Git repository in ~/hfs/git/.git/
  49486 blocks

$ cd git
$ make
   ...

$ cd t
$ git apply ~/Mitch_Tishmack.patch
$ ./t0060-normalization.sh
  * FAIL 1: setup

	  touch ä &&
	  git add ä &&
	  git commit -m "initial"
	  git tag initial &&
	  git checkout -b topic &&
	  git mv ä tmp &&
	  git mv tmp ä &&
	  git commit -m "rename" &&
	  git checkout -f master
	
  * FAIL 2: rename (silent normalization)
	
	 git mv ä ä &&
	 git commit -m "rename"
	
  * FAIL 3: merge (silent normalization)

	 git reset --hard initial &&
	 git merge topic
	
  * failed 3 among 3 test(s)

Sean.