Re: inconsistent behavior on mac with case changes

On Fri, Sep 14, 2012 at 9:48 AM, Andreas Ericsson [off-list ref] wrote:

On 09/14/2012 02:37 PM, Larry Martell wrote:

quoted

On Thu, Sep 13, 2012 at 5:24 PM, Larry Martell [off-list ref] wrote:

quoted

I created a dir on my Mac called Rollup, and pushed it out. Then went
to a CentOS box, pulled it, and realized I wanted to call it RollUp
(capital U). I renamed it, and pushed out the change. Went back to the
Mac and did a pull - it said it created the RollUp dir, but it did not
- it was still called Rollup. I reamed it, but status did not pick up
the change. Then I checked out a branch that had Rollup, but it was
gone there - no Rollup or RollUp. I did a merge and then RollUp was
created.

I know the Mac is somewhat inconsistent with how it deals with case, e.g.:

$ ls
RollUp
$ ls -d Rollup
Rollup
$ ls -d RollUp
RollUp
$ find . -name Rollup -print
$ find . -name RollUp -print
./RollUp

So I guess I can understand git also being inconsistent there. But
what really got me was the dir being gone on the branch.

Is all this expected behavior?

More or less. Git sees Rollup and RollUp as two different directories,
so assuming everything inside it is committed git is free to remove
the directory that exists on one branch but not the other when switching
branches in order to keep the work tree in sync with the index.

Consider this (most output cut away):

git init
touch base; git add base git commit -m "first commit"
mkdir foo && touch foo/lala && git add foo/lala && git commit -m "meh"
git checkout -b newbranch HEAD^
ls -ld foo
ls: cannot access foo.: No such file or directory
mkdir bar && touch bar/bear && git add bar/bear && git commit -m "rawr"
git checkout master
ls -ld bar
ls: cannot access bar.: no such file or directory

If git would leave your committed directory in the worktree when you
move to a branch that doesn't have it, it would put you in a very
weird position where you may have to clear away rubble from someone
else, or start depending on code that's not in your branch. So yes,
you're seeing the expected behaviour, and OSX is retarded wrt case
sensitive filenames. I'd suggest you either reformat your drive to
stop using HFS+ or do your development work inside a loopback fs
mounted with proper case sensitivity, as there's really no sane way
around the problem OSX causes.

Thanks for the detailed reply!