On Thu, Dec 13, 2018 at 04:14:28PM -0500, Mike Rappazzo wrote:
> On Thu, Dec 13, 2018 at 3:48 PM Stefan Beller <sbeller@google.com> wrote:
> >
> > > > The current situation is definitely a problem.  If I am in a worktree,
> > > > using "head" should be the same as "HEAD".
> >
> > By any chance, is your file system case insensitive?
> > That is usually the source of confusion for these discussions.
> 
> This behavior is the same for MacOS (High Sierra) and Windows 7.  I
> assume other derivatives of those act the same.
> 
> On CentOS "head" is an ambiguous ref.  If Windows and Mac resulted in
> an ambiguous ref, that would also be OK, but as it is now, they return
> the result of "HEAD" on the primary worktree.

I'm pretty sure that we want HEAD to be only written as "HEAD". It's
known that systems with case-insensitive file systems sometimes allow
"head" instead of "HEAD" because the ref is written in the file system.

I think the improvement we'd want here is to reject HEAD being written
as "head" on those systems, but in a global way that affects all uses of
HEAD.
-- 
brian m. carlson: Houston, Texas, US
OpenPGP: https://keybase.io/bk2204