Re: [PATCH v3 1/2] worktrees: add die_if_shared_symref

[David Turner <dturner@twopensource.com>]

On Fri, 2015-07-31 at 15:35 -0400, Eric Sunshine wrote:
> On Fri, Jul 31, 2015 at 3:01 PM, David Turner <dturner@twopensource.com> wrote:
> > Add a new function, die_if_shared_symref, which works like
> > die_if_checked_out, but for all references.  Refactor
> > die_if_checked_out to work in terms of die_if_shared_symref.
> >
> > Soon, we will use die_if_shared_symref to protect notes merges in
> > worktrees.
> 
> I wonder if the diagnostic:
> 
>     'blorp' is already checked out at '/path/name/'
> 
> emitted by check_linked_checkout() needs to be adjusted for this
> change. It still makes sense for die_if_checked_out(), but sounds odd
> for die_if_shared_symref().

How about:

'refs/notes/y' is already referenced from 'NOTES_MERGE_REF' in
'/home/dturner/git/t/trash directory.t3320-notes-merge-worktrees/'

Does that make sense?

It's not the only place in the error messages that mentions
NOTES_MERGE_REF, so I think we expect users to understand
NOTES_MERGE_REF.  The alternative is to move the error handling to an
even higher level so we can give a notes-specific message.  I don't
think that's necessary, but I'll do it if others do.

<snip; will fix>
> > + */
> > +extern void die_if_shared_symref(const char *symref, const char *branch);
> 
> s/branch/referent/ or something?

I went with "target" (by analogy to the target of a symlink).