Re: [PATCH] Handle double slashes in make_relative_path()

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söndagen den 24 januari 2010 19.31.01 skrev  Junio C Hamano:
> Johannes Sixt <j6t@xxxxxxxx> writes:
> > On Samstag, 23. Januar 2010, Johannes Sixt wrote:
> >> On Samstag, 23. Januar 2010, Junio C Hamano wrote:
> >> > What happens if you did this?
> >> >
> >> > 	git --git-dir=//git/repo/repo.git --work-tree=/git/repo
> >> >
> >> > where "//git/repo" is on the "git server" and you are working in local
> >> > hierarchy "/git/repo"?
> >>
> >> Ah, right, this would not do the right thing. (But I can't verify this
> >> claim right now.)
> >
> > I tested it, and it does the right thing. The reason is that before
> > setup_work_tree() calls make_relative_path(), the --work-tree argument
> > has been processed by make_absolute_path(), which adds the drive prefix.
> >
> > As long as setup_work_tree() remains the only caller of
> > make_relative_path(), we are safe.
> 
> Thanks; I think a more correct description of your findings is:
> 
>  - msysgit's make_absolute_path() does the right thing (i.e. adds "drive
>    prefix" to "git/repo" given to --work-tree); and
> 
>  - as long as the callers feed what the platform considers absolute paths
>    in abs and base, make_relative_path() does the right thing.
> 
> So I think we are Ok.  We _might_ want to add Windows-only test at the
> beginning of make_relative_path() to make sure that the both inputs have
> double-slashes at the beginning to catch future broken callers, but I
> think that is a separate topic, and we don't have to do that as long as
> setup_work_tree(0 remains the only caller, as you said.

Separate patch posted since this problem occurs in more than one place. 

-- robin
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