On Wed, 2014-05-07 at 08:17 +0200, Johannes Sixt wrote:
> >             } else if (cache_name_pos(src, length) < 0)
> >                     bad = _("not under version control");
> > -           else if (lstat(dst, &st) == 0) {
> > +           else if (lstat(dst, &dst_st) == 0 &&
> > +                    (src_st.st_ino != dst_st.st_ino ||
> > +                     (src_st.st_ino == 0 && strcasecmp(src, dst)))) {
> 
> Don't do that. st_ino is zero on Windows only because we do not spend time
> to fill in the field. Don't use it as an indicator for a case-insensitive
> file system; zero may be a valid inode number on other systems.

I don't think it is a problem if zero is a valid inode.  The only thing
that happens when there is a zero inode, is that we have to compare
filenames.  The inode check is just an optimization to avoid doing a
bunch of strcasecmp on systems that don't have to.

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