Re: [RFC PATCH v1 3/6] stash: remove the second index in stash_patch()

>
> This removes the second index used in stash_patch().
>
> This function starts by resetting the index (which is set at `i_tree')
> to HEAD, which has been stored in `b_commit' by do_create_stash(), and
> the call to `read-tree' is replaced by reset_tree().  The index is
> discarded after run_add_interactive(), but not `diff-tree' as this
> command should not change it.
>
> Since the index has been changed, and subsequent code might be sensitive
> to this, it is reset to `i_tree' at the end of the function.

>         /* State of the working tree. */
> -       if (write_index_as_tree(&info->w_tree, &istate, stash_index_path.buf, 0,
> -                               NULL)) {
> -               ret = -1;
> -               goto done;
> -       }
> +       discard_cache();
> +       if (write_cache_as_tree(&info->w_tree, 0, NULL))
> +               return -1;