Re: [PATCH] fast-export: Avoid dropping files from commits

> From: Elijah Newren <newren@gmail.com>
> 
> When exporting a subset of commits on a branch that do not go back to a
> root commit (e.g. master~2..master), we still want each exported commit to
> have the same files in the exported tree as in the original tree.
> 
> Signed-off-by: Elijah Newren <newren@gmail.com>
> ---

>  builtin-fast-export.c  |    3 ++-
>  t/t9301-fast-export.sh |    7 +++++--
>  2 files changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/builtin-fast-export.c b/builtin-fast-export.c
> index fdf4ae9..34a419c 100644
> --- a/builtin-fast-export.c
> +++ b/builtin-fast-export.c
> @@ -221,7 +221,8 @@ static void handle_commit(struct commit *commit, struct rev_info *rev)
>  	if (message)
>  		message += 2;
>  
> -	if (commit->parents) {
> +	if (commit->parents &&
> +	    get_object_mark(&commit->parents->item->object) != 0) {
>  		parse_commit(commit->parents->item);
>  		diff_tree_sha1(commit->parents->item->tree->object.sha1,
>  			       commit->tree->object.sha1, "", &rev->diffopt);