Re: [PATCH/RFC] add--interactive: ignore all internal submodule changes

[Stefan Beller <sbeller@google.com>]

On Wed, Jan 10, 2018 at 3:06 AM, Nguyễn Thái Ngọc Duy <pclouds@gmail.com> wrote:
> For 'add -i' and 'add -p' the only action we can take on a dirty
> submodule entry (from the superproject perspective) is its SHA-1. The
> content changes inside do not matter, at least until interactive add has
> --recurse-submodules or something.
>
> Ignore all dirty changes to reduce the questions 'add -i' and 'add -p'
> throw at the user when submodules are dirty.
>
> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
> ---
>  $DAYJOB started to use submodules and this annoys me so much when I
>  use 'git add -p'. I'm neither very familiar with add--interactive nor
>  submodules code but this seems to work. Hopefully it's a correct
>  change.

I would think this fixes your problem and it looks correct.

However I wonder about some subtle detail:
the "dirty" setting will ignore anything inside the submodule, and
only pay attention to the delta in gitlinks between HEAD and index.

Maybe we'd want to have a mode "dirty-except-submodule-HEAD",
which would ignore all submodule worktree changes, but if its HEAD
is different than the gitlink in the superproject index or HEAD, such that
checking out a different revision inside the submodule is not lost
when staging things in the superproject for a new commit?

>
>  git-add--interactive.perl | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/git-add--interactive.perl b/git-add--interactive.perl
> index 28b325d754..964c3a7542 100755
> --- a/git-add--interactive.perl
> +++ b/git-add--interactive.perl
> @@ -262,7 +262,7 @@ sub list_modified {
>                 }
>         }
>
> -       for (run_cmd_pipe(qw(git diff-files --numstat --summary --raw --), @ARGV)) {
> +       for (run_cmd_pipe(qw(git diff-files --ignore-submodules=dirty --numstat --summary --raw --), @ARGV)) {
>                 if (($add, $del, $file) =
>                     /^([-\d]+)  ([-\d]+)        (.*)/) {
>                         $file = unquote_path($file);
> --
> 2.15.1.600.g899a5f85c6
>