Re: [Outreachy][PATCH v6] diff: do not show submodule with untracked files as "-dirty"

[Sangeeta <sangunb09@gmail.com>]

Hey,

I worked on passing --ignore-submodules=none as the default behavior
of git status so that the user doesn't end up deleting a submodule
that has uncommitted (untracked) files.

The following changes make git status pass the ignoreSubmodules none
argument as default.

@@ -4587,7 +4587,7 @@ void repo_diff_setup(struct repository *r,
struct diff_options *options)
        options->orderfile = diff_order_file_cfg;

        if (!options->flags.ignore_submodule_set)
-               handle_ignore_submodules_arg(options, "untracked");
+               options->flags.ignore_untracked_in_submodules = 1;

        if (diff_no_prefix) {
                options->a_prefix = options->b_prefix = "";


@@ -607,6 +607,9 @@ static void
wt_status_collect_changes_worktree(struct wt_status *s)
                rev.diffopt.flags.override_submodule_config = 1;
                handle_ignore_submodules_arg(&rev.diffopt,
s->ignore_submodule_arg);
        }
+       else if(!rev.diffopt.flags.ignore_submodule_set){
+               handle_ignore_submodules_arg(&rev.diffopt, "none");
+       }

I have had to set the flag manually in diff.c because when we call
handle_ignore_submodules_arg() with "untracked" arg,
options->flags.ignore_submodule_set is set to 1 and therefore when we
check for it in wt-status.c it appears that user has already set some
config and therefore we shouldn't add "none" as ignoreSubmodules arg.

Another way to do that is to have one more flag in diff_options that
can let us know whether options->flags.ignore_submodule_set was set by
the user or by diff passing untracked as the default argument.

Can someone please help me with what might be the right way to proceed?

Thanks!