Function show_submodule_inline_diff

submodule.c:654–743

}

void show_submodule_inline_diff(struct diff_options *o, const char *path,
		struct object_id *one, struct object_id *two,
		unsigned dirty_submodule)
{
	const struct object_id *old_oid = the_hash_algo->empty_tree, *new_oid = the_hash_algo->empty_tree;
	struct commit *left = NULL, *right = NULL;
	struct commit_list *merge_bases = NULL;
	struct child_process cp = CHILD_PROCESS_INIT;
	struct strbuf sb = STRBUF_INIT;
	struct repository *sub;

	sub = open_submodule(path);
	show_submodule_header(o, path, one, two, dirty_submodule,
			      sub, &left, &right, &merge_bases);

	/* We need a valid left and right commit to display a difference */
	if (!(left || is_null_oid(one)) ||
	    !(right || is_null_oid(two)))
		goto done;

	if (left)
		old_oid = one;
	if (right)
		new_oid = two;

	cp.git_cmd = 1;
	cp.dir = path;
	cp.out = -1;
	cp.no_stdin = 1;

	/* TODO: other options may need to be passed here. */
	strvec_pushl(&cp.args, "diff", "--submodule=diff", NULL);
	strvec_pushf(&cp.args, "--color=%s", want_color(o->use_color) ?
			 "always" : "never");

	if (o->flags.reverse_diff) {
		strvec_pushf(&cp.args, "--src-prefix=%s%s/",
			     o->b_prefix, path);
		strvec_pushf(&cp.args, "--dst-prefix=%s%s/",
			     o->a_prefix, path);
	} else {
		strvec_pushf(&cp.args, "--src-prefix=%s%s/",
			     o->a_prefix, path);
		strvec_pushf(&cp.args, "--dst-prefix=%s%s/",
			     o->b_prefix, path);
	}
	strvec_push(&cp.args, oid_to_hex(old_oid));
	/*
	 * If the submodule has modified content, we will diff against the
	 * work tree, under the assumption that the user has asked for the
	 * diff format and wishes to actually see all differences even if they
	 * haven't yet been committed to the submodule yet.
	 */
	if (!(dirty_submodule & DIRTY_SUBMODULE_MODIFIED))
		strvec_push(&cp.args, oid_to_hex(new_oid));

	prepare_submodule_repo_env(&cp.env);