Function require_clean_work_tree

wt-status.c:2683–2725

* If the work tree has unstaged or uncommitted changes, dies with the * appropriate message. */

 * appropriate message.
 */
int require_clean_work_tree(struct repository *r,
			    const char *action,
			    const char *hint,
			    int ignore_submodules,
			    int gently)
{
	struct lock_file lock_file = LOCK_INIT;
	int err = 0, fd;

	fd = repo_hold_locked_index(r, &lock_file, 0);
	refresh_index(r->index, REFRESH_QUIET, NULL, NULL, NULL);
	if (0 <= fd)
		repo_update_index_if_able(r, &lock_file);
	rollback_lock_file(&lock_file);

	if (has_unstaged_changes(r, ignore_submodules)) {
		/* TRANSLATORS: the action is e.g. "pull with rebase" */
		error(_("cannot %s: You have unstaged changes."), _(action));
		err = 1;
	}

	if (has_uncommitted_changes(r, ignore_submodules)) {
		if (err)
			error(_("additionally, your index contains uncommitted changes."));
		else
			error(_("cannot %s: Your index contains uncommitted changes."),
			      _(action));
		err = 1;
	}

	if (err) {
		if (hint) {
			if (!*hint)
				BUG("empty hint passed to require_clean_work_tree();"
				    " use NULL instead");
			error("%s", hint);
		}
		if (!gently)
			exit(128);
	}

	return err;
}