+sub build_check_quilt_splitbrain () {
+ build_maybe_quilt_fixup();
+
+ if ($do_split_brain) {
+ fail <<END unless access_cfg_tagformats_can_splitbrain;
+quilt mode $quilt_mode requires split view so server needs to support
+ both "new" and "maint" tag formats, but config says it doesn't.
+END
+ }
+}
+
+sub unpack_playtree_need_cd_work ($) {