+void
+Span_bar_engraver::acknowledge_bar_line (Grob_info i)
+{
+ int depth = i.origin_contexts (this).size ();
+ if (depth && !Span_bar::has_interface (i.grob ()))
+ {
+ Item *it = dynamic_cast<Item *> (i.grob ());
+ bars_.push_back (it);
+
+ if (bars_.size () >= 2 && !spanbar_)
+ {
+ spanbar_ = make_item ("SpanBar", SCM_EOL);
+
+ spanbar_->set_parent (bars_[0], X_AXIS);
+ }
+ }
+}
+
+void
+Span_bar_engraver::stop_translation_timestep ()
+{
+ if (spanbar_)
+ {
+ for (vsize i = 0; i < bars_.size (); i++)
+ Span_bar::add_bar (spanbar_, bars_[i]);
+
+ SCM vissym = ly_symbol2scm ("break-visibility");
+ SCM vis = bars_[0]->internal_get_property (vissym);
+ if (ly_is_equal (spanbar_->internal_get_property (vissym), vis))
+ spanbar_->set_property (vissym, vis);
+
+ spanbar_ = 0;
+ }
+ bars_.resize (0);
+}
+
+#include "translator.icc"
+
+ADD_ACKNOWLEDGER (Span_bar_engraver, bar_line);
+ADD_TRANSLATOR (Span_bar_engraver,
+ /* doc */
+ "Make cross-staff bar lines: It catches all normal bar lines"
+ " and draws a single span bar across them.",
+
+ /* create */
+ "SpanBar ",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );