1 files changed, 21 insertions, 0 deletions
diff --git a/cpp/027debug.cc b/cpp/027debug.cc
index d81071e9..90ef9e49 100644
--- a/cpp/027debug.cc
+++ b/cpp/027debug.cc
@@ -19,3 +19,24 @@ case _PRINT: {
   }
   break;
 }
+
+:(before "End Primitive Recipe Declarations")
+_START_TRACING,
+:(before "End Primitive Recipe Numbers")
+Recipe_number["$start-tracing"] = _START_TRACING;
+:(before "End Primitive Recipe Implementations")
+case _START_TRACING: {
+  Trace_stream->dump_layer = "all";
+//?   cout << Trace_stream << ": " << Trace_stream->dump_layer << '\n'; //? 1
+  break;
+}
+
+:(before "End Primitive Recipe Declarations")
+_STOP_TRACING,
+:(before "End Primitive Recipe Numbers")
+Recipe_number["$stop-tracing"] = _STOP_TRACING;
+:(before "End Primitive Recipe Implementations")
+case _STOP_TRACING: {
+  Trace_stream->dump_layer = "";
+  break;
+}