rspace tracing

[scpubgit/DX.git] / lib / DX / Step / Backtrack.pm

diff --git a/lib/DX/Step/Backtrack.pm b/lib/DX/Step/Backtrack.pm
index f693c49..a7c107b 100644 (file)
--- a/lib/DX/Step/Backtrack.pm
+++ b/lib/DX/Step/Backtrack.pm
@@ -9,6 +9,10 @@ sub apply_to {
   trace backtrack => [ statement => [ [ symbol => 'backtrack' ] ] ];
   foreach my $adj (@{$ss->decisions_taken}) {
     my ($rspace_was, $ss_was) = @$adj;
+    trace rspace => [ statement => [
+      [ symbol => 'remaining' ],
+      @{$rspace_was->remaining_resolution_space->for_deparse->[1]}
+    ] ];
     return $ss_was->but(
       next_step => $rspace_was->remaining_resolution_space->next_step
     );