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-rw-r--r--cpp/makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/cpp/makefile b/cpp/makefile
index 554c6c45..4fbe6759 100644
--- a/cpp/makefile
+++ b/cpp/makefile
@@ -5,7 +5,7 @@ mu: makefile tangle/tangle mu.cc
 # To see what the program looks like after all layers have been applied, read
 # mu.cc
 mu.cc: 0*
-	./tangle/tangle --until 999 > mu.cc
+	./tangle/tangle --until 999 |grep -v "^\s*//:" > mu.cc
 	@make autogenerated_lists >/dev/null
 
 tangle/tangle: