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-rw-r--r--trace.mu2
1 files changed, 2 insertions, 0 deletions
diff --git a/trace.mu b/trace.mu
index f5287930..9dea105d 100644
--- a/trace.mu
+++ b/trace.mu
@@ -241,6 +241,8 @@ schedule:  done with routine")
     (loop-unless c:character)
     (quit?:boolean <- equal c:character ((#\q literal)))
     (break-if quit?:boolean)
+    (quit?:boolean <- equal c:character ((#\null literal)))
+    (break-if quit?:boolean)
     ; up/down navigation
     { begin
       (up?:boolean <- equal c:character ((up literal)))