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-rw-r--r--lib/tracer.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/tracer.rb b/lib/tracer.rb
index 893a9d5827..71aa49c306 100644
--- a/lib/tracer.rb
+++ b/lib/tracer.rb
@@ -162,6 +162,6 @@ if $0 == __FILE__
ARGV.shift
Tracer.on
require $0
-else
+elsif caller(0).size == 1
Tracer.on
end