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-rw-r--r--tool/mk_call_iseq_optimized.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/tool/mk_call_iseq_optimized.rb b/tool/mk_call_iseq_optimized.rb
index 0760ab2667..9b88c5eeb6 100644
--- a/tool/mk_call_iseq_optimized.rb
+++ b/tool/mk_call_iseq_optimized.rb
@@ -1,5 +1,6 @@
puts <<EOS
+/* -*- c -*- */
#if 1 /* enable or disable this optimization */
/* DO NOT EDIT THIS FILE DIRECTLY