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-rw-r--r--tool/m4/ruby_append_options.m42
1 files changed, 1 insertions, 1 deletions
diff --git a/tool/m4/ruby_append_options.m4 b/tool/m4/ruby_append_options.m4
index 164a4ab654..14213111ca 100644
--- a/tool/m4/ruby_append_options.m4
+++ b/tool/m4/ruby_append_options.m4
@@ -1,4 +1,4 @@
-# -*- Autoconf -*-
+dnl -*- Autoconf -*-
AC_DEFUN([RUBY_APPEND_OPTIONS],
[# RUBY_APPEND_OPTIONS($1)
for rb_opt in $2; do