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-rw-r--r--tool/m4/ruby_rm_recursive.m41
1 files changed, 1 insertions, 0 deletions
diff --git a/tool/m4/ruby_rm_recursive.m4 b/tool/m4/ruby_rm_recursive.m4
index cfa9e308bd..e33ba1d97a 100644
--- a/tool/m4/ruby_rm_recursive.m4
+++ b/tool/m4/ruby_rm_recursive.m4
@@ -1,3 +1,4 @@
+# -*- Autoconf -*-
AC_DEFUN([RUBY_RM_RECURSIVE], [
m4_version_prereq([2.70], [-1], [
# suppress error messages, rm: cannot remove 'conftest.dSYM', from