patch 7.4.744
Problem:    No tests for Ruby and Perl.
Solution:   Add minimal tests. (Ken Takata)
diff --git a/src/testdir/test_ruby.ok b/src/testdir/test_ruby.ok
new file mode 100644
index 0000000..a217efd
--- /dev/null
+++ b/src/testdir/test_ruby.ok
@@ -0,0 +1,3 @@
+1 changed line 1
+2 line 2
+abc/def