Fixed indentation for conf mode

.emacs.d/settings.org

@@ -31,6 +31,10 @@ Indent using tabs, render with tab-width of 2.
   (setq sh-indentation 2)
   (smart-tabs-insinuate 'c 'c++ 'java 'javascript 'python)
 
+  (add-hook 'conf-mode-hook
+            (lambda ()
+              (setq indent-line-function #'insert-tab
+                    indent-tabs-mode t)))
 
 #+END_SRC
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