* lisp/international/mule.el (find-auto-coding): Include file name in

obsolescence warning.

Fixes: debbugs:13922

lisp/ChangeLog

+2013-03-13  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+	* international/mule.el (find-auto-coding): Include file name in
+	obsolescence warning (bug#13922).
+
 2013-03-12  Teodor Zlatanov  <tzz@lifelogs.com>
 	* progmodes/cfengine.el (cfengine-parameters-indent): New variable

lisp/international/mule.el

@@ -1844,8 +1844,11 @@ If nothing is specified, the return value is nil."
 		       (re-search-forward
 			"\\(.*;\\)?[ \t]*unibyte:[ \t]*\\([^ ;]+\\)"
 			head-end t))
-              (display-warning 'mule "`unibyte: t' is obsolete; \
-use \"coding: 'raw-text\" instead." :warning)
+              (display-warning 'mule
+                               (format "\"unibyte: t\" (in %s) is obsolete; \
+use \"coding: 'raw-text\" instead."
+                                       (file-relative-name filename))
+                               :warning)
 	      (setq coding-system 'raw-text))
 	    (when (and (not coding-system)
 		       (re-search-forward