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diff --git a/lisp/image/compface.el b/lisp/image/compface.el
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+;;; compface.el --- functions for converting X-Face headers
+
+;; Copyright (C) 2002-2016 Free Software Foundation, Inc.
+
+;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
+;; Keywords: news
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+;;;###
+(defun uncompface (face)
+  "Convert FACE to pbm.
+Requires the external programs `uncompface', and `icontopbm'.  On a
+GNU/Linux system these might be in packages with names like `compface'
+or `faces-xface' and `netpbm' or `libgr-progs', for instance."
+  (with-temp-buffer
+    (set-buffer-multibyte nil)
+    (insert face)
+    (let ((coding-system-for-read 'raw-text)
+	  ;; At least "icontopbm" doesn't work with Windows because
+	  ;; the line-break code is converted into CRLF by default.
+	  (coding-system-for-write 'binary))
+      (and (eq 0 (apply 'call-process-region (point-min) (point-max)
+			"uncompface"
+			'delete '(t nil) nil))
+	   (progn
+	     (goto-char (point-min))
+	     (insert "/* Format_version=1, Width=48, Height=48, Depth=1,\
+ Valid_bits_per_item=16 */\n")
+	     ;; Emacs doesn't understand un-raw pbm files.
+	     (eq 0 (call-process-region (point-min) (point-max)
+					"icontopbm"
+					'delete '(t nil))))
+	   (buffer-string)))))
+
+(provide 'compface)
+
+;;; compface.el ends here