/usr/share/emacs/site-lisp/chess/chess-phalanx.el is in emacs-chess 2.0b6-1.1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | ;;; chess-phalanx.el --- Play chess against phalanx!
;; Copyright (C) 2002, 2004 Free Software Foundation, Inc.
;; Author: John Wiegley
;; Maintainer: Mario Lang <mlang@delysid.org>
;; Keywords: games, processes
;; This file 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 2, or (at your option)
;; any later version.
;; This file 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; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
(require 'chess-common)
(defgroup chess-phalanx nil
"The publically available chess engine 'phalanx'."
:group 'chess-engine
:link '(url-link "http://dusan.freeshell.org/phalanx/"))
(defcustom chess-phalanx-path (executable-find "phalanx")
"The path to the phalanx executable."
:type 'file
:group 'chess-phalanx)
(defvar chess-phalanx-regexp-alist
(list
(cons (concat "my move is P?\\(" chess-algebraic-regexp "\\)\\s-*$")
(function
(lambda ()
(funcall chess-engine-response-handler 'move
(chess-engine-convert-algebraic (match-string 1) t)))))
(cons "Illegal move:\\s-*\\(.*\\)"
(function
(lambda ()
(error (match-string 1)))))))
(defun chess-phalanx-handler (game event &rest args)
(unless chess-engine-handling-event
(cond
((eq event 'initialize)
(let ((proc (chess-common-handler game 'initialize "phalanx")))
(when (and proc (processp proc)
(eq (process-status proc) 'run))
(process-send-string proc "nopost\n")
(setq chess-engine-process proc
chess-engine-opponent-name "Phalanx")
t)))
((eq event 'resign)
(chess-game-set-data game 'active nil))
(t
(apply 'chess-common-handler game event args)))))
(provide 'chess-phalanx)
;;; chess-phalanx.el ends here
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