;;; prolog.el --- major mode for editing and running Prolog under Emacs
-;; Copyright (C) 1986, 1987, 2001, 2002, 2003, 2004, 2005, 2006
+;; Copyright (C) 1986, 1987, 2001, 2002, 2003, 2004, 2005, 2006, 2007
;; Free Software Foundation, Inc.
;; Author: Masanobu UMEDA <umerin@mse.kyutech.ac.jp>
;; 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 2, or (at your option)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
(let ((map (make-sparse-keymap)))
;; This map will inherit from `comint-mode-map' when entering
;; inferior-prolog-mode.
+ (define-key map [remap self-insert-command]
+ 'inferior-prolog-self-insert-command)
map))
(defvar inferior-prolog-mode-syntax-table prolog-mode-syntax-table)
;; Try again.
(inferior-prolog-process))))
+(defvar inferior-prolog-flavor 'unknown
+ "Either a symbol or a buffer position offset by one.
+If a buffer position, the flavor has not been determined yet and
+it is expected that the process's output has been or will
+be inserted at that position plus one.")
+
+(defun inferior-prolog-guess-flavor (&optional ignored)
+ (save-excursion
+ (goto-char (1+ inferior-prolog-flavor))
+ (setq inferior-prolog-flavor
+ (cond
+ ((looking-at "GNU Prolog") 'gnu)
+ ((looking-at "Welcome to SWI-Prolog") 'swi)
+ ((looking-at ".*\n") 'unknown) ;There's at least one line.
+ (t inferior-prolog-flavor))))
+ (when (symbolp inferior-prolog-flavor)
+ (remove-hook 'comint-output-filter-functions
+ 'inferior-prolog-guess-flavor t)
+ (if (eq inferior-prolog-flavor 'gnu)
+ (set (make-local-variable 'comint-process-echoes) t))))
+
;;;###autoload
(defalias 'run-prolog 'switch-to-prolog)
;;;###autoload
(inferior-prolog-run name))
(pop-to-buffer inferior-prolog-buffer))
+(defun inferior-prolog-self-insert-command ()
+ "Insert the char in the buffer or pass it directly to the process."
+ (interactive)
+ (let* ((proc (get-buffer-process (current-buffer)))
+ (pmark (and proc (marker-position (process-mark proc)))))
+ (if (and (eq inferior-prolog-flavor 'gnu)
+ pmark
+ (null current-prefix-arg)
+ (eobp)
+ (eq (point) pmark)
+ (save-excursion
+ (goto-char (- pmark 3))
+ (looking-at " \\? ")))
+ (comint-send-string proc (string last-command-char))
+ (call-interactively 'self-insert-command))))
+
(defun prolog-consult-region (compile beg end)
"Send the region to the Prolog process made by \"M-x run-prolog\".
If COMPILE (prefix arg) is not nil, use compile mode rather than consult mode."
If COMPILE (prefix arg) is not nil, use compile mode rather than consult mode."
(interactive "P\nr")
(prolog-consult-region compile beg end)
- (switch-to-buffer "*prolog*"))
+ (pop-to-buffer inferior-prolog-buffer))
(defun inferior-prolog-load-file ()
"Pass the current buffer's file to the inferior prolog process."