/usr/share/emacs/site-lisp/t-code/tc-complete.el is in t-code 2:2.3.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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;; Copyright (C) 2001 KITAJIMA Akira.
;; Author: KITAJIMA Akira <kitajima@isc.osakac.ac.jp>
;; Maintainer: KITAJIMA Akira
;; Keyword: completion
;; Created: Jul 31, 2001
;; $Id: tc-complete.el,v 1.17 2003/03/03 06:46:45 kitajima Exp $
;; This program 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 of the License, or
;; (at your option) any later version.
;;
;; This program 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 this program; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
;;; Code:
(require 'tc)
(defcustom tcode-complete-max-candidate-count 3
"*Êä´°¤ÎºÝ¤ÎºÇÂç¸õÊä¿ô¡£"
:type 'integer :group 'tcode)
(defcustom tcode-complete-min-context-length 3
"*Êä´°¤ÎºÝ¤Îʸ̮¤ÎºÇ¾®Ä¹¡£"
:type 'integer :group 'tcode)
(defcustom tcode-complete-max-context-length 8
"*Êä´°¤ÎºÝ¤Îʸ̮¤ÎºÇÂçĹ¡£"
:type 'integer :group 'tcode)
(defcustom tcode-complete-delay 0.5
"*¸õÊ䤬ɽ¼¨¤µ¤ì¤ë¤Þ¤Ç¤ÎÂÔ¤Á»þ´Ö¡£"
:type 'float :group 'tcode)
(defcustom tcode-complete-dictionary-name "complete.dic"
"*Êä´°¼½ñ¤Î¥Õ¥¡¥¤¥ë̾¡£"
:type 'string :group 'tcode)
(defconst tcode-complete-buffer-name " *tcode: complete dictionary*")
;; Êä´°¼½ñ¤Î¥Ð¥Ã¥Õ¥¡Ì¾
(defcustom tcode-complete-mazegaki-prefix-length 3
"*¸ò¤¼½ñ¤ÊÑ´¹¼½ñ¤«¤é¤ÎÊä´°¤Î¾ì¹ç¤ËÀÜƬ¼¤È¤ß¤Ê¤¹Ê¸»ú¿ô¡£")
;;; ¼½ñ¤ÎÅÐÏ¿
(unless (assq tcode-complete-buffer-name tcode-dictionaries)
(setq tcode-dictionaries (cons (cons tcode-complete-buffer-name
tcode-complete-dictionary-name)
tcode-dictionaries)))
(defvar tcode-complete-candidate-list nil)
;; Êä´°¸õÊä¤òÊÝ»ý¤¹¤ëÊÑ¿ô
(make-variable-buffer-local 'tcode-complete-candidate-list)
(defvar tcode-message-overlay nil)
(make-variable-buffer-local 'tcode-message-overlay)
(defvar tcode-message-overlay-prefix ">")
(defvar tcode-message-overlay-suffix "<")
;;;
;;; ¥ª¡¼¥Ð¥ì¥¤¤òÍѤ¤¤¿¥á¥Ã¥»¡¼¥¸É½¼¨
;;;
(defun tcode-overlay-message (str)
"overlay¤òÍѤ¤¤Æ¡¢¸½ºß¤Î¹Ô¤Ë¥á¥Ã¥»¡¼¥¸(STR)¤òɽ¼¨¤¹¤ë¡£"
(save-excursion
(insert tcode-message-overlay-prefix))
(let ((point (point))
(nol (apply '+ (mapcar (lambda (c)
(if (= c ?\n)
1
0))
(string-to-list str)))))
(setq tcode-message-overlay
(if (overlayp tcode-message-overlay)
(move-overlay tcode-message-overlay (point) (1+ point))
(make-overlay point (1+ point))))
(overlay-put tcode-message-overlay
'after-string
(concat str tcode-message-overlay-suffix))
;; ɽ¼¨¤¹¤ë¤È±£¤ì¤ë¾ì¹ç¤ÏºÆɽ¼¨
(if (>= (+ (count-lines (window-start) (point)) nol 1)
(1- (window-height)))
(recenter (1- (- nol))))))
(defun tcode-delete-overlay-message ()
"`tcode-overlay-message'¤Çɽ¼¨¤µ¤ì¤¿¥á¥Ã¥»¡¼¥¸¤ò¾Ã¤¹¡£"
(interactive)
(when (overlayp tcode-message-overlay)
(save-excursion
(goto-char (overlay-start tcode-message-overlay))
(if (looking-at (regexp-quote tcode-message-overlay-prefix))
(delete-region (match-beginning 0) (match-end 0))))
(delete-overlay tcode-message-overlay)
(redraw-frame (selected-frame))))
;;;
;;; ¼½ñ´ÉÍý
;;;
;;;###autoload
(defun tcode-complete-reload-dictionary ()
"Êä´°¼½ñ¤òºÆÆɤ߹þ¤ß¤¹¤ë¡£"
(interactive)
(tcode-set-work-buffer tcode-complete-buffer-name
tcode-complete-dictionary-name
t))
(defun tcode-complete-lookup (prefix)
"Êä´°ÍѼ½ñ¤«¤éPREFIX¤ò»ý¤Ä¸õÊä¤òõ¤¹¡£"
(save-excursion
(tcode-set-work-buffer tcode-complete-buffer-name
tcode-complete-dictionary-name)
(goto-char (point-min))
(let ((prefix-regexp (concat "^" (regexp-quote prefix)))
candidate-list)
(catch 'overflow
(while (search-forward-regexp prefix-regexp nil t)
(beginning-of-line)
(let ((candidate (if (looking-at "^.+ \\(.+\\)$")
(buffer-substring (match-beginning 1)
(match-end 1))
(buffer-substring (point)
(progn (end-of-line) (point))))))
(unless (string= candidate prefix)
(setq candidate-list (cons candidate candidate-list))
(if (> (length candidate-list)
tcode-complete-max-candidate-count)
(throw 'overflow nil))))
(forward-line 1))
(reverse candidate-list)))))
(defun tcode-complete-switch-to-dictionary ()
"¥Ð¥Ã¥Õ¥¡¤òÊä´°ÍѼ½ñ¤ËÀÚ¤êÂؤ¨¤ë¡£"
(interactive)
(switch-to-buffer
(tcode-set-work-buffer tcode-complete-buffer-name
tcode-complete-dictionary-name)))
(defun tcode-complete-add-to-dictionary (beg end)
"¥ê¡¼¥¸¥ç¥ó¤Ç»ØÄꤷ¤¿¸ì¤òÊä´°ÍѼ½ñ¤ËÅÐÏ¿¤¹¤ë¡£"
(interactive "r")
(let ((str (buffer-substring beg end)))
(save-excursion
(tcode-set-work-buffer tcode-complete-buffer-name
tcode-complete-dictionary-name)
(goto-char (point-min))
(insert str "\n"))))
(defun tcode-complete-copy-entry-from-mazegaki-dictionary (prefix candidate)
(save-excursion
;; Êä´°¼½ñ¤ËÅÐÏ¿ºÑ¤ß¤«¤É¤¦¤«Ä´¤Ù¤ë¡£
(tcode-set-work-buffer tcode-complete-buffer-name
tcode-complete-dictionary-name)
(goto-char (point-min))
(let* ((search-string (concat "\\(^\\| \\)" (regexp-quote candidate) "$"))
(found (catch 'found
(while (search-forward-regexp search-string nil t)
(save-excursion
(beginning-of-line)
(if (or (looking-at search-string)
(looking-at (regexp-quote prefix)))
(throw 'found t)))))))
(unless found
;; Êä´°¼½ñ¤Ë¤Ï¤Ê¤«¤Ã¤¿¤Î¤ÇÄɲ乤롣
;; Æɤߤò¸ò¤¼½ñ¤ÊÑ´¹¼½ñ¤«¤éÄ´¤Ù¤ë¡£
(tcode-mazegaki-switch-to-dictionary)
(tcode-mazegaki-search-yomi (regexp-quote prefix))
(when (and (search-forward
(concat "/" (regexp-quote candidate) "/") nil t)
(save-excursion
(beginning-of-line)
(looking-at (regexp-quote prefix))))
;; ÅÐÏ¿¤¹¤ë¤Ù¤¸õÊä¤ò¸«¤Ä¤±¤¿¡£
(beginning-of-line)
(looking-at (concat "\\(" prefix ".*\\) /"))
(let ((yomi (match-string 1)))
;; Æɤßyomi¸õÊäcandidate¤ÇÅÐÏ¿¤¹¤ë¡£
(tcode-set-work-buffer tcode-complete-buffer-name
tcode-complete-dictionary-name)
(goto-char (point-min))
(insert (format "%s %s\n" yomi candidate))))))))
;;;
;;; Êä´°ÆþÎÏ
;;;
;;;###autoload
(defun tcode-complete-insert (n)
"¸½ºß¤Îʸ̮¤«¤é¿äÄê¤Ç¤¤ëÆþÎϸõÊä¤òÁÞÆþ¤¹¤ë¡£
N¤¬»ØÄꤵ¤ì¤¿¾ì¹ç¤Ï¡¢NÈÖÌܤθõÊä¤Ë¤Ê¤ë¡£"
(interactive "*p")
(when tcode-complete-candidate-list
(delete-region (car (car tcode-complete-candidate-list)) (point))
(let ((prefix (cdr (car tcode-complete-candidate-list)))
(candidate (nth (if (>= n 0)
(1- n)
(+ (length (cdr tcode-complete-candidate-list)) n))
(cdr tcode-complete-candidate-list))))
(tcode-complete-copy-entry-from-mazegaki-dictionary prefix candidate)
(tcode-insert candidate))
(tcode-complete-display)))
(global-set-key (kbd "M-RET") 'tcode-complete-insert)
;;;
;;; Êä´°¸õÊäÃê½Ð
;;;
(defun tcode-complete-scan-backward ()
"¸½ºß¤Î¥Ý¥¤¥ó¥È¤«¤éʸ̮¤òÆÀ¤ë¡£
ʸ̮¤Ï¥ê¥¹¥È¹½Â¤¤Ç¤¢¤ê¡¢¥ê¥¹¥È¤ÎÍ×ÁǤÏ(POINT . \"ʸ»úÎó\")¤Ç¤¢¤ë¡£
¤³¤³¤Ç¡¢¡Öʸ»úÎó¡×¤Ï¡¢POINT¤«¤é»Ï¤Þ¤ë¸½ºß¤Î¥Ý¥¤¥ó¥È¤Þ¤Ç¤Îʸ»úÎó¤Ç¤¢¤ë¡£
ʸ»úÎó¤ÎŤµ¤Ï`tcode-complete-max-context-length'¤Þ¤Ç¤Ç¤¢¤ë¡£"
(let ((raw-context (tcode-scan-backward tcode-complete-max-context-length))
context)
(while raw-context
(setq context (cons (cons (car (car raw-context))
(mapconcat 'cdr raw-context nil))
context)
raw-context (cdr raw-context)))
(reverse context)))
(defun tcode-complete-search-candidate (context)
"¼½ñ¤«¤éʸ̮¤Ë¹ç¤¦¸õÊä¤òõ¤¹¡£"
(catch 'found
(while context
(let ((candidate-list (append (tcode-complete-lookup (cdr (car context)))
(and (= tcode-complete-mazegaki-prefix-length
(length context))
(tcode-mazegaki-lookup-with-prefix
(string-to-list (cdr (car context)))))))
result)
(while candidate-list
(let ((candidate (car candidate-list)))
(setq result (nconc result (list candidate))
candidate-list (delete candidate candidate-list))))
(if result
(throw 'found (cons (car context) result))))
(setq context (cdr context)))))
(defun tcode-complete-make-candidate-list-string (prefix candidate-list)
"Êä´°¸õÊä¤Î¥ê¥¹¥È¤òɽ¤¹Ê¸»úÎó¤òºî¤ë¡£"
(format "%s%s"
(let ((candidate (car candidate-list)))
(if (string= prefix
(substring candidate 0 (length prefix)))
(substring candidate (length prefix))
(concat "(" candidate ")")))
(let ((candidate-list (mapcar (lambda (candidate)
(substring candidate
(length prefix)))
(cdr candidate-list))))
(if candidate-list
(concat " ["
(let ((count 1))
(mapconcat (lambda (candidate)
(format "%d)%s"
(setq count (1+ count))
candidate))
(cdr candidate-list)
" "))
"]"))
"")))
(defun tcode-complete-display ()
"¸½ºß¤Îʸ̮¤«¤é¿äÄê¤Ç¤¤ëÆþÎϸõÊä¤òɽ¼¨¤¹¤ë¡£"
(interactive)
(let* ((candidates (tcode-complete-search-candidate
(tcode-complete-scan-backward)))
(real-candidate-list (cdr candidates))
(prefix (cdr (car candidates)))
(noc (length real-candidate-list)))
(if (or (> noc tcode-complete-max-candidate-count)
(< (length (string-to-list prefix))
tcode-complete-min-context-length))
(setq tcode-complete-candidate-list nil)
(setq tcode-complete-candidate-list candidates)
(when (and candidates
(not (window-minibuffer-p (selected-window))))
(unwind-protect
(progn
(tcode-overlay-message
(tcode-complete-make-candidate-list-string
prefix real-candidate-list))
(tcode-verbose-message (tcode-substitute-command-keys
"¡Ö\\[tcode-complete-insert]¡×¤ÇÊä´°"))
(sit-for 5))
(tcode-delete-overlay-message))))))
(defun tcode-complete-display-function ()
(if (and (tcode-on-p)
(memq last-command tcode-input-command-list)
(sit-for tcode-complete-delay))
(tcode-complete-display)))
(add-hook 'post-command-hook 'tcode-complete-display-function)
(provide 'tc-complete)
;;; tc-complete.el ends here
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