1 ;;; liece-compat.el --- Provide compatibility for various emacsen.
2 ;; Copyright (C) 1998-2000 Daiki Ueno
4 ;; Author: Daiki Ueno <ueno@unixuser.org>
7 ;; Keywords: IRC, liece, APEL
9 ;; This file is part of Liece.
11 ;; This program is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; This program is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
32 (eval-when-compile (require 'cl))
37 (defalias 'liece-widget-convert-button 'widget-convert-button)
38 (defalias 'liece-widget-button-click 'widget-button-click)
40 (defun-maybe region-active-p ()
41 "Return non-nil if the region is active.
42 If `zmacs-regions' is true, this is equivalent to `region-exists-p'.
43 Otherwise, this function always returns false.
44 \[XEmacs emulating function]"
45 (static-if (and (boundp 'transient-mark-mode) (boundp 'mark-active))
46 (and transient-mark-mode mark-active)))
48 (defun liece-map-overlays (function)
49 "Map FUNCTION over the extents which overlap the current buffer."
50 (let* ((overlayss (overlay-lists))
51 (buffer-read-only nil)
52 (overlays (delq nil (nconc (car overlayss) (cdr overlayss)))))
53 (dolist (overlay overlays)
54 (funcall function overlay))))
56 (defun liece-kill-all-overlays ()
57 "Delete all overlays in the current buffer."
58 (liece-map-overlays #'delete-overlay))
60 (defmacro liece-get-buffer-window (buffer)
61 "Traverse all frames and return a window currently displaying BUFFER."
62 `(get-buffer-window ,buffer t))
64 (static-if (fboundp 'window-displayed-height)
65 (defalias 'liece-window-height 'window-displayed-height)
66 (defalias 'liece-window-height 'window-height))
68 (defalias 'liece-mode-line-buffer-identification 'identity)
70 (defun liece-suppress-mode-line-format ()
71 "Remove unnecessary information from `mode-line-format'."
72 (let ((value (rassq 'mode-line-modified mode-line-format)))
74 (setq mode-line-format (delq value (copy-sequence mode-line-format)))
77 (defun liece-locate-data-directory (name &optional dir-list)
78 "Locate a directory in a search path DIR-LIST (a list of directories)."
82 (mapcar (lambda (path) (concat path "etc/"))
86 (if (and (car dir-list)
90 (directory-file-name (car dir-list)))
93 (setq dir-list (cdr dir-list))))
96 (defvar-maybe completion-display-completion-list-function
97 'display-completion-list)
99 (defalias-maybe 'easy-menu-add-item 'ignore)
101 ;; from XEmacs's minibuf.el
102 (defun-maybe temp-minibuffer-message (m)
103 (let ((savemax (point-max)))
105 (goto-char (point-max))
108 (let ((inhibit-quit t))
110 (delete-region savemax (point-max)))))
112 ;; from XEmacs's subr.el
113 (defun-maybe replace-in-string (str regexp newtext &optional literal)
114 "Replace all matches in STR for REGEXP with NEWTEXT string,
115 and returns the new string.
116 Optional LITERAL non-nil means do a literal replacement.
117 Otherwise treat \\ in NEWTEXT string as special:
118 \\& means substitute original matched text,
119 \\N means substitute match for \(...\) number N,
120 \\\\ means insert one \\."
125 (while (setq match (string-match regexp str start))
126 (setq prev-start start
131 (substring str prev-start match)
132 (cond (literal newtext)
138 (cond ((eq c ?\\) "\\")
143 ((and (>= c ?0) (<= c ?9))
144 (if (> c (+ ?0 (length
147 (error "Invalid match num: %c" c)
152 (t (char-to-string c))))
153 (if (eq c ?\\) (progn (setq special t) nil)
154 (char-to-string c))))
156 (concat rtn-str (substring str start))))
158 (provide 'liece-compat)
160 ;;; liece-compat.el ends here