1 ;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
2 ;; Copyright (C) 1995,96 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
28 (eval-when-compile (require 'cl))
30 (defvar gnus-mouse-2 [mouse-2])
32 (defalias 'gnus-make-overlay 'make-overlay)
33 (defalias 'gnus-overlay-put 'overlay-put)
34 (defalias 'gnus-move-overlay 'move-overlay)
35 (defalias 'gnus-overlay-end 'overlay-end)
36 (defalias 'gnus-extent-detached-p 'ignore)
37 (defalias 'gnus-group-remove-excess-properties 'ignore)
38 (defalias 'gnus-topic-remove-excess-properties 'ignore)
39 (defalias 'gnus-extent-start-open 'ignore)
43 (autoload 'gnus-xmas-define "gnus-xmas")
44 (autoload 'gnus-xmas-redefine "gnus-xmas"))
46 (or (fboundp 'mail-file-babyl-p)
47 (fset 'mail-file-babyl-p 'rmail-file-p))
51 (defun gnus-mule-truncate-string (str width)
52 (let ((w (string-width str))
53 (col 0) (idx 0) (p-idx 0) chr)
57 (setq chr (aref str idx)
58 col (+ col (char-width chr))
60 idx (+ idx (char-bytes chr))
62 (substring str 0 (if (= col width)
66 (defun gnus-mule-cite-add-face (number prefix face)
67 ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line.
69 (let ((inhibit-point-motion-hooks t)
73 (forward-char (chars-in-string prefix))
74 (forward-char (length prefix)))
75 (skip-chars-forward " \t")
78 (skip-chars-backward " \t")
81 (gnus-overlay-put (gnus-make-overlay from to) 'face face)))))
83 (defun gnus-mule-max-width-function (el max-width)
84 (` (let* ((val (eval (, el)))
85 (valstr (if (numberp val)
86 (int-to-string val) val)))
87 (if (> (length valstr) (, max-width))
88 (truncate-string valstr (, max-width))
93 (if (string-match "XEmacs\\|Lucid" emacs-version)
96 (defvar gnus-mouse-face-prop 'mouse-face
97 "Property used for highlighting mouse regions.")
99 ;; Added by Per Abrahamsen <amanda@iesd.auc.dk>.
100 (defvar gnus-display-type
102 (let ((display-resource (x-get-resource ".displayType" "DisplayType")))
103 (cond (display-resource (intern (downcase display-resource)))
104 ((x-display-color-p) 'color)
105 ((x-display-grayscale-p) 'grayscale)
108 "A symbol indicating the display Emacs is running under.
109 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
110 guesses this display attribute wrongly, either set this variable in
111 your `~/.emacs' or set the resource `Emacs.displayType' in your
112 `~/.Xdefaults'. See also `gnus-background-mode'.
114 This is a meta-variable that will affect what default values other
115 variables get. You would normally not change this variable, but
116 pounce directly on the real variables themselves.")
118 (defvar gnus-background-mode
120 (let ((bg-resource (x-get-resource ".backgroundMode"
122 (params (frame-parameters)))
123 (cond (bg-resource (intern (downcase bg-resource)))
124 ((and (cdr (assq 'background-color params))
125 (< (apply '+ (x-color-values
126 (cdr (assq 'background-color params))))
127 (/ (apply '+ (x-color-values "white")) 3)))
131 "A symbol indicating the Emacs background brightness.
132 The symbol should be one of `light' or `dark'.
133 If Emacs guesses this frame attribute wrongly, either set this variable in
134 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
136 See also `gnus-display-type'.
138 This is a meta-variable that will affect what default values other
139 variables get. You would normally not change this variable, but
140 pounce directly on the real variables themselves."))
143 ((string-match "XEmacs\\|Lucid" emacs-version)
146 ((or (not (boundp 'emacs-minor-version))
147 (< emacs-minor-version 30))
148 ;; Remove the `intangible' prop.
149 (let ((props (and (boundp 'gnus-hidden-properties)
150 gnus-hidden-properties)))
151 (while (and props (not (eq (car (cdr props)) 'intangible)))
152 (setq props (cdr props)))
153 (and props (setcdr props (cdr (cdr (cdr props))))))
154 (or (fboundp 'buffer-substring-no-properties)
155 (defun buffer-substring-no-properties (beg end)
156 (format "%s" (buffer-substring beg end)))))
159 (provide 'gnusutil))))
164 (defun gnus-dummy-func (&rest args))
165 (let ((funcs '(mouse-set-point set-face-foreground
166 set-face-background x-popup-menu)))
168 (or (fboundp (car funcs))
169 (fset (car funcs) 'gnus-dummy-func))
170 (setq funcs (cdr funcs))))))
171 (or (fboundp 'file-regular-p)
172 (defun file-regular-p (file)
173 (and (not (file-directory-p file))
174 (not (file-symlink-p file))
175 (file-exists-p file))))
176 (or (fboundp 'face-list)
177 (defun face-list (&rest args))))
180 (let ((case-fold-search t))
182 ((string-match "windows-nt\\|os/2" (format "%s" system-type))
183 (setq nnheader-file-name-translation-alist
184 (append nnheader-file-name-translation-alist
188 (defvar gnus-tmp-unread)
189 (defvar gnus-tmp-replied)
190 (defvar gnus-tmp-score-char)
191 (defvar gnus-tmp-indentation)
192 (defvar gnus-tmp-opening-bracket)
193 (defvar gnus-tmp-lines)
194 (defvar gnus-tmp-name)
195 (defvar gnus-tmp-closing-bracket)
196 (defvar gnus-tmp-subject-or-nil)
198 (defun gnus-ems-redefine ()
200 ((string-match "XEmacs\\|Lucid" emacs-version)
201 (gnus-xmas-redefine))
205 (or (fboundp 'truncate-string)
206 (fset 'truncate-string 'gnus-mule-truncate-string))
207 (defalias 'gnus-truncate-string 'truncate-string)
209 (fset 'gnus-summary-make-display-table (lambda () nil))
210 (fset 'gnus-cite-add-face 'gnus-mule-cite-add-face)
211 (fset 'gnus-max-width-function 'gnus-mule-max-width-function)
213 (if (boundp 'gnus-check-before-posting)
214 (setq gnus-check-before-posting
216 (delq 'control-chars gnus-check-before-posting))))
218 (defun gnus-summary-line-format-spec ()
219 (insert gnus-tmp-unread gnus-tmp-replied
220 gnus-tmp-score-char gnus-tmp-indentation)
225 gnus-tmp-opening-bracket
228 (if (> (length gnus-tmp-name) 20)
229 (gnus-truncate-string gnus-tmp-name 20)
231 gnus-tmp-closing-bracket)
233 gnus-mouse-face-prop gnus-mouse-face)
234 (insert " " gnus-tmp-subject-or-nil "\n"))
241 ;; byte-compile-warnings: '(redefine callargs)
244 ;;; gnus-ems.el ends here