1 ;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
2 ;; Copyright (C) 1995 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
21 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
27 (defvar gnus-mouse-2 [mouse-2])
29 (defalias 'gnus-make-overlay 'make-overlay)
30 (defalias 'gnus-overlay-put 'overlay-put)
31 (defalias 'gnus-move-overlay 'move-overlay)
34 (autoload 'gnus-xmas-define "gnus-xmas")
35 (autoload 'gnus-xmas-redefine "gnus-xmas"))
39 (defun gnus-mule-truncate-string (str width)
40 (let ((w (string-width str))
41 (col 0) (idx 0) (p-idx 0) chr)
45 (setq chr (aref str idx)
46 col (+ col (char-width chr))
48 idx (+ idx (char-bytes chr))
50 (substring str 0 (if (= col width)
54 (defun gnus-mule-cite-add-face (number prefix face)
55 ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line.
57 (let ((inhibit-point-motion-hooks t)
61 (forward-char (chars-in-string prefix))
62 (forward-char (length prefix)))
63 (skip-chars-forward " \t")
66 (skip-chars-backward " \t")
69 (gnus-overlay-put (gnus-make-overlay from to) 'face face)))))
71 (defun gnus-mule-max-width-function (el max-width)
72 (` (let* ((val (eval (, el)))
73 (valstr (if (numberp val)
74 (int-to-string val) val)))
75 (if (> (length valstr) (, max-width))
76 (truncate-string valstr (, max-width))
82 (if (string-match "XEmacs\\|Lucid" emacs-version)
84 ;; Added by Per Abrahamsen <amanda@iesd.auc.dk>.
85 (defvar gnus-display-type
87 (let ((display-resource (x-get-resource ".displayType" "DisplayType")))
88 (cond (display-resource (intern (downcase display-resource)))
89 ((x-display-color-p) 'color)
90 ((x-display-grayscale-p) 'grayscale)
93 "A symbol indicating the display Emacs is running under.
94 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
95 guesses this display attribute wrongly, either set this variable in
96 your `~/.emacs' or set the resource `Emacs.displayType' in your
97 `~/.Xdefaults'. See also `gnus-background-mode'.
99 This is a meta-variable that will affect what default values other
100 variables get. You would normally not change this variable, but
101 pounce directly on the real variables themselves.")
103 (defvar gnus-background-mode
105 (let ((bg-resource (x-get-resource ".backgroundMode"
107 (params (frame-parameters)))
108 (cond (bg-resource (intern (downcase bg-resource)))
109 ((and (cdr (assq 'background-color params))
110 (< (apply '+ (x-color-values
111 (cdr (assq 'background-color params))))
112 (/ (apply '+ (x-color-values "white")) 3)))
116 "A symbol indicating the Emacs background brightness.
117 The symbol should be one of `light' or `dark'.
118 If Emacs guesses this frame attribute wrongly, either set this variable in
119 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
121 See also `gnus-display-type'.
123 This is a meta-variable that will affect what default values other
124 variables get. You would normally not change this variable, but
125 pounce directly on the real variables themselves."))
128 ((string-match "XEmacs\\|Lucid" emacs-version)
131 ((and (not (string-match "28.9" emacs-version))
132 (not (string-match "29" emacs-version)))
133 ;; Remove the `intangible' prop.
134 (let ((props (and (boundp 'gnus-hidden-properties)
135 gnus-hidden-properties)))
136 (while (and props (not (eq (car (cdr props)) 'intangible)))
137 (setq props (cdr props)))
138 (and props (setcdr props (cdr (cdr (cdr props))))))
139 (or (fboundp 'buffer-substring-no-properties)
140 (defun buffer-substring-no-properties (beg end)
141 (format "%s" (buffer-substring beg end)))))
150 (defun gnus-dummy-func (&rest args))
151 (let ((funcs '(mouse-set-point set-face-foreground
152 set-face-background x-popup-menu)))
154 (or (fboundp (car funcs))
155 (fset (car funcs) 'gnus-dummy-func))
156 (setq funcs (cdr funcs))))))
157 (or (fboundp 'file-regular-p)
158 (defun file-regular-p (file)
159 (and (not (file-directory-p file))
160 (not (file-symlink-p file))
161 (file-exists-p file))))
162 (or (fboundp 'face-list)
163 (defun face-list (&rest args)))
166 (defun gnus-ems-redefine ()
168 ((string-match "XEmacs\\|Lucid" emacs-version)
169 (gnus-xmas-redefine))
173 (or (fboundp 'truncate-string)
174 (fset 'truncate-string 'gnus-mule-truncate-string))
175 (defalias 'gnus-truncate-string 'truncate-string)
177 (fset 'gnus-summary-make-display-table (lambda () nil))
178 (fset 'gnus-cite-add-face 'gnus-mule-cite-add-face)
179 (fset 'gnus-max-width-function 'gnus-mule-max-width-function)
181 (if (boundp 'gnus-check-before-posting)
182 (setq gnus-check-before-posting
184 (delq 'control-chars gnus-check-before-posting))))
191 ;; byte-compile-warnings: '(redefine callargs)
194 ;;; gnus-ems.el ends here