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1 ;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
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2 ;; Copyright (C) 1995,96,97 Free Software Foundation, Inc.
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3
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4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
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5 ;; Keywords: news
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6
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7 ;; This file is part of GNU Emacs.
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8
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9 ;; GNU Emacs is free software; you can redistribute it and/or modify
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10 ;; it under the terms of the GNU General Public License as published by
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11 ;; the Free Software Foundation; either version 2, or (at your option)
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12 ;; any later version.
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13
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14 ;; GNU Emacs is distributed in the hope that it will be useful,
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15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 ;; GNU General Public License for more details.
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18
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19 ;; You should have received a copy of the GNU General Public License
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20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 ;; Boston, MA 02111-1307, USA.
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23
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24 ;;; Commentary:
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25
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26 ;;; Code:
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27
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28 (eval-when-compile (require 'cl))
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29
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30 ;;; Function aliases later to be redefined for XEmacs usage.
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31
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32 (defvar gnus-xemacs (string-match "XEmacs\\|Lucid" emacs-version)
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33 "Non-nil if running under XEmacs.")
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34
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35 (defvar gnus-mouse-2 [mouse-2])
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36 (defvar gnus-down-mouse-2 [down-mouse-2])
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173
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37 (defvar gnus-mode-line-modified
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175
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38 (if (or gnus-xemacs
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39 (< emacs-major-version 20))
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173
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40 '("--**-" . "-----")
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41 '("**" "--")))
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42
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43 (eval-and-compile
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44 (autoload 'gnus-xmas-define "gnus-xmas")
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45 (autoload 'gnus-xmas-redefine "gnus-xmas")
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136
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46 (autoload 'appt-select-lowest-window "appt"))
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47
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48 (or (fboundp 'mail-file-babyl-p)
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49 (fset 'mail-file-babyl-p 'rmail-file-p))
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50
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51 ;;; Mule functions.
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52
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53 (defun gnus-mule-cite-add-face (number prefix face)
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54 ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line.
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55 (when face
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56 (let ((inhibit-point-motion-hooks t)
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57 from to)
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58 (goto-line number)
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59 (if (boundp 'MULE)
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60 (forward-char (chars-in-string prefix))
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61 (forward-char (length prefix)))
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62 (skip-chars-forward " \t")
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63 (setq from (point))
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64 (end-of-line 1)
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65 (skip-chars-backward " \t")
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66 (setq to (point))
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67 (when (< from to)
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68 (gnus-overlay-put (gnus-make-overlay from to) 'face face)))))
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69
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70 (defun gnus-mule-max-width-function (el max-width)
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71 (` (let* ((val (eval (, el)))
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72 (valstr (if (numberp val)
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73 (int-to-string val) val)))
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74 (if (> (length valstr) (, max-width))
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75 (truncate-string valstr (, max-width))
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76 valstr))))
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77
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78 (eval-and-compile
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79 (if (string-match "XEmacs\\|Lucid" emacs-version)
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80 nil
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81
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82 (defvar gnus-mouse-face-prop 'mouse-face
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83 "Property used for highlighting mouse regions."))
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84
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85 (cond
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86 ((string-match "XEmacs\\|Lucid" emacs-version)
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87 (gnus-xmas-define))
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88
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89 ((or (not (boundp 'emacs-minor-version))
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90 (< emacs-minor-version 30))
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91 ;; Remove the `intangible' prop.
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92 (let ((props (and (boundp 'gnus-hidden-properties)
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93 gnus-hidden-properties)))
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94 (while (and props (not (eq (car (cdr props)) 'intangible)))
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95 (setq props (cdr props)))
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98
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96 (when props
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97 (setcdr props (cdr (cdr (cdr props))))))
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98 (unless (fboundp 'buffer-substring-no-properties)
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99 (defun buffer-substring-no-properties (beg end)
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100 (format "%s" (buffer-substring beg end)))))
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108
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101
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102 ((boundp 'MULE)
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103 (provide 'gnusutil))))
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104
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105 (eval-and-compile
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106 (cond
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107 ((not window-system)
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108 (defun gnus-dummy-func (&rest args))
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109 (let ((funcs '(mouse-set-point set-face-foreground
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110 set-face-background x-popup-menu)))
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111 (while funcs
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112 (unless (fboundp (car funcs))
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113 (fset (car funcs) 'gnus-dummy-func))
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114 (setq funcs (cdr funcs))))))
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115 (unless (fboundp 'file-regular-p)
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116 (defun file-regular-p (file)
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117 (and (not (file-directory-p file))
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118 (not (file-symlink-p file))
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119 (file-exists-p file))))
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120 (unless (fboundp 'face-list)
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121 (defun face-list (&rest args))))
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122
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123 (eval-and-compile
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124 (let ((case-fold-search t))
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125 (cond
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126 ((string-match "windows-nt\\|os/2\\|emx" (format "%s" system-type))
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127 (setq nnheader-file-name-translation-alist
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128 (append nnheader-file-name-translation-alist
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129 '((?: . ?_)
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130 (?+ . ?-))))))))
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131
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132 (defvar gnus-tmp-unread)
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133 (defvar gnus-tmp-replied)
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134 (defvar gnus-tmp-score-char)
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135 (defvar gnus-tmp-indentation)
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136 (defvar gnus-tmp-opening-bracket)
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137 (defvar gnus-tmp-lines)
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138 (defvar gnus-tmp-name)
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139 (defvar gnus-tmp-closing-bracket)
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140 (defvar gnus-tmp-subject-or-nil)
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141
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142 (defun gnus-ems-redefine ()
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143 (cond
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144 ((string-match "XEmacs\\|Lucid" emacs-version)
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145 (gnus-xmas-redefine))
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146
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147 ((featurep 'mule)
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148 ;; Mule and new Emacs definitions
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149
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150 ;; [Note] Now there are three kinds of mule implementations,
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151 ;; original MULE, XEmacs/mule and beta version of Emacs including
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152 ;; some mule features. Unfortunately these API are different. In
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153 ;; particular, Emacs (including original MULE) and XEmacs are
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154 ;; quite different.
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155 ;; Predicates to check are following:
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156 ;; (boundp 'MULE) is t only if MULE (original; anything older than
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157 ;; Mule 2.3) is running.
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158 ;; (featurep 'mule) is t when every mule variants are running.
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159
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160 ;; These implementations may be able to share between original
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161 ;; MULE and beta version of new Emacs. In addition, it is able to
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162 ;; detect XEmacs/mule by (featurep 'mule) and to check variable
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163 ;; `emacs-version'. In this case, implementation for XEmacs/mule
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164 ;; may be able to share between XEmacs and XEmacs/mule.
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165
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166 (defalias 'gnus-truncate-string 'truncate-string)
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167
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168 (defvar gnus-summary-display-table nil
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169 "Display table used in summary mode buffers.")
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170 (fset 'gnus-cite-add-face 'gnus-mule-cite-add-face)
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171 (fset 'gnus-max-width-function 'gnus-mule-max-width-function)
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172 (fset 'gnus-summary-set-display-table 'ignore)
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173
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174 (when (boundp 'gnus-check-before-posting)
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175 (setq gnus-check-before-posting
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176 (delq 'long-lines
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177 (delq 'control-chars gnus-check-before-posting))))
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178
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179 (defun gnus-summary-line-format-spec ()
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180 (insert gnus-tmp-unread gnus-tmp-replied
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181 gnus-tmp-score-char gnus-tmp-indentation)
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182 (put-text-property
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183 (point)
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184 (progn
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185 (insert
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186 gnus-tmp-opening-bracket
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187 (format "%4d: %-20s"
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188 gnus-tmp-lines
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189 (if (> (length gnus-tmp-name) 20)
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190 (truncate-string gnus-tmp-name 20)
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191 gnus-tmp-name))
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192 gnus-tmp-closing-bracket)
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193 (point))
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194 gnus-mouse-face-prop gnus-mouse-face)
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195 (insert " " gnus-tmp-subject-or-nil "\n"))
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196 )))
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197
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198 (defun gnus-region-active-p ()
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199 "Say whether the region is active."
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200 (and (boundp 'transient-mark-mode)
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201 transient-mark-mode
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202 (boundp 'mark-active)
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203 mark-active))
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204
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205 (defun gnus-add-minor-mode (mode name map)
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206 (if (fboundp 'add-minor-mode)
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207 (add-minor-mode mode name map)
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208 (unless (assq mode minor-mode-alist)
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209 (push `(,mode ,name) minor-mode-alist))
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210 (unless (assq mode minor-mode-map-alist)
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211 (push (cons mode map)
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212 minor-mode-map-alist))))
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213
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214 (provide 'gnus-ems)
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215
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216 ;; Local Variables:
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217 ;; byte-compile-warnings: '(redefine callargs)
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218 ;; End:
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219
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220 ;;; gnus-ems.el ends here
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