1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
|
;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
;; Copyright (C) 1995-2014 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; This file is part of GNU Emacs.
;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(eval-when-compile
(require 'cl)
(require 'ring))
;;; Function aliases later to be redefined for XEmacs usage.
(defvar gnus-mouse-2 [mouse-2])
(defvar gnus-down-mouse-3 [down-mouse-3])
(defvar gnus-down-mouse-2 [down-mouse-2])
(defvar gnus-widget-button-keymap nil)
(defvar gnus-mode-line-modified
(if (featurep 'xemacs)
'("--**-" . "-----")
'("**" "--")))
(eval-and-compile
(autoload 'gnus-xmas-define "gnus-xmas")
(autoload 'gnus-xmas-redefine "gnus-xmas"))
(autoload 'gnus-get-buffer-create "gnus")
(autoload 'nnheader-find-etc-directory "nnheader")
(autoload 'smiley-region "smiley")
(defun gnus-kill-all-overlays ()
"Delete all overlays in the current buffer."
(let* ((overlayss (overlay-lists))
(buffer-read-only nil)
(overlays (delq nil (nconc (car overlayss) (cdr overlayss)))))
(while overlays
(delete-overlay (pop overlays)))))
;;; Mule functions.
(defun gnus-mule-max-width-function (el max-width)
`(let* ((val (eval (, el)))
(valstr (if (numberp val)
(int-to-string val) val)))
(if (> (length valstr) ,max-width)
(truncate-string-to-width valstr ,max-width)
valstr)))
(eval-and-compile
(if (featurep 'xemacs)
(gnus-xmas-define)
(defvar gnus-mouse-face-prop 'mouse-face
"Property used for highlighting mouse regions.")))
(defvar gnus-tmp-unread)
(defvar gnus-tmp-replied)
(defvar gnus-tmp-score-char)
(defvar gnus-tmp-indentation)
(defvar gnus-tmp-opening-bracket)
(defvar gnus-tmp-lines)
(defvar gnus-tmp-name)
(defvar gnus-tmp-closing-bracket)
(defvar gnus-tmp-subject-or-nil)
(defvar gnus-check-before-posting)
(defvar gnus-mouse-face)
(defvar gnus-group-buffer)
(defun gnus-ems-redefine ()
(cond
((featurep 'xemacs)
(gnus-xmas-redefine))
((featurep 'mule)
;; Mule and new Emacs definitions
;; [Note] Now there are three kinds of mule implementations,
;; original MULE, XEmacs/mule and Emacs 20+ including
;; MULE features. Unfortunately these APIs are different. In
;; particular, Emacs (including original Mule) and XEmacs are
;; quite different. However, this version of Gnus doesn't support
;; anything other than XEmacs 20+ and Emacs 20.3+.
;; Predicates to check are following:
;; (boundp 'MULE) is t only if Mule (original; anything older than
;; Mule 2.3) is running.
;; (featurep 'mule) is t when other mule variants are running.
;; It is possible to detect XEmacs/mule by (featurep 'mule) and
;; (featurep 'xemacs). In this case, the implementation for
;; XEmacs/mule may be shareable between XEmacs and XEmacs/mule.
(defvar gnus-summary-display-table nil
"Display table used in summary mode buffers.")
(defalias 'gnus-max-width-function 'gnus-mule-max-width-function)
(when (boundp 'gnus-check-before-posting)
(setq gnus-check-before-posting
(delq 'long-lines
(delq 'control-chars gnus-check-before-posting))))
(defun gnus-summary-line-format-spec ()
(insert gnus-tmp-unread gnus-tmp-replied
gnus-tmp-score-char gnus-tmp-indentation)
(put-text-property
(point)
(progn
(insert
gnus-tmp-opening-bracket
(format "%4d: %-20s"
gnus-tmp-lines
(if (> (length gnus-tmp-name) 20)
(truncate-string-to-width gnus-tmp-name 20)
gnus-tmp-name))
gnus-tmp-closing-bracket)
(point))
gnus-mouse-face-prop gnus-mouse-face)
(insert " " gnus-tmp-subject-or-nil "\n")))))
;; Clone of `appt-select-lowest-window' in appt.el.
(defun gnus-select-lowest-window ()
"Select the lowest window on the frame."
(let ((lowest-window (selected-window))
(bottom-edge (nth 3 (window-edges))))
(walk-windows (lambda (w)
(let ((next-bottom-edge (nth 3 (window-edges w))))
(when (< bottom-edge next-bottom-edge)
(setq bottom-edge next-bottom-edge
lowest-window w)))))
(select-window lowest-window)))
(defun gnus-region-active-p ()
"Say whether the region is active."
(and (boundp 'transient-mark-mode)
transient-mark-mode
(boundp 'mark-active)
mark-active))
(defun gnus-mark-active-p ()
"Non-nil means the mark and region are currently active in this buffer."
mark-active) ; aliased to region-exists-p in XEmacs.
(autoload 'gnus-alive-p "gnus-util")
(autoload 'mm-disable-multibyte "mm-util")
;;; Image functions.
(defun gnus-image-type-available-p (type)
(and (fboundp 'image-type-available-p)
(if (fboundp 'display-images-p)
(display-images-p)
t)
(image-type-available-p type)))
(defun gnus-create-image (file &optional type data-p &rest props)
(let ((face (plist-get props :face)))
(when face
(setq props (plist-put props :foreground (face-foreground face)))
(setq props (plist-put props :background (face-background face))))
(ignore-errors
(apply 'create-image file type data-p props))))
(defun gnus-put-image (glyph &optional string category)
(let ((point (point)))
(insert-image glyph (or string " "))
(put-text-property point (point) 'gnus-image-category category)
(unless string
(put-text-property (1- (point)) (point)
'gnus-image-text-deletable t))
glyph))
(defun gnus-remove-image (image &optional category)
"Remove the image matching IMAGE and CATEGORY found first."
(let ((start (point-min))
val end)
(while (and (not end)
(or (setq val (get-text-property start 'display))
(and (setq start
(next-single-property-change start 'display))
(setq val (get-text-property start 'display)))))
(setq end (or (next-single-property-change start 'display)
(point-max)))
(if (and (equal val image)
(equal (get-text-property start 'gnus-image-category)
category))
(progn
(put-text-property start end 'display nil)
(when (get-text-property start 'gnus-image-text-deletable)
(delete-region start end)))
(unless (= end (point-max))
(setq start end
end nil))))))
(defmacro gnus-string-mark-left-to-right (string)
(if (fboundp 'bidi-string-mark-left-to-right)
`(bidi-string-mark-left-to-right ,string)
string))
(eval-and-compile
;; XEmacs does not have window-inside-pixel-edges
(defalias 'gnus-window-inside-pixel-edges
(if (fboundp 'window-inside-pixel-edges)
'window-inside-pixel-edges
'window-pixel-edges))
(if (or (featurep 'emacs) (fboundp 'set-process-plist))
(progn ; these exist since Emacs 22.1
(defalias 'gnus-set-process-plist 'set-process-plist)
(defalias 'gnus-process-plist 'process-plist)
(defalias 'gnus-process-get 'process-get)
(defalias 'gnus-process-put 'process-put))
(defun gnus-set-process-plist (process plist)
"Replace the plist of PROCESS with PLIST. Returns PLIST."
(put 'gnus-process-plist-internal process plist))
(defun gnus-process-plist (process)
"Return the plist of PROCESS."
;; This form works but can't prevent the plist data from
;; growing infinitely.
;;(get 'gnus-process-plist-internal process)
(let* ((plist (symbol-plist 'gnus-process-plist-internal))
(tem (memq process plist)))
(prog1
(cadr tem)
;; Remove it from the plist data.
(when tem
(if (eq plist tem)
(progn
(setcar plist (caddr plist))
(setcdr plist (or (cdddr plist) '(nil))))
(setcdr (nthcdr (- (length plist) (length tem) 1) plist)
(cddr tem)))))))
(defun gnus-process-get (process propname)
"Return the value of PROCESS' PROPNAME property.
This is the last value stored with `(gnus-process-put PROCESS PROPNAME VALUE)'."
(plist-get (gnus-process-plist process) propname))
(defun gnus-process-put (process propname value)
"Change PROCESS' PROPNAME property to VALUE.
It can be retrieved with `(gnus-process-get PROCESS PROPNAME)'."
(gnus-set-process-plist process
(plist-put (gnus-process-plist process)
propname value)))))
(provide 'gnus-ems)
;;; gnus-ems.el ends here
|
