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a0d14345 | 1 | ;;; w32-fns.el --- Lisp routines for Windows NT. |
b578f267 | 2 | |
95ed0025 RS |
3 | ;; Copyright (C) 1994 Free Software Foundation, Inc. |
4 | ||
68429d86 | 5 | ;; Author: Geoff Voelker <voelker@cs.washington.edu> |
95ed0025 RS |
6 | |
7 | ;; This file is part of GNU Emacs. | |
8 | ||
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) | |
12 | ;; any later version. | |
13 | ||
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. | |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
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. | |
95ed0025 RS |
23 | |
24 | ;;; Commentary: | |
25 | ||
26 | ;; (August 12, 1993) | |
81b38822 | 27 | ;; Created. |
95ed0025 | 28 | |
81b38822 KH |
29 | ;; (November 21, 1994) |
30 | ;; [C-M-backspace] defined. | |
31 | ;; mode-line-format defined to show buffer file type. | |
32 | ;; audio bell initialized. | |
95ed0025 RS |
33 | |
34 | ;;; Code: | |
35 | ||
36 | ;; Map delete and backspace | |
37 | (define-key function-key-map [backspace] "\177") | |
38 | (define-key function-key-map [delete] "\C-d") | |
39 | (define-key function-key-map [M-backspace] [?\M-\177]) | |
81b38822 KH |
40 | (define-key function-key-map [C-M-backspace] [\C-\M-delete]) |
41 | ||
95ed0025 RS |
42 | ;; Ignore case on file-name completion |
43 | (setq completion-ignore-case t) | |
44 | ||
d234707d GV |
45 | ;; Map all versions of a filename (8.3, longname, mixed case) to the |
46 | ;; same buffer. | |
47 | (setq find-file-visit-truename t) | |
48 | ||
161ab819 AI |
49 | (defun w32-version () |
50 | "Return the MS-Windows version numbers. | |
51 | The value is a list of three integers: the major and minor version | |
52 | numbers, and the build number." | |
53 | (x-server-version)) | |
54 | ||
85f568ec GV |
55 | (defvar w32-system-shells '("cmd" "cmd.exe" "command" "command.com" |
56 | "4nt" "4nt.exe" "4dos" "4dos.exe" | |
57 | "ndos" "ndos.exe") | |
d234707d | 58 | "List of strings recognized as Windows NT/9X system shells.") |
ee82af56 GV |
59 | |
60 | (defun w32-using-nt () | |
9be978ba | 61 | "Return non-nil if literally running on Windows NT (i.e., not Windows 9X)." |
ee82af56 GV |
62 | (and (eq system-type 'windows-nt) (getenv "SystemRoot"))) |
63 | ||
64 | (defun w32-shell-name () | |
d234707d | 65 | "Return the name of the shell being used." |
ee82af56 GV |
66 | (or (and (boundp 'explicit-shell-file-name) explicit-shell-file-name) |
67 | (getenv "ESHELL") | |
68 | (getenv "SHELL") | |
69 | (and (w32-using-nt) "cmd.exe") | |
70 | "command.com")) | |
71 | ||
d234707d GV |
72 | (defun w32-system-shell-p (shell-name) |
73 | (and shell-name | |
74 | (member (downcase (file-name-nondirectory shell-name)) | |
75 | w32-system-shells))) | |
ee82af56 | 76 | |
f3e62da2 GV |
77 | (defun w32-shell-dos-semantics () |
78 | "Return t if the interactive shell being used expects msdos shell semantics." | |
79 | (or (w32-system-shell-p (w32-shell-name)) | |
80 | (and (member (downcase (file-name-nondirectory (w32-shell-name))) | |
81 | '("cmdproxy" "cmdproxy.exe")) | |
82 | (w32-system-shell-p (getenv "COMSPEC"))))) | |
83 | ||
85f568ec GV |
84 | (defvar w32-allow-system-shell nil |
85 | "*Disable startup warning when using \"system\" shells.") | |
86 | ||
d234707d GV |
87 | (defun w32-check-shell-configuration () |
88 | "Check the configuration of shell variables on Windows NT/9X. | |
ee82af56 | 89 | This function is invoked after loading the init files and processing |
d234707d GV |
90 | the command line arguments. It issues a warning if the user or site |
91 | has configured the shell with inappropriate settings." | |
85f568ec | 92 | (interactive) |
d234707d GV |
93 | (let ((prev-buffer (current-buffer)) |
94 | (buffer (get-buffer-create "*Shell Configuration*")) | |
95 | (system-shell)) | |
96 | (set-buffer buffer) | |
97 | (erase-buffer) | |
98 | (if (w32-system-shell-p (getenv "ESHELL")) | |
99 | (insert (format "Warning! The ESHELL environment variable uses %s. | |
100 | You probably want to change it so that it uses cmdproxy.exe instead.\n\n" | |
101 | (getenv "ESHELL")))) | |
102 | (if (w32-system-shell-p (getenv "SHELL")) | |
103 | (insert (format "Warning! The SHELL environment variable uses %s. | |
104 | You probably want to change it so that it uses cmdproxy.exe instead.\n\n" | |
105 | (getenv "SHELL")))) | |
106 | (if (w32-system-shell-p shell-file-name) | |
107 | (insert (format "Warning! shell-file-name uses %s. | |
108 | You probably want to change it so that it uses cmdproxy.exe instead.\n\n" | |
109 | shell-file-name))) | |
110 | (if (and (boundp 'explicit-shell-file-name) | |
111 | (w32-system-shell-p explicit-shell-file-name)) | |
112 | (insert (format "Warning! explicit-shell-file-name uses %s. | |
113 | You probably want to change it so that it uses cmdproxy.exe instead.\n\n" | |
114 | explicit-shell-file-name))) | |
115 | (setq system-shell (> (buffer-size) 0)) | |
85f568ec GV |
116 | |
117 | ;; Allow user to specify that they really do want to use one of the | |
118 | ;; "system" shells, despite the drawbacks, but still warn if | |
119 | ;; shell-command-switch doesn't match. | |
120 | (if w32-allow-system-shell | |
121 | (erase-buffer)) | |
122 | ||
d234707d GV |
123 | (cond (system-shell |
124 | ;; System shells. | |
125 | (if (string-equal "-c" shell-command-switch) | |
126 | (insert "Warning! shell-command-switch is \"-c\". | |
127 | You should set this to \"/c\" when using a system shell.\n\n")) | |
128 | (if w32-quote-process-args | |
129 | (insert "Warning! w32-quote-process-args is t. | |
130 | You should set this to nil when using a system shell.\n\n"))) | |
131 | ;; Non-system shells. | |
132 | (t | |
133 | (if (string-equal "/c" shell-command-switch) | |
134 | (insert "Warning! shell-command-switch is \"/c\". | |
135 | You should set this to \"-c\" when using a non-system shell.\n\n")) | |
136 | (if (not w32-quote-process-args) | |
137 | (insert "Warning! w32-quote-process-args is nil. | |
138 | You should set this to t when using a non-system shell.\n\n")))) | |
139 | (if (> (buffer-size) 0) | |
140 | (display-buffer buffer) | |
141 | (kill-buffer buffer)) | |
142 | (set-buffer prev-buffer))) | |
143 | ||
144 | (add-hook 'after-init-hook 'w32-check-shell-configuration) | |
145 | ||
b1ed8648 AI |
146 | ;;; Override setting chosen at startup. |
147 | (defun set-default-process-coding-system () | |
148 | ;; Most programs on Windows will accept Unix line endings on input | |
149 | ;; (and some programs ported from Unix require it) but most will | |
150 | ;; produce DOS line endings on output. | |
151 | (setq default-process-coding-system | |
152 | (if default-enable-multibyte-characters | |
153 | '(undecided-dos . undecided-unix) | |
154 | '(raw-text-dos . raw-text-unix))) | |
155 | (or (w32-using-nt) | |
156 | ;; On Windows 9x, make cmdproxy default to using DOS line endings | |
157 | ;; for input, because command.com requires this. | |
158 | (setq process-coding-system-alist | |
159 | `(("[cC][mM][dD][pP][rR][oO][xX][yY]" | |
160 | . ,(if default-enable-multibyte-characters | |
161 | '(undecided-dos . undecided-dos) | |
162 | '(raw-text-dos . raw-text-dos))))))) | |
163 | ||
164 | (add-hook 'before-init-hook 'set-default-process-coding-system) | |
165 | ||
85f568ec GV |
166 | |
167 | ;;; Basic support functions for managing Emacs' locale setting | |
168 | ||
169 | (defvar w32-valid-locales nil | |
170 | "List of locale ids known to be supported.") | |
171 | ||
172 | ;;; This is the brute-force version; an efficient version is now | |
173 | ;;; built-in though. | |
174 | (if (not (fboundp 'w32-get-valid-locale-ids)) | |
175 | (defun w32-get-valid-locale-ids () | |
176 | "Return list of all valid Windows locale ids." | |
177 | (let ((i 65535) | |
178 | locales) | |
179 | (while (> i 0) | |
180 | (if (w32-get-locale-info i) | |
181 | (setq locales (cons i locales))) | |
182 | (setq i (1- i))) | |
183 | locales))) | |
184 | ||
185 | (defun w32-list-locales () | |
186 | "List the name and id of all locales supported by Windows." | |
187 | (interactive) | |
188 | (if (null w32-valid-locales) | |
189 | (setq w32-valid-locales (w32-get-valid-locale-ids))) | |
190 | (switch-to-buffer-other-window (get-buffer-create "*Supported Locales*")) | |
191 | (erase-buffer) | |
192 | (insert "LCID\tAbbrev\tFull name\n\n") | |
193 | (insert (mapconcat | |
194 | '(lambda (x) | |
195 | (format "%d\t%s\t%s" | |
196 | x | |
197 | (w32-get-locale-info x) | |
198 | (w32-get-locale-info x t))) | |
199 | w32-valid-locales "\n")) | |
200 | (insert "\n") | |
201 | (goto-char (point-min))) | |
202 | ||
203 | ||
d234707d GV |
204 | ;;; Setup Info-default-directory-list to include the info directory |
205 | ;;; near where Emacs executable was installed. We used to set INFOPATH, | |
206 | ;;; but when this is set Info-default-directory-list is ignored. We | |
207 | ;;; also cannot rely upon what is set in paths.el because they assume | |
208 | ;;; that configuration during build time is correct for runtime. | |
209 | (defun w32-init-info () | |
210 | (let* ((instdir (file-name-directory invocation-directory)) | |
85f568ec | 211 | (dir1 (expand-file-name "../info/" instdir)) |
d234707d GV |
212 | (dir2 (expand-file-name "../../../info/" instdir))) |
213 | (if (file-exists-p dir1) | |
214 | (setq Info-default-directory-list | |
215 | (append Info-default-directory-list (list dir1))) | |
216 | (if (file-exists-p dir2) | |
217 | (setq Info-default-directory-list | |
218 | (append Info-default-directory-list (list dir2))))))) | |
219 | ||
220 | (add-hook 'before-init-hook 'w32-init-info) | |
3eab6a03 | 221 | |
8929f478 GV |
222 | ;;; The variable source-directory is used to initialize Info-directory-list. |
223 | ;;; However, the common case is that Emacs is being used from a binary | |
224 | ;;; distribution, and the value of source-directory is meaningless in that | |
225 | ;;; case. Even worse, source-directory can refer to a directory on a drive | |
226 | ;;; on the build machine that happens to be a removable drive on the user's | |
227 | ;;; machine. When this happens, Emacs tries to access the removable drive | |
228 | ;;; and produces the abort/retry/ignore dialog. Since we do not use | |
229 | ;;; source-directory, set it to something that is a reasonable approximation | |
230 | ;;; on the user's machine. | |
231 | ||
1198514b AI |
232 | ;(add-hook 'before-init-hook |
233 | ; '(lambda () | |
234 | ; (setq source-directory (file-name-as-directory | |
235 | ; (expand-file-name ".." exec-directory))))) | |
8929f478 | 236 | |
926e2fdb | 237 | ;; Avoid creating auto-save file names containing invalid characters. |
4e0cd0df GV |
238 | (fset 'original-make-auto-save-file-name |
239 | (symbol-function 'make-auto-save-file-name)) | |
240 | ||
241 | (defun make-auto-save-file-name () | |
242 | "Return file name to use for auto-saves of current buffer. | |
243 | Does not consider `auto-save-visited-file-name' as that variable is checked | |
244 | before calling this function. You can redefine this for customization. | |
245 | See also `auto-save-file-name-p'." | |
022b8155 AI |
246 | (let ((filename (original-make-auto-save-file-name))) |
247 | ;; Don't modify remote (ange-ftp) filenames | |
248 | (if (string-match "^/\\w+@[-A-Za-z0-9._]+:" filename) | |
249 | filename | |
250 | (convert-standard-filename filename)))) | |
d234707d GV |
251 | |
252 | (defun convert-standard-filename (filename) | |
253 | "Convert a standard file's name to something suitable for the current OS. | |
254 | This function's standard definition is trivial; it just returns the argument. | |
255 | However, on some systems, the function is redefined | |
256 | with a definition that really does change some file names." | |
257 | (let ((name (copy-sequence filename)) | |
4e0cd0df | 258 | (start 0)) |
d234707d | 259 | ;; leave ':' if part of drive specifier |
82d5a7b2 AI |
260 | (if (and (> (length name) 1) |
261 | (eq (aref name 1) ?:)) | |
d234707d GV |
262 | (setq start 2)) |
263 | ;; destructively replace invalid filename characters with ! | |
264 | (while (string-match "[?*:<>|\"\000-\037]" name start) | |
265 | (aset name (match-beginning 0) ?!) | |
266 | (setq start (match-end 0))) | |
dd89ee95 | 267 | ;; convert directory separators to Windows format |
105adfb5 | 268 | ;; (but only if the shell in use requires it) |
5f47fb28 EZ |
269 | (when (w32-shell-dos-semantics) |
270 | (setq start 0) | |
271 | (while (string-match "/" name start) | |
272 | (aset name (match-beginning 0) ?\\) | |
273 | (setq start (match-end 0)))) | |
274 | name)) | |
4e0cd0df | 275 | |
95ed0025 | 276 | ;;; Fix interface to (X-specific) mouse.el |
bffcf874 RS |
277 | (defun x-set-selection (type data) |
278 | (or type (setq type 'PRIMARY)) | |
279 | (put 'x-selections type data)) | |
280 | ||
281 | (defun x-get-selection (&optional type data-type) | |
282 | (or type (setq type 'PRIMARY)) | |
283 | (get 'x-selections type)) | |
284 | ||
1b42a753 GV |
285 | (defun set-w32-system-coding-system (coding-system) |
286 | "Set the coding system used by the Windows System to CODING-SYSTEM. | |
287 | This is used for things like passing font names with non-ASCII | |
288 | characters in them to the system. For a list of possible values of | |
289 | CODING-SYSTEM, use \\[list-coding-systems]." | |
290 | (interactive | |
291 | (list (let ((default w32-system-coding-system)) | |
292 | (read-coding-system | |
293 | (format "Coding system for system calls (default, %s): " | |
294 | default) | |
295 | default)))) | |
296 | (check-coding-system coding-system) | |
297 | (setq w32-system-coding-system coding-system)) | |
298 | ;; Set system coding system initially to iso-latin-1 | |
299 | (set-w32-system-coding-system 'iso-latin-1) | |
300 | ||
81b38822 KH |
301 | ;;; Set to a system sound if you want a fancy bell. |
302 | (set-message-beep nil) | |
303 | ||
d234707d GV |
304 | ;;; The "Windows" keys on newer keyboards bring up the Start menu |
305 | ;;; whether you want it or not - make Emacs ignore these keystrokes | |
306 | ;;; rather than beep. | |
307 | (global-set-key [lwindow] 'ignore) | |
308 | (global-set-key [rwindow] 'ignore) | |
309 | ||
310 | ;; Map certain keypad keys into ASCII characters | |
311 | ;; that people usually expect. | |
312 | (define-key function-key-map [tab] [?\t]) | |
313 | (define-key function-key-map [linefeed] [?\n]) | |
314 | (define-key function-key-map [clear] [11]) | |
315 | (define-key function-key-map [return] [13]) | |
316 | (define-key function-key-map [escape] [?\e]) | |
317 | (define-key function-key-map [M-tab] [?\M-\t]) | |
318 | (define-key function-key-map [M-linefeed] [?\M-\n]) | |
319 | (define-key function-key-map [M-clear] [?\M-\013]) | |
320 | (define-key function-key-map [M-return] [?\M-\015]) | |
321 | (define-key function-key-map [M-escape] [?\M-\e]) | |
322 | ||
323 | ;; These don't do the right thing (voelker) | |
324 | ;(define-key function-key-map [backspace] [127]) | |
325 | ;(define-key function-key-map [delete] [127]) | |
326 | ;(define-key function-key-map [M-backspace] [?\M-\d]) | |
327 | ;(define-key function-key-map [M-delete] [?\M-\d]) | |
328 | ||
329 | ;; These tell read-char how to convert | |
330 | ;; these special chars to ASCII. | |
331 | (put 'tab 'ascii-character ?\t) | |
332 | (put 'linefeed 'ascii-character ?\n) | |
333 | (put 'clear 'ascii-character 12) | |
334 | (put 'return 'ascii-character 13) | |
335 | (put 'escape 'ascii-character ?\e) | |
336 | (put 'backspace 'ascii-character 127) | |
337 | (put 'delete 'ascii-character 127) | |
338 | ||
5e568214 JR |
339 | ;; W32 uses different color indexes than standard: |
340 | ||
341 | (defvar w32-tty-standard-colors | |
342 | '(("white" 15 65535 65535 65535) | |
343 | ("yellow" 14 65535 65535 0) ; Yellow | |
344 | ("lightmagenta" 13 65535 0 65535) ; Magenta | |
345 | ("lightred" 12 65535 0 0) ; Red | |
346 | ("lightcyan" 11 0 65535 65535) ; Cyan | |
347 | ("lightgreen" 10 0 65535 0) ; Green | |
348 | ("lightblue" 9 0 0 65535) ; Blue | |
349 | ("darkgray" 8 26112 26112 26112) ; Gray40 | |
350 | ("lightgray" 7 48640 48640 48640) ; Gray | |
351 | ("brown" 6 40960 20992 11520) ; Sienna | |
352 | ("magenta" 5 35584 0 35584) ; DarkMagenta | |
353 | ("red" 4 45568 8704 8704) ; FireBrick | |
354 | ("cyan" 3 0 52736 53504) ; DarkTurquoise | |
355 | ("green" 2 8704 35584 8704) ; ForestGreen | |
356 | ("blue" 1 0 0 52480) ; MediumBlue | |
357 | ("black" 0 0 0 0)) | |
358 | "A list of VGA console colors, their indices and 16-bit RGB values.") | |
359 | ||
15fa6efb JR |
360 | |
361 | (defun w32-add-charset-info (xlfd-charset windows-charset codepage) | |
362 | "Function to add character sets to display with Windows fonts. | |
363 | Creates entries in `w32-charset-info-alist'. | |
364 | XLFD-CHARSET is a string which will appear in the XLFD font name to | |
365 | identify the character set. WINDOWS-CHARSET is a symbol identifying | |
366 | the Windows character set this maps to. For the list of possible | |
367 | values, see the documentation for `w32-charset-info-alist'. CODEPAGE | |
368 | can be a numeric codepage that Windows uses to display the character | |
369 | set, t for Unicode output with no codepage translation or nil for 8 | |
370 | bit output with no translation." | |
371 | (add-to-list 'w32-charset-info-alist | |
372 | (cons xlfd-charset (cons windows-charset codepage))) | |
373 | ) | |
374 | ||
375 | (w32-add-charset-info "iso8859-1" 'w32-charset-ansi 1252) | |
376 | (w32-add-charset-info "iso8859-14" 'w32-charset-ansi 28604) | |
377 | (w32-add-charset-info "iso8859-15" 'w32-charset-ansi 28605) | |
378 | (w32-add-charset-info "jisx0208-sjis" 'w32-charset-shiftjis 932) | |
379 | (w32-add-charset-info "jisx0201-latin" 'w32-charset-shiftjis 932) | |
380 | (w32-add-charset-info "jisx0201-katakana" 'w32-charset-shiftjis 932) | |
381 | (w32-add-charset-info "ksc5601.1987" 'w32-charset-hangeul 949) | |
382 | (w32-add-charset-info "big5" 'w32-charset-chinesebig5 950) | |
383 | (w32-add-charset-info "gb2312" 'w32-charset-gb2312 936) | |
384 | (w32-add-charset-info "ms-symbol" 'w32-charset-symbol nil) | |
385 | (w32-add-charset-info "ms-oem" 'w32-charset-oem 437) | |
386 | (w32-add-charset-info "ms-oemlatin" 'w32-charset-oem 850) | |
387 | (if (boundp 'w32-extra-charsets-defined) | |
388 | (progn | |
389 | (w32-add-charset-info "iso8859-2" 'w32-charset-easteurope 28592) | |
390 | (w32-add-charset-info "iso8859-3" 'w32-charset-turkish 28593) | |
391 | (w32-add-charset-info "iso8859-4" 'w32-charset-baltic 28594) | |
392 | (w32-add-charset-info "iso8859-5" 'w32-charset-russian 28595) | |
393 | (w32-add-charset-info "iso8859-6" 'w32-charset-arabic 28596) | |
394 | (w32-add-charset-info "iso8859-7" 'w32-charset-greek 28597) | |
395 | (w32-add-charset-info "iso8859-8" 'w32-charset-hebrew 1255) | |
396 | (w32-add-charset-info "iso8859-9" 'w32-charset-turkish 1254) | |
397 | (w32-add-charset-info "iso8859-13" 'w32-charset-baltic 1257) | |
398 | (w32-add-charset-info "koi8-r" 'w32-charset-russian 20866) | |
399 | (w32-add-charset-info "tis620" 'w32-charset-thai 874) | |
400 | (w32-add-charset-info "ksc5601.1992" 'w32-charset-johab 1361) | |
401 | (w32-add-charset-info "mac" 'w32-charset-mac nil))) | |
402 | (if (boundp 'w32-unicode-charset-defined) | |
403 | (progn | |
404 | (w32-add-charset-info "iso10646" 'w32-charset-unicode t) | |
405 | (w32-add-charset-info "unicode" 'w32-charset-unicode t))) | |
406 | ||
52f32671 | 407 | |
47092217 JR |
408 | (make-obsolete-variable 'w32-enable-italics |
409 | 'w32-enable-synthesized-fonts "21.1") | |
d4b7d6b4 | 410 | (make-obsolete-variable 'w32-charset-to-codepage-alist |
47092217 | 411 | 'w32-charset-info-alist "21.1") |
d4b7d6b4 | 412 | |
3b4cf5db AI |
413 | \f |
414 | ;;;; Selections and cut buffers | |
415 | ||
416 | ;;; We keep track of the last text selected here, so we can check the | |
417 | ;;; current selection against it, and avoid passing back our own text | |
418 | ;;; from x-cut-buffer-or-selection-value. | |
419 | (defvar x-last-selected-text nil) | |
420 | ||
421 | ;;; It is said that overlarge strings are slow to put into the cut buffer. | |
422 | ;;; Note this value is overridden below. | |
423 | (defvar x-cut-buffer-max 20000 | |
424 | "Max number of characters to put in the cut buffer.") | |
425 | ||
426 | (defcustom x-select-enable-clipboard t | |
427 | "Non-nil means cutting and pasting uses the clipboard. | |
428 | This is in addition to the primary selection." | |
429 | :type 'boolean | |
430 | :group 'killing) | |
431 | ||
432 | (defun x-select-text (text &optional push) | |
433 | "Make TEXT the last selected text. | |
434 | If `x-select-enable-clipboard' is non-nil, copy the text to the system | |
435 | clipboard as well. Optional PUSH is ignored on Windows." | |
436 | (if x-select-enable-clipboard | |
437 | (w32-set-clipboard-data text)) | |
438 | (setq x-last-selected-text text)) | |
439 | ||
440 | (defun x-get-selection-value () | |
441 | "Return the value of the current selection. | |
442 | Consult the selection, then the cut buffer. Treat empty strings as if | |
443 | they were unset." | |
444 | (if x-select-enable-clipboard | |
445 | (let (text) | |
446 | ;; Don't die if x-get-selection signals an error. | |
447 | (condition-case c | |
448 | (setq text (w32-get-clipboard-data)) | |
449 | (error (message "w32-get-clipboard-data:%s" c))) | |
450 | (if (string= text "") (setq text nil)) | |
451 | (cond | |
452 | ((not text) nil) | |
453 | ((eq text x-last-selected-text) nil) | |
454 | ((string= text x-last-selected-text) | |
455 | ;; Record the newer string, so subsequent calls can use the 'eq' test. | |
456 | (setq x-last-selected-text text) | |
457 | nil) | |
458 | (t | |
459 | (setq x-last-selected-text text)))))) | |
460 | \f | |
461 | (defalias 'x-cut-buffer-or-selection-value 'x-get-selection-value) | |
462 | ||
463 | ;;; Arrange for the kill and yank functions to set and check the clipboard. | |
464 | (setq interprogram-cut-function 'x-select-text) | |
465 | (setq interprogram-paste-function 'x-get-selection-value) | |
466 | ||
467 | ||
a0d14345 | 468 | ;;; w32-fns.el ends here |