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1 ;;; startup.el --- process Emacs shell arguments
2
3 ;; Copyright (C) 1985, 1986, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 ;; 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
5
6 ;; Maintainer: FSF
7 ;; Keywords: internal
8
9 ;; This file is part of GNU Emacs.
10
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; any later version.
15
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
20
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 ;; Boston, MA 02110-1301, USA.
25
26 ;;; Commentary:
27
28 ;; This file parses the command line and gets Emacs running. Options
29 ;; on the command line are handled in precedence order. For priorities
30 ;; see the structure standard_args in the emacs.c file.
31
32 ;;; Code:
33
34 (setq top-level '(normal-top-level))
35
36 (defvar command-line-processed nil
37 "Non-nil once command line has been processed.")
38
39 (defgroup initialization nil
40 "Emacs start-up procedure."
41 :group 'internal)
42
43 (defcustom inhibit-splash-screen nil
44 "Non-nil inhibits the startup screen.
45 It also inhibits display of the initial message in the *scratch* buffer.
46
47 This is for use in your personal init file, once you are familiar
48 with the contents of the startup screen."
49 :type 'boolean
50 :group 'initialization)
51
52 (defvaralias 'inhibit-startup-message 'inhibit-splash-screen)
53
54 (defcustom inhibit-startup-echo-area-message nil
55 "*Non-nil inhibits the initial startup echo area message.
56 Setting this variable takes effect
57 only if you do it with the customization buffer
58 or if your `.emacs' file contains a line of this form:
59 (setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\")
60 If your `.emacs' file is byte-compiled, use the following form instead:
61 (eval '(setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\"))
62 Thus, someone else using a copy of your `.emacs' file will see
63 the startup message unless he personally acts to inhibit it."
64 :type '(choice (const :tag "Don't inhibit")
65 (string :tag "Enter your user name, to inhibit"))
66 :group 'initialization)
67
68 (defcustom inhibit-default-init nil
69 "*Non-nil inhibits loading the `default' library."
70 :type 'boolean
71 :group 'initialization)
72
73 (defcustom inhibit-startup-buffer-menu nil
74 "*Non-nil inhibits display of buffer list when more than 2 files are loaded."
75 :type 'boolean
76 :group 'initialization)
77
78 (defvar command-switch-alist nil
79 "Alist of command-line switches.
80 Elements look like (SWITCH-STRING . HANDLER-FUNCTION).
81 HANDLER-FUNCTION receives the switch string as its sole argument;
82 the remaining command-line args are in the variable `command-line-args-left'.")
83
84 (defvar command-line-args-left nil
85 "List of command-line args not yet processed.")
86
87 (defvar command-line-functions nil ;; lrs 7/31/89
88 "List of functions to process unrecognized command-line arguments.
89 Each function should access the dynamically bound variables
90 `argi' (the current argument) and `command-line-args-left' (the remaining
91 arguments). The function should return non-nil only if it recognizes and
92 processes `argi'. If it does so, it may consume successive arguments by
93 altering `command-line-args-left' to remove them.")
94
95 (defvar command-line-default-directory nil
96 "Default directory to use for command line arguments.
97 This is normally copied from `default-directory' when Emacs starts.")
98
99 ;;; This is here, rather than in x-win.el, so that we can ignore these
100 ;;; options when we are not using X.
101 (defconst command-line-x-option-alist
102 '(("-bw" 1 x-handle-numeric-switch border-width)
103 ("-d" 1 x-handle-display)
104 ("-display" 1 x-handle-display)
105 ("-name" 1 x-handle-name-switch)
106 ("-title" 1 x-handle-switch title)
107 ("-T" 1 x-handle-switch title)
108 ("-r" 0 x-handle-switch reverse t)
109 ("-rv" 0 x-handle-switch reverse t)
110 ("-reverse" 0 x-handle-switch reverse t)
111 ("-reverse-video" 0 x-handle-switch reverse t)
112 ("-fn" 1 x-handle-switch font)
113 ("-font" 1 x-handle-switch font)
114 ("-fs" 0 x-handle-initial-switch fullscreen fullboth)
115 ("-fw" 0 x-handle-initial-switch fullscreen fullwidth)
116 ("-fh" 0 x-handle-initial-switch fullscreen fullheight)
117 ("-ib" 1 x-handle-numeric-switch internal-border-width)
118 ("-g" 1 x-handle-geometry)
119 ("-lsp" 1 x-handle-numeric-switch line-spacing)
120 ("-geometry" 1 x-handle-geometry)
121 ("-fg" 1 x-handle-switch foreground-color)
122 ("-foreground" 1 x-handle-switch foreground-color)
123 ("-bg" 1 x-handle-switch background-color)
124 ("-background" 1 x-handle-switch background-color)
125 ("-ms" 1 x-handle-switch mouse-color)
126 ("-nbi" 0 x-handle-switch icon-type nil)
127 ("-iconic" 0 x-handle-iconic)
128 ("-xrm" 1 x-handle-xrm-switch)
129 ("-cr" 1 x-handle-switch cursor-color)
130 ("-vb" 0 x-handle-switch vertical-scroll-bars t)
131 ("-hb" 0 x-handle-switch horizontal-scroll-bars t)
132 ("-bd" 1 x-handle-switch)
133 ("--border-width" 1 x-handle-numeric-switch border-width)
134 ("--display" 1 x-handle-display)
135 ("--name" 1 x-handle-name-switch)
136 ("--title" 1 x-handle-switch title)
137 ("--reverse-video" 0 x-handle-switch reverse t)
138 ("--font" 1 x-handle-switch font)
139 ("--fullscreen" 0 x-handle-initial-switch fullscreen fullboth)
140 ("--fullwidth" 0 x-handle-initial-switch fullscreen fullwidth)
141 ("--fullheight" 0 x-handle-initial-switch fullscreen fullheight)
142 ("--internal-border" 1 x-handle-numeric-switch internal-border-width)
143 ("--geometry" 1 x-handle-geometry)
144 ("--foreground-color" 1 x-handle-switch foreground-color)
145 ("--background-color" 1 x-handle-switch background-color)
146 ("--mouse-color" 1 x-handle-switch mouse-color)
147 ("--no-bitmap-icon" 0 x-handle-switch icon-type nil)
148 ("--iconic" 0 x-handle-iconic)
149 ("--xrm" 1 x-handle-xrm-switch)
150 ("--cursor-color" 1 x-handle-switch cursor-color)
151 ("--vertical-scroll-bars" 0 x-handle-switch vertical-scroll-bars t)
152 ("--line-spacing" 1 x-handle-numeric-switch line-spacing)
153 ("--border-color" 1 x-handle-switch border-color)
154 ("--smid" 1 x-handle-smid))
155 "Alist of X Windows options.
156 Each element has the form
157 (NAME NUMARGS HANDLER FRAME-PARAM VALUE)
158 where NAME is the option name string, NUMARGS is the number of arguments
159 that the option accepts, HANDLER is a function to call to handle the option.
160 FRAME-PARAM (optional) is the frame parameter this option specifies,
161 and VALUE is the value which is given to that frame parameter
162 \(most options use the argument for this, so VALUE is not present).")
163
164 (defvar before-init-hook nil
165 "Normal hook run after handling urgent options but before loading init files.")
166
167 (defvar after-init-hook nil
168 "Normal hook run after loading the init files, `~/.emacs' and `default.el'.
169 There is no `condition-case' around the running of these functions;
170 therefore, if you set `debug-on-error' non-nil in `.emacs',
171 an error in one of these functions will invoke the debugger.")
172
173 (defvar emacs-startup-hook nil
174 "Normal hook run after loading init files and handling the command line.")
175
176 (defvar term-setup-hook nil
177 "Normal hook run after loading terminal-specific Lisp code.
178 It also follows `emacs-startup-hook'. This hook exists for users to set,
179 so as to override the definitions made by the terminal-specific file.
180 Emacs never sets this variable itself.")
181
182 (defvar inhibit-startup-hooks nil
183 "Non-nil means don't run `term-setup-hook' and `emacs-startup-hook'.
184 This is because we already did so.")
185
186 (defvar keyboard-type nil
187 "The brand of keyboard you are using.
188 This variable is used to define the proper function and keypad
189 keys for use under X. It is used in a fashion analogous to the
190 environment variable TERM.")
191
192 (defvar window-setup-hook nil
193 "Normal hook run to initialize window system display.
194 Emacs runs this hook after processing the command line arguments and loading
195 the user's init file.")
196
197 (defcustom initial-major-mode 'lisp-interaction-mode
198 "Major mode command symbol to use for the initial *scratch* buffer."
199 :type 'function
200 :group 'initialization)
201
202 (defvar init-file-user nil
203 "Identity of user whose `.emacs' file is or was read.
204 The value is nil if `-q' or `--no-init-file' was specified,
205 meaning do not load any init file.
206
207 Otherwise, the value may be an empty string, meaning
208 use the init file for the user who originally logged in,
209 or it may be a string containing a user's name meaning
210 use that person's init file.
211
212 In either of the latter cases, `(concat \"~\" init-file-user \"/\")'
213 evaluates to the name of the directory where the `.emacs' file was
214 looked for.
215
216 Setting `init-file-user' does not prevent Emacs from loading
217 `site-start.el'. The only way to do that is to use `--no-site-file'.")
218
219 (defcustom site-run-file "site-start"
220 "File containing site-wide run-time initializations.
221 This file is loaded at run-time before `~/.emacs'. It contains inits
222 that need to be in place for the entire site, but which, due to their
223 higher incidence of change, don't make sense to load into Emacs's
224 dumped image. Thus, the run-time load order is: 1. file described in
225 this variable, if non-nil; 2. `~/.emacs'; 3. `default.el'.
226
227 Don't use the `site-start.el' file for things some users may not like.
228 Put them in `default.el' instead, so that users can more easily
229 override them. Users can prevent loading `default.el' with the `-q'
230 option or by setting `inhibit-default-init' in their own init files,
231 but inhibiting `site-start.el' requires `--no-site-file', which
232 is less convenient.
233
234 This variable is defined for customization so as to make
235 it visible in the relevant context. However, actually customizing it
236 is not allowed, since it would not work anyway. The only way to set
237 this variable usefully is to set it while building and dumping Emacs."
238 :type '(choice (const :tag "none" nil) string)
239 :group 'initialization
240 :initialize 'custom-initialize-default
241 :set '(lambda (variable value)
242 (error "Customizing `site-run-file' does not work")))
243
244 (defcustom mail-host-address nil
245 "*Name of this machine, for purposes of naming users."
246 :type '(choice (const nil) string)
247 :group 'mail)
248
249 (defcustom user-mail-address (if command-line-processed
250 (or (getenv "EMAIL")
251 (concat (user-login-name) "@"
252 (or mail-host-address
253 (system-name))))
254 ;; Empty string means "not set yet".
255 "")
256 "*Full mailing address of this user.
257 This is initialized with environment variable `EMAIL' or, as a
258 fallback, using `mail-host-address'. This is done after your
259 init file is read, in case it sets `mail-host-address'."
260 :type 'string
261 :group 'mail)
262
263 (defcustom auto-save-list-file-prefix
264 (cond ((eq system-type 'ms-dos)
265 ;; MS-DOS cannot have initial dot, and allows only 8.3 names
266 "~/_emacs.d/auto-save.list/_s")
267 (t
268 "~/.emacs.d/auto-save-list/.saves-"))
269 "Prefix for generating `auto-save-list-file-name'.
270 This is used after reading your `.emacs' file to initialize
271 `auto-save-list-file-name', by appending Emacs's pid and the system name,
272 if you have not already set `auto-save-list-file-name' yourself.
273 Directories in the prefix will be created if necessary.
274 Set this to nil if you want to prevent `auto-save-list-file-name'
275 from being initialized."
276 :type '(choice (const :tag "Don't record a session's auto save list" nil)
277 string)
278 :group 'auto-save)
279
280 (defvar emacs-quick-startup nil)
281
282 (defvar emacs-basic-display nil)
283
284 (defvar init-file-debug nil)
285
286 (defvar init-file-had-error nil
287 "Non-nil if there was an error loading the user's init file.")
288
289 (defvar normal-top-level-add-subdirs-inode-list nil)
290
291 (defvar no-blinking-cursor nil)
292
293 (defvar default-frame-background-mode)
294
295 (defvar pure-space-overflow nil
296 "Non-nil if building Emacs overflowed pure space.")
297
298 (defun normal-top-level-add-subdirs-to-load-path ()
299 "Add all subdirectories of current directory to `load-path'.
300 More precisely, this uses only the subdirectories whose names
301 start with letters or digits; it excludes any subdirectory named `RCS'
302 or `CVS', and any subdirectory that contains a file named `.nosearch'."
303 (let (dirs
304 attrs
305 (pending (list default-directory)))
306 ;; This loop does a breadth-first tree walk on DIR's subtree,
307 ;; putting each subdir into DIRS as its contents are examined.
308 (while pending
309 (push (pop pending) dirs)
310 (let* ((this-dir (car dirs))
311 (contents (directory-files this-dir))
312 (default-directory this-dir)
313 (canonicalized (if (fboundp 'untranslated-canonical-name)
314 (untranslated-canonical-name this-dir))))
315 ;; The Windows version doesn't report meaningful inode
316 ;; numbers, so use the canonicalized absolute file name of the
317 ;; directory instead.
318 (setq attrs (or canonicalized
319 (nthcdr 10 (file-attributes this-dir))))
320 (unless (member attrs normal-top-level-add-subdirs-inode-list)
321 (push attrs normal-top-level-add-subdirs-inode-list)
322 (dolist (file contents)
323 ;; The lower-case variants of RCS and CVS are for DOS/Windows.
324 (unless (member file '("." ".." "RCS" "CVS" "rcs" "cvs"))
325 (when (and (string-match "\\`[[:alnum:]]" file)
326 ;; Avoid doing a `stat' when it isn't necessary
327 ;; because that can cause trouble when an NFS server
328 ;; is down.
329 (not (string-match "\\.elc?\\'" file))
330 (file-directory-p file))
331 (let ((expanded (expand-file-name file)))
332 (unless (file-exists-p (expand-file-name ".nosearch"
333 expanded))
334 (setq pending (nconc pending (list expanded)))))))))))
335 (normal-top-level-add-to-load-path (cdr (nreverse dirs)))))
336
337 ;; This function is called from a subdirs.el file.
338 ;; It assumes that default-directory is the directory
339 ;; in which the subdirs.el file exists,
340 ;; and it adds to load-path the subdirs of that directory
341 ;; as specified in DIRS. Normally the elements of DIRS are relative.
342 (defun normal-top-level-add-to-load-path (dirs)
343 (let ((tail load-path)
344 (thisdir (directory-file-name default-directory)))
345 (while (and tail
346 ;;Don't go all the way to the nil terminator.
347 (cdr tail)
348 (not (equal thisdir (car tail)))
349 (not (and (memq system-type '(ms-dos windows-nt))
350 (equal (downcase thisdir) (downcase (car tail))))))
351 (setq tail (cdr tail)))
352 ;;Splice the new section in.
353 (when tail
354 (setcdr tail (append (mapcar 'expand-file-name dirs) (cdr tail))))))
355
356 (defun normal-top-level ()
357 (if command-line-processed
358 (message "Back to top level.")
359 (setq command-line-processed t)
360 ;; Give *Messages* the same default-directory as *scratch*,
361 ;; just to keep things predictable.
362 (let ((dir default-directory))
363 (with-current-buffer "*Messages*"
364 (setq default-directory dir)))
365 ;; `user-full-name' is now known; reset its standard-value here.
366 (put 'user-full-name 'standard-value
367 (list (default-value 'user-full-name)))
368 ;; For root, preserve owner and group when editing files.
369 (if (equal (user-uid) 0)
370 (setq backup-by-copying-when-mismatch t))
371 ;; Look in each dir in load-path for a subdirs.el file.
372 ;; If we find one, load it, which will add the appropriate subdirs
373 ;; of that dir into load-path,
374 ;; Look for a leim-list.el file too. Loading it will register
375 ;; available input methods.
376 (let ((tail load-path) dir)
377 (while tail
378 (setq dir (car tail))
379 (let ((default-directory dir))
380 (load (expand-file-name "subdirs.el") t t t))
381 (let ((default-directory dir))
382 (load (expand-file-name "leim-list.el") t t t))
383 ;; We don't use a dolist loop and we put this "setq-cdr" command at
384 ;; the end, because the subdirs.el files may add elements to the end
385 ;; of load-path and we want to take it into account.
386 (setq tail (cdr tail))))
387 (unless (eq system-type 'vax-vms)
388 ;; If the PWD environment variable isn't accurate, delete it.
389 (let ((pwd (getenv "PWD")))
390 (and (stringp pwd)
391 ;; Use FOO/., so that if FOO is a symlink, file-attributes
392 ;; describes the directory linked to, not FOO itself.
393 (or (equal (file-attributes
394 (concat (file-name-as-directory pwd) "."))
395 (file-attributes
396 (concat (file-name-as-directory default-directory)
397 ".")))
398 (setq process-environment
399 (delete (concat "PWD=" pwd)
400 process-environment))))))
401 (setq default-directory (abbreviate-file-name default-directory))
402 (let ((menubar-bindings-done nil))
403 (unwind-protect
404 (command-line)
405 ;; Do this again, in case .emacs defined more abbreviations.
406 (setq default-directory (abbreviate-file-name default-directory))
407 ;; Specify the file for recording all the auto save files of this session.
408 ;; This is used by recover-session.
409 (or auto-save-list-file-name
410 (and auto-save-list-file-prefix
411 (setq auto-save-list-file-name
412 ;; Under MS-DOS our PID is almost always reused between
413 ;; Emacs invocations. We need something more unique.
414 (cond ((eq system-type 'ms-dos)
415 ;; We are going to access the auto-save
416 ;; directory, so make sure it exists.
417 (make-directory
418 (file-name-directory auto-save-list-file-prefix)
419 t)
420 (concat
421 (make-temp-name
422 (expand-file-name
423 auto-save-list-file-prefix))
424 "~"))
425 (t
426 (expand-file-name
427 (format "%s%d-%s~"
428 auto-save-list-file-prefix
429 (emacs-pid)
430 (system-name))))))))
431 (unless inhibit-startup-hooks
432 (run-hooks 'emacs-startup-hook)
433 (and term-setup-hook
434 (run-hooks 'term-setup-hook)))
435
436 ;; Don't do this if we failed to create the initial frame,
437 ;; for instance due to a dense colormap.
438 (when (or frame-initial-frame
439 ;; If frame-initial-frame has no meaning, do this anyway.
440 (not (and window-system
441 (not noninteractive)
442 (not (eq window-system 'pc)))))
443 ;; Modify the initial frame based on what .emacs puts into
444 ;; ...-frame-alist.
445 (if (fboundp 'frame-notice-user-settings)
446 (frame-notice-user-settings))
447 (if (fboundp 'frame-set-background-mode)
448 ;; Set the faces for the initial background mode even if
449 ;; frame-notice-user-settings didn't (such as on a tty).
450 ;; frame-set-background-mode is idempotent, so it won't
451 ;; cause any harm if it's already been done.
452 (let ((frame (selected-frame))
453 term)
454 (when (and (null window-system)
455 ;; Don't override default set by files in lisp/term.
456 (null default-frame-background-mode)
457 (let ((bg (frame-parameter frame 'background-color)))
458 (or (null bg)
459 (member bg '(unspecified "unspecified-bg"
460 "unspecified-fg")))))
461
462 (setq term (getenv "TERM"))
463 ;; Some files in lisp/term do a better job with the
464 ;; background mode, but we leave this here anyway, in
465 ;; case they remove those files.
466 (if (string-match "^\\(xterm\\|rxvt\\|dtterm\\|eterm\\)"
467 term)
468 (setq default-frame-background-mode 'light)))
469 (frame-set-background-mode (selected-frame)))))
470
471 ;; Now we know the user's default font, so add it to the menu.
472 (if (fboundp 'font-menu-add-default)
473 (font-menu-add-default))
474 (and window-setup-hook
475 (run-hooks 'window-setup-hook))
476 (or menubar-bindings-done
477 (if (display-popup-menus-p)
478 (precompute-menubar-bindings)))))))
479
480 ;; Precompute the keyboard equivalents in the menu bar items.
481 (defun precompute-menubar-bindings ()
482 (let ((submap (lookup-key global-map [menu-bar])))
483 (while submap
484 (and (consp (car submap))
485 (symbolp (car (car submap)))
486 (stringp (car-safe (cdr (car submap))))
487 (keymapp (cdr (cdr (car submap))))
488 (progn
489 (x-popup-menu nil (cdr (cdr (car submap))))
490 (if purify-flag
491 (garbage-collect))))
492 (setq submap (cdr submap))))
493 (setq define-key-rebound-commands t))
494
495 ;; Command-line options supported by tty's:
496 (defconst tty-long-option-alist
497 '(("--name" . "-name")
498 ("--title" . "-T")
499 ("--reverse-video" . "-reverse")
500 ("--foreground-color" . "-fg")
501 ("--background-color" . "-bg")
502 ("--color" . "-color")))
503
504 (defconst tool-bar-images-pixel-height 24
505 "Height in pixels of images in the tool bar.")
506
507 (defvar tool-bar-originally-present nil
508 "Non-nil if tool-bars are present before user and site init files are read.")
509
510 ;; Handle the X-like command-line arguments "-fg", "-bg", "-name", etc.
511 (defun tty-handle-args (args)
512 (let (rest)
513 (message "%s" args)
514 (while (and args
515 (not (equal (car args) "--")))
516 (let* ((argi (pop args))
517 (orig-argi argi)
518 argval completion)
519 ;; Check for long options with attached arguments
520 ;; and separate out the attached option argument into argval.
521 (when (string-match "^\\(--[^=]*\\)=" argi)
522 (setq argval (substring argi (match-end 0))
523 argi (match-string 1 argi)))
524 (when (string-match "^--" argi)
525 (setq completion (try-completion argi tty-long-option-alist))
526 (if (eq completion t)
527 ;; Exact match for long option.
528 (setq argi (cdr (assoc argi tty-long-option-alist)))
529 (if (stringp completion)
530 (let ((elt (assoc completion tty-long-option-alist)))
531 ;; Check for abbreviated long option.
532 (or elt
533 (error "Option `%s' is ambiguous" argi))
534 (setq argi (cdr elt)))
535 ;; Check for a short option.
536 (setq argval nil
537 argi orig-argi))))
538 (cond ((member argi '("-fg" "-foreground"))
539 (push (cons 'foreground-color (or argval (pop args)))
540 default-frame-alist))
541 ((member argi '("-bg" "-background"))
542 (push (cons 'background-color (or argval (pop args)))
543 default-frame-alist))
544 ((member argi '("-T" "-name"))
545 (unless argval (setq argval (pop args)))
546 (push (cons 'title
547 (if (stringp argval)
548 argval
549 (let ((case-fold-search t)
550 i)
551 (setq argval (invocation-name))
552
553 ;; Change any . or * characters in name to
554 ;; hyphens, so as to emulate behavior on X.
555 (while
556 (setq i (string-match "[.*]" argval))
557 (aset argval i ?-))
558 argval)))
559 default-frame-alist))
560 ((member argi '("-r" "-rv" "-reverse"))
561 (push '(reverse . t)
562 default-frame-alist))
563 ((equal argi "-color")
564 (unless argval (setq argval 8)) ; default --color means 8 ANSI colors
565 (push (cons 'tty-color-mode
566 (cond
567 ((numberp argval) argval)
568 ((string-match "-?[0-9]+" argval)
569 (string-to-number argval))
570 (t (intern argval))))
571 default-frame-alist))
572 (t
573 (push argi rest)))))
574 (nreverse rest)))
575
576 (defun command-line ()
577 (setq command-line-default-directory default-directory)
578
579 ;; Choose a reasonable location for temporary files.
580 (custom-reevaluate-setting 'temporary-file-directory)
581 (custom-reevaluate-setting 'small-temporary-file-directory)
582 (custom-reevaluate-setting 'auto-save-file-name-transforms)
583
584 ;; See if we should import version-control from the environment variable.
585 (let ((vc (getenv "VERSION_CONTROL")))
586 (cond ((eq vc nil)) ;don't do anything if not set
587 ((member vc '("t" "numbered"))
588 (setq version-control t))
589 ((member vc '("nil" "existing"))
590 (setq version-control nil))
591 ((member vc '("never" "simple"))
592 (setq version-control 'never))))
593
594 ;;! This has been commented out; I currently find the behavior when
595 ;;! split-window-keep-point is nil disturbing, but if I can get used
596 ;;! to it, then it would be better to eliminate the option.
597 ;;! ;; Choose a good default value for split-window-keep-point.
598 ;;! (setq split-window-keep-point (> baud-rate 2400))
599
600 ;; Set the default strings to display in mode line for
601 ;; end-of-line formats that aren't native to this platform.
602 (cond
603 ((memq system-type '(ms-dos windows-nt emx))
604 (setq eol-mnemonic-unix "(Unix)"
605 eol-mnemonic-mac "(Mac)"))
606 ;; Both Mac and Unix EOLs are now "native" on Mac OS so keep the
607 ;; abbreviated strings `/' and `:' set in coding.c for them.
608 ((eq system-type 'macos)
609 (setq eol-mnemonic-dos "(DOS)"))
610 (t ; this is for Unix/GNU/Linux systems
611 (setq eol-mnemonic-dos "(DOS)"
612 eol-mnemonic-mac "(Mac)")))
613
614 ;; Read window system's init file if using a window system.
615 (condition-case error
616 (if (and window-system (not noninteractive))
617 (load (concat term-file-prefix
618 (symbol-name window-system)
619 "-win")
620 ;; Every window system should have a startup file;
621 ;; barf if we can't find it.
622 nil t))
623 ;; If we can't read it, print the error message and exit.
624 (error
625 (princ
626 (if (eq (car error) 'error)
627 (apply 'concat (cdr error))
628 (if (memq 'file-error (get (car error) 'error-conditions))
629 (format "%s: %s"
630 (nth 1 error)
631 (mapconcat (lambda (obj) (prin1-to-string obj t))
632 (cdr (cdr error)) ", "))
633 (format "%s: %s"
634 (get (car error) 'error-message)
635 (mapconcat (lambda (obj) (prin1-to-string obj t))
636 (cdr error) ", "))))
637 'external-debugging-output)
638 (terpri 'external-debugging-output)
639 (setq window-system nil)
640 (kill-emacs)))
641
642 ;; Windowed displays do this inside their *-win.el.
643 (unless (or (display-graphic-p) noninteractive)
644 (setq command-line-args (tty-handle-args command-line-args)))
645
646 (set-locale-environment nil)
647
648 ;; Convert preloaded file names in load-history to absolute.
649 (let ((simple-file-name
650 ;; Look for simple.el or simple.elc and use their directory
651 ;; as the place where all Lisp files live.
652 (locate-file "simple" load-path (get-load-suffixes)))
653 lisp-dir)
654 ;; Don't abort if simple.el cannot be found, but print a warning.
655 (if (null simple-file-name)
656 (progn
657 (princ "Warning: Could not find simple.el nor simple.elc"
658 'external-debugging-output)
659 (terpri 'external-debugging-output))
660 (setq lisp-dir (file-truename (file-name-directory simple-file-name)))
661 (setq load-history
662 (mapcar (lambda (elt)
663 (if (and (stringp (car elt))
664 (not (file-name-absolute-p (car elt))))
665 (cons (concat lisp-dir
666 (car elt))
667 (cdr elt))
668 elt))
669 load-history))))
670
671 ;; Convert the arguments to Emacs internal representation.
672 (let ((args (cdr command-line-args)))
673 (while args
674 (setcar args
675 (decode-coding-string (car args) locale-coding-system t))
676 (pop args)))
677
678 (let ((done nil)
679 (args (cdr command-line-args)))
680
681 ;; Figure out which user's init file to load,
682 ;; either from the environment or from the options.
683 (setq init-file-user (if noninteractive nil (user-login-name)))
684 ;; If user has not done su, use current $HOME to find .emacs.
685 (and init-file-user
686 (equal init-file-user (user-real-login-name))
687 (setq init-file-user ""))
688
689 ;; Process the command-line args, and delete the arguments
690 ;; processed. This is consistent with the way main in emacs.c
691 ;; does things.
692 (while (and (not done) args)
693 (let* ((longopts '(("--no-init-file") ("--no-site-file") ("--debug-init")
694 ("--user") ("--iconic") ("--icon-type") ("--quick")
695 ("--no-blinking-cursor") ("--basic-display")))
696 (argi (pop args))
697 (orig-argi argi)
698 argval)
699 ;; Handle --OPTION=VALUE format.
700 (when (string-match "^\\(--[^=]*\\)=" argi)
701 (setq argval (substring argi (match-end 0))
702 argi (match-string 1 argi)))
703 (unless (equal argi "--")
704 (let ((completion (try-completion argi longopts)))
705 (if (eq completion t)
706 (setq argi (substring argi 1))
707 (if (stringp completion)
708 (let ((elt (assoc completion longopts)))
709 (or elt
710 (error "Option `%s' is ambiguous" argi))
711 (setq argi (substring (car elt) 1)))
712 (setq argval nil
713 argi orig-argi)))))
714 (cond
715 ((member argi '("-Q" "-quick"))
716 (setq init-file-user nil
717 site-run-file nil
718 emacs-quick-startup t))
719 ((member argi '("-D" "-basic-display"))
720 (setq no-blinking-cursor t
721 emacs-basic-display t)
722 (push '(vertical-scroll-bars . nil) initial-frame-alist))
723 ((member argi '("-q" "-no-init-file"))
724 (setq init-file-user nil))
725 ((member argi '("-u" "-user"))
726 (setq init-file-user (or argval (pop args))
727 argval nil))
728 ((equal argi "-no-site-file")
729 (setq site-run-file nil))
730 ((equal argi "-debug-init")
731 (setq init-file-debug t))
732 ((equal argi "-iconic")
733 (push '(visibility . icon) initial-frame-alist))
734 ((member argi '("-icon-type" "-i" "-itype"))
735 (push '(icon-type . t) default-frame-alist))
736 ((member argi '("-nbc" "-no-blinking-cursor"))
737 (setq no-blinking-cursor t))
738 ;; Push the popped arg back on the list of arguments.
739 (t
740 (push argi args)
741 (setq done t)))
742 ;; Was argval set but not used?
743 (and argval
744 (error "Option `%s' doesn't allow an argument" argi))))
745
746 ;; Re-attach the program name to the front of the arg list.
747 (and command-line-args
748 (setcdr command-line-args args)))
749
750 (run-hooks 'before-init-hook)
751
752 ;; Under X Window, this creates the X frame and deletes the terminal frame.
753 (when (fboundp 'frame-initialize)
754 (frame-initialize))
755
756 ;; Turn off blinking cursor if so specified in X resources. This is here
757 ;; only because all other settings of no-blinking-cursor are here.
758 (unless (or noninteractive
759 emacs-basic-display
760 (and (memq window-system '(x w32 mac))
761 (not (member (x-get-resource "cursorBlink" "CursorBlink")
762 '("off" "false")))))
763 (setq no-blinking-cursor t))
764
765 ;; If frame was created with a menu bar, set menu-bar-mode on.
766 (unless (or noninteractive
767 emacs-basic-display
768 (and (memq window-system '(x w32))
769 (<= (frame-parameter nil 'menu-bar-lines) 0)))
770 (menu-bar-mode 1))
771
772 ;; If frame was created with a tool bar, switch tool-bar-mode on.
773 (unless (or noninteractive
774 emacs-basic-display
775 (not (display-graphic-p))
776 (<= (frame-parameter nil 'tool-bar-lines) 0))
777 (tool-bar-mode 1))
778
779 ;; Can't do this init in defcustom because the relevant variables
780 ;; are not set.
781 (custom-reevaluate-setting 'blink-cursor-mode)
782 (custom-reevaluate-setting 'normal-erase-is-backspace)
783 (custom-reevaluate-setting 'tooltip-mode)
784 (custom-reevaluate-setting 'global-font-lock-mode)
785 (custom-reevaluate-setting 'mouse-wheel-down-event)
786 (custom-reevaluate-setting 'mouse-wheel-up-event)
787 (custom-reevaluate-setting 'file-name-shadow-mode)
788 (custom-reevaluate-setting 'send-mail-function)
789 (custom-reevaluate-setting 'focus-follows-mouse)
790 (custom-reevaluate-setting 'global-auto-composition-mode)
791
792 ;; Register default TTY colors for the case the terminal hasn't a
793 ;; terminal init file.
794 (unless (memq window-system '(x w32 mac))
795 ;; We do this regardles of whether the terminal supports colors
796 ;; or not, since they can switch that support on or off in
797 ;; mid-session by setting the tty-color-mode frame parameter.
798 (tty-register-default-colors))
799
800 ;; Record whether the tool-bar is present before the user and site
801 ;; init files are processed. frame-notice-user-settings uses this
802 ;; to determine if the tool-bar has been disabled by the init files,
803 ;; and the frame needs to be resized.
804 (when (fboundp 'frame-notice-user-settings)
805 (let ((tool-bar-lines (or (assq 'tool-bar-lines initial-frame-alist)
806 (assq 'tool-bar-lines default-frame-alist))))
807 (setq tool-bar-originally-present
808 (and tool-bar-lines
809 (cdr tool-bar-lines)
810 (not (eq 0 (cdr tool-bar-lines)))))))
811
812 (let ((old-scalable-fonts-allowed scalable-fonts-allowed)
813 (old-font-list-limit font-list-limit)
814 (old-face-ignored-fonts face-ignored-fonts))
815
816 ;; Run the site-start library if it exists. The point of this file is
817 ;; that it is run before .emacs. There is no point in doing this after
818 ;; .emacs; that is useless.
819 (if site-run-file
820 (load site-run-file t t))
821
822 ;; Sites should not disable this. Only individuals should disable
823 ;; the startup message.
824 (setq inhibit-startup-message nil)
825
826 ;; Warn for invalid user name.
827 (when init-file-user
828 (if (string-match "[~/:\n]" init-file-user)
829 (display-warning 'initialization
830 (format "Invalid user name %s"
831 init-file-user)
832 :error)
833 (if (file-directory-p (expand-file-name
834 ;; We don't support ~USER on MS-Windows except
835 ;; for the current user, and always load .emacs
836 ;; from the current user's home directory (see
837 ;; below). So always check "~", even if invoked
838 ;; with "-u USER", or if $USER or $LOGNAME are
839 ;; set to something different.
840 (if (eq system-type 'windows-nt)
841 "~"
842 (concat "~" init-file-user))))
843 nil
844 (display-warning 'initialization
845 (format "User %s has no home directory"
846 init-file-user)
847 :error))))
848
849 ;; Load that user's init file, or the default one, or none.
850 (let (debug-on-error-from-init-file
851 debug-on-error-should-be-set
852 (debug-on-error-initial
853 (if (eq init-file-debug t) 'startup init-file-debug))
854 (orig-enable-multibyte default-enable-multibyte-characters))
855 (let ((debug-on-error debug-on-error-initial)
856 ;; This function actually reads the init files.
857 (inner
858 (function
859 (lambda ()
860 (if init-file-user
861 (let ((user-init-file-1
862 (cond
863 ((eq system-type 'ms-dos)
864 (concat "~" init-file-user "/_emacs"))
865 ((eq system-type 'windows-nt)
866 ;; Prefer .emacs on Windows.
867 (if (directory-files "~" nil "^\\.emacs\\(\\.elc?\\)?$")
868 "~/.emacs"
869 ;; Also support _emacs for compatibility.
870 (if (directory-files "~" nil "^_emacs\\(\\.elc?\\)?$")
871 "~/_emacs"
872 ;; But default to .emacs if _emacs does not exist.
873 "~/.emacs")))
874 ((eq system-type 'vax-vms)
875 "sys$login:.emacs")
876 (t
877 (concat "~" init-file-user "/.emacs")))))
878 ;; This tells `load' to store the file name found
879 ;; into user-init-file.
880 (setq user-init-file t)
881 (load user-init-file-1 t t)
882
883 (when (eq user-init-file t)
884 ;; If we did not find ~/.emacs, try
885 ;; ~/.emacs.d/init.el.
886 (let ((otherfile
887 (expand-file-name
888 "init"
889 (file-name-as-directory
890 (concat "~" init-file-user "/.emacs.d")))))
891 (load otherfile t t)
892
893 ;; If we did not find the user's init file,
894 ;; set user-init-file conclusively.
895 ;; Don't let it be set from default.el.
896 (when (eq user-init-file t)
897 (setq user-init-file user-init-file-1))))
898
899 ;; If we loaded a compiled file, set
900 ;; `user-init-file' to the source version if that
901 ;; exists.
902 (when (and user-init-file
903 (equal (file-name-extension user-init-file)
904 "elc"))
905 (let* ((source (file-name-sans-extension user-init-file))
906 (alt (concat source ".el")))
907 (setq source (cond ((file-exists-p alt) alt)
908 ((file-exists-p source) source)
909 (t nil)))
910 (when source
911 (when (file-newer-than-file-p source user-init-file)
912 (message "Warning: %s is newer than %s"
913 source user-init-file)
914 (sit-for 1))
915 (setq user-init-file source))))
916
917 (unless inhibit-default-init
918 (let ((inhibit-startup-message nil))
919 ;; Users are supposed to be told their rights.
920 ;; (Plus how to get help and how to undo.)
921 ;; Don't you dare turn this off for anyone
922 ;; except yourself.
923 (load "default" t t)))))))))
924 (if init-file-debug
925 ;; Do this without a condition-case if the user wants to debug.
926 (funcall inner)
927 (condition-case error
928 (progn
929 (funcall inner)
930 (setq init-file-had-error nil))
931 (error
932 (let ((message-log-max nil))
933 (save-excursion
934 (set-buffer (get-buffer-create "*Messages*"))
935 (insert "\n\n"
936 (format "An error has occurred while loading `%s':\n\n"
937 user-init-file)
938 (format "%s%s%s"
939 (get (car error) 'error-message)
940 (if (cdr error) ": " "")
941 (mapconcat (lambda (s) (prin1-to-string s t)) (cdr error) ", "))
942 "\n\n"
943 "To ensure normal operation, you should investigate and remove the\n"
944 "cause of the error in your initialization file. Start Emacs with\n"
945 "the `--debug-init' option to view a complete error backtrace.\n\n"))
946 (message "Error in init file: %s%s%s"
947 (get (car error) 'error-message)
948 (if (cdr error) ": " "")
949 (mapconcat 'prin1-to-string (cdr error) ", "))
950 (let ((pop-up-windows nil))
951 (pop-to-buffer "*Messages*"))
952 (setq init-file-had-error t)))))
953
954 (if (and deactivate-mark transient-mark-mode)
955 (with-current-buffer (window-buffer)
956 (deactivate-mark)))
957
958 ;; If the user has a file of abbrevs, read it.
959 ;; FIXME: after the 22.0 release this should be changed so
960 ;; that it does not read the abbrev file when -batch is used
961 ;; on the command line.
962 (when (and (file-exists-p abbrev-file-name)
963 (file-readable-p abbrev-file-name))
964 (quietly-read-abbrev-file abbrev-file-name))
965
966 ;; If the abbrevs came entirely from the init file or the
967 ;; abbrevs file, they do not need saving.
968 (setq abbrevs-changed nil)
969
970 ;; If we can tell that the init file altered debug-on-error,
971 ;; arrange to preserve the value that it set up.
972 (or (eq debug-on-error debug-on-error-initial)
973 (setq debug-on-error-should-be-set t
974 debug-on-error-from-init-file debug-on-error)))
975 (if debug-on-error-should-be-set
976 (setq debug-on-error debug-on-error-from-init-file))
977 (unless (or default-enable-multibyte-characters
978 (eq orig-enable-multibyte default-enable-multibyte-characters))
979 ;; Init file changed to unibyte. Reset existing multibyte
980 ;; buffers (probably *scratch*, *Messages*, *Minibuff-0*).
981 ;; Arguably this should only be done if they're free of
982 ;; multibyte characters.
983 (mapcar (lambda (buffer)
984 (with-current-buffer buffer
985 (if enable-multibyte-characters
986 (set-buffer-multibyte nil))))
987 (buffer-list))
988 ;; Also re-set the language environment in case it was
989 ;; originally done before unibyte was set and is sensitive to
990 ;; unibyte (display table, terminal coding system &c).
991 (set-language-environment current-language-environment)))
992
993 ;; Do this here in case the init file sets mail-host-address.
994 (if (equal user-mail-address "")
995 (setq user-mail-address (or (getenv "EMAIL")
996 (concat (user-login-name) "@"
997 (or mail-host-address
998 (system-name))))))
999
1000 ;; Originally face attributes were specified via
1001 ;; `font-lock-face-attributes'. Users then changed the default
1002 ;; face attributes by setting that variable. However, we try and
1003 ;; be back-compatible and respect its value if set except for
1004 ;; faces where M-x customize has been used to save changes for the
1005 ;; face.
1006 (when (boundp 'font-lock-face-attributes)
1007 (let ((face-attributes font-lock-face-attributes))
1008 (while face-attributes
1009 (let* ((face-attribute (pop face-attributes))
1010 (face (car face-attribute)))
1011 ;; Rustle up a `defface' SPEC from a
1012 ;; `font-lock-face-attributes' entry.
1013 (unless (get face 'saved-face)
1014 (let ((foreground (nth 1 face-attribute))
1015 (background (nth 2 face-attribute))
1016 (bold-p (nth 3 face-attribute))
1017 (italic-p (nth 4 face-attribute))
1018 (underline-p (nth 5 face-attribute))
1019 face-spec)
1020 (when foreground
1021 (setq face-spec (cons ':foreground (cons foreground face-spec))))
1022 (when background
1023 (setq face-spec (cons ':background (cons background face-spec))))
1024 (when bold-p
1025 (setq face-spec (append '(:weight bold) face-spec)))
1026 (when italic-p
1027 (setq face-spec (append '(:slant italic) face-spec)))
1028 (when underline-p
1029 (setq face-spec (append '(:underline t) face-spec)))
1030 (face-spec-set face (list (list t face-spec)) nil)))))))
1031
1032 ;; If parameter have been changed in the init file which influence
1033 ;; face realization, clear the face cache so that new faces will
1034 ;; be realized.
1035 (unless (and (eq scalable-fonts-allowed old-scalable-fonts-allowed)
1036 (eq font-list-limit old-font-list-limit)
1037 (eq face-ignored-fonts old-face-ignored-fonts))
1038 (clear-face-cache)))
1039
1040 (run-hooks 'after-init-hook)
1041
1042 ;; Decode all default-directory.
1043 (if (and default-enable-multibyte-characters locale-coding-system)
1044 (save-excursion
1045 (dolist (elt (buffer-list))
1046 (set-buffer elt)
1047 (if default-directory
1048 (setq default-directory
1049 (decode-coding-string default-directory
1050 locale-coding-system t))))
1051 (setq command-line-default-directory
1052 (decode-coding-string command-line-default-directory
1053 locale-coding-system t))))
1054
1055 ;; If *scratch* exists and init file didn't change its mode, initialize it.
1056 (if (get-buffer "*scratch*")
1057 (with-current-buffer "*scratch*"
1058 (if (eq major-mode 'fundamental-mode)
1059 (funcall initial-major-mode))))
1060
1061 ;; Load library for our terminal type.
1062 ;; User init file can set term-file-prefix to nil to prevent this.
1063 (unless (or noninteractive
1064 window-system
1065 (null term-file-prefix))
1066 (let* ((TERM (getenv "TERM"))
1067 (term TERM)
1068 hyphend)
1069 (while (and term
1070 (not (load (concat term-file-prefix term) t t)))
1071 ;; Strip off last hyphen and what follows, then try again
1072 (setq term
1073 (if (setq hyphend (string-match "[-_][^-_]+\\'" term))
1074 (substring term 0 hyphend)
1075 nil)))
1076 (setq term TERM)
1077 ;; The terminal file has been loaded, now call the terminal specific
1078 ;; initialization function.
1079 (while term
1080 (let ((term-init-func (intern-soft (concat "terminal-init-" term))))
1081 (if (not (fboundp term-init-func))
1082 ;; Strip off last hyphen and what follows, then try again
1083 (setq term
1084 (if (setq hyphend (string-match "[-_][^-_]+\\'" term))
1085 (substring term 0 hyphend)
1086 nil))
1087 (setq term nil)
1088 (funcall term-init-func))))))
1089
1090 ;; Update the out-of-memory error message based on user's key bindings
1091 ;; for save-some-buffers.
1092 (setq memory-signal-data
1093 (list 'error
1094 (substitute-command-keys "Memory exhausted--use \\[save-some-buffers] then exit and restart Emacs")))
1095
1096 ;; Process the remaining args.
1097 (command-line-1 (cdr command-line-args))
1098
1099 ;; If -batch, terminate after processing the command options.
1100 (if noninteractive (kill-emacs t))
1101
1102 ;; Run emacs-session-restore (session management) if started by
1103 ;; the session manager and we have a session manager connection.
1104 (if (and (boundp 'x-session-previous-id)
1105 (stringp x-session-previous-id))
1106 (with-no-warnings
1107 (emacs-session-restore x-session-previous-id))))
1108
1109 (defcustom initial-scratch-message (purecopy "\
1110 ;; This buffer is for notes you don't want to save, and for Lisp evaluation.
1111 ;; If you want to create a file, visit that file with C-x C-f,
1112 ;; then enter the text in that file's own buffer.
1113
1114 ")
1115 "Initial message displayed in *scratch* buffer at startup.
1116 If this is nil, no message will be displayed.
1117 If `inhibit-splash-screen' is non-nil, then no message is displayed,
1118 regardless of the value of this variable."
1119 :type '(choice (text :tag "Message")
1120 (const :tag "none" nil))
1121 :group 'initialization)
1122
1123 \f
1124 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1125 ;;; Fancy splash screen
1126 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1127
1128 (defvar fancy-splash-text
1129 '((:face (variable-pitch :weight bold)
1130 "Important Help menu items:\n"
1131 :face variable-pitch
1132 (lambda ()
1133 (let* ((en "TUTORIAL")
1134 (tut (or (get-language-info current-language-environment
1135 'tutorial)
1136 en))
1137 (title (with-temp-buffer
1138 (insert-file-contents
1139 (expand-file-name tut data-directory)
1140 nil 0 256)
1141 (search-forward ".")
1142 (buffer-substring (point-min) (1- (point))))))
1143 ;; If there is a specific tutorial for the current language
1144 ;; environment and it is not English, append its title.
1145 (concat
1146 "Emacs Tutorial\tLearn how to use Emacs efficiently"
1147 (if (string= en tut)
1148 ""
1149 (concat " (" title ")"))
1150 "\n")))
1151 :face variable-pitch "\
1152 Emacs FAQ\tFrequently asked questions and answers
1153 View Emacs Manual\tView the Emacs manual using Info
1154 Absence of Warranty\tGNU Emacs comes with "
1155 :face (variable-pitch :slant oblique)
1156 "ABSOLUTELY NO WARRANTY\n"
1157 :face variable-pitch
1158 "\
1159 Copying Conditions\tConditions for redistributing and changing Emacs
1160 Getting New Versions\tHow to obtain the latest version of Emacs
1161 More Manuals / Ordering Manuals Buying printed manuals from the FSF\n")
1162 (:face (variable-pitch :weight bold)
1163 "To quit a partially entered command, type "
1164 :face default
1165 "Control-g"
1166 :face variable-pitch
1167 "."
1168 "Useful File menu items:\n"
1169 :face variable-pitch
1170 "Exit Emacs\t\t(Or type "
1171 :face default
1172 "Control-x"
1173 :face variable-pitch
1174 " followed by "
1175 :face default
1176 "Control-c"
1177 :face variable-pitch
1178 ")
1179 Recover Crashed Session\tRecover files you were editing before a crash
1180
1181
1182
1183
1184
1185 "
1186 ))
1187 "A list of texts to show in the middle part of splash screens.
1188 Each element in the list should be a list of strings or pairs
1189 `:face FACE', like `fancy-splash-insert' accepts them.")
1190
1191
1192 (defgroup fancy-splash-screen ()
1193 "Fancy splash screen when Emacs starts."
1194 :version "21.1"
1195 :group 'initialization)
1196
1197
1198 (defcustom fancy-splash-delay 7
1199 "*Delay in seconds between splash screens."
1200 :group 'fancy-splash-screen
1201 :type 'integer)
1202
1203
1204 (defcustom fancy-splash-max-time 30
1205 "*Show splash screens for at most this number of seconds.
1206 Values less than twice `fancy-splash-delay' are ignored."
1207 :group 'fancy-splash-screen
1208 :type 'integer)
1209
1210
1211 (defcustom fancy-splash-image nil
1212 "*The image to show in the splash screens, or nil for defaults."
1213 :group 'fancy-splash-screen
1214 :type '(choice (const :tag "Default" nil)
1215 (file :tag "File")))
1216
1217
1218 ;; These are temporary storage areas for the splash screen display.
1219
1220 (defvar fancy-current-text nil)
1221 (defvar fancy-splash-help-echo nil)
1222 (defvar fancy-splash-stop-time nil)
1223 (defvar fancy-splash-outer-buffer nil)
1224 (defvar fancy-splash-last-input-event nil)
1225
1226 (defun fancy-splash-insert (&rest args)
1227 "Insert text into the current buffer, with faces.
1228 Arguments from ARGS should be either strings, functions called
1229 with no args that return a string, or pairs `:face FACE',
1230 where FACE is a valid face specification, as it can be used with
1231 `put-text-property'."
1232 (let ((current-face nil))
1233 (while args
1234 (if (eq (car args) :face)
1235 (setq args (cdr args) current-face (car args))
1236 (insert (propertize (let ((it (car args)))
1237 (if (functionp it)
1238 (funcall it)
1239 it))
1240 'face current-face
1241 'help-echo fancy-splash-help-echo)))
1242 (setq args (cdr args)))))
1243
1244
1245 (defun fancy-splash-head ()
1246 "Insert the head part of the splash screen into the current buffer."
1247 (let* ((image-file (cond ((stringp fancy-splash-image)
1248 fancy-splash-image)
1249 ((and (display-color-p)
1250 (image-type-available-p 'xpm))
1251 (if (and (fboundp 'x-display-planes)
1252 (= (funcall 'x-display-planes) 8))
1253 "splash8.xpm"
1254 "splash.xpm"))
1255 (t "splash.pbm")))
1256 (img (create-image image-file))
1257 (image-width (and img (car (image-size img))))
1258 (window-width (window-width (selected-window))))
1259 (when img
1260 (when (> window-width image-width)
1261 ;; Center the image in the window.
1262 (insert (propertize " " 'display
1263 `(space :align-to (+ center (-0.5 . ,img)))))
1264
1265 ;; Change the color of the XPM version of the splash image
1266 ;; so that it is visible with a dark frame background.
1267 (when (and (memq 'xpm img)
1268 (eq (frame-parameter nil 'background-mode) 'dark))
1269 (setq img (append img '(:color-symbols (("#000000" . "gray30"))))))
1270
1271 ;; Insert the image with a help-echo and a keymap.
1272 (let ((map (make-sparse-keymap))
1273 (help-echo "mouse-2: browse http://www.gnu.org/"))
1274 (define-key map [mouse-2]
1275 (lambda ()
1276 (interactive)
1277 (browse-url "http://www.gnu.org/")
1278 (throw 'exit nil)))
1279 (define-key map [down-mouse-2] 'ignore)
1280 (define-key map [up-mouse-2] 'ignore)
1281 (insert-image img (propertize "xxx" 'help-echo help-echo
1282 'keymap map)))
1283 (insert "\n"))))
1284 (fancy-splash-insert
1285 :face '(variable-pitch :background "red")
1286 "\n!! This version is ALPHA status. It may lose your data!!\n\n")
1287 (fancy-splash-insert
1288 :face '(variable-pitch :foreground "red")
1289 (if (eq system-type 'gnu/linux)
1290 "GNU Emacs is one component of the GNU/Linux operating system."
1291 "GNU Emacs is one component of the GNU operating system."))
1292 (insert "\n")
1293 (fancy-splash-insert
1294 :face 'variable-pitch
1295 "You can do basic editing with the menu bar and scroll bar \
1296 using the mouse.\n\n")
1297 (when fancy-splash-outer-buffer
1298 (fancy-splash-insert
1299 :face 'variable-pitch
1300 "Type "
1301 :face 'default
1302 (substitute-command-keys
1303 "\\[recenter]")
1304 :face 'variable-pitch
1305 " to begin editing"
1306 (if (equal (buffer-name fancy-splash-outer-buffer)
1307 "*scratch*")
1308 ".\n"
1309 " your file.\n"))))
1310
1311 (defun fancy-splash-tail ()
1312 "Insert the tail part of the splash screen into the current buffer."
1313 (let ((fg (if (eq (frame-parameter nil 'background-mode) 'dark)
1314 "cyan" "darkblue")))
1315 (fancy-splash-insert :face `(variable-pitch :foreground ,fg)
1316 "\nThis is "
1317 (emacs-version)
1318 "\n"
1319 :face '(variable-pitch :height 0.5)
1320 "Copyright (C) 2007 Free Software Foundation, Inc.")
1321 (and auto-save-list-file-prefix
1322 ;; Don't signal an error if the
1323 ;; directory for auto-save-list files
1324 ;; does not yet exist.
1325 (file-directory-p (file-name-directory
1326 auto-save-list-file-prefix))
1327 (directory-files
1328 (file-name-directory auto-save-list-file-prefix)
1329 nil
1330 (concat "\\`"
1331 (regexp-quote (file-name-nondirectory
1332 auto-save-list-file-prefix)))
1333 t)
1334 (fancy-splash-insert :face '(variable-pitch :foreground "red")
1335 "\n\nIf an Emacs session crashed recently, "
1336 "type "
1337 :face '(fixed-pitch :foreground "red")
1338 "Meta-x recover-session RET"
1339 :face '(variable-pitch :foreground "red")
1340 "\nto recover"
1341 " the files you were editing."))))
1342
1343 (defun fancy-splash-screens-1 (buffer)
1344 "Timer function displaying a splash screen."
1345 (when (> (float-time) fancy-splash-stop-time)
1346 (throw 'stop-splashing nil))
1347 (unless fancy-current-text
1348 (setq fancy-current-text fancy-splash-text))
1349 (let ((text (car fancy-current-text)))
1350 (set-buffer buffer)
1351 (erase-buffer)
1352 (if pure-space-overflow
1353 (insert "\
1354 Warning Warning!!! Pure space overflow !!!Warning Warning
1355 \(See the node Pure Storage in the Lisp manual for details.)\n"))
1356 (fancy-splash-head)
1357 (apply #'fancy-splash-insert text)
1358 (fancy-splash-tail)
1359 (unless (current-message)
1360 (message fancy-splash-help-echo))
1361 (set-buffer-modified-p nil)
1362 (goto-char (point-min))
1363 (force-mode-line-update)
1364 (setq fancy-current-text (cdr fancy-current-text))))
1365
1366
1367 (defun fancy-splash-default-action ()
1368 "Stop displaying the splash screen buffer.
1369 This is an internal function used to turn off the splash screen after
1370 the user caused an input event by hitting a key or clicking with the
1371 mouse."
1372 (interactive)
1373 (if (and (memq 'down (event-modifiers last-command-event))
1374 (eq (posn-window (event-start last-command-event))
1375 (selected-window)))
1376 ;; This is a mouse-down event in the spash screen window.
1377 ;; Ignore it and consume the corresponding mouse-up event.
1378 (read-event)
1379 (push last-command-event unread-command-events))
1380 (throw 'exit nil))
1381
1382 (defun fancy-splash-special-event-action ()
1383 "Save the last event and stop displaying the splash screen buffer.
1384 This is an internal function used to turn off the splash screen after
1385 the user caused an input event that is bound in `special-event-map'"
1386 (interactive)
1387 (setq fancy-splash-last-input-event last-input-event)
1388 (throw 'exit nil))
1389
1390
1391 (defun fancy-splash-screens (&optional hide-on-input)
1392 "Display fancy splash screens when Emacs starts."
1393 (if hide-on-input
1394 (let ((old-hourglass display-hourglass)
1395 (fancy-splash-outer-buffer (current-buffer))
1396 splash-buffer
1397 (old-minor-mode-map-alist minor-mode-map-alist)
1398 (old-emulation-mode-map-alists emulation-mode-map-alists)
1399 (old-special-event-map special-event-map)
1400 (frame (fancy-splash-frame))
1401 timer)
1402 (save-selected-window
1403 (select-frame frame)
1404 (switch-to-buffer " GNU Emacs")
1405 (make-local-variable 'cursor-type)
1406 (setq splash-buffer (current-buffer))
1407 (catch 'stop-splashing
1408 (unwind-protect
1409 (let ((map (make-sparse-keymap))
1410 (cursor-type nil))
1411 (use-local-map map)
1412 (define-key map [switch-frame] 'ignore)
1413 (define-key map [t] 'fancy-splash-default-action)
1414 (define-key map [mouse-movement] 'ignore)
1415 (define-key map [mode-line t] 'ignore)
1416 ;; Temporarily bind special events to
1417 ;; fancy-splash-special-event-action so as to stop
1418 ;; displaying splash screens with such events.
1419 ;; Otherwise, drag-n-drop into splash screens may
1420 ;; leave us in recursive editing with invisible
1421 ;; cursors for a while.
1422 (setq special-event-map (make-sparse-keymap))
1423 (map-keymap
1424 (lambda (key def)
1425 (define-key special-event-map (vector key)
1426 (if (eq def 'ignore)
1427 'ignore
1428 'fancy-splash-special-event-action)))
1429 old-special-event-map)
1430 (setq display-hourglass nil
1431 minor-mode-map-alist nil
1432 emulation-mode-map-alists nil
1433 buffer-undo-list t
1434 mode-line-format (propertize "---- %b %-"
1435 'face 'mode-line-buffer-id)
1436 fancy-splash-stop-time (+ (float-time)
1437 fancy-splash-max-time)
1438 timer (run-with-timer 0 fancy-splash-delay
1439 #'fancy-splash-screens-1
1440 splash-buffer))
1441 (message "%s" (startup-echo-area-message))
1442 (recursive-edit))
1443 (cancel-timer timer)
1444 (setq display-hourglass old-hourglass
1445 minor-mode-map-alist old-minor-mode-map-alist
1446 emulation-mode-map-alists old-emulation-mode-map-alists
1447 special-event-map old-special-event-map)
1448 (kill-buffer splash-buffer)
1449 (when fancy-splash-last-input-event
1450 (setq last-input-event fancy-splash-last-input-event
1451 fancy-splash-last-input-event nil)
1452 (command-execute (lookup-key special-event-map
1453 (vector last-input-event))
1454 nil (vector last-input-event) t))))))
1455 ;; If hide-on-input is nil, don't hide the buffer on input.
1456 (if (or (window-minibuffer-p)
1457 (window-dedicated-p (selected-window)))
1458 (pop-to-buffer (current-buffer))
1459 (switch-to-buffer "*About GNU Emacs*"))
1460 (setq buffer-read-only nil)
1461 (erase-buffer)
1462 (if pure-space-overflow
1463 (insert "\
1464 Warning Warning!!! Pure space overflow !!!Warning Warning
1465 \(See the node Pure Storage in the Lisp manual for details.)\n"))
1466 (let (fancy-splash-outer-buffer)
1467 (fancy-splash-head)
1468 (dolist (text fancy-splash-text)
1469 (apply #'fancy-splash-insert text)
1470 (insert "\n"))
1471 (skip-chars-backward "\n")
1472 (delete-region (point) (point-max))
1473 (insert "\n")
1474 (fancy-splash-tail)
1475 (set-buffer-modified-p nil)
1476 (setq buffer-read-only t)
1477 (if (and view-read-only (not view-mode))
1478 (view-mode-enter nil 'kill-buffer))
1479 (goto-char (point-min)))))
1480
1481 (defun fancy-splash-frame ()
1482 "Return the frame to use for the fancy splash screen.
1483 Returning non-nil does not mean we should necessarily
1484 use the fancy splash screen, but if we do use it,
1485 we put it on this frame."
1486 (let (chosen-frame)
1487 (dolist (frame (append (frame-list) (list (selected-frame))))
1488 (if (and (frame-visible-p frame)
1489 (not (window-minibuffer-p (frame-selected-window frame))))
1490 (setq chosen-frame frame)))
1491 chosen-frame))
1492
1493 (defun use-fancy-splash-screens-p ()
1494 "Return t if fancy splash screens should be used."
1495 (when (and (display-graphic-p)
1496 (or (and (display-color-p)
1497 (image-type-available-p 'xpm))
1498 (image-type-available-p 'pbm)))
1499 (let ((frame (fancy-splash-frame)))
1500 (when frame
1501 (let* ((img (create-image (or fancy-splash-image
1502 (if (and (display-color-p)
1503 (image-type-available-p 'xpm))
1504 "splash.xpm" "splash.pbm"))))
1505 (image-height (and img (cdr (image-size img nil frame))))
1506 ;; We test frame-height so that, if the frame is split
1507 ;; by displaying a warning, that doesn't cause the normal
1508 ;; splash screen to be used.
1509 (frame-height (1- (frame-height frame))))
1510 (> frame-height (+ image-height 19)))))))
1511
1512
1513 (defun normal-splash-screen (&optional hide-on-input)
1514 "Display splash screen when Emacs starts."
1515 (let ((prev-buffer (current-buffer)))
1516 (unwind-protect
1517 (with-current-buffer (get-buffer-create "GNU Emacs")
1518 (setq buffer-read-only nil)
1519 (erase-buffer)
1520 (set (make-local-variable 'tab-width) 8)
1521 (if hide-on-input
1522 (set (make-local-variable 'mode-line-format)
1523 (propertize "---- %b %-" 'face 'mode-line-buffer-id)))
1524
1525 (if pure-space-overflow
1526 (insert "\
1527 Warning Warning!!! Pure space overflow !!!Warning Warning
1528 \(See the node Pure Storage in the Lisp manual for details.)\n"))
1529
1530 ;; The convention for this piece of code is that
1531 ;; each piece of output starts with one or two newlines
1532 ;; and does not end with any newlines.
1533 (insert "Welcome to GNU Emacs")
1534 (insert
1535 (if (eq system-type 'gnu/linux)
1536 ", one component of the GNU/Linux operating system.\n"
1537 ", a part of the GNU operating system.\n"))
1538
1539 (if hide-on-input
1540 (insert (substitute-command-keys
1541 (concat
1542 "\nType \\[recenter] to begin editing"
1543 (if (equal (buffer-name prev-buffer) "*scratch*")
1544 ".\n"
1545 " your file.\n")))))
1546
1547 (if (display-mouse-p)
1548 ;; The user can use the mouse to activate menus
1549 ;; so give help in terms of menu items.
1550 (progn
1551 (insert "\
1552 You can do basic editing with the menu bar and scroll bar using the mouse.
1553 To quit a partially entered command, type Control-g.
1554
1555 Useful File menu items:
1556 Exit Emacs (or type Control-x followed by Control-c)
1557 Recover Crashed Session Recover files you were editing before a crash
1558
1559 Important Help menu items:
1560 Emacs Tutorial Learn how to use Emacs efficiently
1561 Emacs FAQ Frequently asked questions and answers
1562 Read the Emacs Manual View the Emacs manual using Info
1563 \(Non)Warranty GNU Emacs comes with ABSOLUTELY NO WARRANTY
1564 Copying Conditions Conditions for redistributing and changing Emacs
1565 Getting New Versions How to obtain the latest version of Emacs
1566 More Manuals / Ordering Manuals How to order printed manuals from the FSF
1567 ")
1568 (insert "\n\n" (emacs-version)
1569 "
1570 Copyright (C) 2007 Free Software Foundation, Inc."))
1571
1572 ;; No mouse menus, so give help using kbd commands.
1573
1574 ;; If keys have their default meanings,
1575 ;; use precomputed string to save lots of time.
1576 (if (and (eq (key-binding "\C-h") 'help-command)
1577 (eq (key-binding "\C-xu") 'advertised-undo)
1578 (eq (key-binding "\C-x\C-c") 'save-buffers-kill-emacs)
1579 (eq (key-binding "\C-ht") 'help-with-tutorial)
1580 (eq (key-binding "\C-hi") 'info)
1581 (eq (key-binding "\C-hr") 'info-emacs-manual)
1582 (eq (key-binding "\C-h\C-n") 'view-emacs-news))
1583 (insert "
1584 Get help C-h (Hold down CTRL and press h)
1585 Emacs manual C-h r
1586 Emacs tutorial C-h t Undo changes C-x u
1587 Buy manuals C-h C-m Exit Emacs C-x C-c
1588 Browse manuals C-h i")
1589
1590 (insert (substitute-command-keys
1591 (format "\n
1592 Get help %s
1593 Emacs manual \\[info-emacs-manual]
1594 Emacs tutorial \\[help-with-tutorial]\tUndo changes\t\\[advertised-undo]
1595 Buy manuals \\[view-order-manuals]\tExit Emacs\t\\[save-buffers-kill-emacs]
1596 Browse manuals \\[info]"
1597 (let ((where (where-is-internal
1598 'help-command nil t)))
1599 (if where
1600 (key-description where)
1601 "M-x help"))))))
1602
1603 ;; Say how to use the menu bar with the keyboard.
1604 (if (and (eq (key-binding "\M-`") 'tmm-menubar)
1605 (eq (key-binding [f10]) 'tmm-menubar))
1606 (insert "
1607 Activate menubar F10 or ESC ` or M-`")
1608 (insert (substitute-command-keys "
1609 Activate menubar \\[tmm-menubar]")))
1610
1611 ;; Many users seem to have problems with these.
1612 (insert "
1613 \(`C-' means use the CTRL key. `M-' means use the Meta (or Alt) key.
1614 If you have no Meta key, you may instead type ESC followed by the character.)")
1615
1616 (insert "\n\n" (emacs-version)
1617 "
1618 Copyright (C) 2007 Free Software Foundation, Inc.")
1619
1620 (if (and (eq (key-binding "\C-h\C-c") 'describe-copying)
1621 (eq (key-binding "\C-h\C-d") 'describe-distribution)
1622 (eq (key-binding "\C-h\C-w") 'describe-no-warranty))
1623 (insert
1624 "\n
1625 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type C-h C-w for full details.
1626 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
1627 of Emacs and modify it; type C-h C-c to see the conditions.
1628 Type C-h C-d for information on getting the latest version.")
1629 (insert (substitute-command-keys
1630 "\n
1631 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type \\[describe-no-warranty] for full details.
1632 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
1633 of Emacs and modify it; type \\[describe-copying] to see the conditions.
1634 Type \\[describe-distribution] for information on getting the latest version."))))
1635
1636 ;; The rest of the startup screen is the same on all
1637 ;; kinds of terminals.
1638
1639 ;; Give information on recovering, if there was a crash.
1640 (and auto-save-list-file-prefix
1641 ;; Don't signal an error if the
1642 ;; directory for auto-save-list files
1643 ;; does not yet exist.
1644 (file-directory-p (file-name-directory
1645 auto-save-list-file-prefix))
1646 (directory-files
1647 (file-name-directory auto-save-list-file-prefix)
1648 nil
1649 (concat "\\`"
1650 (regexp-quote (file-name-nondirectory
1651 auto-save-list-file-prefix)))
1652 t)
1653 (insert "\n\nIf an Emacs session crashed recently, "
1654 "type Meta-x recover-session RET\nto recover"
1655 " the files you were editing."))
1656
1657 ;; Display the input that we set up in the buffer.
1658 (set-buffer-modified-p nil)
1659 (setq buffer-read-only t)
1660 (if (and view-read-only (not view-mode))
1661 (view-mode-enter nil 'kill-buffer))
1662 (goto-char (point-min))
1663 (if hide-on-input
1664 (if (or (window-minibuffer-p)
1665 (window-dedicated-p (selected-window)))
1666 ;; If hide-on-input is nil, creating a new frame will
1667 ;; generate enough events that the subsequent `sit-for'
1668 ;; will immediately return anyway.
1669 nil ;; (pop-to-buffer (current-buffer))
1670 (save-window-excursion
1671 (switch-to-buffer (current-buffer))
1672 (sit-for 120)))
1673 (condition-case nil
1674 (switch-to-buffer (current-buffer))
1675 ;; In case the window is dedicated or something.
1676 (error (pop-to-buffer (current-buffer))))))
1677 ;; Unwind ... ensure splash buffer is killed
1678 (if hide-on-input
1679 (kill-buffer "GNU Emacs")
1680 (switch-to-buffer "GNU Emacs")
1681 (rename-buffer "*About GNU Emacs*" t)))))
1682
1683
1684 (defun startup-echo-area-message ()
1685 (if (eq (key-binding "\C-h\C-p") 'describe-project)
1686 "For information about the GNU Project and its goals, type C-h C-p."
1687 (substitute-command-keys
1688 "For information about the GNU Project and its goals, type \
1689 \\[describe-project].")))
1690
1691
1692 (defun display-startup-echo-area-message ()
1693 (let ((resize-mini-windows t))
1694 (message "%s" (startup-echo-area-message))))
1695
1696
1697 (defun display-splash-screen (&optional hide-on-input)
1698 "Display splash screen according to display.
1699 Fancy splash screens are used on graphic displays,
1700 normal otherwise.
1701 With a prefix argument, any user input hides the splash screen."
1702 (interactive "P")
1703 (if (use-fancy-splash-screens-p)
1704 (fancy-splash-screens hide-on-input)
1705 (normal-splash-screen hide-on-input)))
1706
1707
1708 (defun command-line-1 (command-line-args-left)
1709 (or noninteractive (input-pending-p) init-file-had-error
1710 ;; t if the init file says to inhibit the echo area startup message.
1711 (and inhibit-startup-echo-area-message
1712 user-init-file
1713 (or (and (get 'inhibit-startup-echo-area-message 'saved-value)
1714 (equal inhibit-startup-echo-area-message
1715 (if (equal init-file-user "")
1716 (user-login-name)
1717 init-file-user)))
1718 ;; Wasn't set with custom; see if .emacs has a setq.
1719 (let ((buffer (get-buffer-create " *temp*")))
1720 (prog1
1721 (condition-case nil
1722 (save-excursion
1723 (set-buffer buffer)
1724 (insert-file-contents user-init-file)
1725 (re-search-forward
1726 (concat
1727 "([ \t\n]*setq[ \t\n]+"
1728 "inhibit-startup-echo-area-message[ \t\n]+"
1729 (regexp-quote
1730 (prin1-to-string
1731 (if (equal init-file-user "")
1732 (user-login-name)
1733 init-file-user)))
1734 "[ \t\n]*)")
1735 nil t))
1736 (error nil))
1737 (kill-buffer buffer)))))
1738 ;; display-splash-screen at the end of command-line-1 calls
1739 ;; use-fancy-splash-screens-p. This can cause image.el to be
1740 ;; loaded, putting "Loading image... done" in the echo area.
1741 ;; This hides startup-echo-area-message. So
1742 ;; use-fancy-splash-screens-p is called here simply to get the
1743 ;; loading of image.el (if needed) out of the way before
1744 ;; display-startup-echo-area-message runs.
1745 (progn
1746 (use-fancy-splash-screens-p)
1747 (display-startup-echo-area-message)))
1748
1749 ;; Delay 2 seconds after an init file error message
1750 ;; was displayed, so user can read it.
1751 (when init-file-had-error
1752 (sit-for 2))
1753
1754 (when (and pure-space-overflow
1755 (not noninteractive))
1756 (display-warning
1757 'initialization
1758 "Building Emacs overflowed pure space. (See the node Pure Storage in the Lisp manual for details.)"
1759 :warning))
1760
1761 (when command-line-args-left
1762 ;; We have command args; process them.
1763 (let ((dir command-line-default-directory)
1764 (file-count 0)
1765 first-file-buffer
1766 tem
1767 ;; This approach loses for "-batch -L DIR --eval "(require foo)",
1768 ;; if foo is intended to be found in DIR.
1769 ;;
1770 ;; ;; The directories listed in --directory/-L options will *appear*
1771 ;; ;; at the front of `load-path' in the order they appear on the
1772 ;; ;; command-line. We cannot do this by *placing* them at the front
1773 ;; ;; in the order they appear, so we need this variable to hold them,
1774 ;; ;; temporarily.
1775 ;; extra-load-path
1776 ;;
1777 ;; To DTRT we keep track of the splice point and modify `load-path'
1778 ;; straight away upon any --directory/-L option.
1779 splice
1780 just-files ;; t if this follows the magic -- option.
1781 ;; This includes our standard options' long versions
1782 ;; and long versions of what's on command-switch-alist.
1783 (longopts
1784 (append '(("--funcall") ("--load") ("--insert") ("--kill")
1785 ("--directory") ("--eval") ("--execute") ("--no-splash")
1786 ("--find-file") ("--visit") ("--file") ("--no-desktop"))
1787 (mapcar (lambda (elt)
1788 (list (concat "-" (car elt))))
1789 command-switch-alist)))
1790 (line 0)
1791 (column 0))
1792
1793 ;; Add the long X options to longopts.
1794 (dolist (tem command-line-x-option-alist)
1795 (if (string-match "^--" (car tem))
1796 (push (list (car tem)) longopts)))
1797
1798 ;; Loop, processing options.
1799 (while command-line-args-left
1800 (let* ((argi (car command-line-args-left))
1801 (orig-argi argi)
1802 argval completion)
1803 (setq command-line-args-left (cdr command-line-args-left))
1804
1805 ;; Do preliminary decoding of the option.
1806 (if just-files
1807 ;; After --, don't look for options; treat all args as files.
1808 (setq argi "")
1809 ;; Convert long options to ordinary options
1810 ;; and separate out an attached option argument into argval.
1811 (when (string-match "^\\(--[^=]*\\)=" argi)
1812 (setq argval (substring argi (match-end 0))
1813 argi (match-string 1 argi)))
1814 (if (equal argi "--")
1815 (setq completion nil)
1816 (setq completion (try-completion argi longopts)))
1817 (if (eq completion t)
1818 (setq argi (substring argi 1))
1819 (if (stringp completion)
1820 (let ((elt (assoc completion longopts)))
1821 (or elt
1822 (error "Option `%s' is ambiguous" argi))
1823 (setq argi (substring (car elt) 1)))
1824 (setq argval nil
1825 argi orig-argi))))
1826
1827 ;; Execute the option.
1828 (cond ((setq tem (assoc argi command-switch-alist))
1829 (if argval
1830 (let ((command-line-args-left
1831 (cons argval command-line-args-left)))
1832 (funcall (cdr tem) argi))
1833 (funcall (cdr tem) argi)))
1834
1835 ((equal argi "-no-splash")
1836 (setq inhibit-startup-message t))
1837
1838 ((member argi '("-f" ; what the manual claims
1839 "-funcall"
1840 "-e")) ; what the source used to say
1841 (setq tem (intern (or argval (pop command-line-args-left))))
1842 (if (commandp tem)
1843 (command-execute tem)
1844 (funcall tem)))
1845
1846 ((member argi '("-eval" "-execute"))
1847 (eval (read (or argval (pop command-line-args-left)))))
1848
1849 ((member argi '("-L" "-directory"))
1850 (setq tem (expand-file-name
1851 (command-line-normalize-file-name
1852 (or argval (pop command-line-args-left)))))
1853 (cond (splice (setcdr splice (cons tem (cdr splice)))
1854 (setq splice (cdr splice)))
1855 (t (setq load-path (cons tem load-path)
1856 splice load-path))))
1857
1858 ((member argi '("-l" "-load"))
1859 (let* ((file (command-line-normalize-file-name
1860 (or argval (pop command-line-args-left))))
1861 ;; Take file from default dir if it exists there;
1862 ;; otherwise let `load' search for it.
1863 (file-ex (expand-file-name file)))
1864 (when (file-exists-p file-ex)
1865 (setq file file-ex))
1866 (load file nil t)))
1867
1868 ;; This is used to handle -script. It's not clear
1869 ;; we need to document it.
1870 ((member argi '("-scriptload"))
1871 (let* ((file (command-line-normalize-file-name
1872 (or argval (pop command-line-args-left))))
1873 ;; Take file from default dir.
1874 (file-ex (expand-file-name file)))
1875 (load file-ex nil t t)))
1876
1877 ((equal argi "-insert")
1878 (setq tem (or argval (pop command-line-args-left)))
1879 (or (stringp tem)
1880 (error "File name omitted from `-insert' option"))
1881 (insert-file-contents (command-line-normalize-file-name tem)))
1882
1883 ((equal argi "-kill")
1884 (kill-emacs t))
1885
1886 ;; This is for when they use --no-desktop with -q, or
1887 ;; don't load Desktop in their .emacs. If desktop.el
1888 ;; _is_ loaded, it will handle this switch, and we
1889 ;; won't see it by the time we get here.
1890 ((equal argi "-no-desktop")
1891 (message "\"--no-desktop\" ignored because the Desktop package is not loaded"))
1892
1893 ((string-match "^\\+[0-9]+\\'" argi)
1894 (setq line (string-to-number argi)))
1895
1896 ((string-match "^\\+\\([0-9]+\\):\\([0-9]+\\)\\'" argi)
1897 (setq line (string-to-number (match-string 1 argi))
1898 column (string-to-number (match-string 2 argi))))
1899
1900 ((setq tem (assoc argi command-line-x-option-alist))
1901 ;; Ignore X-windows options and their args if not using X.
1902 (setq command-line-args-left
1903 (nthcdr (nth 1 tem) command-line-args-left)))
1904
1905 ((member argi '("-find-file" "-file" "-visit"))
1906 ;; An explicit option to specify visiting a file.
1907 (setq tem (or argval (pop command-line-args-left)))
1908 (unless (stringp tem)
1909 (error "File name omitted from `%s' option" argi))
1910 (setq file-count (1+ file-count))
1911 (let ((file (expand-file-name
1912 (command-line-normalize-file-name tem) dir)))
1913 (if (= file-count 1)
1914 (setq first-file-buffer (find-file file))
1915 (find-file-other-window file)))
1916 (or (zerop line)
1917 (goto-line line))
1918 (setq line 0)
1919 (unless (< column 1)
1920 (move-to-column (1- column)))
1921 (setq column 0))
1922
1923 ((equal argi "--")
1924 (setq just-files t))
1925 (t
1926 ;; We have almost exhausted our options. See if the
1927 ;; user has made any other command-line options available
1928 (let ((hooks command-line-functions) ;; lrs 7/31/89
1929 (did-hook nil))
1930 (while (and hooks
1931 (not (setq did-hook (funcall (car hooks)))))
1932 (setq hooks (cdr hooks)))
1933 (if (not did-hook)
1934 ;; Presume that the argument is a file name.
1935 (progn
1936 (if (string-match "\\`-" argi)
1937 (error "Unknown option `%s'" argi))
1938 (setq file-count (1+ file-count))
1939 (let ((file
1940 (expand-file-name
1941 (command-line-normalize-file-name orig-argi)
1942 dir)))
1943 (if (= file-count 1)
1944 (setq first-file-buffer (find-file file))
1945 (find-file-other-window file)))
1946 (or (zerop line)
1947 (goto-line line))
1948 (setq line 0)
1949 (unless (< column 1)
1950 (move-to-column (1- column)))
1951 (setq column 0))))))
1952 ;; In unusual circumstances, the execution of Lisp code due
1953 ;; to command-line options can cause the last visible frame
1954 ;; to be deleted. In this case, kill emacs to avoid an
1955 ;; abort later.
1956 (unless (frame-live-p (selected-frame)) (kill-emacs nil))))
1957
1958 ;; If 3 or more files visited, and not all visible,
1959 ;; show user what they all are. But leave the last one current.
1960 (and (> file-count 2)
1961 (not noninteractive)
1962 (not inhibit-startup-buffer-menu)
1963 (or (get-buffer-window first-file-buffer)
1964 (list-buffers)))))
1965
1966 ;; Maybe display a startup screen.
1967 (unless (or inhibit-startup-message
1968 noninteractive
1969 emacs-quick-startup)
1970 ;; Display a startup screen, after some preparations.
1971
1972 ;; If there are no switches to process, we might as well
1973 ;; run this hook now, and there may be some need to do it
1974 ;; before doing any output.
1975 (run-hooks 'emacs-startup-hook)
1976 (and term-setup-hook
1977 (run-hooks 'term-setup-hook))
1978 (setq inhibit-startup-hooks t)
1979
1980 ;; It's important to notice the user settings before we
1981 ;; display the startup message; otherwise, the settings
1982 ;; won't take effect until the user gives the first
1983 ;; keystroke, and that's distracting.
1984 (when (fboundp 'frame-notice-user-settings)
1985 (frame-notice-user-settings))
1986
1987 ;; If there are no switches to process, we might as well
1988 ;; run this hook now, and there may be some need to do it
1989 ;; before doing any output.
1990 (when window-setup-hook
1991 (run-hooks 'window-setup-hook)
1992 ;; Don't let the hook be run twice.
1993 (setq window-setup-hook nil))
1994
1995 ;; Do this now to avoid an annoying delay if the user
1996 ;; clicks the menu bar during the sit-for.
1997 (when (display-popup-menus-p)
1998 (precompute-menubar-bindings))
1999 (with-no-warnings
2000 (setq menubar-bindings-done t))
2001
2002 ;; If *scratch* is selected and it is empty, insert an
2003 ;; initial message saying not to create a file there.
2004 (when (and initial-scratch-message
2005 (equal (buffer-name) "*scratch*")
2006 (= 0 (buffer-size)))
2007 (insert initial-scratch-message)
2008 (set-buffer-modified-p nil))
2009
2010 ;; If user typed input during all that work,
2011 ;; abort the startup screen. Otherwise, display it now.
2012 (unless (input-pending-p)
2013 (display-splash-screen t))))
2014
2015
2016 (defun command-line-normalize-file-name (file)
2017 "Collapse multiple slashes to one, to handle non-Emacs file names."
2018 (save-match-data
2019 ;; Use arg 1 so that we don't collapse // at the start of the file name.
2020 ;; That is significant on some systems.
2021 ;; However, /// at the beginning is supposed to mean just /, not //.
2022 (if (string-match "^///+" file)
2023 (setq file (replace-match "/" t t file)))
2024 (while (string-match "//+" file 1)
2025 (setq file (replace-match "/" t t file)))
2026 file))
2027
2028 ;; arch-tag: 7e294698-244d-4758-984b-4047f887a5db
2029 ;;; startup.el ends here