Comment.
[bpt/emacs.git] / lisp / startup.el
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 3, 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 (but NOT site-start.el), once
48 you are familiar 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-no-bitmap-icon)
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
791 ;; Register default TTY colors for the case the terminal hasn't a
792 ;; terminal init file.
793 (unless (memq window-system '(x w32 mac))
794 ;; We do this regardles of whether the terminal supports colors
795 ;; or not, since they can switch that support on or off in
796 ;; mid-session by setting the tty-color-mode frame parameter.
797 (tty-register-default-colors))
798
799 ;; Record whether the tool-bar is present before the user and site
800 ;; init files are processed. frame-notice-user-settings uses this
801 ;; to determine if the tool-bar has been disabled by the init files,
802 ;; and the frame needs to be resized.
803 (when (fboundp 'frame-notice-user-settings)
804 (let ((tool-bar-lines (or (assq 'tool-bar-lines initial-frame-alist)
805 (assq 'tool-bar-lines default-frame-alist))))
806 (setq tool-bar-originally-present
807 (and tool-bar-lines
808 (cdr tool-bar-lines)
809 (not (eq 0 (cdr tool-bar-lines)))))))
810
811 (let ((old-scalable-fonts-allowed scalable-fonts-allowed)
812 (old-font-list-limit font-list-limit)
813 (old-face-ignored-fonts face-ignored-fonts))
814
815 ;; Run the site-start library if it exists. The point of this file is
816 ;; that it is run before .emacs. There is no point in doing this after
817 ;; .emacs; that is useless.
818 ;; Note that user-init-file is nil at this point. Code that might
819 ;; be loaded from site-run-file and wants to test if -q was given
820 ;; should check init-file-user instead, since that is already set.
821 ;; See cus-edit.el for an example.
822 (if site-run-file
823 (load site-run-file t t))
824
825 ;; Sites should not disable this. Only individuals should disable
826 ;; the startup message.
827 (setq inhibit-startup-message nil)
828
829 ;; Warn for invalid user name.
830 (when init-file-user
831 (if (string-match "[~/:\n]" init-file-user)
832 (display-warning 'initialization
833 (format "Invalid user name %s"
834 init-file-user)
835 :error)
836 (if (file-directory-p (expand-file-name
837 ;; We don't support ~USER on MS-Windows except
838 ;; for the current user, and always load .emacs
839 ;; from the current user's home directory (see
840 ;; below). So always check "~", even if invoked
841 ;; with "-u USER", or if $USER or $LOGNAME are
842 ;; set to something different.
843 (if (eq system-type 'windows-nt)
844 "~"
845 (concat "~" init-file-user))))
846 nil
847 (display-warning 'initialization
848 (format "User %s has no home directory"
849 init-file-user)
850 :error))))
851
852 ;; Load that user's init file, or the default one, or none.
853 (let (debug-on-error-from-init-file
854 debug-on-error-should-be-set
855 (debug-on-error-initial
856 (if (eq init-file-debug t) 'startup init-file-debug))
857 (orig-enable-multibyte default-enable-multibyte-characters))
858 (let ((debug-on-error debug-on-error-initial)
859 ;; This function actually reads the init files.
860 (inner
861 (function
862 (lambda ()
863 (if init-file-user
864 (let ((user-init-file-1
865 (cond
866 ((eq system-type 'ms-dos)
867 (concat "~" init-file-user "/_emacs"))
868 ((eq system-type 'windows-nt)
869 ;; Prefer .emacs on Windows.
870 (if (directory-files "~" nil "^\\.emacs\\(\\.elc?\\)?$")
871 "~/.emacs"
872 ;; Also support _emacs for compatibility.
873 (if (directory-files "~" nil "^_emacs\\(\\.elc?\\)?$")
874 "~/_emacs"
875 ;; But default to .emacs if _emacs does not exist.
876 "~/.emacs")))
877 ((eq system-type 'vax-vms)
878 "sys$login:.emacs")
879 (t
880 (concat "~" init-file-user "/.emacs")))))
881 ;; This tells `load' to store the file name found
882 ;; into user-init-file.
883 (setq user-init-file t)
884 (load user-init-file-1 t t)
885
886 (when (eq user-init-file t)
887 ;; If we did not find ~/.emacs, try
888 ;; ~/.emacs.d/init.el.
889 (let ((otherfile
890 (expand-file-name
891 "init"
892 (file-name-as-directory
893 (concat "~" init-file-user "/.emacs.d")))))
894 (load otherfile t t)
895
896 ;; If we did not find the user's init file,
897 ;; set user-init-file conclusively.
898 ;; Don't let it be set from default.el.
899 (when (eq user-init-file t)
900 (setq user-init-file user-init-file-1))))
901
902 ;; If we loaded a compiled file, set
903 ;; `user-init-file' to the source version if that
904 ;; exists.
905 (when (and user-init-file
906 (equal (file-name-extension user-init-file)
907 "elc"))
908 (let* ((source (file-name-sans-extension user-init-file))
909 (alt (concat source ".el")))
910 (setq source (cond ((file-exists-p alt) alt)
911 ((file-exists-p source) source)
912 (t nil)))
913 (when source
914 (when (file-newer-than-file-p source user-init-file)
915 (message "Warning: %s is newer than %s"
916 source user-init-file)
917 (sit-for 1))
918 (setq user-init-file source))))
919
920 (unless inhibit-default-init
921 (let ((inhibit-startup-message nil))
922 ;; Users are supposed to be told their rights.
923 ;; (Plus how to get help and how to undo.)
924 ;; Don't you dare turn this off for anyone
925 ;; except yourself.
926 (load "default" t t)))))))))
927 (if init-file-debug
928 ;; Do this without a condition-case if the user wants to debug.
929 (funcall inner)
930 (condition-case error
931 (progn
932 (funcall inner)
933 (setq init-file-had-error nil))
934 (error
935 (let ((message-log-max nil))
936 (save-excursion
937 (set-buffer (get-buffer-create "*Messages*"))
938 (insert "\n\n"
939 (format "An error has occurred while loading `%s':\n\n"
940 user-init-file)
941 (format "%s%s%s"
942 (get (car error) 'error-message)
943 (if (cdr error) ": " "")
944 (mapconcat (lambda (s) (prin1-to-string s t)) (cdr error) ", "))
945 "\n\n"
946 "To ensure normal operation, you should investigate and remove the\n"
947 "cause of the error in your initialization file. Start Emacs with\n"
948 "the `--debug-init' option to view a complete error backtrace.\n\n"))
949 (message "Error in init file: %s%s%s"
950 (get (car error) 'error-message)
951 (if (cdr error) ": " "")
952 (mapconcat 'prin1-to-string (cdr error) ", "))
953 (let ((pop-up-windows nil))
954 (pop-to-buffer "*Messages*"))
955 (setq init-file-had-error t)))))
956
957 (if (and deactivate-mark transient-mark-mode)
958 (with-current-buffer (window-buffer)
959 (deactivate-mark)))
960
961 ;; If the user has a file of abbrevs, read it.
962 ;; FIXME: after the 22.0 release this should be changed so
963 ;; that it does not read the abbrev file when -batch is used
964 ;; on the command line.
965 (when (and (file-exists-p abbrev-file-name)
966 (file-readable-p abbrev-file-name))
967 (quietly-read-abbrev-file abbrev-file-name))
968
969 ;; If the abbrevs came entirely from the init file or the
970 ;; abbrevs file, they do not need saving.
971 (setq abbrevs-changed nil)
972
973 ;; If we can tell that the init file altered debug-on-error,
974 ;; arrange to preserve the value that it set up.
975 (or (eq debug-on-error debug-on-error-initial)
976 (setq debug-on-error-should-be-set t
977 debug-on-error-from-init-file debug-on-error)))
978 (if debug-on-error-should-be-set
979 (setq debug-on-error debug-on-error-from-init-file))
980 (unless (or default-enable-multibyte-characters
981 (eq orig-enable-multibyte default-enable-multibyte-characters))
982 ;; Init file changed to unibyte. Reset existing multibyte
983 ;; buffers (probably *scratch*, *Messages*, *Minibuff-0*).
984 ;; Arguably this should only be done if they're free of
985 ;; multibyte characters.
986 (mapcar (lambda (buffer)
987 (with-current-buffer buffer
988 (if enable-multibyte-characters
989 (set-buffer-multibyte nil))))
990 (buffer-list))
991 ;; Also re-set the language environment in case it was
992 ;; originally done before unibyte was set and is sensitive to
993 ;; unibyte (display table, terminal coding system &c).
994 (set-language-environment current-language-environment)))
995
996 ;; Do this here in case the init file sets mail-host-address.
997 (if (equal user-mail-address "")
998 (setq user-mail-address (or (getenv "EMAIL")
999 (concat (user-login-name) "@"
1000 (or mail-host-address
1001 (system-name))))))
1002
1003 ;; Originally face attributes were specified via
1004 ;; `font-lock-face-attributes'. Users then changed the default
1005 ;; face attributes by setting that variable. However, we try and
1006 ;; be back-compatible and respect its value if set except for
1007 ;; faces where M-x customize has been used to save changes for the
1008 ;; face.
1009 (when (boundp 'font-lock-face-attributes)
1010 (let ((face-attributes font-lock-face-attributes))
1011 (while face-attributes
1012 (let* ((face-attribute (pop face-attributes))
1013 (face (car face-attribute)))
1014 ;; Rustle up a `defface' SPEC from a
1015 ;; `font-lock-face-attributes' entry.
1016 (unless (get face 'saved-face)
1017 (let ((foreground (nth 1 face-attribute))
1018 (background (nth 2 face-attribute))
1019 (bold-p (nth 3 face-attribute))
1020 (italic-p (nth 4 face-attribute))
1021 (underline-p (nth 5 face-attribute))
1022 face-spec)
1023 (when foreground
1024 (setq face-spec (cons ':foreground (cons foreground face-spec))))
1025 (when background
1026 (setq face-spec (cons ':background (cons background face-spec))))
1027 (when bold-p
1028 (setq face-spec (append '(:weight bold) face-spec)))
1029 (when italic-p
1030 (setq face-spec (append '(:slant italic) face-spec)))
1031 (when underline-p
1032 (setq face-spec (append '(:underline t) face-spec)))
1033 (face-spec-set face (list (list t face-spec)) nil)))))))
1034
1035 ;; If parameter have been changed in the init file which influence
1036 ;; face realization, clear the face cache so that new faces will
1037 ;; be realized.
1038 (unless (and (eq scalable-fonts-allowed old-scalable-fonts-allowed)
1039 (eq font-list-limit old-font-list-limit)
1040 (eq face-ignored-fonts old-face-ignored-fonts))
1041 (clear-face-cache)))
1042
1043 (run-hooks 'after-init-hook)
1044
1045 ;; Decode all default-directory.
1046 (if (and default-enable-multibyte-characters locale-coding-system)
1047 (save-excursion
1048 (dolist (elt (buffer-list))
1049 (set-buffer elt)
1050 (if default-directory
1051 (setq default-directory
1052 (decode-coding-string default-directory
1053 locale-coding-system t))))
1054 (setq command-line-default-directory
1055 (decode-coding-string command-line-default-directory
1056 locale-coding-system t))))
1057
1058 ;; If *scratch* exists and init file didn't change its mode, initialize it.
1059 (if (get-buffer "*scratch*")
1060 (with-current-buffer "*scratch*"
1061 (if (eq major-mode 'fundamental-mode)
1062 (funcall initial-major-mode))))
1063
1064 ;; Load library for our terminal type.
1065 ;; User init file can set term-file-prefix to nil to prevent this.
1066 (unless (or noninteractive
1067 window-system
1068 (null term-file-prefix))
1069 (let* ((TERM (getenv "TERM"))
1070 (term TERM)
1071 hyphend)
1072 (while (and term
1073 (not (load (concat term-file-prefix term) t t)))
1074 ;; Strip off last hyphen and what follows, then try again
1075 (setq term
1076 (if (setq hyphend (string-match "[-_][^-_]+\\'" term))
1077 (substring term 0 hyphend)
1078 nil)))
1079 (setq term TERM)
1080 ;; The terminal file has been loaded, now call the terminal specific
1081 ;; initialization function.
1082 (while term
1083 (let ((term-init-func (intern-soft (concat "terminal-init-" term))))
1084 (if (not (fboundp term-init-func))
1085 ;; Strip off last hyphen and what follows, then try again
1086 (setq term
1087 (if (setq hyphend (string-match "[-_][^-_]+\\'" term))
1088 (substring term 0 hyphend)
1089 nil))
1090 (setq term nil)
1091 (funcall term-init-func))))))
1092
1093 ;; Update the out-of-memory error message based on user's key bindings
1094 ;; for save-some-buffers.
1095 (setq memory-signal-data
1096 (list 'error
1097 (substitute-command-keys "Memory exhausted--use \\[save-some-buffers] then exit and restart Emacs")))
1098
1099 ;; Process the remaining args.
1100 (command-line-1 (cdr command-line-args))
1101
1102 ;; If -batch, terminate after processing the command options.
1103 (if noninteractive (kill-emacs t))
1104
1105 ;; Run emacs-session-restore (session management) if started by
1106 ;; the session manager and we have a session manager connection.
1107 (if (and (boundp 'x-session-previous-id)
1108 (stringp x-session-previous-id))
1109 (with-no-warnings
1110 (emacs-session-restore x-session-previous-id))))
1111
1112 (defcustom initial-scratch-message (purecopy "\
1113 ;; This buffer is for notes you don't want to save, and for Lisp evaluation.
1114 ;; If you want to create a file, visit that file with C-x C-f,
1115 ;; then enter the text in that file's own buffer.
1116
1117 ")
1118 "Initial message displayed in *scratch* buffer at startup.
1119 If this is nil, no message will be displayed.
1120 If `inhibit-splash-screen' is non-nil, then no message is displayed,
1121 regardless of the value of this variable."
1122 :type '(choice (text :tag "Message")
1123 (const :tag "none" nil))
1124 :group 'initialization)
1125
1126 \f
1127 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1128 ;;; Fancy splash screen
1129 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1130
1131 (defvar fancy-splash-text
1132 '((:face (variable-pitch :weight bold)
1133 "Important Help menu items:\n"
1134 :face variable-pitch
1135 (lambda ()
1136 (let* ((en "TUTORIAL")
1137 (tut (or (get-language-info current-language-environment
1138 'tutorial)
1139 en))
1140 (title (with-temp-buffer
1141 (insert-file-contents
1142 (expand-file-name tut data-directory)
1143 nil 0 256)
1144 (search-forward ".")
1145 (buffer-substring (point-min) (1- (point))))))
1146 ;; If there is a specific tutorial for the current language
1147 ;; environment and it is not English, append its title.
1148 (concat
1149 "Emacs Tutorial\t\tLearn how to use Emacs efficiently"
1150 (if (string= en tut)
1151 ""
1152 (concat " (" title ")"))
1153 "\n")))
1154 :face variable-pitch "\
1155 Emacs FAQ\t\tFrequently asked questions and answers
1156 View Emacs Manual\t\tView the Emacs manual using Info
1157 Absence of Warranty\tGNU Emacs comes with "
1158 :face (variable-pitch :slant oblique)
1159 "ABSOLUTELY NO WARRANTY\n"
1160 :face variable-pitch
1161 "\
1162 Copying Conditions\t\tConditions for redistributing and changing Emacs
1163 Getting New Versions\tHow to obtain the latest version of Emacs
1164 More Manuals / Ordering Manuals Buying printed manuals from the FSF\n")
1165 (:face variable-pitch
1166 "\nTo quit a partially entered command, type "
1167 :face default
1168 "Control-g"
1169 :face variable-pitch
1170 ".
1171
1172 Emacs Guided Tour\t\tSee http://www.gnu.org/software/emacs/tour/
1173
1174 "
1175 :face (variable-pitch :weight bold)
1176 "Useful File menu items:\n"
1177 :face variable-pitch
1178 "Exit Emacs\t\t(Or type "
1179 :face default
1180 "Control-x"
1181 :face variable-pitch
1182 " followed by "
1183 :face default
1184 "Control-c"
1185 :face variable-pitch
1186 ")
1187 Recover Crashed Session\tRecover files you were editing before a crash\n"
1188 ))
1189 "A list of texts to show in the middle part of splash screens.
1190 Each element in the list should be a list of strings or pairs
1191 `:face FACE', like `fancy-splash-insert' accepts them.")
1192
1193
1194 (defgroup fancy-splash-screen ()
1195 "Fancy splash screen when Emacs starts."
1196 :version "21.1"
1197 :group 'initialization)
1198
1199
1200 (defcustom fancy-splash-delay 7
1201 "*Delay in seconds between splash screens."
1202 :group 'fancy-splash-screen
1203 :type 'integer)
1204
1205
1206 (defcustom fancy-splash-max-time 30
1207 "*Show splash screens for at most this number of seconds.
1208 Values less than twice `fancy-splash-delay' are ignored."
1209 :group 'fancy-splash-screen
1210 :type 'integer)
1211
1212
1213 (defcustom fancy-splash-image nil
1214 "*The image to show in the splash screens, or nil for defaults."
1215 :group 'fancy-splash-screen
1216 :type '(choice (const :tag "Default" nil)
1217 (file :tag "File")))
1218
1219
1220 ;; These are temporary storage areas for the splash screen display.
1221
1222 (defvar fancy-current-text nil)
1223 (defvar fancy-splash-help-echo nil)
1224 (defvar fancy-splash-stop-time nil)
1225 (defvar fancy-splash-outer-buffer nil)
1226 (defvar fancy-splash-last-input-event nil)
1227
1228 (defun fancy-splash-insert (&rest args)
1229 "Insert text into the current buffer, with faces.
1230 Arguments from ARGS should be either strings, functions called
1231 with no args that return a string, or pairs `:face FACE',
1232 where FACE is a valid face specification, as it can be used with
1233 `put-text-property'."
1234 (let ((current-face nil))
1235 (while args
1236 (if (eq (car args) :face)
1237 (setq args (cdr args) current-face (car args))
1238 (insert (propertize (let ((it (car args)))
1239 (if (functionp it)
1240 (funcall it)
1241 it))
1242 'face current-face
1243 'help-echo fancy-splash-help-echo)))
1244 (setq args (cdr args)))))
1245
1246
1247 (defun fancy-splash-head ()
1248 "Insert the head part of the splash screen into the current buffer."
1249 (let* ((image-file (cond ((stringp fancy-splash-image)
1250 fancy-splash-image)
1251 ((and (display-color-p)
1252 (image-type-available-p 'xpm))
1253 (if (and (fboundp 'x-display-planes)
1254 (= (funcall 'x-display-planes) 8))
1255 "splash8.xpm"
1256 "splash.xpm"))
1257 (t "splash.pbm")))
1258 (img (create-image image-file))
1259 (image-width (and img (car (image-size img))))
1260 (window-width (window-width (selected-window))))
1261 (when img
1262 (when (> window-width image-width)
1263 ;; Center the image in the window.
1264 (insert (propertize " " 'display
1265 `(space :align-to (+ center (-0.5 . ,img)))))
1266
1267 ;; Change the color of the XPM version of the splash image
1268 ;; so that it is visible with a dark frame background.
1269 (when (and (memq 'xpm img)
1270 (eq (frame-parameter nil 'background-mode) 'dark))
1271 (setq img (append img '(:color-symbols (("#000000" . "gray30"))))))
1272
1273 ;; Insert the image with a help-echo and a keymap.
1274 (let ((map (make-sparse-keymap))
1275 (help-echo "mouse-2: browse http://www.gnu.org/"))
1276 (define-key map [mouse-2]
1277 (lambda ()
1278 (interactive)
1279 (browse-url "http://www.gnu.org/")
1280 (throw 'exit nil)))
1281 (define-key map [down-mouse-2] 'ignore)
1282 (define-key map [up-mouse-2] 'ignore)
1283 (insert-image img (propertize "xxx" 'help-echo help-echo
1284 'keymap map)))
1285 (insert "\n"))))
1286 (fancy-splash-insert
1287 :face '(variable-pitch :foreground "red")
1288 (if (eq system-type 'gnu/linux)
1289 "GNU Emacs is one component of the GNU/Linux operating system."
1290 "GNU Emacs is one component of the GNU operating system."))
1291 (insert "\n")
1292 (fancy-splash-insert
1293 :face 'variable-pitch
1294 "You can do basic editing with the menu bar and scroll bar \
1295 using the mouse.\n\n")
1296 (when fancy-splash-outer-buffer
1297 (fancy-splash-insert
1298 :face 'variable-pitch
1299 "Type "
1300 :face 'default
1301 "Control-l"
1302 :face 'variable-pitch
1303 " to begin editing"
1304 (if (equal (buffer-name fancy-splash-outer-buffer)
1305 "*scratch*")
1306 ".\n"
1307 " your file.\n"))))
1308
1309 (defun fancy-splash-tail ()
1310 "Insert the tail part of the splash screen into the current buffer."
1311 (let ((fg (if (eq (frame-parameter nil 'background-mode) 'dark)
1312 "cyan" "darkblue")))
1313 (fancy-splash-insert :face `(variable-pitch :foreground ,fg)
1314 "\nThis is "
1315 (emacs-version)
1316 "\n"
1317 :face '(variable-pitch :height 0.5)
1318 "Copyright (C) 2007 Free Software Foundation, Inc.")
1319 (and auto-save-list-file-prefix
1320 ;; Don't signal an error if the
1321 ;; directory for auto-save-list files
1322 ;; does not yet exist.
1323 (file-directory-p (file-name-directory
1324 auto-save-list-file-prefix))
1325 (directory-files
1326 (file-name-directory auto-save-list-file-prefix)
1327 nil
1328 (concat "\\`"
1329 (regexp-quote (file-name-nondirectory
1330 auto-save-list-file-prefix)))
1331 t)
1332 (fancy-splash-insert :face '(variable-pitch :foreground "red")
1333 "\n\nIf an Emacs session crashed recently, "
1334 "type "
1335 :face '(fixed-pitch :foreground "red")
1336 "Meta-x recover-session RET"
1337 :face '(variable-pitch :foreground "red")
1338 "\nto recover"
1339 " the files you were editing."))))
1340
1341 (defun fancy-splash-screens-1 (buffer)
1342 "Timer function displaying a splash screen."
1343 (when (> (float-time) fancy-splash-stop-time)
1344 (throw 'stop-splashing nil))
1345 (unless fancy-current-text
1346 (setq fancy-current-text fancy-splash-text))
1347 (let ((text (car fancy-current-text)))
1348 (set-buffer buffer)
1349 (erase-buffer)
1350 (if pure-space-overflow
1351 (insert "\
1352 Warning Warning!!! Pure space overflow !!!Warning Warning
1353 \(See the node Pure Storage in the Lisp manual for details.)\n"))
1354 (fancy-splash-head)
1355 (apply #'fancy-splash-insert text)
1356 (fancy-splash-tail)
1357 (unless (current-message)
1358 (message fancy-splash-help-echo))
1359 (set-buffer-modified-p nil)
1360 (goto-char (point-min))
1361 (force-mode-line-update)
1362 (setq fancy-current-text (cdr fancy-current-text))))
1363
1364
1365 (defun fancy-splash-default-action ()
1366 "Stop displaying the splash screen buffer.
1367 This is an internal function used to turn off the splash screen after
1368 the user caused an input event by hitting a key or clicking with the
1369 mouse."
1370 (interactive)
1371 (if (and (memq 'down (event-modifiers last-command-event))
1372 (eq (posn-window (event-start last-command-event))
1373 (selected-window)))
1374 ;; This is a mouse-down event in the spash screen window.
1375 ;; Ignore it and consume the corresponding mouse-up event.
1376 (read-event)
1377 (push last-command-event unread-command-events))
1378 (throw 'exit nil))
1379
1380 (defun fancy-splash-special-event-action ()
1381 "Save the last event and stop displaying the splash screen buffer.
1382 This is an internal function used to turn off the splash screen after
1383 the user caused an input event that is bound in `special-event-map'"
1384 (interactive)
1385 (setq fancy-splash-last-input-event last-input-event)
1386 (throw 'exit nil))
1387
1388
1389 (defun fancy-splash-screens (&optional hide-on-input)
1390 "Display fancy splash screens when Emacs starts."
1391 (if hide-on-input
1392 (let ((old-hourglass display-hourglass)
1393 (fancy-splash-outer-buffer (current-buffer))
1394 splash-buffer
1395 (old-minor-mode-map-alist minor-mode-map-alist)
1396 (old-emulation-mode-map-alists emulation-mode-map-alists)
1397 (old-special-event-map special-event-map)
1398 (frame (fancy-splash-frame))
1399 timer)
1400 (save-selected-window
1401 (select-frame frame)
1402 (switch-to-buffer " GNU Emacs")
1403 (make-local-variable 'cursor-type)
1404 (setq splash-buffer (current-buffer))
1405 (catch 'stop-splashing
1406 (unwind-protect
1407 (let ((map (make-sparse-keymap))
1408 (cursor-type nil))
1409 (use-local-map map)
1410 (define-key map [switch-frame] 'ignore)
1411 (define-key map [t] 'fancy-splash-default-action)
1412 (define-key map [mouse-movement] 'ignore)
1413 (define-key map [mode-line t] 'ignore)
1414 ;; Temporarily bind special events to
1415 ;; fancy-splash-special-event-action so as to stop
1416 ;; displaying splash screens with such events.
1417 ;; Otherwise, drag-n-drop into splash screens may
1418 ;; leave us in recursive editing with invisible
1419 ;; cursors for a while.
1420 (setq special-event-map (make-sparse-keymap))
1421 (map-keymap
1422 (lambda (key def)
1423 (define-key special-event-map (vector key)
1424 (if (eq def 'ignore)
1425 'ignore
1426 'fancy-splash-special-event-action)))
1427 old-special-event-map)
1428 (setq display-hourglass nil
1429 minor-mode-map-alist nil
1430 emulation-mode-map-alists nil
1431 buffer-undo-list t
1432 mode-line-format (propertize "---- %b %-"
1433 'face 'mode-line-buffer-id)
1434 fancy-splash-stop-time (+ (float-time)
1435 fancy-splash-max-time)
1436 timer (run-with-timer 0 fancy-splash-delay
1437 #'fancy-splash-screens-1
1438 splash-buffer))
1439 (message "%s" (startup-echo-area-message))
1440 (recursive-edit))
1441 (cancel-timer timer)
1442 (setq display-hourglass old-hourglass
1443 minor-mode-map-alist old-minor-mode-map-alist
1444 emulation-mode-map-alists old-emulation-mode-map-alists
1445 special-event-map old-special-event-map)
1446 (kill-buffer splash-buffer)
1447 (when fancy-splash-last-input-event
1448 (setq last-input-event fancy-splash-last-input-event
1449 fancy-splash-last-input-event nil)
1450 (command-execute (lookup-key special-event-map
1451 (vector last-input-event))
1452 nil (vector last-input-event) t))))))
1453 ;; If hide-on-input is nil, don't hide the buffer on input.
1454 (if (or (window-minibuffer-p)
1455 (window-dedicated-p (selected-window)))
1456 (pop-to-buffer (current-buffer))
1457 (switch-to-buffer "*About GNU Emacs*"))
1458 (setq buffer-read-only nil)
1459 (erase-buffer)
1460 (if pure-space-overflow
1461 (insert "\
1462 Warning Warning!!! Pure space overflow !!!Warning Warning
1463 \(See the node Pure Storage in the Lisp manual for details.)\n"))
1464 (let (fancy-splash-outer-buffer)
1465 (fancy-splash-head)
1466 (dolist (text fancy-splash-text)
1467 (apply #'fancy-splash-insert text)
1468 (insert "\n"))
1469 (skip-chars-backward "\n")
1470 (delete-region (point) (point-max))
1471 (insert "\n")
1472 (fancy-splash-tail)
1473 (set-buffer-modified-p nil)
1474 (setq buffer-read-only t)
1475 (if (and view-read-only (not view-mode))
1476 (view-mode-enter nil 'kill-buffer))
1477 (goto-char (point-min)))))
1478
1479 (defun fancy-splash-frame ()
1480 "Return the frame to use for the fancy splash screen.
1481 Returning non-nil does not mean we should necessarily
1482 use the fancy splash screen, but if we do use it,
1483 we put it on this frame."
1484 (let (chosen-frame)
1485 (dolist (frame (append (frame-list) (list (selected-frame))))
1486 (if (and (frame-visible-p frame)
1487 (not (window-minibuffer-p (frame-selected-window frame))))
1488 (setq chosen-frame frame)))
1489 chosen-frame))
1490
1491 (defun use-fancy-splash-screens-p ()
1492 "Return t if fancy splash screens should be used."
1493 (when (and (display-graphic-p)
1494 (or (and (display-color-p)
1495 (image-type-available-p 'xpm))
1496 (image-type-available-p 'pbm)))
1497 (let ((frame (fancy-splash-frame)))
1498 (when frame
1499 (let* ((img (create-image (or fancy-splash-image
1500 (if (and (display-color-p)
1501 (image-type-available-p 'xpm))
1502 "splash.xpm" "splash.pbm"))))
1503 (image-height (and img (cdr (image-size img nil frame))))
1504 ;; We test frame-height so that, if the frame is split
1505 ;; by displaying a warning, that doesn't cause the normal
1506 ;; splash screen to be used.
1507 (frame-height (1- (frame-height frame))))
1508 (> frame-height (+ image-height 19)))))))
1509
1510
1511 (defun normal-splash-screen (&optional hide-on-input)
1512 "Display splash screen when Emacs starts."
1513 (let ((prev-buffer (current-buffer)))
1514 (unwind-protect
1515 (with-current-buffer (get-buffer-create "GNU Emacs")
1516 (setq buffer-read-only nil)
1517 (erase-buffer)
1518 (set (make-local-variable 'tab-width) 8)
1519 (if hide-on-input
1520 (set (make-local-variable 'mode-line-format)
1521 (propertize "---- %b %-" 'face 'mode-line-buffer-id)))
1522
1523 (if pure-space-overflow
1524 (insert "\
1525 Warning Warning!!! Pure space overflow !!!Warning Warning
1526 \(See the node Pure Storage in the Lisp manual for details.)\n"))
1527
1528 ;; The convention for this piece of code is that
1529 ;; each piece of output starts with one or two newlines
1530 ;; and does not end with any newlines.
1531 (insert "Welcome to GNU Emacs")
1532 (insert
1533 (if (eq system-type 'gnu/linux)
1534 ", one component of the GNU/Linux operating system.\n"
1535 ", a part of the GNU operating system.\n"))
1536
1537 (if hide-on-input
1538 (insert (substitute-command-keys
1539 (concat
1540 "\nType \\[recenter] to begin editing"
1541 (if (equal (buffer-name prev-buffer) "*scratch*")
1542 ".\n"
1543 " your file.\n")))))
1544
1545 (if (display-mouse-p)
1546 ;; The user can use the mouse to activate menus
1547 ;; so give help in terms of menu items.
1548 (progn
1549 (insert "\
1550 You can do basic editing with the menu bar and scroll bar using the mouse.
1551 To quit a partially entered command, type Control-g.
1552
1553 Useful File menu items:
1554 Exit Emacs (or type Control-x followed by Control-c)
1555 Recover Crashed Session Recover files you were editing before a crash
1556
1557 Important Help menu items:
1558 Emacs Tutorial Learn how to use Emacs efficiently
1559 Emacs FAQ Frequently asked questions and answers
1560 Read the Emacs Manual View the Emacs manual using Info
1561 \(Non)Warranty GNU Emacs comes with ABSOLUTELY NO WARRANTY
1562 Copying Conditions Conditions for redistributing and changing Emacs
1563 Getting New Versions How to obtain the latest version of Emacs
1564 More Manuals / Ordering Manuals How to order printed manuals from the FSF
1565 ")
1566 (insert "\n\n" (emacs-version)
1567 "
1568 Copyright (C) 2007 Free Software Foundation, Inc."))
1569
1570 ;; No mouse menus, so give help using kbd commands.
1571
1572 ;; If keys have their default meanings,
1573 ;; use precomputed string to save lots of time.
1574 (if (and (eq (key-binding "\C-h") 'help-command)
1575 (eq (key-binding "\C-xu") 'advertised-undo)
1576 (eq (key-binding "\C-x\C-c") 'save-buffers-kill-emacs)
1577 (eq (key-binding "\C-ht") 'help-with-tutorial)
1578 (eq (key-binding "\C-hi") 'info)
1579 (eq (key-binding "\C-hr") 'info-emacs-manual)
1580 (eq (key-binding "\C-h\C-n") 'view-emacs-news))
1581 (insert "
1582 Get help C-h (Hold down CTRL and press h)
1583 Emacs manual C-h r
1584 Emacs tutorial C-h t Undo changes C-x u
1585 Buy manuals C-h C-m Exit Emacs C-x C-c
1586 Browse manuals C-h i")
1587
1588 (insert (substitute-command-keys
1589 (format "\n
1590 Get help %s
1591 Emacs manual \\[info-emacs-manual]
1592 Emacs tutorial \\[help-with-tutorial]\tUndo changes\t\\[advertised-undo]
1593 Buy manuals \\[view-order-manuals]\tExit Emacs\t\\[save-buffers-kill-emacs]
1594 Browse manuals \\[info]"
1595 (let ((where (where-is-internal
1596 'help-command nil t)))
1597 (if where
1598 (key-description where)
1599 "M-x help"))))))
1600
1601 ;; Say how to use the menu bar with the keyboard.
1602 (if (and (eq (key-binding "\M-`") 'tmm-menubar)
1603 (eq (key-binding [f10]) 'tmm-menubar))
1604 (insert "
1605 Activate menubar F10 or ESC ` or M-`")
1606 (insert (substitute-command-keys "
1607 Activate menubar \\[tmm-menubar]")))
1608
1609 ;; Many users seem to have problems with these.
1610 (insert "
1611 \(`C-' means use the CTRL key. `M-' means use the Meta (or Alt) key.
1612 If you have no Meta key, you may instead type ESC followed by the character.)")
1613
1614 (insert "\n\n" (emacs-version)
1615 "
1616 Copyright (C) 2007 Free Software Foundation, Inc.")
1617
1618 (if (and (eq (key-binding "\C-h\C-c") 'describe-copying)
1619 (eq (key-binding "\C-h\C-d") 'describe-distribution)
1620 (eq (key-binding "\C-h\C-w") 'describe-no-warranty))
1621 (insert
1622 "\n
1623 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type C-h C-w for full details.
1624 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
1625 of Emacs and modify it; type C-h C-c to see the conditions.
1626 Type C-h C-d for information on getting the latest version.")
1627 (insert (substitute-command-keys
1628 "\n
1629 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type \\[describe-no-warranty] for full details.
1630 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
1631 of Emacs and modify it; type \\[describe-copying] to see the conditions.
1632 Type \\[describe-distribution] for information on getting the latest version."))))
1633
1634 ;; The rest of the startup screen is the same on all
1635 ;; kinds of terminals.
1636
1637 ;; Give information on recovering, if there was a crash.
1638 (and auto-save-list-file-prefix
1639 ;; Don't signal an error if the
1640 ;; directory for auto-save-list files
1641 ;; does not yet exist.
1642 (file-directory-p (file-name-directory
1643 auto-save-list-file-prefix))
1644 (directory-files
1645 (file-name-directory auto-save-list-file-prefix)
1646 nil
1647 (concat "\\`"
1648 (regexp-quote (file-name-nondirectory
1649 auto-save-list-file-prefix)))
1650 t)
1651 (insert "\n\nIf an Emacs session crashed recently, "
1652 "type Meta-x recover-session RET\nto recover"
1653 " the files you were editing."))
1654
1655 ;; Display the input that we set up in the buffer.
1656 (set-buffer-modified-p nil)
1657 (setq buffer-read-only t)
1658 (if (and view-read-only (not view-mode))
1659 (view-mode-enter nil 'kill-buffer))
1660 (goto-char (point-min))
1661 (if hide-on-input
1662 (if (or (window-minibuffer-p)
1663 (window-dedicated-p (selected-window)))
1664 ;; If hide-on-input is nil, creating a new frame will
1665 ;; generate enough events that the subsequent `sit-for'
1666 ;; will immediately return anyway.
1667 nil ;; (pop-to-buffer (current-buffer))
1668 (save-window-excursion
1669 (switch-to-buffer (current-buffer))
1670 (sit-for 120)))
1671 (condition-case nil
1672 (switch-to-buffer (current-buffer))
1673 ;; In case the window is dedicated or something.
1674 (error (pop-to-buffer (current-buffer))))))
1675 ;; Unwind ... ensure splash buffer is killed
1676 (if hide-on-input
1677 (kill-buffer "GNU Emacs")
1678 (switch-to-buffer "GNU Emacs")
1679 (rename-buffer "*About GNU Emacs*" t)))))
1680
1681
1682 (defun startup-echo-area-message ()
1683 (if (eq (key-binding "\C-h\C-p") 'describe-project)
1684 "For information about the GNU system and GNU/Linux, type C-h C-p."
1685 (substitute-command-keys
1686 "For information about the GNU system and GNU/Linux, type \
1687 \\[describe-project].")))
1688
1689
1690 (defun display-startup-echo-area-message ()
1691 (let ((resize-mini-windows t))
1692 (message "%s" (startup-echo-area-message))))
1693
1694
1695 (defun display-splash-screen (&optional hide-on-input)
1696 "Display splash screen according to display.
1697 Fancy splash screens are used on graphic displays,
1698 normal otherwise.
1699 With a prefix argument, any user input hides the splash screen."
1700 (interactive "P")
1701 (if (use-fancy-splash-screens-p)
1702 (fancy-splash-screens hide-on-input)
1703 (normal-splash-screen hide-on-input)))
1704
1705
1706 (defun command-line-1 (command-line-args-left)
1707 (or noninteractive (input-pending-p) init-file-had-error
1708 ;; t if the init file says to inhibit the echo area startup message.
1709 (and inhibit-startup-echo-area-message
1710 user-init-file
1711 (or (and (get 'inhibit-startup-echo-area-message 'saved-value)
1712 (equal inhibit-startup-echo-area-message
1713 (if (equal init-file-user "")
1714 (user-login-name)
1715 init-file-user)))
1716 ;; Wasn't set with custom; see if .emacs has a setq.
1717 (let ((buffer (get-buffer-create " *temp*")))
1718 (prog1
1719 (condition-case nil
1720 (save-excursion
1721 (set-buffer buffer)
1722 (insert-file-contents user-init-file)
1723 (re-search-forward
1724 (concat
1725 "([ \t\n]*setq[ \t\n]+"
1726 "inhibit-startup-echo-area-message[ \t\n]+"
1727 (regexp-quote
1728 (prin1-to-string
1729 (if (equal init-file-user "")
1730 (user-login-name)
1731 init-file-user)))
1732 "[ \t\n]*)")
1733 nil t))
1734 (error nil))
1735 (kill-buffer buffer)))))
1736 ;; display-splash-screen at the end of command-line-1 calls
1737 ;; use-fancy-splash-screens-p. This can cause image.el to be
1738 ;; loaded, putting "Loading image... done" in the echo area.
1739 ;; This hides startup-echo-area-message. So
1740 ;; use-fancy-splash-screens-p is called here simply to get the
1741 ;; loading of image.el (if needed) out of the way before
1742 ;; display-startup-echo-area-message runs.
1743 (progn
1744 (use-fancy-splash-screens-p)
1745 (display-startup-echo-area-message)))
1746
1747 ;; Delay 2 seconds after an init file error message
1748 ;; was displayed, so user can read it.
1749 (when init-file-had-error
1750 (sit-for 2))
1751
1752 (when (and pure-space-overflow
1753 (not noninteractive))
1754 (display-warning
1755 'initialization
1756 "Building Emacs overflowed pure space. (See the node Pure Storage in the Lisp manual for details.)"
1757 :warning))
1758
1759 (when command-line-args-left
1760 ;; We have command args; process them.
1761 (let ((dir command-line-default-directory)
1762 (file-count 0)
1763 first-file-buffer
1764 tem
1765 ;; This approach loses for "-batch -L DIR --eval "(require foo)",
1766 ;; if foo is intended to be found in DIR.
1767 ;;
1768 ;; ;; The directories listed in --directory/-L options will *appear*
1769 ;; ;; at the front of `load-path' in the order they appear on the
1770 ;; ;; command-line. We cannot do this by *placing* them at the front
1771 ;; ;; in the order they appear, so we need this variable to hold them,
1772 ;; ;; temporarily.
1773 ;; extra-load-path
1774 ;;
1775 ;; To DTRT we keep track of the splice point and modify `load-path'
1776 ;; straight away upon any --directory/-L option.
1777 splice
1778 just-files ;; t if this follows the magic -- option.
1779 ;; This includes our standard options' long versions
1780 ;; and long versions of what's on command-switch-alist.
1781 (longopts
1782 (append '(("--funcall") ("--load") ("--insert") ("--kill")
1783 ("--directory") ("--eval") ("--execute") ("--no-splash")
1784 ("--find-file") ("--visit") ("--file") ("--no-desktop"))
1785 (mapcar (lambda (elt)
1786 (list (concat "-" (car elt))))
1787 command-switch-alist)))
1788 (line 0)
1789 (column 0))
1790
1791 ;; Add the long X options to longopts.
1792 (dolist (tem command-line-x-option-alist)
1793 (if (string-match "^--" (car tem))
1794 (push (list (car tem)) longopts)))
1795
1796 ;; Loop, processing options.
1797 (while command-line-args-left
1798 (let* ((argi (car command-line-args-left))
1799 (orig-argi argi)
1800 argval completion)
1801 (setq command-line-args-left (cdr command-line-args-left))
1802
1803 ;; Do preliminary decoding of the option.
1804 (if just-files
1805 ;; After --, don't look for options; treat all args as files.
1806 (setq argi "")
1807 ;; Convert long options to ordinary options
1808 ;; and separate out an attached option argument into argval.
1809 (when (string-match "^\\(--[^=]*\\)=" argi)
1810 (setq argval (substring argi (match-end 0))
1811 argi (match-string 1 argi)))
1812 (if (equal argi "--")
1813 (setq completion nil)
1814 (setq completion (try-completion argi longopts)))
1815 (if (eq completion t)
1816 (setq argi (substring argi 1))
1817 (if (stringp completion)
1818 (let ((elt (assoc completion longopts)))
1819 (or elt
1820 (error "Option `%s' is ambiguous" argi))
1821 (setq argi (substring (car elt) 1)))
1822 (setq argval nil
1823 argi orig-argi))))
1824
1825 ;; Execute the option.
1826 (cond ((setq tem (assoc argi command-switch-alist))
1827 (if argval
1828 (let ((command-line-args-left
1829 (cons argval command-line-args-left)))
1830 (funcall (cdr tem) argi))
1831 (funcall (cdr tem) argi)))
1832
1833 ((equal argi "-no-splash")
1834 (setq inhibit-startup-message t))
1835
1836 ((member argi '("-f" ; what the manual claims
1837 "-funcall"
1838 "-e")) ; what the source used to say
1839 (setq tem (intern (or argval (pop command-line-args-left))))
1840 (if (commandp tem)
1841 (command-execute tem)
1842 (funcall tem)))
1843
1844 ((member argi '("-eval" "-execute"))
1845 (eval (read (or argval (pop command-line-args-left)))))
1846
1847 ((member argi '("-L" "-directory"))
1848 (setq tem (expand-file-name
1849 (command-line-normalize-file-name
1850 (or argval (pop command-line-args-left)))))
1851 (cond (splice (setcdr splice (cons tem (cdr splice)))
1852 (setq splice (cdr splice)))
1853 (t (setq load-path (cons tem load-path)
1854 splice load-path))))
1855
1856 ((member argi '("-l" "-load"))
1857 (let* ((file (command-line-normalize-file-name
1858 (or argval (pop command-line-args-left))))
1859 ;; Take file from default dir if it exists there;
1860 ;; otherwise let `load' search for it.
1861 (file-ex (expand-file-name file)))
1862 (when (file-exists-p file-ex)
1863 (setq file file-ex))
1864 (load file nil t)))
1865
1866 ;; This is used to handle -script. It's not clear
1867 ;; we need to document it.
1868 ((member argi '("-scriptload"))
1869 (let* ((file (command-line-normalize-file-name
1870 (or argval (pop command-line-args-left))))
1871 ;; Take file from default dir.
1872 (file-ex (expand-file-name file)))
1873 (load file-ex nil t t)))
1874
1875 ((equal argi "-insert")
1876 (setq tem (or argval (pop command-line-args-left)))
1877 (or (stringp tem)
1878 (error "File name omitted from `-insert' option"))
1879 (insert-file-contents (command-line-normalize-file-name tem)))
1880
1881 ((equal argi "-kill")
1882 (kill-emacs t))
1883
1884 ;; This is for when they use --no-desktop with -q, or
1885 ;; don't load Desktop in their .emacs. If desktop.el
1886 ;; _is_ loaded, it will handle this switch, and we
1887 ;; won't see it by the time we get here.
1888 ((equal argi "-no-desktop")
1889 (message "\"--no-desktop\" ignored because the Desktop package is not loaded"))
1890
1891 ((string-match "^\\+[0-9]+\\'" argi)
1892 (setq line (string-to-number argi)))
1893
1894 ((string-match "^\\+\\([0-9]+\\):\\([0-9]+\\)\\'" argi)
1895 (setq line (string-to-number (match-string 1 argi))
1896 column (string-to-number (match-string 2 argi))))
1897
1898 ((setq tem (assoc argi command-line-x-option-alist))
1899 ;; Ignore X-windows options and their args if not using X.
1900 (setq command-line-args-left
1901 (nthcdr (nth 1 tem) command-line-args-left)))
1902
1903 ((member argi '("-find-file" "-file" "-visit"))
1904 ;; An explicit option to specify visiting a file.
1905 (setq tem (or argval (pop command-line-args-left)))
1906 (unless (stringp tem)
1907 (error "File name omitted from `%s' option" argi))
1908 (setq file-count (1+ file-count))
1909 (let ((file (expand-file-name
1910 (command-line-normalize-file-name tem) dir)))
1911 (if (= file-count 1)
1912 (setq first-file-buffer (find-file file))
1913 (find-file-other-window file)))
1914 (or (zerop line)
1915 (goto-line line))
1916 (setq line 0)
1917 (unless (< column 1)
1918 (move-to-column (1- column)))
1919 (setq column 0))
1920
1921 ((equal argi "--")
1922 (setq just-files t))
1923 (t
1924 ;; We have almost exhausted our options. See if the
1925 ;; user has made any other command-line options available
1926 (let ((hooks command-line-functions) ;; lrs 7/31/89
1927 (did-hook nil))
1928 (while (and hooks
1929 (not (setq did-hook (funcall (car hooks)))))
1930 (setq hooks (cdr hooks)))
1931 (if (not did-hook)
1932 ;; Presume that the argument is a file name.
1933 (progn
1934 (if (string-match "\\`-" argi)
1935 (error "Unknown option `%s'" argi))
1936 (setq file-count (1+ file-count))
1937 (let ((file
1938 (expand-file-name
1939 (command-line-normalize-file-name orig-argi)
1940 dir)))
1941 (if (= file-count 1)
1942 (setq first-file-buffer (find-file file))
1943 (find-file-other-window file)))
1944 (or (zerop line)
1945 (goto-line line))
1946 (setq line 0)
1947 (unless (< column 1)
1948 (move-to-column (1- column)))
1949 (setq column 0))))))
1950 ;; In unusual circumstances, the execution of Lisp code due
1951 ;; to command-line options can cause the last visible frame
1952 ;; to be deleted. In this case, kill emacs to avoid an
1953 ;; abort later.
1954 (unless (frame-live-p (selected-frame)) (kill-emacs nil))))
1955
1956 ;; If 3 or more files visited, and not all visible,
1957 ;; show user what they all are. But leave the last one current.
1958 (and (> file-count 2)
1959 (not noninteractive)
1960 (not inhibit-startup-buffer-menu)
1961 (or (get-buffer-window first-file-buffer)
1962 (list-buffers)))))
1963
1964 ;; Maybe display a startup screen.
1965 (unless (or inhibit-startup-message
1966 noninteractive
1967 emacs-quick-startup)
1968 ;; Display a startup screen, after some preparations.
1969
1970 ;; If there are no switches to process, we might as well
1971 ;; run this hook now, and there may be some need to do it
1972 ;; before doing any output.
1973 (run-hooks 'emacs-startup-hook)
1974 (and term-setup-hook
1975 (run-hooks 'term-setup-hook))
1976 (setq inhibit-startup-hooks t)
1977
1978 ;; It's important to notice the user settings before we
1979 ;; display the startup message; otherwise, the settings
1980 ;; won't take effect until the user gives the first
1981 ;; keystroke, and that's distracting.
1982 (when (fboundp 'frame-notice-user-settings)
1983 (frame-notice-user-settings))
1984
1985 ;; If there are no switches to process, we might as well
1986 ;; run this hook now, and there may be some need to do it
1987 ;; before doing any output.
1988 (when window-setup-hook
1989 (run-hooks 'window-setup-hook)
1990 ;; Don't let the hook be run twice.
1991 (setq window-setup-hook nil))
1992
1993 ;; Do this now to avoid an annoying delay if the user
1994 ;; clicks the menu bar during the sit-for.
1995 (when (display-popup-menus-p)
1996 (precompute-menubar-bindings))
1997 (with-no-warnings
1998 (setq menubar-bindings-done t))
1999
2000 ;; If *scratch* exists and is empty, insert initial-scratch-message.
2001 (and initial-scratch-message
2002 (get-buffer "*scratch*")
2003 (with-current-buffer "*scratch*"
2004 (when (zerop (buffer-size))
2005 (insert initial-scratch-message)
2006 (set-buffer-modified-p nil))))
2007
2008 ;; If user typed input during all that work,
2009 ;; abort the startup screen. Otherwise, display it now.
2010 (unless (input-pending-p)
2011 (display-splash-screen t))))
2012
2013
2014 (defun command-line-normalize-file-name (file)
2015 "Collapse multiple slashes to one, to handle non-Emacs file names."
2016 (save-match-data
2017 ;; Use arg 1 so that we don't collapse // at the start of the file name.
2018 ;; That is significant on some systems.
2019 ;; However, /// at the beginning is supposed to mean just /, not //.
2020 (if (string-match "^///+" file)
2021 (setq file (replace-match "/" t t file)))
2022 (while (string-match "//+" file 1)
2023 (setq file (replace-match "/" t t file)))
2024 file))
2025
2026 ;; arch-tag: 7e294698-244d-4758-984b-4047f887a5db
2027 ;;; startup.el ends here