1 ;;; startup.el --- process Emacs shell arguments -*- lexical-binding: t -*-
3 ;; Copyright (C) 1985-1986, 1992, 1994-2015 Free Software Foundation,
6 ;; Maintainer: emacs-devel@gnu.org
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software: you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation, either version 3 of the License, or
15 ;; (at your option) any later version.
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
27 ;; This file parses the command line and gets Emacs running. Options
28 ;; on the command line are handled in precedence order. For priorities
29 ;; see the structure standard_args in the emacs.c file.
33 (setq top-level
'(normal-top-level))
35 (defvar command-line-processed nil
36 "Non-nil once command line has been processed.")
38 (defgroup initialization nil
39 "Emacs start-up procedure."
42 (defcustom initial-buffer-choice nil
43 "Buffer to show after starting Emacs.
44 If the value is nil and `inhibit-startup-screen' is nil, show the
45 startup screen. If the value is a string, switch to a buffer
46 visiting the file or directory that the string specifies. If the
47 value is a function, call it with no arguments and switch to the buffer
48 that it returns. If t, open the `*scratch*' buffer.
50 When `initial-buffer-choice' is non-nil, the startup screen is
53 If you use `emacsclient' with no target file, then it obeys any
54 string or function value that this variable has."
56 (const :tag
"Startup screen" nil
)
57 (directory :tag
"Directory" :value
"~/")
58 (file :tag
"File" :value
"~/.emacs")
59 ;; Note sure about hard-coding this as an option...
60 (const :tag
"Remember Mode notes buffer" remember-notes
)
61 (function :tag
"Function")
62 (const :tag
"Lisp scratch buffer" t
))
64 :group
'initialization
)
66 (defcustom inhibit-startup-screen nil
67 "Non-nil inhibits the startup screen.
69 This is for use in your personal init file (but NOT site-start.el),
70 once you are familiar with the contents of the startup screen."
72 :group
'initialization
)
74 (defvaralias 'inhibit-splash-screen
'inhibit-startup-screen
)
75 (defvaralias 'inhibit-startup-message
'inhibit-startup-screen
)
77 (defvar startup-screen-inhibit-startup-screen nil
)
79 ;; FIXME? Why does this get such weirdly extreme treatment, when the
80 ;; more important inhibit-startup-screen does not.
81 (defcustom inhibit-startup-echo-area-message nil
82 "Non-nil inhibits the initial startup echo area message.
83 Setting this variable takes effect
84 only if you do it with the customization buffer
85 or if your init file contains a line of this form:
86 (setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\")
87 If your init file is byte-compiled, use the following form
89 (eval '(setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\"))
90 Thus, someone else using a copy of your init file will see the
91 startup message unless he personally acts to inhibit it."
92 :type
'(choice (const :tag
"Don't inhibit")
93 (string :tag
"Enter your user name, to inhibit"))
94 :group
'initialization
)
96 (defcustom inhibit-default-init nil
97 "Non-nil inhibits loading the `default' library."
99 :group
'initialization
)
101 (defcustom inhibit-startup-buffer-menu nil
102 "Non-nil inhibits display of buffer list when more than 2 files are loaded."
104 :group
'initialization
)
106 (defvar command-switch-alist nil
107 "Alist of command-line switches.
108 Elements look like (SWITCH-STRING . HANDLER-FUNCTION).
109 HANDLER-FUNCTION receives the switch string as its sole argument;
110 the remaining command-line args are in the variable `command-line-args-left'.")
112 (defvar command-line-args-left nil
113 "List of command-line args not yet processed.")
115 (defvaralias 'argv
'command-line-args-left
116 "List of command-line args not yet processed.
117 This is a convenience alias, so that one can write \(pop argv\)
118 inside of --eval command line arguments in order to access
119 following arguments.")
120 (internal-make-var-non-special 'argv
)
123 "Current command-line argument.")
124 (internal-make-var-non-special 'argi
)
126 (defvar command-line-functions nil
;; lrs 7/31/89
127 "List of functions to process unrecognized command-line arguments.
128 Each function should access the dynamically bound variables
129 `argi' (the current argument) and `command-line-args-left' (the remaining
130 arguments). The function should return non-nil only if it recognizes and
131 processes `argi'. If it does so, it may consume successive arguments by
132 altering `command-line-args-left' to remove them.")
134 (defvar command-line-default-directory nil
135 "Default directory to use for command line arguments.
136 This is normally copied from `default-directory' when Emacs starts.")
138 ;; This is here, rather than in x-win.el, so that we can ignore these
139 ;; options when we are not using X.
140 (defconst command-line-x-option-alist
141 '(("-bw" 1 x-handle-numeric-switch border-width
)
142 ("-d" 1 x-handle-display
)
143 ("-display" 1 x-handle-display
)
144 ("-name" 1 x-handle-name-switch
)
145 ("-title" 1 x-handle-switch title
)
146 ("-T" 1 x-handle-switch title
)
147 ("-r" 0 x-handle-switch reverse t
)
148 ("-rv" 0 x-handle-switch reverse t
)
149 ("-reverse" 0 x-handle-switch reverse t
)
150 ("-reverse-video" 0 x-handle-switch reverse t
)
151 ("-fn" 1 x-handle-switch font
)
152 ("-font" 1 x-handle-switch font
)
153 ("-fs" 0 x-handle-initial-switch fullscreen fullboth
)
154 ("-fw" 0 x-handle-initial-switch fullscreen fullwidth
)
155 ("-fh" 0 x-handle-initial-switch fullscreen fullheight
)
156 ("-mm" 0 x-handle-initial-switch fullscreen maximized
)
157 ("-ib" 1 x-handle-numeric-switch internal-border-width
)
158 ("-g" 1 x-handle-geometry
)
159 ("-lsp" 1 x-handle-numeric-switch line-spacing
)
160 ("-geometry" 1 x-handle-geometry
)
161 ("-fg" 1 x-handle-switch foreground-color
)
162 ("-foreground" 1 x-handle-switch foreground-color
)
163 ("-bg" 1 x-handle-switch background-color
)
164 ("-background" 1 x-handle-switch background-color
)
165 ("-ms" 1 x-handle-switch mouse-color
)
166 ("-nbi" 0 x-handle-switch icon-type nil
)
167 ("-iconic" 0 x-handle-iconic
)
168 ("-xrm" 1 x-handle-xrm-switch
)
169 ("-cr" 1 x-handle-switch cursor-color
)
170 ("-vb" 0 x-handle-switch vertical-scroll-bars t
)
171 ("-hb" 0 x-handle-switch horizontal-scroll-bars t
)
172 ("-bd" 1 x-handle-switch
)
173 ("--border-width" 1 x-handle-numeric-switch border-width
)
174 ("--display" 1 x-handle-display
)
175 ("--name" 1 x-handle-name-switch
)
176 ("--title" 1 x-handle-switch title
)
177 ("--reverse-video" 0 x-handle-switch reverse t
)
178 ("--font" 1 x-handle-switch font
)
179 ("--fullscreen" 0 x-handle-initial-switch fullscreen fullboth
)
180 ("--fullwidth" 0 x-handle-initial-switch fullscreen fullwidth
)
181 ("--fullheight" 0 x-handle-initial-switch fullscreen fullheight
)
182 ("--maximized" 0 x-handle-initial-switch fullscreen maximized
)
183 ("--internal-border" 1 x-handle-numeric-switch internal-border-width
)
184 ("--geometry" 1 x-handle-geometry
)
185 ("--foreground-color" 1 x-handle-switch foreground-color
)
186 ("--background-color" 1 x-handle-switch background-color
)
187 ("--mouse-color" 1 x-handle-switch mouse-color
)
188 ("--no-bitmap-icon" 0 x-handle-no-bitmap-icon
)
189 ("--iconic" 0 x-handle-iconic
)
190 ("--xrm" 1 x-handle-xrm-switch
)
191 ("--cursor-color" 1 x-handle-switch cursor-color
)
192 ("--vertical-scroll-bars" 0 x-handle-switch vertical-scroll-bars t
)
193 ("--line-spacing" 1 x-handle-numeric-switch line-spacing
)
194 ("--border-color" 1 x-handle-switch border-color
)
195 ("--smid" 1 x-handle-smid
)
196 ("--parent-id" 1 x-handle-parent-id
))
197 "Alist of X Windows options.
198 Each element has the form
199 (NAME NUMARGS HANDLER FRAME-PARAM VALUE)
200 where NAME is the option name string, NUMARGS is the number of arguments
201 that the option accepts, HANDLER is a function to call to handle the option.
202 FRAME-PARAM (optional) is the frame parameter this option specifies,
203 and VALUE is the value which is given to that frame parameter
204 \(most options use the argument for this, so VALUE is not present).")
206 (defconst command-line-ns-option-alist
207 '(("-NSAutoLaunch" 1 ns-ignore-1-arg
)
208 ("-NXAutoLaunch" 1 ns-ignore-1-arg
)
210 ("-NSHost" 1 ns-ignore-1-arg
)
211 ("-_NSMachLaunch" 1 ns-ignore-1-arg
)
212 ("-MachLaunch" 1 ns-ignore-1-arg
)
213 ("-NXOpen" 1 ns-ignore-1-arg
)
214 ("-NSOpen" 1 ns-handle-nxopen
)
215 ("-NXOpenTemp" 1 ns-ignore-1-arg
)
216 ("-NSOpenTemp" 1 ns-handle-nxopentemp
)
217 ("-GSFilePath" 1 ns-handle-nxopen
)
218 ;;("-bw" . x-handle-numeric-switch)
219 ;;("-d" . x-handle-display)
220 ;;("-display" . x-handle-display)
221 ("-name" 1 x-handle-name-switch
)
222 ("-title" 1 x-handle-switch title
)
223 ("-T" 1 x-handle-switch title
)
224 ("-r" 0 x-handle-switch reverse t
)
225 ("-rv" 0 x-handle-switch reverse t
)
226 ("-reverse" 0 x-handle-switch reverse t
)
227 ("-fn" 1 x-handle-switch font
)
228 ("-font" 1 x-handle-switch font
)
229 ("-ib" 1 x-handle-numeric-switch internal-border-width
)
230 ("-g" 1 x-handle-geometry
)
231 ("-geometry" 1 x-handle-geometry
)
232 ("-fg" 1 x-handle-switch foreground-color
)
233 ("-foreground" 1 x-handle-switch foreground-color
)
234 ("-bg" 1 x-handle-switch background-color
)
235 ("-background" 1 x-handle-switch background-color
)
236 ; ("-ms" 1 x-handle-switch mouse-color)
237 ("-itype" 0 x-handle-switch icon-type t
)
238 ("-i" 0 x-handle-switch icon-type t
)
239 ("-iconic" 0 x-handle-iconic icon-type t
)
240 ;;("-xrm" . x-handle-xrm-switch)
241 ("-cr" 1 x-handle-switch cursor-color
)
242 ("-vb" 0 x-handle-switch vertical-scroll-bars t
)
243 ("-hb" 0 x-handle-switch horizontal-scroll-bars t
)
244 ("-bd" 1 x-handle-switch
)
245 ;; ("--border-width" 1 x-handle-numeric-switch border-width)
246 ;; ("--display" 1 ns-handle-display)
247 ("--name" 1 x-handle-name-switch
)
248 ("--title" 1 x-handle-switch title
)
249 ("--reverse-video" 0 x-handle-switch reverse t
)
250 ("--font" 1 x-handle-switch font
)
251 ("--internal-border" 1 x-handle-numeric-switch internal-border-width
)
252 ;; ("--geometry" 1 ns-handle-geometry)
253 ("--foreground-color" 1 x-handle-switch foreground-color
)
254 ("--background-color" 1 x-handle-switch background-color
)
255 ("--mouse-color" 1 x-handle-switch mouse-color
)
256 ("--icon-type" 0 x-handle-switch icon-type t
)
257 ("--iconic" 0 x-handle-iconic
)
258 ;; ("--xrm" 1 ns-handle-xrm-switch)
259 ("--cursor-color" 1 x-handle-switch cursor-color
)
260 ("--vertical-scroll-bars" 0 x-handle-switch vertical-scroll-bars t
)
261 ("--border-color" 1 x-handle-switch border-width
))
262 "Alist of NS options.
263 Each element has the form
264 (NAME NUMARGS HANDLER FRAME-PARAM VALUE)
265 where NAME is the option name string, NUMARGS is the number of arguments
266 that the option accepts, HANDLER is a function to call to handle the option.
267 FRAME-PARAM (optional) is the frame parameter this option specifies,
268 and VALUE is the value which is given to that frame parameter
269 \(most options use the argument for this, so VALUE is not present).")
272 (defvar before-init-hook nil
273 "Normal hook run after handling urgent options but before loading init files.")
275 (defvar after-init-hook nil
276 "Normal hook run after initializing the Emacs session.
277 It is run after Emacs loads the init file, `default' library, the
278 abbrevs file, and additional Lisp packages (if any), and setting
279 the value of `after-init-time'.
281 There is no `condition-case' around the running of this hook;
282 therefore, if `debug-on-error' is non-nil, an error in one of
283 these functions will invoke the debugger.")
285 (defvar emacs-startup-hook nil
286 "Normal hook run after loading init files and handling the command line.")
288 (defvar term-setup-hook nil
289 "Normal hook run immediately after `emacs-startup-hook'.
290 In new code, there is no reason to use this instead of `emacs-startup-hook'.
291 If you want to execute terminal-specific Lisp code, for example
292 to override the definitions made by the terminal-specific file,
293 see `tty-setup-hook'.")
295 (make-obsolete-variable 'term-setup-hook
296 "use either `emacs-startup-hook' or \
297 `tty-setup-hook' instead." "24.4")
299 (defvar inhibit-startup-hooks nil
300 "Non-nil means don't run some startup hooks, because we already did.
301 Currently this applies to: `emacs-startup-hook', `term-setup-hook',
302 and `window-setup-hook'.")
304 (defvar keyboard-type nil
305 "The brand of keyboard you are using.
306 This variable is used to define the proper function and keypad
307 keys for use under X. It is used in a fashion analogous to the
308 environment variable TERM.")
310 (defvar window-setup-hook nil
311 "Normal hook run after loading init files and handling the command line.
312 This is very similar to `emacs-startup-hook'. The only difference
313 is that this hook runs after frame parameters have been set up in
314 response to any settings from your init file. Unless this matters
315 to you, use `emacs-startup-hook' instead. (The name of this hook
316 is due to historical reasons, and does not reflect its purpose very well.)")
318 (defcustom initial-major-mode
'lisp-interaction-mode
319 "Major mode command symbol to use for the initial `*scratch*' buffer."
321 :group
'initialization
)
323 (defvar init-file-user nil
324 "Identity of user whose init file is or was read.
325 The value is nil if `-q' or `--no-init-file' was specified,
326 meaning do not load any init file.
328 Otherwise, the value may be an empty string, meaning
329 use the init file for the user who originally logged in,
330 or it may be a string containing a user's name meaning
331 use that person's init file.
333 In either of the latter cases, `(concat \"~\" init-file-user \"/\")'
334 evaluates to the name of the directory where the init file was
337 Setting `init-file-user' does not prevent Emacs from loading
338 `site-start.el'. The only way to do that is to use `--no-site-file'.")
340 (defcustom site-run-file
(purecopy "site-start")
341 "File containing site-wide run-time initializations.
342 This file is loaded at run-time before `~/.emacs'. It contains inits
343 that need to be in place for the entire site, but which, due to their
344 higher incidence of change, don't make sense to load into Emacs's
345 dumped image. Thus, the run-time load order is: 1. file described in
346 this variable, if non-nil; 2. `~/.emacs'; 3. `default.el'.
348 Don't use the `site-start.el' file for things some users may not like.
349 Put them in `default.el' instead, so that users can more easily
350 override them. Users can prevent loading `default.el' with the `-q'
351 option or by setting `inhibit-default-init' in their own init files,
352 but inhibiting `site-start.el' requires `--no-site-file', which
355 This variable is defined for customization so as to make
356 it visible in the relevant context. However, actually customizing it
357 is not allowed, since it would not work anyway. The only way to set
358 this variable usefully is to set it while building and dumping Emacs."
359 :type
'(choice (const :tag
"none" nil
) string
)
360 :group
'initialization
361 :initialize
#'custom-initialize-default
362 :set
(lambda (_variable _value
)
363 (error "Customizing ‘site-run-file’ does not work")))
365 (make-obsolete-variable 'system-name
"use (system-name) instead" "25.1")
367 (defcustom mail-host-address nil
368 "Name of this machine, for purposes of naming users.
369 If non-nil, Emacs uses this instead of `system-name' when constructing
371 :type
'(choice (const nil
) string
)
374 (defcustom user-mail-address
(if command-line-processed
376 (concat (user-login-name) "@"
377 (or mail-host-address
379 ;; Empty string means "not set yet".
381 "Full mailing address of this user.
382 This is initialized with environment variable `EMAIL' or, as a
383 fallback, using `mail-host-address'. This is done after your
384 init file is read, in case it sets `mail-host-address'."
388 (defcustom auto-save-list-file-prefix
389 (cond ((eq system-type
'ms-dos
)
390 ;; MS-DOS cannot have initial dot, and allows only 8.3 names
391 (concat user-emacs-directory
"auto-save.list/_s"))
393 (concat user-emacs-directory
"auto-save-list/.saves-")))
394 "Prefix for generating `auto-save-list-file-name'.
395 This is used after reading your init file to initialize
396 `auto-save-list-file-name', by appending Emacs's pid and the system name,
397 if you have not already set `auto-save-list-file-name' yourself.
398 Directories in the prefix will be created if necessary.
399 Set this to nil if you want to prevent `auto-save-list-file-name'
400 from being initialized."
401 :type
'(choice (const :tag
"Don't record a session's auto save list" nil
)
405 (defvar emacs-basic-display nil
)
407 (defvar init-file-debug nil
)
409 (defvar init-file-had-error nil
410 "Non-nil if there was an error loading the user's init file.")
412 (defvar normal-top-level-add-subdirs-inode-list nil
)
414 (defvar no-blinking-cursor nil
)
416 (defvar pure-space-overflow nil
417 "Non-nil if building Emacs overflowed pure space.")
419 (defvar pure-space-overflow-message
(purecopy "\
420 Warning Warning!!! Pure space overflow !!!Warning Warning
421 \(See the node Pure Storage in the Lisp manual for details.)\n"))
423 (defcustom tutorial-directory
424 (file-name-as-directory (expand-file-name "tutorials" data-directory
))
425 "Directory containing the Emacs TUTORIAL files."
428 :initialize
#'custom-initialize-delay
)
430 (defun normal-top-level-add-subdirs-to-load-path ()
431 "Add all subdirectories of `default-directory' to `load-path'.
432 More precisely, this uses only the subdirectories whose names
433 start with letters or digits; it excludes any subdirectory named `RCS'
434 or `CVS', and any subdirectory that contains a file named `.nosearch'."
437 (pending (list default-directory
)))
438 ;; This loop does a breadth-first tree walk on DIR's subtree,
439 ;; putting each subdir into DIRS as its contents are examined.
441 (push (pop pending
) dirs
)
442 (let* ((this-dir (car dirs
))
443 (contents (directory-files this-dir
))
444 (default-directory this-dir
)
445 (canonicalized (if (fboundp 'w32-untranslated-canonical-name
)
446 (w32-untranslated-canonical-name this-dir
))))
447 ;; The Windows version doesn't report meaningful inode numbers, so
448 ;; use the canonicalized absolute file name of the directory instead.
449 (setq attrs
(or canonicalized
450 (nthcdr 10 (file-attributes this-dir
))))
451 (unless (member attrs normal-top-level-add-subdirs-inode-list
)
452 (push attrs normal-top-level-add-subdirs-inode-list
)
453 (dolist (file contents
)
454 (and (string-match "\\`[[:alnum:]]" file
)
455 ;; The lower-case variants of RCS and CVS are for DOS/Windows.
456 (not (member file
'("RCS" "CVS" "rcs" "cvs")))
457 ;; Avoid doing a `stat' when it isn't necessary because
458 ;; that can cause trouble when an NFS server is down.
459 (not (string-match "\\.elc?\\'" file
))
460 (file-directory-p file
)
461 (let ((expanded (expand-file-name file
)))
462 (or (file-exists-p (expand-file-name ".nosearch" expanded
))
463 (setq pending
(nconc pending
(list expanded
))))))))))
464 (normal-top-level-add-to-load-path (cdr (nreverse dirs
)))))
466 (defun normal-top-level-add-to-load-path (dirs)
467 "This function is called from a subdirs.el file.
468 It assumes that `default-directory' is the directory in which the
469 subdirs.el file exists, and it adds to `load-path' the subdirs of
470 that directory as specified in DIRS. Normally the elements of
472 (let ((tail load-path
)
473 (thisdir (directory-file-name default-directory
)))
475 ;;Don't go all the way to the nil terminator.
477 (not (equal thisdir
(car tail
)))
478 (not (and (memq system-type
'(ms-dos windows-nt
))
479 (equal (downcase thisdir
) (downcase (car tail
))))))
480 (setq tail
(cdr tail
)))
481 ;;Splice the new section in.
483 (setcdr tail
(append (mapcar 'expand-file-name dirs
) (cdr tail
))))))
485 (defun normal-top-level ()
486 "Emacs calls this function when it first starts up.
487 It sets `command-line-processed', processes the command-line,
488 reads the initialization files, etc.
489 It is the default value of the variable `top-level'."
490 (if command-line-processed
491 (message internal--top-level-message
)
492 (setq command-line-processed t
)
494 ;; Look in each dir in load-path for a subdirs.el file. If we
495 ;; find one, load it, which will add the appropriate subdirs of
496 ;; that dir into load-path. This needs to be done before setting
497 ;; the locale environment, because the latter might need to load
498 ;; some support files.
499 ;; Look for a leim-list.el file too. Loading it will register
500 ;; available input methods.
501 (let ((tail load-path
)
502 (lispdir (expand-file-name "../lisp" data-directory
))
505 (setq dir
(car tail
))
506 (let ((default-directory dir
))
507 (load (expand-file-name "subdirs.el") t t t
))
508 ;; Do not scan standard directories that won't contain a leim-list.el.
509 ;; http://lists.gnu.org/archive/html/emacs-devel/2009-10/msg00502.html
510 ;; (Except the preloaded one in lisp/leim.)
511 (or (string-prefix-p lispdir dir
)
512 (let ((default-directory dir
))
513 (load (expand-file-name "leim-list.el") t t t
)))
514 ;; We don't use a dolist loop and we put this "setq-cdr" command at
515 ;; the end, because the subdirs.el files may add elements to the end
516 ;; of load-path and we want to take it into account.
517 (setq tail
(cdr tail
))))
519 ;; Set the default strings to display in mode line for end-of-line
520 ;; formats that aren't native to this platform. This should be
521 ;; done before calling set-locale-environment, as the latter might
522 ;; use these mnemonics.
524 ((memq system-type
'(ms-dos windows-nt
))
525 (setq eol-mnemonic-unix
"(Unix)"
526 eol-mnemonic-mac
"(Mac)"))
527 (t ; this is for Unix/GNU/Linux systems
528 (setq eol-mnemonic-dos
"(DOS)"
529 eol-mnemonic-mac
"(Mac)")))
531 (set-locale-environment nil
)
532 ;; Decode all default-directory's (probably, only *scratch* exists
533 ;; at this point). default-directory of *scratch* is the basis
534 ;; for many other file-name variables and directory lists, so it
535 ;; is important to decode it ASAP.
536 (when locale-coding-system
537 (let ((coding (if (eq system-type
'windows-nt
)
538 ;; MS-Windows build converts all file names to
539 ;; UTF-8 during startup.
541 locale-coding-system
)))
543 (dolist (elt (buffer-list))
545 (if default-directory
546 (setq default-directory
547 (decode-coding-string default-directory coding t
)))))
549 ;; Decode all the important variables and directory lists, now
550 ;; that we know the locale's encoding. This is because the
551 ;; values of these variables are until here unibyte undecoded
552 ;; strings created by build_unibyte_string. data-directory in
553 ;; particular is used to construct many other standard
554 ;; directory names, so it must be decoded ASAP. Note that
555 ;; charset-map-path cannot be decoded here, since we could
556 ;; then be trapped in infinite recursion below, when we load
557 ;; subdirs.el, because encoding a directory name might need to
558 ;; load a charset map, which will want to encode
559 ;; charset-map-path, which will want to load the same charset
560 ;; map... So decoding of charset-map-path is delayed until
561 ;; further down below.
562 (dolist (pathsym '(load-path exec-path
))
563 (let ((path (symbol-value pathsym
)))
565 (set pathsym
(mapcar (lambda (dir)
566 (decode-coding-string dir coding t
))
568 (dolist (filesym '(data-directory doc-directory exec-directory
569 installation-directory
570 invocation-directory invocation-name
572 shared-game-score-directory
))
573 (let ((file (symbol-value filesym
)))
575 (set filesym
(decode-coding-string file coding t
)))))))
577 (let ((dir default-directory
))
578 (with-current-buffer "*Messages*"
579 (messages-buffer-mode)
580 ;; Make it easy to do like "tail -f".
581 (set (make-local-variable 'window-point-insertion-type
) t
)
582 ;; Give *Messages* the same default-directory as *scratch*,
583 ;; just to keep things predictable.
584 (setq default-directory
(or dir
(expand-file-name "~/")))))
585 ;; `user-full-name' is now known; reset its standard-value here.
586 (put 'user-full-name
'standard-value
587 (list (default-value 'user-full-name
)))
588 ;; If the PWD environment variable isn't accurate, delete it.
589 (let ((pwd (getenv "PWD")))
591 ;; Use FOO/., so that if FOO is a symlink, file-attributes
592 ;; describes the directory linked to, not FOO itself.
593 (or (and default-directory
594 (equal (file-attributes
595 (concat (file-name-as-directory pwd
) "."))
597 (concat (file-name-as-directory default-directory
)
599 (setq process-environment
600 (delete (concat "PWD=" pwd
)
601 process-environment
)))))
602 ;; Now, that other directories were searched, and any charsets we
603 ;; need for encoding them are already loaded, we are ready to
604 ;; decode charset-map-path.
605 (if (listp charset-map-path
)
606 (let ((coding (if (eq system-type
'windows-nt
)
608 locale-coding-system
)))
609 (setq charset-map-path
610 (mapcar (lambda (dir)
611 (decode-coding-string dir coding t
))
613 (if default-directory
614 (setq default-directory
(abbreviate-file-name default-directory
))
615 (display-warning 'initialization
"Error setting default-directory"))
616 (let ((old-face-font-rescale-alist face-font-rescale-alist
))
619 ;; Do this again, in case .emacs defined more abbreviations.
620 (if default-directory
621 (setq default-directory
(abbreviate-file-name default-directory
)))
622 ;; Specify the file for recording all the auto save files of this session.
623 ;; This is used by recover-session.
624 (or auto-save-list-file-name
625 (and auto-save-list-file-prefix
626 (setq auto-save-list-file-name
627 ;; Under MS-DOS our PID is almost always reused between
628 ;; Emacs invocations. We need something more unique.
629 (cond ((eq system-type
'ms-dos
)
630 ;; We are going to access the auto-save
631 ;; directory, so make sure it exists.
633 (file-name-directory auto-save-list-file-prefix
)
638 auto-save-list-file-prefix
))
643 auto-save-list-file-prefix
646 (unless inhibit-startup-hooks
647 (run-hooks 'emacs-startup-hook
'term-setup-hook
))
649 ;; Don't do this if we failed to create the initial frame,
650 ;; for instance due to a dense colormap.
651 (when (or frame-initial-frame
652 ;; If frame-initial-frame has no meaning, do this anyway.
653 (not (and initial-window-system
655 (not (eq initial-window-system
'pc
)))))
657 ;; FIXME: The user's init file may change
658 ;; face-font-rescale-alist. However, the default face
659 ;; already has an assigned font object, which does not take
660 ;; face-font-rescale-alist into account. For such
661 ;; situations, we ought to have a way to find all font
662 ;; objects and regenerate them; currently we do not. As a
663 ;; workaround, we specifically reset te default face's :font
664 ;; attribute here. See bug#1785.
665 (unless (eq face-font-rescale-alist
666 old-face-font-rescale-alist
)
667 (set-face-attribute 'default nil
:font
(font-spec)))
669 ;; Modify the initial frame based on what .emacs puts into
671 (if (fboundp 'frame-notice-user-settings
)
672 (frame-notice-user-settings))
673 ;; Set the faces for the initial background mode even if
674 ;; frame-notice-user-settings didn't (such as on a tty).
675 ;; frame-set-background-mode is idempotent, so it won't
676 ;; cause any harm if it's already been done.
677 (if (fboundp 'frame-set-background-mode
)
678 (frame-set-background-mode (selected-frame))))
680 ;; Now we know the user's default font, so add it to the menu.
681 (if (fboundp 'font-menu-add-default
)
682 (font-menu-add-default))
683 (unless inhibit-startup-hooks
684 (run-hooks 'window-setup-hook
))))
685 ;; Subprocesses of Emacs do not have direct access to the terminal, so
686 ;; unless told otherwise they should only assume a dumb terminal.
687 ;; We are careful to do it late (after term-setup-hook), although the
688 ;; new multi-tty code does not use $TERM any more there anyway.
689 (setenv "TERM" "dumb")
690 ;; Remove DISPLAY from the process-environment as well. This allows
691 ;; `callproc.c' to give it a useful adaptive default which is either
692 ;; the value of the `display' frame-parameter or the DISPLAY value
693 ;; from initial-environment.
694 (let ((display (frame-parameter nil
'display
)))
695 ;; Be careful which DISPLAY to remove from process-environment: follow
696 ;; the logic of `callproc.c'.
697 (if (stringp display
) (setq display
(concat "DISPLAY=" display
))
698 (dolist (varval initial-environment
)
699 (if (string-match "\\`DISPLAY=" varval
)
700 (setq display varval
))))
702 (delete display process-environment
)))))
704 ;; Precompute the keyboard equivalents in the menu bar items.
705 ;; Command-line options supported by tty's:
706 (defconst tty-long-option-alist
707 '(("--name" .
"-name")
709 ("--reverse-video" .
"-reverse")
710 ("--foreground-color" .
"-fg")
711 ("--background-color" .
"-bg")
712 ("--color" .
"-color")))
714 (defconst tool-bar-images-pixel-height
24
715 "Height in pixels of images in the tool-bar.")
717 (cl-defgeneric handle-args-function
(args)
718 "Method for processing window-system dependent command-line arguments.
719 Window system startup files should add their own function to this
720 method, which should parse the command line arguments. Those
721 pertaining to the window system should be processed and removed
722 from the returned command line.")
723 (cl-defmethod handle-args-function (args &context
(window-system (eql nil
)))
724 (tty-handle-args args
))
726 (cl-defgeneric window-system-initialization
(&optional _display
)
727 "Method for window-system initialization.
728 Window-system startup files should add their own implementation
729 to this method. The function should initialize the window system environment
730 to prepare for opening the first frame (e.g. open a connection to an X server)."
733 (defun tty-handle-args (args)
734 "Handle the X-like command-line arguments \"-fg\", \"-bg\", \"-name\", etc."
737 (not (equal (car args
) "--")))
738 (let* ((argi (pop args
))
741 ;; Check for long options with attached arguments
742 ;; and separate out the attached option argument into argval.
743 (when (string-match "^\\(--[^=]*\\)=" argi
)
744 (setq argval
(substring argi
(match-end 0))
745 argi
(match-string 1 argi
)))
746 (when (string-match "^--" argi
)
747 (setq completion
(try-completion argi tty-long-option-alist
))
748 (if (eq completion t
)
749 ;; Exact match for long option.
750 (setq argi
(cdr (assoc argi tty-long-option-alist
)))
751 (if (stringp completion
)
752 (let ((elt (assoc completion tty-long-option-alist
)))
753 ;; Check for abbreviated long option.
755 (error "Option ‘%s’ is ambiguous" argi
))
756 (setq argi
(cdr elt
)))
757 ;; Check for a short option.
760 (cond ((member argi
'("-fg" "-foreground"))
761 (push (cons 'foreground-color
(or argval
(pop args
)))
762 default-frame-alist
))
763 ((member argi
'("-bg" "-background"))
764 (push (cons 'background-color
(or argval
(pop args
)))
765 default-frame-alist
))
766 ((member argi
'("-T" "-name"))
767 (unless argval
(setq argval
(pop args
)))
771 (let ((case-fold-search t
)
773 (setq argval
(invocation-name))
775 ;; Change any . or * characters in name to
776 ;; hyphens, so as to emulate behavior on X.
778 (setq i
(string-match "[.*]" argval
))
781 default-frame-alist
))
782 ((member argi
'("-r" "-rv" "-reverse"))
784 default-frame-alist
))
785 ((equal argi
"-color")
786 (unless argval
(setq argval
8)) ; default --color means 8 ANSI colors
787 (push (cons 'tty-color-mode
789 ((numberp argval
) argval
)
790 ((string-match "-?[0-9]+" argval
)
791 (string-to-number argval
))
792 (t (intern argval
))))
793 default-frame-alist
))
796 (nconc (nreverse rest
) args
)))
798 (declare-function x-get-resource
"frame.c"
799 (attribute class
&optional component subclass
))
800 (declare-function tool-bar-mode
"tool-bar" (&optional arg
))
801 (declare-function tool-bar-setup
"tool-bar")
804 (defvar server-process
)
806 (defun command-line ()
807 "A subroutine of `normal-top-level'.
808 Amongst another things, it parses the command-line arguments."
809 (setq before-init-time
(current-time)
811 command-line-default-directory default-directory
)
813 ;; Force recomputation, in case it was computed during the dump.
814 (setq abbreviated-home-dir nil
)
816 ;; See if we should import version-control from the environment variable.
817 (let ((vc (getenv "VERSION_CONTROL")))
818 (cond ((eq vc nil
)) ;don't do anything if not set
819 ((member vc
'("t" "numbered"))
820 (setq version-control t
))
821 ((member vc
'("nil" "existing"))
822 (setq version-control nil
))
823 ((member vc
'("never" "simple"))
824 (setq version-control
'never
))))
826 ;;! This has been commented out; I currently find the behavior when
827 ;;! split-window-keep-point is nil disturbing, but if I can get used
828 ;;! to it, then it would be better to eliminate the option.
829 ;;! ;; Choose a good default value for split-window-keep-point.
830 ;;! (setq split-window-keep-point (> baud-rate 2400))
832 ;; Convert preloaded file names in load-history to absolute.
833 (let ((simple-file-name
834 ;; Look for simple.el or simple.elc and use their directory
835 ;; as the place where all Lisp files live.
836 (locate-file "simple" load-path
(get-load-suffixes)))
838 ;; Don't abort if simple.el cannot be found, but print a warning.
839 ;; Although in most usage we are going to cryptically abort a moment
840 ;; later anyway, due to missing required bidi data files (eg bug#13430).
841 (if (null simple-file-name
)
842 (let ((standard-output 'external-debugging-output
)
843 (lispdir (expand-file-name "../lisp" data-directory
)))
844 (princ "Warning: Could not find simple.el or simple.elc")
846 (when (getenv "EMACSLOADPATH")
847 (princ "The EMACSLOADPATH environment variable is set, \
848 please check its value")
850 (unless (file-readable-p lispdir
)
851 (princ (format "Lisp directory %s not readable?" lispdir
))
853 (setq lisp-dir
(file-truename (file-name-directory simple-file-name
)))
855 (mapcar (lambda (elt)
856 (if (and (stringp (car elt
))
857 (not (file-name-absolute-p (car elt
))))
858 (cons (concat lisp-dir
864 ;; Convert the arguments to Emacs internal representation.
865 (let ((args command-line-args
))
868 (decode-coding-string (car args
) locale-coding-system t
))
872 (args (cdr command-line-args
))
875 ;; Figure out which user's init file to load,
876 ;; either from the environment or from the options.
877 (setq init-file-user
(if noninteractive nil
(user-login-name)))
878 ;; If user has not done su, use current $HOME to find .emacs.
880 (equal init-file-user
(user-real-login-name))
881 (setq init-file-user
""))
883 ;; Process the command-line args, and delete the arguments
884 ;; processed. This is consistent with the way main in emacs.c
886 (while (and (not done
) args
)
887 (let* ((longopts '(("--no-init-file") ("--no-site-file")
888 ("--no-x-resources") ("--debug-init")
889 ("--user") ("--iconic") ("--icon-type") ("--quick")
890 ("--no-blinking-cursor") ("--basic-display")))
894 ;; Handle --OPTION=VALUE format.
895 (when (string-match "\\`\\(--[^=]*\\)=" argi
)
896 (setq argval
(substring argi
(match-end 0))
897 argi
(match-string 1 argi
)))
898 (when (string-match "\\`--." orig-argi
)
899 (let ((completion (try-completion argi longopts
)))
900 (cond ((eq completion t
)
901 (setq argi
(substring argi
1)))
902 ((stringp completion
)
903 (let ((elt (assoc completion longopts
)))
905 (error "Option ‘%s’ is ambiguous" argi
))
906 (setq argi
(substring (car elt
) 1))))
911 ;; The --display arg is handled partly in C, partly in Lisp.
912 ;; When it shows up here, we just put it back to be handled
913 ;; by `command-line-1'.
914 ((member argi
'("-d" "-display"))
915 (setq display-arg
(list argi
(pop args
))))
916 ((member argi
'("-Q" "-quick"))
917 (setq init-file-user nil
919 inhibit-x-resources t
)
920 ;; Stop it showing up in emacs -Q's customize-rogue.
921 (put 'site-run-file
'standard-value
'(nil)))
922 ((member argi
'("-no-x-resources"))
923 (setq inhibit-x-resources t
))
924 ((member argi
'("-D" "-basic-display"))
925 (setq no-blinking-cursor t
926 emacs-basic-display t
)
927 (push '(vertical-scroll-bars . nil
) initial-frame-alist
))
928 ((member argi
'("-q" "-no-init-file"))
929 (setq init-file-user nil
))
930 ((member argi
'("-u" "-user"))
931 (setq init-file-user
(or argval
(pop args
))
933 ((equal argi
"-no-site-file")
934 (setq site-run-file nil
)
935 (put 'site-run-file
'standard-value
'(nil)))
936 ((equal argi
"-debug-init")
937 (setq init-file-debug t
))
938 ((equal argi
"-iconic")
939 (push '(visibility . icon
) initial-frame-alist
))
940 ((member argi
'("-nbc" "-no-blinking-cursor"))
941 (setq no-blinking-cursor t
))
942 ;; Push the popped arg back on the list of arguments.
946 ;; Was argval set but not used?
948 (error "Option ‘%s’ doesn't allow an argument" argi
))))
950 ;; Re-attach the --display arg.
951 (and display-arg
(setq args
(append display-arg args
)))
953 ;; Re-attach the program name to the front of the arg list.
954 (and command-line-args
955 (setcdr command-line-args args
)))
957 ;; Make sure window system's init file was loaded in loadup.el if
958 ;; using a window system.
959 ;; Initialize the window-system only after processing the command-line
960 ;; args so that -Q can influence this initialization.
961 (condition-case error
962 (unless noninteractive
963 (if (and initial-window-system
966 (concat (symbol-name initial-window-system
) "-win")))))
967 (error "Unsupported window system ‘%s’" initial-window-system
))
968 ;; Process window-system specific command line parameters.
969 (setq command-line-args
970 (let ((window-system initial-window-system
)) ;Hack attack!
971 (handle-args-function command-line-args
)))
972 ;; Initialize the window system. (Open connection, etc.)
973 (let ((window-system initial-window-system
)) ;Hack attack!
974 (window-system-initialization))
975 (put initial-window-system
'window-system-initialized t
))
976 ;; If there was an error, print the error message and exit.
979 (if (eq (car error
) 'error
)
980 (apply 'concat
(cdr error
))
981 (if (memq 'file-error
(get (car error
) 'error-conditions
))
984 (mapconcat (lambda (obj) (prin1-to-string obj t
))
985 (cdr (cdr error
)) ", "))
987 (get (car error
) 'error-message
)
988 (mapconcat (lambda (obj) (prin1-to-string obj t
))
990 'external-debugging-output
)
991 (terpri 'external-debugging-output
)
992 (setq initial-window-system nil
)
995 (run-hooks 'before-init-hook
)
997 ;; Under X, create the X frame and delete the terminal frame.
999 (if (or noninteractive emacs-basic-display
)
1000 (setq menu-bar-mode nil
1002 no-blinking-cursor t
))
1005 (when (fboundp 'x-create-frame
)
1006 ;; Set up the tool-bar (even in tty frames, since Emacs might open a
1007 ;; graphical frame later).
1008 (unless noninteractive
1011 ;; Turn off blinking cursor if so specified in X resources. This is here
1012 ;; only because all other settings of no-blinking-cursor are here.
1013 (unless (or noninteractive
1015 (and (memq window-system
'(x w32 ns
))
1016 (not (member (x-get-resource "cursorBlink" "CursorBlink")
1017 '("no" "off" "false" "0")))))
1018 (setq no-blinking-cursor t
))
1020 ;; If curved quotes don't work, display ASCII approximations.
1021 (dolist (char-repl '((?‘ .
[?\
`]) (?’ .
[?
\']) (?“ .
[?
\"]) (?” .
[?
\"])))
1022 (when (not (char-displayable-p (car char-repl
)))
1023 (or standard-display-table
1024 (setq standard-display-table
(make-display-table)))
1025 (aset standard-display-table
(car char-repl
) (cdr char-repl
))))
1026 (setq internal--text-quoting-flag t
)
1028 ;; Re-evaluate predefined variables whose initial value depends on
1029 ;; the runtime context.
1030 (mapc 'custom-reevaluate-setting
1031 ;; Initialize them in the same order they were loaded, in case there
1032 ;; are dependencies between them.
1033 (prog1 (nreverse custom-delayed-init-variables
)
1034 (setq custom-delayed-init-variables nil
)))
1036 (normal-erase-is-backspace-setup-frame)
1038 ;; Register default TTY colors for the case the terminal hasn't a
1039 ;; terminal init file. We do this regardless of whether the terminal
1040 ;; supports colors or not and regardless the current display type,
1041 ;; since users can connect to color-capable terminals and also
1042 ;; switch color support on or off in mid-session by setting the
1043 ;; tty-color-mode frame parameter.
1044 ;; Exception: the `pc' ``window system'' has only 16 fixed colors,
1045 ;; and they are already set at this point by a suitable method of
1046 ;; window-system-initialization.
1047 (or (eq initial-window-system
'pc
)
1048 (tty-register-default-colors))
1050 (let ((old-scalable-fonts-allowed scalable-fonts-allowed
)
1051 (old-face-ignored-fonts face-ignored-fonts
))
1053 ;; Run the site-start library if it exists. The point of this file is
1054 ;; that it is run before .emacs. There is no point in doing this after
1055 ;; .emacs; that is useless.
1056 ;; Note that user-init-file is nil at this point. Code that might
1057 ;; be loaded from site-run-file and wants to test if -q was given
1058 ;; should check init-file-user instead, since that is already set.
1059 ;; See cus-edit.el for an example.
1061 (load site-run-file t t
))
1063 ;; Sites should not disable this. Only individuals should disable
1064 ;; the startup screen.
1065 (setq inhibit-startup-screen nil
)
1067 ;; Warn for invalid user name.
1068 (when init-file-user
1069 (if (string-match "[~/:\n]" init-file-user
)
1070 (display-warning 'initialization
1071 (format "Invalid user name %s"
1074 (if (file-directory-p (expand-file-name
1075 ;; We don't support ~USER on MS-Windows
1076 ;; and MS-DOS except for the current
1077 ;; user, and always load .emacs from
1078 ;; the current user's home directory
1079 ;; (see below). So always check "~",
1080 ;; even if invoked with "-u USER", or
1081 ;; if $USER or $LOGNAME are set to
1082 ;; something different.
1083 (if (memq system-type
'(windows-nt ms-dos
))
1085 (concat "~" init-file-user
))))
1087 (display-warning 'initialization
1088 (format "User %s has no home directory"
1089 (if (equal init-file-user
"")
1090 (user-real-login-name)
1094 ;; Load that user's init file, or the default one, or none.
1095 (let (debug-on-error-from-init-file
1096 debug-on-error-should-be-set
1097 (debug-on-error-initial
1098 (if (eq init-file-debug t
) 'startup init-file-debug
))
1099 (orig-enable-multibyte (default-value 'enable-multibyte-characters
)))
1100 (let ((debug-on-error debug-on-error-initial
)
1101 ;; This function actually reads the init files.
1106 (let ((user-init-file-1
1108 ((eq system-type
'ms-dos
)
1109 (concat "~" init-file-user
"/_emacs"))
1110 ((not (eq system-type
'windows-nt
))
1111 (concat "~" init-file-user
"/.emacs"))
1112 ;; Else deal with the Windows situation
1113 ((directory-files "~" nil
"^\\.emacs\\(\\.elc?\\)?$")
1114 ;; Prefer .emacs on Windows.
1116 ((directory-files "~" nil
"^_emacs\\(\\.elc?\\)?$")
1117 ;; Also support _emacs for compatibility, but warn about it.
1118 (push '(initialization
1119 "`_emacs' init file is deprecated, please use `.emacs'")
1120 delayed-warnings-list
)
1122 (t ;; But default to .emacs if _emacs does not exist.
1124 ;; This tells `load' to store the file name found
1125 ;; into user-init-file.
1126 (setq user-init-file t
)
1127 (load user-init-file-1 t t
)
1129 (when (eq user-init-file t
)
1130 ;; If we did not find ~/.emacs, try
1131 ;; ~/.emacs.d/init.el.
1135 (file-name-as-directory
1136 (concat "~" init-file-user
"/.emacs.d")))))
1137 (load otherfile t t
)
1139 ;; If we did not find the user's init file,
1140 ;; set user-init-file conclusively.
1141 ;; Don't let it be set from default.el.
1142 (when (eq user-init-file t
)
1143 (setq user-init-file user-init-file-1
))))
1145 ;; If we loaded a compiled file, set
1146 ;; `user-init-file' to the source version if that
1148 (when (and user-init-file
1149 (equal (file-name-extension user-init-file
)
1151 (let* ((source (file-name-sans-extension user-init-file
))
1152 (alt (concat source
".el")))
1153 (setq source
(cond ((file-exists-p alt
) alt
)
1154 ((file-exists-p source
) source
)
1157 (when (file-newer-than-file-p source user-init-file
)
1158 (message "Warning: %s is newer than %s"
1159 source user-init-file
)
1161 (setq user-init-file source
))))
1163 (unless inhibit-default-init
1164 (let ((inhibit-startup-screen nil
))
1165 ;; Users are supposed to be told their rights.
1166 ;; (Plus how to get help and how to undo.)
1167 ;; Don't you dare turn this off for anyone
1169 (load "default" t t
)))))))))
1171 ;; Do this without a condition-case if the user wants to debug.
1173 (condition-case error
1176 (setq init-file-had-error nil
))
1180 (format "An error occurred while loading ‘%s’:\n\n%s%s%s\n\n\
1181 To ensure normal operation, you should investigate and remove the
1182 cause of the error in your initialization file. Start Emacs with
1183 the ‘--debug-init’ option to view a complete error backtrace."
1185 (get (car error
) 'error-message
)
1186 (if (cdr error
) ": " "")
1187 (mapconcat (lambda (s) (prin1-to-string s t
))
1190 (setq init-file-had-error t
))))
1192 (if (and deactivate-mark transient-mark-mode
)
1193 (with-current-buffer (window-buffer)
1196 ;; If the user has a file of abbrevs, read it (unless -batch).
1197 (when (and (not noninteractive
)
1198 (file-exists-p abbrev-file-name
)
1199 (file-readable-p abbrev-file-name
))
1200 (quietly-read-abbrev-file abbrev-file-name
))
1202 ;; If the abbrevs came entirely from the init file or the
1203 ;; abbrevs file, they do not need saving.
1204 (setq abbrevs-changed nil
)
1206 ;; If we can tell that the init file altered debug-on-error,
1207 ;; arrange to preserve the value that it set up.
1208 (or (eq debug-on-error debug-on-error-initial
)
1209 (setq debug-on-error-should-be-set t
1210 debug-on-error-from-init-file debug-on-error
)))
1211 (if debug-on-error-should-be-set
1212 (setq debug-on-error debug-on-error-from-init-file
))
1213 (unless (or (default-value 'enable-multibyte-characters
)
1214 (eq orig-enable-multibyte
(default-value
1215 'enable-multibyte-characters
)))
1216 ;; Init file changed to unibyte. Reset existing multibyte
1217 ;; buffers (probably *scratch*, *Messages*, *Minibuf-0*).
1218 ;; Arguably this should only be done if they're free of
1219 ;; multibyte characters.
1220 (mapc (lambda (buffer)
1221 (with-current-buffer buffer
1222 (if enable-multibyte-characters
1223 (set-buffer-multibyte nil
))))
1225 ;; Also re-set the language environment in case it was
1226 ;; originally done before unibyte was set and is sensitive to
1227 ;; unibyte (display table, terminal coding system &c).
1228 (set-language-environment current-language-environment
)))
1230 ;; Do this here in case the init file sets mail-host-address.
1231 (if (equal user-mail-address
"")
1232 (setq user-mail-address
(or (getenv "EMAIL")
1233 (concat (user-login-name) "@"
1234 (or mail-host-address
1237 ;; If parameter have been changed in the init file which influence
1238 ;; face realization, clear the face cache so that new faces will
1240 (unless (and (eq scalable-fonts-allowed old-scalable-fonts-allowed
)
1241 (eq face-ignored-fonts old-face-ignored-fonts
))
1242 (clear-face-cache)))
1244 ;; If any package directory exists, initialize the package system.
1246 package-enable-at-startup
1247 (catch 'package-dir-found
1249 (if (boundp 'package-directory-list
)
1250 (setq dirs package-directory-list
)
1251 (dolist (f load-path
)
1253 (equal (file-name-nondirectory f
) "site-lisp")
1254 (push (expand-file-name "elpa" f
) dirs
))))
1255 (push (if (boundp 'package-user-dir
)
1257 (locate-user-emacs-file "elpa"))
1260 (when (file-directory-p dir
)
1261 (dolist (subdir (directory-files dir
))
1262 (when (let ((subdir (expand-file-name subdir dir
)))
1263 (and (file-directory-p subdir
)
1266 (package--description-file subdir
)
1268 (throw 'package-dir-found t
)))))))
1269 (package-initialize))
1271 (setq after-init-time
(current-time))
1272 ;; Display any accumulated warnings after all functions in
1273 ;; `after-init-hook' like `desktop-read' have finalized possible
1274 ;; changes in the window configuration.
1275 (run-hooks 'after-init-hook
'delayed-warnings-hook
)
1277 ;; If *scratch* exists and init file didn't change its mode, initialize it.
1278 (if (get-buffer "*scratch*")
1279 (with-current-buffer "*scratch*"
1280 (if (eq major-mode
'fundamental-mode
)
1281 (funcall initial-major-mode
))))
1283 ;; Load library for our terminal type.
1284 ;; User init file can set term-file-prefix to nil to prevent this.
1285 (unless (or noninteractive
1286 initial-window-system
1288 (tty-run-terminal-initialization (selected-frame) nil t
))
1290 ;; Update the out-of-memory error message based on user's key bindings
1291 ;; for save-some-buffers.
1292 (setq memory-signal-data
1294 (substitute-command-keys "Memory exhausted--use \\[save-some-buffers] then exit and restart Emacs")))
1296 ;; Process the remaining args.
1297 (command-line-1 (cdr command-line-args
))
1299 ;; This is a problem because, e.g. if emacs.d/gnus.el exists,
1300 ;; trying to load gnus could load the wrong file.
1301 ;; OK, it would not matter if .emacs.d were at the end of load-path.
1302 ;; but for the sake of simplicity, we discourage it full-stop.
1303 ;; Ref eg http://lists.gnu.org/archive/html/emacs-devel/2012-03/msg00056.html
1305 ;; A bad element could come from user-emacs-file, the command line,
1306 ;; or EMACSLOADPATH, so we basically always have to check.
1308 (dolist (dir load-path
)
1311 (string-equal (file-name-as-directory (expand-file-name dir
))
1312 (expand-file-name user-emacs-directory
))
1314 (display-warning 'initialization
1315 (format "Your ‘load-path’ seems to contain
1316 your ‘.emacs.d’ directory: %s\n\
1317 This is likely to cause problems...\n\
1318 Consider using a subdirectory instead, e.g.: %s"
1319 dir
(expand-file-name
1320 "lisp" user-emacs-directory
))
1323 ;; If -batch, terminate after processing the command options.
1324 (if noninteractive
(kill-emacs t
))
1326 ;; In daemon mode, start the server to allow clients to connect.
1327 ;; This is done after loading the user's init file and after
1328 ;; processing all command line arguments to allow e.g. `server-name'
1329 ;; to be changed before the server starts.
1330 (let ((dn (daemonp)))
1332 (when (stringp dn
) (setq server-name dn
))
1335 (daemon-initialized)
1338 "Unable to start daemon: Emacs server named %S already running"
1340 (message "Unable to start the daemon.\nAnother instance of Emacs is running the server, either as daemon or interactively.\nYou can use emacsclient to connect to that Emacs process."))
1343 ;; Run emacs-session-restore (session management) if started by
1344 ;; the session manager and we have a session manager connection.
1345 (if (and (boundp 'x-session-previous-id
)
1346 (stringp x-session-previous-id
))
1348 (emacs-session-restore x-session-previous-id
))))
1350 (defun x-apply-session-resources ()
1351 "Apply X resources which specify initial values for Emacs variables.
1352 This is called from a window-system initialization function, such
1353 as `x-initialize-window-system' for X, either at startup (prior
1354 to reading the init file), or afterwards when the user first
1355 opens a graphical frame.
1357 This can set the values of `menu-bar-mode', `tool-bar-mode', and
1358 `no-blinking-cursor', as well as the `cursor' face. Changed
1359 settings will be marked as \"CHANGED outside of Customize\"."
1360 (let ((no-vals '("no" "off" "false" "0"))
1361 (settings '(("menuBar" "MenuBar" menu-bar-mode nil
)
1362 ("toolBar" "ToolBar" tool-bar-mode nil
)
1363 ("cursorBlink" "CursorBlink" no-blinking-cursor t
))))
1364 (dolist (x settings
)
1365 (if (member (x-get-resource (nth 0 x
) (nth 1 x
)) no-vals
)
1366 (set (nth 2 x
) (nth 3 x
)))))
1367 (let ((color (x-get-resource "cursorColor" "Foreground")))
1369 (put 'cursor
'theme-face
1370 `((changed ((t :background
,color
)))))
1371 (put 'cursor
'face-modified t
))))
1373 (defcustom initial-scratch-message
(purecopy "\
1374 ;; This buffer is for notes you don't want to save, and for Lisp evaluation.
1375 ;; If you want to create a file, visit that file with C-x C-f,
1376 ;; then enter the text in that file's own buffer.
1379 "Initial message displayed in *scratch* buffer at startup.
1380 If this is nil, no message will be displayed."
1381 :type
'(choice (text :tag
"Message")
1382 (const :tag
"none" nil
))
1383 :group
'initialization
)
1386 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1387 ;;; Fancy splash screen
1388 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1390 (defconst fancy-startup-text
1391 `((:face
(variable-pitch font-lock-comment-face
)
1394 ,(lambda (_button) (browse-url "http://www.gnu.org/software/emacs/"))
1395 "Browse http://www.gnu.org/software/emacs/")
1396 ", one component of the "
1399 (if (eq system-type
'gnu
/linux
)
1401 ,(lambda (_button) (browse-url "http://www.gnu.org/gnu/linux-and-gnu.html"))
1402 "Browse http://www.gnu.org/gnu/linux-and-gnu.html")
1403 `("GNU" ,(lambda (_button)
1404 (browse-url "http://www.gnu.org/gnu/thegnuproject.html"))
1405 "Browse http://www.gnu.org/gnu/thegnuproject.html")))
1406 " operating system.\n\n"
1407 :face variable-pitch
1408 :link
("Emacs Tutorial" ,(lambda (_button) (help-with-tutorial)))
1409 "\tLearn basic keystroke commands"
1411 (let* ((en "TUTORIAL")
1412 (tut (or (get-language-info current-language-environment
1415 (title (with-temp-buffer
1416 (insert-file-contents
1417 (expand-file-name tut tutorial-directory
)
1418 ;; We used to read only the first 256 bytes of
1419 ;; the tutorial, but that prevents the coding:
1420 ;; setting, if any, in file-local variables
1421 ;; section to be seen by insert-file-contents,
1422 ;; and results in gibberish when the language
1423 ;; environment's preferred encoding is
1424 ;; different from what the file-local variable
1425 ;; says. One case in point is Hebrew.
1427 (search-forward ".")
1428 (buffer-substring (point-min) (1- (point))))))
1429 ;; If there is a specific tutorial for the current language
1430 ;; environment and it is not English, append its title.
1431 (if (string= en tut
)
1433 (concat " (" title
")"))))
1435 :link
("Emacs Guided Tour"
1437 (browse-url "http://www.gnu.org/software/emacs/tour/"))
1438 "Browse http://www.gnu.org/software/emacs/tour/")
1439 "\tOverview of Emacs features at gnu.org\n"
1440 :link
("View Emacs Manual" ,(lambda (_button) (info-emacs-manual)))
1441 "\tView the Emacs manual using Info\n"
1442 :link
("Absence of Warranty" ,(lambda (_button) (describe-no-warranty)))
1443 "\tGNU Emacs comes with "
1444 :face
(variable-pitch (:slant oblique
))
1445 "ABSOLUTELY NO WARRANTY\n"
1446 :face variable-pitch
1447 :link
("Copying Conditions" ,(lambda (_button) (describe-copying)))
1448 "\tConditions for redistributing and changing Emacs\n"
1449 :link
("Ordering Manuals" ,(lambda (_button) (view-order-manuals)))
1450 "\tPurchasing printed copies of manuals\n"
1452 "A list of texts to show in the middle part of splash screens.
1453 Each element in the list should be a list of strings or pairs
1454 `:face FACE', like `fancy-splash-insert' accepts them.")
1456 (defconst fancy-about-text
1457 `((:face
(variable-pitch font-lock-comment-face
)
1460 ,(lambda (_button) (browse-url "http://www.gnu.org/software/emacs/"))
1461 "Browse http://www.gnu.org/software/emacs/")
1462 ", one component of the "
1465 (if (eq system-type
'gnu
/linux
)
1468 (browse-url "http://www.gnu.org/gnu/linux-and-gnu.html"))
1469 "Browse http://www.gnu.org/gnu/linux-and-gnu.html")
1470 `("GNU" ,(lambda (_button) (describe-gnu-project))
1471 "Display info on the GNU project.")))
1472 " operating system.\n"
1473 :face
(variable-pitch font-lock-builtin-face
)
1475 ,(lambda () (emacs-version))
1477 :face
(variable-pitch (:height
0.8))
1478 ,(lambda () emacs-copyright
)
1480 :face variable-pitch
1483 (view-file (expand-file-name "AUTHORS" data-directory
))
1484 (goto-char (point-min))))
1485 "\tMany people have contributed code included in GNU Emacs\n"
1486 :link
("Contributing"
1487 ,(lambda (_button) (info "(emacs)Contributing")))
1488 "\tHow to contribute improvements to Emacs\n"
1490 :link
("GNU and Freedom" ,(lambda (_button) (describe-gnu-project)))
1491 "\tWhy we developed GNU Emacs, and the GNU operating system\n"
1492 :link
("Absence of Warranty" ,(lambda (_button) (describe-no-warranty)))
1493 "\tGNU Emacs comes with "
1494 :face
(variable-pitch (:slant oblique
))
1495 "ABSOLUTELY NO WARRANTY\n"
1496 :face variable-pitch
1497 :link
("Copying Conditions" ,(lambda (_button) (describe-copying)))
1498 "\tConditions for redistributing and changing Emacs\n"
1499 :link
("Getting New Versions" ,(lambda (_button) (describe-distribution)))
1500 "\tHow to obtain the latest version of Emacs\n"
1501 :link
("Ordering Manuals" ,(lambda (_button) (view-order-manuals)))
1502 "\tBuying printed manuals from the FSF\n"
1504 :link
("Emacs Tutorial" ,(lambda (_button) (help-with-tutorial)))
1505 "\tLearn basic Emacs keystroke commands"
1507 (let* ((en "TUTORIAL")
1508 (tut (or (get-language-info current-language-environment
1511 (title (with-temp-buffer
1512 (insert-file-contents
1513 (expand-file-name tut tutorial-directory
)
1514 ;; Read the entire file, to make sure any
1515 ;; coding cookies and other local variables
1518 (search-forward ".")
1519 (buffer-substring (point-min) (1- (point))))))
1520 ;; If there is a specific tutorial for the current language
1521 ;; environment and it is not English, append its title.
1522 (if (string= en tut
)
1524 (concat " (" title
")"))))
1526 :link
("Emacs Guided Tour"
1528 (browse-url "http://www.gnu.org/software/emacs/tour/"))
1529 "Browse http://www.gnu.org/software/emacs/tour/")
1530 "\tSee an overview of Emacs features at gnu.org"))
1531 "A list of texts to show in the middle part of the About screen.
1532 Each element in the list should be a list of strings or pairs
1533 `:face FACE', like `fancy-splash-insert' accepts them.")
1536 (defgroup fancy-splash-screen
()
1537 "Fancy splash screen when Emacs starts."
1539 :group
'initialization
)
1541 (defcustom fancy-splash-image nil
1542 "The image to show in the splash screens, or nil for defaults."
1543 :group
'fancy-splash-screen
1544 :type
'(choice (const :tag
"Default" nil
)
1545 (file :tag
"File")))
1548 (defvar splash-screen-keymap
1549 (let ((map (make-sparse-keymap)))
1550 (suppress-keymap map
)
1551 (set-keymap-parent map button-buffer-map
)
1552 (define-key map
"\C-?" 'scroll-down-command
)
1553 (define-key map
[?\S-\
] 'scroll-down-command
)
1554 (define-key map
" " 'scroll-up-command
)
1555 (define-key map
"q" 'exit-splash-screen
)
1557 "Keymap for splash screen buffer.")
1559 ;; These are temporary storage areas for the splash screen display.
1561 (defun fancy-splash-insert (&rest args
)
1562 "Insert text into the current buffer, with faces.
1563 Arguments from ARGS should be either strings; functions called
1564 with no args that return a string; pairs `:face FACE', where FACE
1565 is a face specification usable with `put-text-property'; or pairs
1566 `:link LINK' where LINK is a list of arguments to pass to
1567 `insert-button', of the form (LABEL ACTION [HELP-ECHO]), which
1568 specifies the button's label, `action' property and help-echo string.
1569 FACE and LINK can also be functions, which are evaluated to obtain
1570 a face or button specification."
1571 (let ((current-face nil
))
1573 (cond ((eq (car args
) :face
)
1574 (setq args
(cdr args
) current-face
(car args
))
1575 (if (functionp current-face
)
1576 (setq current-face
(funcall current-face
))))
1577 ((eq (car args
) :link
)
1578 (setq args
(cdr args
))
1579 (let ((spec (car args
)))
1580 (if (functionp spec
)
1581 (setq spec
(funcall spec
)))
1582 (insert-button (car spec
)
1583 'face
(list 'link current-face
)
1585 'help-echo
(concat "mouse-2, RET: "
1587 "Follow this link"))
1589 (t (insert (propertize (let ((it (car args
)))
1594 'help-echo
(startup-echo-area-message)))))
1595 (setq args
(cdr args
)))))
1597 (declare-function image-size
"image.c" (spec &optional pixels frame
))
1599 (defun fancy-splash-image-file ()
1600 (cond ((stringp fancy-splash-image
) fancy-splash-image
)
1602 (cond ((<= (display-planes) 8)
1603 (if (image-type-available-p 'xpm
)
1606 ((or (image-type-available-p 'svg
)
1607 (image-type-available-p 'imagemagick
))
1609 ((image-type-available-p 'png
)
1611 ((image-type-available-p 'xpm
)
1616 (defun fancy-splash-head ()
1617 "Insert the head part of the splash screen into the current buffer."
1618 (let* ((image-file (fancy-splash-image-file))
1619 (img (create-image image-file
))
1620 (image-width (and img
(car (image-size img
))))
1621 (window-width (window-width)))
1623 (when (> window-width image-width
)
1624 ;; Center the image in the window.
1625 (insert (propertize " " 'display
1626 `(space :align-to
(+ center
(-0.5 .
,img
)))))
1628 ;; Change the color of the XPM version of the splash image
1629 ;; so that it is visible with a dark frame background.
1630 (when (and (memq 'xpm img
)
1631 (eq (frame-parameter nil
'background-mode
) 'dark
))
1632 (setq img
(append img
'(:color-symbols
(("#000000" .
"gray30"))))))
1634 ;; Insert the image with a help-echo and a link.
1635 (make-button (prog1 (point) (insert-image img
)) (point)
1637 'help-echo
"mouse-2, RET: Browse http://www.gnu.org/"
1638 'action
(lambda (_button) (browse-url "http://www.gnu.org/"))
1642 (defun fancy-startup-tail (&optional concise
)
1643 "Insert the tail part of the splash screen into the current buffer."
1645 (fancy-splash-insert
1646 :face
'variable-pitch
1648 :link
`("Open a File"
1649 ,(lambda (_button) (call-interactively 'find-file
))
1650 "Specify a new file's name, to edit the file")
1652 :link
`("Open Home Directory"
1653 ,(lambda (_button) (dired "~"))
1654 "Open your home directory, to operate on its files")
1656 :link
`("Customize Startup"
1657 ,(lambda (_button) (customize-group 'initialization
))
1658 "Change initialization settings including this screen")
1660 (fancy-splash-insert
1661 :face
'variable-pitch
"To quit a partially entered command, type "
1662 :face
'default
"Control-g"
1663 :face
'variable-pitch
".\n")
1664 (fancy-splash-insert :face
`(variable-pitch font-lock-builtin-face
)
1668 :face
'(variable-pitch (:height
0.8))
1671 (when auto-save-list-file-prefix
1672 (let ((dir (file-name-directory auto-save-list-file-prefix
))
1673 (name (file-name-nondirectory auto-save-list-file-prefix
))
1675 ;; Don't warn if the directory for auto-save-list files does not
1677 (and (file-directory-p dir
)
1678 (setq files
(directory-files dir nil
(concat "\\`" name
) t
))
1679 (fancy-splash-insert :face
'(variable-pitch font-lock-comment-face
)
1680 (if (= (length files
) 1)
1681 "\nAn auto-save file list was found. "
1682 "\nAuto-save file lists were found. ")
1683 "If an Emacs session crashed recently,\ntype "
1684 :link
`("M-x recover-session RET"
1688 " to recover the files you were editing."))))
1691 (fancy-splash-insert
1692 :face
'variable-pitch
"\n"
1693 :link
`("Dismiss this startup screen"
1695 (when startup-screen-inhibit-startup-screen
1696 (customize-set-variable 'inhibit-startup-screen t
)
1697 (customize-mark-to-save 'inhibit-startup-screen
)
1699 (let ((w (get-buffer-window "*GNU Emacs*")))
1700 (and w
(not (one-window-p)) (delete-window w
)))
1701 (kill-buffer "*GNU Emacs*")))
1703 (when (or user-init-file custom-file
)
1704 (let ((checked (create-image "checked.xpm"
1705 nil nil
:ascent
'center
))
1706 (unchecked (create-image "unchecked.xpm"
1707 nil nil
:ascent
'center
)))
1711 :off-glyph unchecked
1712 'checked nil
'display unchecked
'follow-link t
1713 'action
(lambda (button)
1714 (if (overlay-get button
'checked
)
1715 (progn (overlay-put button
'checked nil
)
1716 (overlay-put button
'display
1717 (overlay-get button
:off-glyph
))
1718 (setq startup-screen-inhibit-startup-screen
1720 (overlay-put button
'checked t
)
1721 (overlay-put button
'display
1722 (overlay-get button
:on-glyph
))
1723 (setq startup-screen-inhibit-startup-screen t
)))))
1724 (fancy-splash-insert :face
'(variable-pitch (:height
0.9))
1725 " Never show it again."))))
1727 (defun exit-splash-screen ()
1728 "Stop displaying the splash screen buffer."
1732 (defun fancy-startup-screen (&optional concise
)
1733 "Display fancy startup screen.
1734 If CONCISE is non-nil, display a concise version of the
1735 splash screen in another window."
1736 (let ((splash-buffer (get-buffer-create "*GNU Emacs*")))
1737 (with-current-buffer splash-buffer
1738 (let ((inhibit-read-only t
))
1740 (setq default-directory command-line-default-directory
)
1741 (make-local-variable 'startup-screen-inhibit-startup-screen
)
1742 (if pure-space-overflow
1743 (insert pure-space-overflow-message
))
1745 (fancy-splash-head))
1746 (dolist (text fancy-startup-text
)
1747 (apply #'fancy-splash-insert text
)
1749 (skip-chars-backward "\n")
1750 (delete-region (point) (point-max))
1752 (fancy-startup-tail concise
))
1753 (use-local-map splash-screen-keymap
)
1754 (setq-local browse-url-browser-function
'eww-browse-url
)
1757 (set-buffer-modified-p nil
)
1758 (if (and view-read-only
(not view-mode
))
1759 (view-mode-enter nil
'kill-buffer
))
1760 (goto-char (point-min))
1761 (forward-line (if concise
2 4)))
1764 (display-buffer splash-buffer
)
1765 ;; If the splash screen is in a split window, fit it.
1766 (let ((window (get-buffer-window splash-buffer t
)))
1768 (eq window
(selected-window))
1769 (eq window
(next-window window
))
1770 (fit-window-to-buffer window
))))
1771 (switch-to-buffer splash-buffer
))))
1773 (defun fancy-about-screen ()
1774 "Display fancy About screen."
1775 (let ((frame (fancy-splash-frame)))
1776 (save-selected-window
1777 (select-frame frame
)
1778 (switch-to-buffer "*About GNU Emacs*")
1779 (setq buffer-undo-list t
)
1780 (let ((inhibit-read-only t
))
1782 (if pure-space-overflow
1783 (insert pure-space-overflow-message
))
1785 (dolist (text fancy-about-text
)
1786 (apply #'fancy-splash-insert text
)
1788 (set-buffer-modified-p nil
)
1789 (goto-char (point-min))
1790 (force-mode-line-update))
1791 (use-local-map splash-screen-keymap
)
1792 (setq-local browse-url-browser-function
'eww-browse-url
)
1794 (setq buffer-read-only t
)
1795 (goto-char (point-min))
1798 (defun fancy-splash-frame ()
1799 "Return the frame to use for the fancy splash screen.
1800 Returning non-nil does not mean we should necessarily
1801 use the fancy splash screen, but if we do use it,
1802 we put it on this frame."
1804 ;; MS-Windows needs this to have a chance to make the initial
1806 (if (eq (window-system) 'w32
)
1808 (dolist (frame (append (frame-list) (list (selected-frame))))
1809 (if (and (frame-visible-p frame
)
1810 (not (window-minibuffer-p (frame-selected-window frame
))))
1811 (setq chosen-frame frame
)))
1814 (defun use-fancy-splash-screens-p ()
1815 "Return t if fancy splash screens should be used."
1816 (when (and (display-graphic-p)
1817 (or (and (display-color-p)
1818 (image-type-available-p 'xpm
))
1819 (image-type-available-p 'pbm
)))
1820 (let ((frame (fancy-splash-frame)))
1822 (let* ((img (create-image (fancy-splash-image-file)))
1823 (image-height (and img
(cdr (image-size img nil frame
))))
1824 ;; We test frame-height so that, if the frame is split
1825 ;; by displaying a warning, that doesn't cause the normal
1826 ;; splash screen to be used.
1827 (frame-height (1- (frame-height frame
))))
1828 (> frame-height
(+ image-height
19)))))))
1831 (defun normal-splash-screen (&optional startup concise
)
1832 "Display non-graphic splash screen.
1833 If optional argument STARTUP is non-nil, display the startup screen
1834 after Emacs starts. If STARTUP is nil, display the About screen.
1835 If CONCISE is non-nil, display a concise version of the
1836 splash screen in another window."
1837 (let ((splash-buffer (get-buffer-create "*About GNU Emacs*")))
1838 (with-current-buffer splash-buffer
1839 (setq buffer-read-only nil
)
1841 (setq default-directory command-line-default-directory
)
1842 (set (make-local-variable 'tab-width
) 8)
1844 (if pure-space-overflow
1845 (insert pure-space-overflow-message
))
1847 ;; The convention for this piece of code is that
1848 ;; each piece of output starts with one or two newlines
1849 ;; and does not end with any newlines.
1850 (insert (if startup
"Welcome to GNU Emacs" "This is GNU Emacs"))
1852 (if (eq system-type
'gnu
/linux
)
1853 ", one component of the GNU/Linux operating system.\n"
1854 ", a part of the GNU operating system.\n"))
1857 (if (display-mouse-p)
1858 ;; The user can use the mouse to activate menus
1859 ;; so give help in terms of menu items.
1860 (normal-mouse-startup-screen)
1862 ;; No mouse menus, so give help using kbd commands.
1863 (normal-no-mouse-startup-screen))
1865 (normal-about-screen))
1867 ;; The rest of the startup screen is the same on all
1868 ;; kinds of terminals.
1870 ;; Give information on recovering, if there was a crash.
1872 auto-save-list-file-prefix
1873 ;; Don't signal an error if the
1874 ;; directory for auto-save-list files
1875 ;; does not yet exist.
1876 (file-directory-p (file-name-directory
1877 auto-save-list-file-prefix
))
1879 (file-name-directory auto-save-list-file-prefix
)
1882 (regexp-quote (file-name-nondirectory
1883 auto-save-list-file-prefix
)))
1885 (insert "\n\nIf an Emacs session crashed recently, "
1886 "type Meta-x recover-session RET\nto recover"
1887 " the files you were editing.\n"))
1889 (use-local-map splash-screen-keymap
)
1891 ;; Display the input that we set up in the buffer.
1892 (set-buffer-modified-p nil
)
1893 (setq buffer-read-only t
)
1894 (if (and view-read-only
(not view-mode
))
1895 (view-mode-enter nil
'kill-buffer
))
1896 (if startup
(rename-buffer "*GNU Emacs*" t
))
1897 (goto-char (point-min)))
1899 (display-buffer splash-buffer
)
1900 (switch-to-buffer splash-buffer
))))
1902 (defun normal-mouse-startup-screen ()
1903 ;; The user can use the mouse to activate menus
1904 ;; so give help in terms of menu items.
1906 To follow a link, click Mouse-1 on it, or move to it and type RET.
1907 To quit a partially entered command, type Control-g.\n")
1909 (insert "\nImportant Help menu items:\n")
1910 (insert-button "Emacs Tutorial"
1911 'action
(lambda (_button) (help-with-tutorial))
1913 (insert "\t\tLearn basic Emacs keystroke commands\n")
1914 (insert-button "Read the Emacs Manual"
1915 'action
(lambda (_button) (info-emacs-manual))
1917 (insert "\tView the Emacs manual using Info\n")
1918 (insert-button "\(Non)Warranty"
1919 'action
(lambda (_button) (describe-no-warranty))
1921 (insert "\t\tGNU Emacs comes with ABSOLUTELY NO WARRANTY\n")
1922 (insert-button "Copying Conditions"
1923 'action
(lambda (_button) (describe-copying))
1925 (insert "\tConditions for redistributing and changing Emacs\n")
1926 (insert-button "More Manuals / Ordering Manuals"
1927 'action
(lambda (_button) (view-order-manuals))
1929 (insert " How to order printed manuals from the FSF\n")
1931 (insert "\nUseful tasks:\n")
1932 (insert-button "Visit New File"
1933 'action
(lambda (_button) (call-interactively 'find-file
))
1935 (insert "\t\tSpecify a new file's name, to edit the file\n")
1936 (insert-button "Open Home Directory"
1937 'action
(lambda (_button) (dired "~"))
1939 (insert "\tOpen your home directory, to operate on its files\n")
1940 (insert-button "Customize Startup"
1941 'action
(lambda (_button) (customize-group 'initialization
))
1943 (insert "\tChange initialization settings including this screen\n")
1945 (insert "\n" (emacs-version)
1946 "\n" emacs-copyright
))
1948 (defun normal-no-mouse-startup-screen ()
1949 "Show a splash screen suitable for displays without mouse support."
1950 (let* ((c-h-accessible
1951 ;; If normal-erase-is-backspace is used on a tty, there's
1952 ;; no way to invoke C-h and you have to use F1 instead.
1953 (or (not (char-table-p keyboard-translate-table
))
1954 (eq (aref keyboard-translate-table ?\C-h
) ?\C-h
)))
1955 (minor-mode-overriding-map-alist
1956 (cons (cons (not c-h-accessible
)
1957 ;; If C-h can't be invoked, temporarily disable its
1958 ;; binding, so where-is uses alternative bindings.
1959 (let ((map (make-sparse-keymap)))
1960 (define-key map
[?\C-h
] 'undefined
)
1962 minor-mode-overriding-map-alist
)))
1964 (insert (format "\nGet help\t %s\n"
1965 (let ((where (where-is-internal 'help-command nil t
)))
1967 ((equal where
[?\C-h
])
1968 "C-h (Hold down CTRL and press h)")
1969 (where (key-description where
))
1971 (insert-button "Emacs manual"
1972 'action
(lambda (_button) (info-emacs-manual))
1974 (insert (substitute-command-keys"\t \\[info-emacs-manual]\t"))
1975 (insert-button "Browse manuals"
1976 'action
(lambda (_button) (Info-directory))
1978 (insert (substitute-command-keys "\t \\[info]\n"))
1979 (insert-button "Emacs tutorial"
1980 'action
(lambda (_button) (help-with-tutorial))
1982 (insert (substitute-command-keys
1983 "\t \\[help-with-tutorial]\tUndo changes\t \\[undo]\n"))
1984 (insert-button "Buy manuals"
1985 'action
(lambda (_button) (view-order-manuals))
1987 (insert (substitute-command-keys
1988 "\t \\[view-order-manuals]\tExit Emacs\t \\[save-buffers-kill-terminal]")))
1990 ;; Say how to use the menu bar with the keyboard.
1992 (insert-button "Activate menubar"
1993 'action
(lambda (_button) (tmm-menubar))
1995 (if (and (eq (key-binding "\M-`") 'tmm-menubar
)
1996 (eq (key-binding [f10]) 'tmm-menubar))
1997 (insert " F10 or ESC ` or M-`")
1998 (insert (substitute-command-keys " \\[tmm-menubar]")))
2000 ;; Many users seem to have problems with these.
2002 \(`C-' means use the CTRL key. `M-' means use the Meta (or Alt) key.
2003 If you have no Meta key, you may instead type ESC followed by the character.)")
2005 ;; Insert links to useful tasks
2006 (insert "\nUseful tasks:\n")
2008 (insert-button "Visit New File"
2009 'action (lambda (_button) (call-interactively 'find-file))
2012 (insert-button "Open Home Directory"
2013 'action (lambda (_button) (dired "~"))
2017 (insert-button "Customize Startup"
2018 'action (lambda (_button) (customize-group 'initialization))
2021 (insert-button "Open *scratch* buffer"
2022 'action (lambda (_button) (switch-to-buffer
2023 (get-buffer-create "*scratch*")))
2026 (insert "\n" (emacs-version) "\n" emacs-copyright "\n")
2027 (insert (substitute-command-keys
2029 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type \\[describe-no-warranty] for "))
2030 (insert-button "full details"
2031 'action (lambda (_button) (describe-no-warranty))
2033 (insert (substitute-command-keys ".
2034 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
2035 of Emacs and modify it; type \\[describe-copying] to see "))
2036 (insert-button "the conditions"
2037 'action (lambda (_button) (describe-copying))
2039 (insert (substitute-command-keys".
2040 Type \\[describe-distribution] for information on "))
2041 (insert-button "getting the latest version"
2042 'action (lambda (_button) (describe-distribution))
2046 (defun normal-about-screen ()
2047 (insert "\n" (emacs-version) "\n" emacs-copyright "\n\n")
2049 (insert "To follow a link, click Mouse-1 on it, or move to it and type RET.\n\n")
2051 (insert-button "Authors"
2054 (view-file (expand-file-name "AUTHORS" data-directory))
2055 (goto-char (point-min)))
2057 (insert "\t\tMany people have contributed code included in GNU Emacs\n")
2059 (insert-button "Contributing"
2061 (lambda (_button) (info "(emacs)Contributing"))
2063 (insert "\tHow to contribute improvements to Emacs\n\n")
2065 (insert-button "GNU and Freedom"
2066 'action (lambda (_button) (describe-gnu-project))
2068 (insert "\t\tWhy we developed GNU Emacs and the GNU system\n")
2070 (insert-button "Absence of Warranty"
2071 'action (lambda (_button) (describe-no-warranty))
2073 (insert "\tGNU Emacs comes with ABSOLUTELY NO WARRANTY\n")
2075 (insert-button "Copying Conditions"
2076 'action (lambda (_button) (describe-copying))
2078 (insert "\tConditions for redistributing and changing Emacs\n")
2080 (insert-button "Getting New Versions"
2081 'action (lambda (_button) (describe-distribution))
2083 (insert "\tHow to get the latest version of GNU Emacs\n")
2085 (insert-button "More Manuals / Ordering Manuals"
2086 'action (lambda (_button) (view-order-manuals))
2088 (insert "\tBuying printed manuals from the FSF\n"))
2090 (defun startup-echo-area-message ()
2092 "Starting Emacs daemon."
2093 (substitute-command-keys
2094 "For information about GNU Emacs and the GNU system, type \
2095 \\[about-emacs].")))
2097 (defun display-startup-echo-area-message ()
2098 (let ((resize-mini-windows t))
2099 (or noninteractive ;(input-pending-p) init-file-had-error
2100 ;; t if the init file says to inhibit the echo area startup message.
2101 (and inhibit-startup-echo-area-message
2103 (or (and (get 'inhibit-startup-echo-area-message 'saved-value)
2104 (equal inhibit-startup-echo-area-message
2105 (if (equal init-file-user "")
2108 ;; Wasn't set with custom; see if .emacs has a setq.
2111 (insert-file-contents user-init-file)
2114 "([ \t\n]*setq[ \t\n]+"
2115 "inhibit-startup-echo-area-message[ \t\n]+"
2118 (if (equal init-file-user "")
2124 (message "%s" (startup-echo-area-message)))))
2126 (defun display-startup-screen (&optional concise)
2127 "Display startup screen according to display.
2128 A fancy display is used on graphic displays, normal otherwise.
2130 If CONCISE is non-nil, display a concise version of the startup
2132 ;; Prevent recursive calls from server-process-filter.
2133 (if (not (get-buffer "*GNU Emacs*"))
2134 (if (use-fancy-splash-screens-p)
2135 (fancy-startup-screen concise)
2136 (normal-splash-screen t concise))))
2138 (defun display-about-screen ()
2139 "Display the *About GNU Emacs* buffer.
2140 A fancy display is used on graphic displays, normal otherwise."
2142 (if (use-fancy-splash-screens-p)
2143 (fancy-about-screen)
2144 (normal-splash-screen nil)))
2146 (defalias 'about-emacs 'display-about-screen)
2147 (defalias 'display-splash-screen 'display-startup-screen)
2149 (defun command-line-1 (args-left)
2150 "A subroutine of `command-line'."
2151 (display-startup-echo-area-message)
2152 (when (and pure-space-overflow
2153 (not noninteractive))
2156 "Building Emacs overflowed pure space.\
2157 (See the node Pure Storage in the Lisp manual for details.)"
2160 ;; `displayable-buffers' is a list of buffers that may be displayed,
2161 ;; which includes files parsed from the command line arguments and
2162 ;; `initial-buffer-choice'. All of the display logic happens at the
2163 ;; end of this `let'. As files as processed from the command line
2164 ;; arguments, their buffers are prepended to `displayable-buffers'.
2165 ;; In order for options like "--eval" to work with the "--file" arg,
2166 ;; the file buffers are set as the current buffer as they are seen
2167 ;; on the command line (so "emacs --batch --file a --file b
2168 ;; --eval='(message "%s" (buffer-name))'" will print "b"), but this
2169 ;; does not affect the final displayed state of the buffers.
2170 (let ((displayable-buffers nil))
2171 ;; This `let' processes the command line arguments.
2172 (let ((command-line-args-left args-left))
2173 (when command-line-args-left
2174 ;; We have command args; process them.
2175 (let* ((dir command-line-default-directory)
2177 ;; This approach loses for "-batch -L DIR --eval "(require foo)",
2178 ;; if foo is intended to be found in DIR.
2180 ;; The directories listed in --directory/-L options will *appear*
2181 ;; at the front of `load-path' in the order they appear on the
2182 ;; command-line. We cannot do this by *placing* them at the front
2183 ;; in the order they appear, so we need this variable to hold them,
2186 ;; To DTRT we keep track of the splice point and modify `load-path'
2187 ;; straight away upon any --directory/-L option.
2189 just-files ;; t if this follows the magic -- option.
2190 ;; This includes our standard options' long versions
2191 ;; and long versions of what's on command-switch-alist.
2193 (append '("--funcall" "--load" "--insert" "--kill"
2194 "--directory" "--eval" "--execute" "--no-splash"
2195 "--find-file" "--visit" "--file" "--no-desktop")
2196 (mapcar (lambda (elt) (concat "-" (car elt)))
2197 command-switch-alist)))
2200 ;; `process-file-arg' opens a file buffer for `name',
2201 ;; sets that buffer as the current buffer without
2202 ;; displaying it, adds the buffer to
2203 ;; `displayable-buffers', and puts the point at
2204 ;; `line':`column'. `line' and `column' are both reset
2205 ;; to zero when `process-file-arg' returns.
2208 ;; This can only happen if PWD is deleted.
2209 (if (not (or dir (file-name-absolute-p name)))
2210 (message "Ignoring relative file name (%s) due to \
2211 nil default-directory" name)
2212 (let* ((file (expand-file-name
2213 (command-line-normalize-file-name name)
2215 (buf (find-file-noselect file)))
2216 (setq displayable-buffers (cons buf displayable-buffers))
2217 ;; Set the file buffer to the current buffer so
2218 ;; that it will be used with "--eval" and
2221 ;; Put the point at `line':`column' in the file
2222 ;; buffer, and reset `line' and `column' to 0.
2223 (unless (zerop line)
2224 (goto-char (point-min))
2225 (forward-line (1- line)))
2227 (unless (< column 1)
2228 (move-to-column (1- column)))
2229 (setq column 0))))))
2231 ;; Add the long X options to longopts.
2232 (dolist (tem command-line-x-option-alist)
2233 (if (string-match "^--" (car tem))
2234 (push (car tem) longopts)))
2236 ;; Add the long NS options to longopts.
2237 (dolist (tem command-line-ns-option-alist)
2238 (if (string-match "^--" (car tem))
2239 (push (list (car tem)) longopts)))
2241 ;; Loop, processing options.
2242 (while command-line-args-left
2243 (let* ((argi (car command-line-args-left))
2246 (setq command-line-args-left (cdr command-line-args-left))
2248 ;; Do preliminary decoding of the option.
2250 ;; After --, don't look for options; treat all args as files.
2252 ;; Convert long options to ordinary options
2253 ;; and separate out an attached option argument into argval.
2254 (when (string-match "\\`\\(--[^=]*\\)=" argi)
2255 (setq argval (substring argi (match-end 0))
2256 argi (match-string 1 argi)))
2257 (when (string-match "\\`--?[^-]" orig-argi)
2258 (setq completion (try-completion argi longopts))
2259 (if (eq completion t)
2260 (setq argi (substring argi 1))
2261 (if (stringp completion)
2262 (let ((elt (member completion longopts)))
2264 (error "Option ‘%s’ is ambiguous" argi))
2265 (setq argi (substring (car elt) 1)))
2269 ;; Execute the option.
2270 (cond ((setq tem (assoc argi command-switch-alist))
2272 (let ((command-line-args-left
2273 (cons argval command-line-args-left)))
2274 (funcall (cdr tem) argi))
2275 (funcall (cdr tem) argi)))
2277 ((equal argi "-no-splash")
2278 (setq inhibit-startup-screen t))
2280 ((member argi '("-f" ; what the manual claims
2282 "-e")) ; what the source used to say
2283 (setq inhibit-startup-screen t)
2284 (setq tem (intern (or argval (pop command-line-args-left))))
2286 (command-execute tem)
2289 ((member argi '("-eval" "-execute"))
2290 (setq inhibit-startup-screen t)
2291 (eval (read (or argval (pop command-line-args-left)))))
2293 ((member argi '("-L" "-directory"))
2294 ;; -L :/foo adds /foo to the _end_ of load-path.
2297 (format "\\`%s" path-separator)
2298 (setq tem (or argval (pop command-line-args-left))))
2299 (setq tem (substring tem 1)
2301 (setq tem (expand-file-name
2302 (command-line-normalize-file-name tem)))
2303 (cond (append (setq load-path
2304 (append load-path (list tem)))
2305 (if splice (setq splice load-path)))
2306 (splice (setcdr splice (cons tem (cdr splice)))
2307 (setq splice (cdr splice)))
2308 (t (setq load-path (cons tem load-path)
2309 splice load-path)))))
2311 ((member argi '("-l" "-load"))
2312 (let* ((file (command-line-normalize-file-name
2313 (or argval (pop command-line-args-left))))
2314 ;; Take file from default dir if it exists there;
2315 ;; otherwise let `load' search for it.
2316 (file-ex (expand-file-name file)))
2317 (when (file-exists-p file-ex)
2318 (setq file file-ex))
2321 ;; This is used to handle -script. It's not clear
2322 ;; we need to document it (it is totally internal).
2323 ((member argi '("-scriptload"))
2324 (let* ((file (command-line-normalize-file-name
2325 (or argval (pop command-line-args-left))))
2326 ;; Take file from default dir.
2327 (file-ex (expand-file-name file)))
2328 (load file-ex nil t t)))
2330 ((equal argi "-insert")
2331 (setq inhibit-startup-screen t)
2332 (setq tem (or argval (pop command-line-args-left)))
2334 (error "File name omitted from ‘-insert’ option"))
2335 (insert-file-contents (command-line-normalize-file-name tem)))
2337 ((equal argi "-kill")
2340 ;; This is for when they use --no-desktop with -q, or
2341 ;; don't load Desktop in their .emacs. If desktop.el
2342 ;; _is_ loaded, it will handle this switch, and we
2343 ;; won't see it by the time we get here.
2344 ((equal argi "-no-desktop")
2345 (message "\"--no-desktop\" ignored because the Desktop package is not loaded"))
2347 ((string-match "^\\+[0-9]+\\'" argi)
2348 (setq line (string-to-number argi)))
2350 ((string-match "^\\+\\([0-9]+\\):\\([0-9]+\\)\\'" argi)
2351 (setq line (string-to-number (match-string 1 argi))
2352 column (string-to-number (match-string 2 argi))))
2354 ((setq tem (assoc orig-argi command-line-x-option-alist))
2355 ;; Ignore X-windows options and their args if not using X.
2356 (setq command-line-args-left
2357 (nthcdr (nth 1 tem) command-line-args-left)))
2359 ((setq tem (assoc orig-argi command-line-ns-option-alist))
2360 ;; Ignore NS-windows options and their args if not using NS.
2361 (setq command-line-args-left
2362 (nthcdr (nth 1 tem) command-line-args-left)))
2364 ((member argi '("-find-file" "-file" "-visit"))
2365 (setq inhibit-startup-screen t)
2366 ;; An explicit option to specify visiting a file.
2367 (setq tem (or argval (pop command-line-args-left)))
2368 (unless (stringp tem)
2369 (error "File name omitted from ‘%s’ option" argi))
2370 (funcall process-file-arg tem))
2372 ;; These command lines now have no effect.
2373 ((string-match "\\`--?\\(no-\\)?\\(uni\\|multi\\)byte$" argi)
2374 (display-warning 'initialization
2375 (format "Ignoring obsolete arg %s" argi)))
2378 (setq just-files t))
2380 ;; We have almost exhausted our options. See if the
2381 ;; user has made any other command-line options available
2382 (let ((hooks command-line-functions)
2385 (not (setq did-hook (funcall (car hooks)))))
2386 (setq hooks (cdr hooks)))
2388 ;; Presume that the argument is a file name.
2389 (if (string-match "\\`-" argi)
2390 (error "Unknown option ‘%s’" argi))
2391 ;; FIXME: Why do we only inhibit the startup
2393 (unless initial-window-system
2394 (setq inhibit-startup-screen t))
2395 (funcall process-file-arg orig-argi)))))
2397 ;; In unusual circumstances, the execution of Lisp code due
2398 ;; to command-line options can cause the last visible frame
2399 ;; to be deleted. In this case, kill emacs to avoid an
2401 (unless (frame-live-p (selected-frame)) (kill-emacs nil)))))))
2403 (when (eq initial-buffer-choice t)
2404 ;; When `initial-buffer-choice' equals t make sure that *scratch*
2406 (get-buffer-create "*scratch*"))
2408 ;; If *scratch* exists and is empty, insert initial-scratch-message.
2409 ;; Do this before switching to *scratch* below to handle bug#9605.
2410 (and initial-scratch-message
2411 (get-buffer "*scratch*")
2412 (with-current-buffer "*scratch*"
2413 (when (zerop (buffer-size))
2414 (insert initial-scratch-message)
2415 (set-buffer-modified-p nil))))
2417 ;; Prepend `initial-buffer-choice' to `displayable-buffers'.
2418 (when initial-buffer-choice
2420 (cond ((stringp initial-buffer-choice)
2421 (find-file-noselect initial-buffer-choice))
2422 ((functionp initial-buffer-choice)
2423 (funcall initial-buffer-choice))
2424 ((eq initial-buffer-choice t)
2425 (get-buffer-create "*scratch*"))
2427 (error "initial-buffer-choice must be a string, a function, or t.")))))
2428 (unless (buffer-live-p buf)
2429 (error "initial-buffer-choice is not a live buffer."))
2430 (setq displayable-buffers (cons buf displayable-buffers))))
2432 ;; Display the first two buffers in `displayable-buffers'. If
2433 ;; `initial-buffer-choice' is non-nil, its buffer will be the
2434 ;; first buffer in `displayable-buffers'. The first buffer will
2436 (let ((displayable-buffers-len (length displayable-buffers))
2437 ;; `nondisplayed-buffers-p' is true if there exist buffers
2438 ;; in `displayable-buffers' that were not displayed to the
2440 (nondisplayed-buffers-p nil))
2441 (when (> displayable-buffers-len 0)
2442 (switch-to-buffer (car displayable-buffers)))
2443 (when (> displayable-buffers-len 1)
2444 (switch-to-buffer-other-window (car (cdr displayable-buffers)))
2445 ;; Focus on the first buffer.
2447 (when (> displayable-buffers-len 2)
2448 (setq nondisplayed-buffers-p t))
2450 (if (or inhibit-startup-screen
2451 initial-buffer-choice
2454 inhibit-x-resources)
2456 ;; Not displaying a startup screen. Display *Buffer List* if
2457 ;; there exist buffers that were not displayed.
2458 (when (and nondisplayed-buffers-p
2459 (not noninteractive)
2460 (not inhibit-startup-buffer-menu))
2463 ;; Display a startup screen, after some preparations.
2465 ;; If there are no switches to process, we might as well
2466 ;; run this hook now, and there may be some need to do it
2467 ;; before doing any output.
2468 (run-hooks 'emacs-startup-hook 'term-setup-hook)
2470 ;; It's important to notice the user settings before we
2471 ;; display the startup message; otherwise, the settings
2472 ;; won't take effect until the user gives the first
2473 ;; keystroke, and that's distracting.
2474 (when (fboundp 'frame-notice-user-settings)
2475 (frame-notice-user-settings))
2477 ;; If there are no switches to process, we might as well
2478 ;; run this hook now, and there may be some need to do it
2479 ;; before doing any output.
2480 (run-hooks 'window-setup-hook)
2482 (setq inhibit-startup-hooks t)
2484 ;; ;; Do this now to avoid an annoying delay if the user
2485 ;; ;; clicks the menu bar during the sit-for.
2486 ;; (when (display-popup-menus-p)
2487 ;; (precompute-menubar-bindings))
2488 ;; (with-no-warnings
2489 ;; (setq menubar-bindings-done t))
2491 (display-startup-screen (> displayable-buffers-len 0))))))
2493 (defun command-line-normalize-file-name (file)
2494 "Collapse multiple slashes to one, to handle non-Emacs file names."
2496 ;; Use arg 1 so that we don't collapse // at the start of the file name.
2497 ;; That is significant on some systems.
2498 ;; However, /// at the beginning is supposed to mean just /, not //.
2500 (if (memq system-type '(ms-dos windows-nt))
2501 "^\\([\\/][\\/][\\/]\\)+"
2504 (setq file (replace-match "/" t t file)))
2505 (if (memq system-type '(ms-dos windows-nt))
2506 (while (string-match "\\([\\/][\\/]\\)+" file 1)
2507 (setq file (replace-match "/" t t file)))
2508 (while (string-match "//+" file 1)
2509 (setq file (replace-match "/" t t file))))
2512 ;;; startup.el ends here