1 ;;; startup.el --- process Emacs shell arguments -*- lexical-binding: t -*-
3 ;; Copyright (C) 1985-1986, 1992, 1994-2014 Free Software Foundation, Inc.
5 ;; Maintainer: emacs-devel@gnu.org
9 ;; This file is part of GNU Emacs.
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 of the License, or
14 ;; (at your option) any later version.
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.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
26 ;; This file parses the command line and gets Emacs running. Options
27 ;; on the command line are handled in precedence order. For priorities
28 ;; see the structure standard_args in the emacs.c file.
32 (setq top-level
'(normal-top-level))
34 (defvar command-line-processed nil
35 "Non-nil once command line has been processed.")
37 (defgroup initialization nil
38 "Emacs start-up procedure."
41 (defcustom initial-buffer-choice nil
42 "Buffer to show after starting Emacs.
43 If the value is nil and `inhibit-startup-screen' is nil, show the
44 startup screen. If the value is a string, switch to a buffer
45 visiting the file or directory specified by that string. If the
46 value is a function, switch to the buffer returned by that
47 function. If t, open the `*scratch*' buffer.
49 A string value also causes emacsclient to open the specified file
50 or directory when no target file is specified."
52 (const :tag
"Startup screen" nil
)
53 (directory :tag
"Directory" :value
"~/")
54 (file :tag
"File" :value
"~/.emacs")
55 (const :tag
"Notes buffer" remember-notes
)
56 (function :tag
"Function")
57 (const :tag
"Lisp scratch buffer" t
))
59 :group
'initialization
)
61 (defcustom inhibit-startup-screen nil
62 "Non-nil inhibits the startup screen.
64 This is for use in your personal init file (but NOT site-start.el),
65 once you are familiar with the contents of the startup screen."
67 :group
'initialization
)
69 (defvaralias 'inhibit-splash-screen
'inhibit-startup-screen
)
70 (defvaralias 'inhibit-startup-message
'inhibit-startup-screen
)
72 (defvar startup-screen-inhibit-startup-screen nil
)
74 ;; FIXME? Why does this get such weirdly extreme treatment, when the
75 ;; more important inhibit-startup-screen does not.
76 (defcustom inhibit-startup-echo-area-message nil
77 "Non-nil inhibits the initial startup echo area message.
78 Setting this variable takes effect
79 only if you do it with the customization buffer
80 or if your init file contains a line of this form:
81 (setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\")
82 If your init file is byte-compiled, use the following form
84 (eval '(setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\"))
85 Thus, someone else using a copy of your init file will see the
86 startup message unless he personally acts to inhibit it."
87 :type
'(choice (const :tag
"Don't inhibit")
88 (string :tag
"Enter your user name, to inhibit"))
89 :group
'initialization
)
91 (defcustom inhibit-default-init nil
92 "Non-nil inhibits loading the `default' library."
94 :group
'initialization
)
96 (defcustom inhibit-startup-buffer-menu nil
97 "Non-nil inhibits display of buffer list when more than 2 files are loaded."
99 :group
'initialization
)
101 (defvar command-switch-alist nil
102 "Alist of command-line switches.
103 Elements look like (SWITCH-STRING . HANDLER-FUNCTION).
104 HANDLER-FUNCTION receives the switch string as its sole argument;
105 the remaining command-line args are in the variable `command-line-args-left'.")
107 (defvar command-line-args-left nil
108 "List of command-line args not yet processed.")
110 (defvaralias 'argv
'command-line-args-left
111 "List of command-line args not yet processed.
112 This is a convenience alias, so that one can write \(pop argv\)
113 inside of --eval command line arguments in order to access
114 following arguments.")
115 (internal-make-var-non-special 'argv
)
118 "Current command-line argument.")
119 (internal-make-var-non-special 'argi
)
121 (defvar command-line-functions nil
;; lrs 7/31/89
122 "List of functions to process unrecognized command-line arguments.
123 Each function should access the dynamically bound variables
124 `argi' (the current argument) and `command-line-args-left' (the remaining
125 arguments). The function should return non-nil only if it recognizes and
126 processes `argi'. If it does so, it may consume successive arguments by
127 altering `command-line-args-left' to remove them.")
129 (defvar command-line-default-directory nil
130 "Default directory to use for command line arguments.
131 This is normally copied from `default-directory' when Emacs starts.")
133 ;; This is here, rather than in x-win.el, so that we can ignore these
134 ;; options when we are not using X.
135 (defconst command-line-x-option-alist
136 '(("-bw" 1 x-handle-numeric-switch border-width
)
137 ("-d" 1 x-handle-display
)
138 ("-display" 1 x-handle-display
)
139 ("-name" 1 x-handle-name-switch
)
140 ("-title" 1 x-handle-switch title
)
141 ("-T" 1 x-handle-switch title
)
142 ("-r" 0 x-handle-switch reverse t
)
143 ("-rv" 0 x-handle-switch reverse t
)
144 ("-reverse" 0 x-handle-switch reverse t
)
145 ("-reverse-video" 0 x-handle-switch reverse t
)
146 ("-fn" 1 x-handle-switch font
)
147 ("-font" 1 x-handle-switch font
)
148 ("-fs" 0 x-handle-initial-switch fullscreen fullboth
)
149 ("-fw" 0 x-handle-initial-switch fullscreen fullwidth
)
150 ("-fh" 0 x-handle-initial-switch fullscreen fullheight
)
151 ("-mm" 0 x-handle-initial-switch fullscreen maximized
)
152 ("-ib" 1 x-handle-numeric-switch internal-border-width
)
153 ("-g" 1 x-handle-geometry
)
154 ("-lsp" 1 x-handle-numeric-switch line-spacing
)
155 ("-geometry" 1 x-handle-geometry
)
156 ("-fg" 1 x-handle-switch foreground-color
)
157 ("-foreground" 1 x-handle-switch foreground-color
)
158 ("-bg" 1 x-handle-switch background-color
)
159 ("-background" 1 x-handle-switch background-color
)
160 ("-ms" 1 x-handle-switch mouse-color
)
161 ("-nbi" 0 x-handle-switch icon-type nil
)
162 ("-iconic" 0 x-handle-iconic
)
163 ("-xrm" 1 x-handle-xrm-switch
)
164 ("-cr" 1 x-handle-switch cursor-color
)
165 ("-vb" 0 x-handle-switch vertical-scroll-bars t
)
166 ("-hb" 0 x-handle-switch horizontal-scroll-bars t
)
167 ("-bd" 1 x-handle-switch
)
168 ("--border-width" 1 x-handle-numeric-switch border-width
)
169 ("--display" 1 x-handle-display
)
170 ("--name" 1 x-handle-name-switch
)
171 ("--title" 1 x-handle-switch title
)
172 ("--reverse-video" 0 x-handle-switch reverse t
)
173 ("--font" 1 x-handle-switch font
)
174 ("--fullscreen" 0 x-handle-initial-switch fullscreen fullboth
)
175 ("--fullwidth" 0 x-handle-initial-switch fullscreen fullwidth
)
176 ("--fullheight" 0 x-handle-initial-switch fullscreen fullheight
)
177 ("--maximized" 0 x-handle-initial-switch fullscreen maximized
)
178 ("--internal-border" 1 x-handle-numeric-switch internal-border-width
)
179 ("--geometry" 1 x-handle-geometry
)
180 ("--foreground-color" 1 x-handle-switch foreground-color
)
181 ("--background-color" 1 x-handle-switch background-color
)
182 ("--mouse-color" 1 x-handle-switch mouse-color
)
183 ("--no-bitmap-icon" 0 x-handle-no-bitmap-icon
)
184 ("--iconic" 0 x-handle-iconic
)
185 ("--xrm" 1 x-handle-xrm-switch
)
186 ("--cursor-color" 1 x-handle-switch cursor-color
)
187 ("--vertical-scroll-bars" 0 x-handle-switch vertical-scroll-bars t
)
188 ("--line-spacing" 1 x-handle-numeric-switch line-spacing
)
189 ("--border-color" 1 x-handle-switch border-color
)
190 ("--smid" 1 x-handle-smid
)
191 ("--parent-id" 1 x-handle-parent-id
))
192 "Alist of X Windows options.
193 Each element has the form
194 (NAME NUMARGS HANDLER FRAME-PARAM VALUE)
195 where NAME is the option name string, NUMARGS is the number of arguments
196 that the option accepts, HANDLER is a function to call to handle the option.
197 FRAME-PARAM (optional) is the frame parameter this option specifies,
198 and VALUE is the value which is given to that frame parameter
199 \(most options use the argument for this, so VALUE is not present).")
201 (defconst command-line-ns-option-alist
202 '(("-NSAutoLaunch" 1 ns-ignore-1-arg
)
203 ("-NXAutoLaunch" 1 ns-ignore-1-arg
)
205 ("-NSHost" 1 ns-ignore-1-arg
)
206 ("-_NSMachLaunch" 1 ns-ignore-1-arg
)
207 ("-MachLaunch" 1 ns-ignore-1-arg
)
208 ("-NXOpen" 1 ns-ignore-1-arg
)
209 ("-NSOpen" 1 ns-handle-nxopen
)
210 ("-NXOpenTemp" 1 ns-ignore-1-arg
)
211 ("-NSOpenTemp" 1 ns-handle-nxopentemp
)
212 ("-GSFilePath" 1 ns-handle-nxopen
)
213 ;;("-bw" . x-handle-numeric-switch)
214 ;;("-d" . x-handle-display)
215 ;;("-display" . x-handle-display)
216 ("-name" 1 x-handle-name-switch
)
217 ("-title" 1 x-handle-switch title
)
218 ("-T" 1 x-handle-switch title
)
219 ("-r" 0 x-handle-switch reverse t
)
220 ("-rv" 0 x-handle-switch reverse t
)
221 ("-reverse" 0 x-handle-switch reverse t
)
222 ("-fn" 1 x-handle-switch font
)
223 ("-font" 1 x-handle-switch font
)
224 ("-ib" 1 x-handle-numeric-switch internal-border-width
)
225 ("-g" 1 x-handle-geometry
)
226 ("-geometry" 1 x-handle-geometry
)
227 ("-fg" 1 x-handle-switch foreground-color
)
228 ("-foreground" 1 x-handle-switch foreground-color
)
229 ("-bg" 1 x-handle-switch background-color
)
230 ("-background" 1 x-handle-switch background-color
)
231 ; ("-ms" 1 x-handle-switch mouse-color)
232 ("-itype" 0 x-handle-switch icon-type t
)
233 ("-i" 0 x-handle-switch icon-type t
)
234 ("-iconic" 0 x-handle-iconic icon-type t
)
235 ;;("-xrm" . x-handle-xrm-switch)
236 ("-cr" 1 x-handle-switch cursor-color
)
237 ("-vb" 0 x-handle-switch vertical-scroll-bars t
)
238 ("-hb" 0 x-handle-switch horizontal-scroll-bars t
)
239 ("-bd" 1 x-handle-switch
)
240 ;; ("--border-width" 1 x-handle-numeric-switch border-width)
241 ;; ("--display" 1 ns-handle-display)
242 ("--name" 1 x-handle-name-switch
)
243 ("--title" 1 x-handle-switch title
)
244 ("--reverse-video" 0 x-handle-switch reverse t
)
245 ("--font" 1 x-handle-switch font
)
246 ("--internal-border" 1 x-handle-numeric-switch internal-border-width
)
247 ;; ("--geometry" 1 ns-handle-geometry)
248 ("--foreground-color" 1 x-handle-switch foreground-color
)
249 ("--background-color" 1 x-handle-switch background-color
)
250 ("--mouse-color" 1 x-handle-switch mouse-color
)
251 ("--icon-type" 0 x-handle-switch icon-type t
)
252 ("--iconic" 0 x-handle-iconic
)
253 ;; ("--xrm" 1 ns-handle-xrm-switch)
254 ("--cursor-color" 1 x-handle-switch cursor-color
)
255 ("--vertical-scroll-bars" 0 x-handle-switch vertical-scroll-bars t
)
256 ("--border-color" 1 x-handle-switch border-width
))
257 "Alist of NS options.
258 Each element has the form
259 (NAME NUMARGS HANDLER FRAME-PARAM VALUE)
260 where NAME is the option name string, NUMARGS is the number of arguments
261 that the option accepts, HANDLER is a function to call to handle the option.
262 FRAME-PARAM (optional) is the frame parameter this option specifies,
263 and VALUE is the value which is given to that frame parameter
264 \(most options use the argument for this, so VALUE is not present).")
267 (defvar before-init-hook nil
268 "Normal hook run after handling urgent options but before loading init files.")
270 (defvar after-init-hook nil
271 "Normal hook run after initializing the Emacs session.
272 It is run after Emacs loads the init file, `default' library, the
273 abbrevs file, and additional Lisp packages (if any), and setting
274 the value of `after-init-time'.
276 There is no `condition-case' around the running of this hook;
277 therefore, if `debug-on-error' is non-nil, an error in one of
278 these functions will invoke the debugger.")
280 (defvar emacs-startup-hook nil
281 "Normal hook run after loading init files and handling the command line.")
283 (defvar term-setup-hook nil
284 "Normal hook run immediately after `emacs-startup-hook'.
285 In new code, there is no reason to use this instead of `emacs-startup-hook'.
286 If you want to execute terminal-specific Lisp code, for example
287 to override the definitions made by the terminal-specific file,
288 see `tty-setup-hook'.")
290 (make-obsolete-variable 'term-setup-hook
291 "use either `emacs-startup-hook' or \
292 `tty-setup-hook' instead." "24.4")
294 (defvar inhibit-startup-hooks nil
295 "Non-nil means don't run `term-setup-hook' and `emacs-startup-hook'.
296 This is because we already did so.")
298 (defvar keyboard-type nil
299 "The brand of keyboard you are using.
300 This variable is used to define the proper function and keypad
301 keys for use under X. It is used in a fashion analogous to the
302 environment variable TERM.")
304 (defvar window-setup-hook nil
305 "Normal hook run to initialize window system display.
306 Emacs runs this hook after processing the command line arguments and loading
307 the user's init file.")
309 (defcustom initial-major-mode
'lisp-interaction-mode
310 "Major mode command symbol to use for the initial `*scratch*' buffer."
312 :group
'initialization
)
314 (defvar init-file-user nil
315 "Identity of user whose init file is or was read.
316 The value is nil if `-q' or `--no-init-file' was specified,
317 meaning do not load any init file.
319 Otherwise, the value may be an empty string, meaning
320 use the init file for the user who originally logged in,
321 or it may be a string containing a user's name meaning
322 use that person's init file.
324 In either of the latter cases, `(concat \"~\" init-file-user \"/\")'
325 evaluates to the name of the directory where the init file was
328 Setting `init-file-user' does not prevent Emacs from loading
329 `site-start.el'. The only way to do that is to use `--no-site-file'.")
331 (defcustom site-run-file
(purecopy "site-start")
332 "File containing site-wide run-time initializations.
333 This file is loaded at run-time before `~/.emacs'. It contains inits
334 that need to be in place for the entire site, but which, due to their
335 higher incidence of change, don't make sense to load into Emacs's
336 dumped image. Thus, the run-time load order is: 1. file described in
337 this variable, if non-nil; 2. `~/.emacs'; 3. `default.el'.
339 Don't use the `site-start.el' file for things some users may not like.
340 Put them in `default.el' instead, so that users can more easily
341 override them. Users can prevent loading `default.el' with the `-q'
342 option or by setting `inhibit-default-init' in their own init files,
343 but inhibiting `site-start.el' requires `--no-site-file', which
346 This variable is defined for customization so as to make
347 it visible in the relevant context. However, actually customizing it
348 is not allowed, since it would not work anyway. The only way to set
349 this variable usefully is to set it while building and dumping Emacs."
350 :type
'(choice (const :tag
"none" nil
) string
)
351 :group
'initialization
352 :initialize
'custom-initialize-default
353 :set
(lambda (_variable _value
)
354 (error "Customizing `site-run-file' does not work")))
356 (defcustom mail-host-address nil
357 "Name of this machine, for purposes of naming users.
358 If non-nil, Emacs uses this instead of `system-name' when constructing
360 :type
'(choice (const nil
) string
)
363 (defcustom user-mail-address
(if command-line-processed
365 (concat (user-login-name) "@"
366 (or mail-host-address
368 ;; Empty string means "not set yet".
370 "Full mailing address of this user.
371 This is initialized with environment variable `EMAIL' or, as a
372 fallback, using `mail-host-address'. This is done after your
373 init file is read, in case it sets `mail-host-address'."
377 (defcustom auto-save-list-file-prefix
378 (cond ((eq system-type
'ms-dos
)
379 ;; MS-DOS cannot have initial dot, and allows only 8.3 names
380 (concat user-emacs-directory
"auto-save.list/_s"))
382 (concat user-emacs-directory
"auto-save-list/.saves-")))
383 "Prefix for generating `auto-save-list-file-name'.
384 This is used after reading your init file to initialize
385 `auto-save-list-file-name', by appending Emacs's pid and the system name,
386 if you have not already set `auto-save-list-file-name' yourself.
387 Directories in the prefix will be created if necessary.
388 Set this to nil if you want to prevent `auto-save-list-file-name'
389 from being initialized."
390 :type
'(choice (const :tag
"Don't record a session's auto save list" nil
)
394 (defvar emacs-basic-display nil
)
396 (defvar init-file-debug nil
)
398 (defvar init-file-had-error nil
399 "Non-nil if there was an error loading the user's init file.")
401 (defvar normal-top-level-add-subdirs-inode-list nil
)
403 (defvar no-blinking-cursor nil
)
405 (defvar pure-space-overflow nil
406 "Non-nil if building Emacs overflowed pure space.")
408 (defvar pure-space-overflow-message
(purecopy "\
409 Warning Warning!!! Pure space overflow !!!Warning Warning
410 \(See the node Pure Storage in the Lisp manual for details.)\n"))
412 (defcustom tutorial-directory
413 (file-name-as-directory (expand-file-name "tutorials" data-directory
))
414 "Directory containing the Emacs TUTORIAL files."
417 :initialize
'custom-initialize-delay
)
419 (defvar package--builtin-versions
420 ;; Mostly populated by loaddefs.el via autoload-builtin-package-versions.
421 (purecopy `((emacs .
,(version-to-list emacs-version
))))
422 "Alist giving the version of each versioned builtin package.
423 I.e. each element of the list is of the form (NAME . VERSION) where
424 NAME is the package name as a symbol, and VERSION is its version
427 (defun package--description-file (dir)
428 (concat (let ((subdir (file-name-nondirectory
429 (directory-file-name dir
))))
430 (if (string-match "\\([^.].*?\\)-\\([0-9]+\\(?:[.][0-9]+\\|\\(?:pre\\|beta\\|alpha\\)[0-9]+\\)*\\)" subdir
)
431 (match-string 1 subdir
) subdir
))
434 (defun normal-top-level-add-subdirs-to-load-path ()
435 "Add all subdirectories of `default-directory' to `load-path'.
436 More precisely, this uses only the subdirectories whose names
437 start with letters or digits; it excludes any subdirectory named `RCS'
438 or `CVS', and any subdirectory that contains a file named `.nosearch'."
441 (pending (list default-directory
)))
442 ;; This loop does a breadth-first tree walk on DIR's subtree,
443 ;; putting each subdir into DIRS as its contents are examined.
445 (push (pop pending
) dirs
)
446 (let* ((this-dir (car dirs
))
447 (contents (directory-files this-dir
))
448 (default-directory this-dir
)
449 (canonicalized (if (fboundp 'w32-untranslated-canonical-name
)
450 (w32-untranslated-canonical-name this-dir
))))
451 ;; The Windows version doesn't report meaningful inode numbers, so
452 ;; use the canonicalized absolute file name of the directory instead.
453 (setq attrs
(or canonicalized
454 (nthcdr 10 (file-attributes this-dir
))))
455 (unless (member attrs normal-top-level-add-subdirs-inode-list
)
456 (push attrs normal-top-level-add-subdirs-inode-list
)
457 (dolist (file contents
)
458 (and (string-match "\\`[[:alnum:]]" file
)
459 ;; The lower-case variants of RCS and CVS are for DOS/Windows.
460 (not (member file
'("RCS" "CVS" "rcs" "cvs")))
461 ;; Avoid doing a `stat' when it isn't necessary because
462 ;; that can cause trouble when an NFS server is down.
463 (not (string-match "\\.elc?\\'" file
))
464 (file-directory-p file
)
465 (let ((expanded (expand-file-name file
)))
466 (or (file-exists-p (expand-file-name ".nosearch" expanded
))
467 (setq pending
(nconc pending
(list expanded
))))))))))
468 (normal-top-level-add-to-load-path (cdr (nreverse dirs
)))))
470 (defun normal-top-level-add-to-load-path (dirs)
471 "This function is called from a subdirs.el file.
472 It assumes that `default-directory' is the directory in which the
473 subdirs.el file exists, and it adds to `load-path' the subdirs of
474 that directory as specified in DIRS. Normally the elements of
476 (let ((tail load-path
)
477 (thisdir (directory-file-name default-directory
)))
479 ;;Don't go all the way to the nil terminator.
481 (not (equal thisdir
(car tail
)))
482 (not (and (memq system-type
'(ms-dos windows-nt
))
483 (equal (downcase thisdir
) (downcase (car tail
))))))
484 (setq tail
(cdr tail
)))
485 ;;Splice the new section in.
487 (setcdr tail
(append (mapcar 'expand-file-name dirs
) (cdr tail
))))))
489 (defun normal-top-level ()
490 "Emacs calls this function when it first starts up.
491 It sets `command-line-processed', processes the command-line,
492 reads the initialization files, etc.
493 It is the default value of the variable `top-level'."
494 (if command-line-processed
495 (message "Back to top level.")
496 (setq command-line-processed t
)
498 ;; Look in each dir in load-path for a subdirs.el file. If we
499 ;; find one, load it, which will add the appropriate subdirs of
500 ;; that dir into load-path. This needs to be done before setting
501 ;; the locale environment, because the latter might need to load
502 ;; some support files.
503 ;; Look for a leim-list.el file too. Loading it will register
504 ;; available input methods.
505 (let ((tail load-path
)
506 (lispdir (expand-file-name "../lisp" data-directory
))
509 (setq dir
(car tail
))
510 (let ((default-directory dir
))
511 (load (expand-file-name "subdirs.el") t t t
))
512 ;; Do not scan standard directories that won't contain a leim-list.el.
513 ;; http://lists.gnu.org/archive/html/emacs-devel/2009-10/msg00502.html
514 ;; (Except the preloaded one in lisp/leim.)
515 (or (string-prefix-p lispdir dir
)
516 (let ((default-directory dir
))
517 (load (expand-file-name "leim-list.el") t t t
)))
518 ;; We don't use a dolist loop and we put this "setq-cdr" command at
519 ;; the end, because the subdirs.el files may add elements to the end
520 ;; of load-path and we want to take it into account.
521 (setq tail
(cdr tail
))))
523 ;; Set the default strings to display in mode line for end-of-line
524 ;; formats that aren't native to this platform. This should be
525 ;; done before calling set-locale-environment, as the latter might
526 ;; use these mnemonics.
528 ((memq system-type
'(ms-dos windows-nt
))
529 (setq eol-mnemonic-unix
"(Unix)"
530 eol-mnemonic-mac
"(Mac)"))
531 (t ; this is for Unix/GNU/Linux systems
532 (setq eol-mnemonic-dos
"(DOS)"
533 eol-mnemonic-mac
"(Mac)")))
535 (set-locale-environment nil
)
536 ;; Decode all default-directory's (probably, only *scratch* exists
537 ;; at this point). default-directory of *scratch* is the basis
538 ;; for many other file-name variables and directory lists, so it
539 ;; is important to decode it ASAP.
540 (when locale-coding-system
541 (let ((coding (if (eq system-type
'windows-nt
)
542 ;; MS-Windows build converts all file names to
543 ;; UTF-8 during startup.
545 locale-coding-system
)))
547 (dolist (elt (buffer-list))
549 (if default-directory
550 (setq default-directory
551 (decode-coding-string default-directory coding t
)))))
553 ;; Decode all the important variables and directory lists, now
554 ;; that we know the locale's encoding. This is because the
555 ;; values of these variables are until here unibyte undecoded
556 ;; strings created by build_unibyte_string. data-directory in
557 ;; particular is used to construct many other standard
558 ;; directory names, so it must be decoded ASAP. Note that
559 ;; charset-map-path cannot be decoded here, since we could
560 ;; then be trapped in infinite recursion below, when we load
561 ;; subdirs.el, because encoding a directory name might need to
562 ;; load a charset map, which will want to encode
563 ;; charset-map-path, which will want to load the same charset
564 ;; map... So decoding of charset-map-path is delayed until
565 ;; further down below.
566 (dolist (pathsym '(load-path exec-path
))
567 (let ((path (symbol-value pathsym
)))
569 (set pathsym
(mapcar (lambda (dir)
570 (decode-coding-string dir coding t
))
572 (dolist (filesym '(data-directory doc-directory exec-directory
573 installation-directory
574 invocation-directory invocation-name
576 shared-game-score-directory
))
577 (let ((file (symbol-value filesym
)))
579 (set filesym
(decode-coding-string file coding t
)))))))
581 (let ((dir default-directory
))
582 (with-current-buffer "*Messages*"
583 (messages-buffer-mode)
584 ;; Make it easy to do like "tail -f".
585 (set (make-local-variable 'window-point-insertion-type
) t
)
586 ;; Give *Messages* the same default-directory as *scratch*,
587 ;; just to keep things predictable.
588 (setq default-directory dir
)))
589 ;; `user-full-name' is now known; reset its standard-value here.
590 (put 'user-full-name
'standard-value
591 (list (default-value 'user-full-name
)))
592 ;; If the PWD environment variable isn't accurate, delete it.
593 (let ((pwd (getenv "PWD")))
595 ;; Use FOO/., so that if FOO is a symlink, file-attributes
596 ;; describes the directory linked to, not FOO itself.
597 (or (equal (file-attributes
598 (concat (file-name-as-directory pwd
) "."))
600 (concat (file-name-as-directory default-directory
)
602 (setq process-environment
603 (delete (concat "PWD=" pwd
)
604 process-environment
)))))
605 ;; Now, that other directories were searched, and any charsets we
606 ;; need for encoding them are already loaded, we are ready to
607 ;; decode charset-map-path.
608 (if (listp charset-map-path
)
609 (let ((coding (if (eq system-type
'windows-nt
)
611 locale-coding-system
)))
612 (setq charset-map-path
613 (mapcar (lambda (dir)
614 (decode-coding-string dir coding t
))
616 (setq default-directory
(abbreviate-file-name default-directory
))
617 (let ((old-face-font-rescale-alist face-font-rescale-alist
))
620 ;; Do this again, in case .emacs defined more abbreviations.
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
)
649 (run-hooks 'term-setup-hook
)))
651 ;; Don't do this if we failed to create the initial frame,
652 ;; for instance due to a dense colormap.
653 (when (or frame-initial-frame
654 ;; If frame-initial-frame has no meaning, do this anyway.
655 (not (and initial-window-system
657 (not (eq initial-window-system
'pc
)))))
659 ;; FIXME: The user's init file may change
660 ;; face-font-rescale-alist. However, the default face
661 ;; already has an assigned font object, which does not take
662 ;; face-font-rescale-alist into account. For such
663 ;; situations, we ought to have a way to find all font
664 ;; objects and regenerate them; currently we do not. As a
665 ;; workaround, we specifically reset te default face's :font
666 ;; attribute here. See bug#1785.
667 (unless (eq face-font-rescale-alist
668 old-face-font-rescale-alist
)
669 (set-face-attribute 'default nil
:font
(font-spec)))
671 ;; Modify the initial frame based on what .emacs puts into
673 (if (fboundp 'frame-notice-user-settings
)
674 (frame-notice-user-settings))
675 ;; Set the faces for the initial background mode even if
676 ;; frame-notice-user-settings didn't (such as on a tty).
677 ;; frame-set-background-mode is idempotent, so it won't
678 ;; cause any harm if it's already been done.
679 (if (fboundp 'frame-set-background-mode
)
680 (frame-set-background-mode (selected-frame))))
682 ;; Now we know the user's default font, so add it to the menu.
683 (if (fboundp 'font-menu-add-default
)
684 (font-menu-add-default))
685 (and window-setup-hook
686 (run-hooks 'window-setup-hook
))))
687 ;; Subprocesses of Emacs do not have direct access to the terminal, so
688 ;; unless told otherwise they should only assume a dumb terminal.
689 ;; We are careful to do it late (after term-setup-hook), although the
690 ;; new multi-tty code does not use $TERM any more there anyway.
691 (setenv "TERM" "dumb")
692 ;; Remove DISPLAY from the process-environment as well. This allows
693 ;; `callproc.c' to give it a useful adaptive default which is either
694 ;; the value of the `display' frame-parameter or the DISPLAY value
695 ;; from initial-environment.
696 (let ((display (frame-parameter nil
'display
)))
697 ;; Be careful which DISPLAY to remove from process-environment: follow
698 ;; the logic of `callproc.c'.
699 (if (stringp display
) (setq display
(concat "DISPLAY=" display
))
700 (dolist (varval initial-environment
)
701 (if (string-match "\\`DISPLAY=" varval
)
702 (setq display varval
))))
704 (delete display process-environment
)))))
706 ;; Precompute the keyboard equivalents in the menu bar items.
707 ;; Command-line options supported by tty's:
708 (defconst tty-long-option-alist
709 '(("--name" .
"-name")
711 ("--reverse-video" .
"-reverse")
712 ("--foreground-color" .
"-fg")
713 ("--background-color" .
"-bg")
714 ("--color" .
"-color")))
716 (defconst tool-bar-images-pixel-height
24
717 "Height in pixels of images in the tool-bar.")
719 (defvar tool-bar-originally-present nil
720 "Non-nil if tool-bars are present before user and site init files are read.")
722 (defvar handle-args-function-alist
'((nil . tty-handle-args
))
723 "Functions for processing window-system dependent command-line arguments.
724 Window system startup files should add their own function to this
725 alist, which should parse the command line arguments. Those
726 pertaining to the window system should be processed and removed
727 from the returned command line.")
729 (defvar window-system-initialization-alist
'((nil . ignore
))
730 "Alist of window-system initialization functions.
731 Window-system startup files should add their own initialization
732 function to this list. The function should take no arguments,
733 and initialize the window system environment to prepare for
734 opening the first frame (e.g. open a connection to an X server).")
736 (defun tty-handle-args (args)
737 "Handle the X-like command-line arguments \"-fg\", \"-bg\", \"-name\", etc."
740 (not (equal (car args
) "--")))
741 (let* ((argi (pop args
))
744 ;; Check for long options with attached arguments
745 ;; and separate out the attached option argument into argval.
746 (when (string-match "^\\(--[^=]*\\)=" argi
)
747 (setq argval
(substring argi
(match-end 0))
748 argi
(match-string 1 argi
)))
749 (when (string-match "^--" argi
)
750 (setq completion
(try-completion argi tty-long-option-alist
))
751 (if (eq completion t
)
752 ;; Exact match for long option.
753 (setq argi
(cdr (assoc argi tty-long-option-alist
)))
754 (if (stringp completion
)
755 (let ((elt (assoc completion tty-long-option-alist
)))
756 ;; Check for abbreviated long option.
758 (error "Option `%s' is ambiguous" argi
))
759 (setq argi
(cdr elt
)))
760 ;; Check for a short option.
763 (cond ((member argi
'("-fg" "-foreground"))
764 (push (cons 'foreground-color
(or argval
(pop args
)))
765 default-frame-alist
))
766 ((member argi
'("-bg" "-background"))
767 (push (cons 'background-color
(or argval
(pop args
)))
768 default-frame-alist
))
769 ((member argi
'("-T" "-name"))
770 (unless argval
(setq argval
(pop args
)))
774 (let ((case-fold-search t
)
776 (setq argval
(invocation-name))
778 ;; Change any . or * characters in name to
779 ;; hyphens, so as to emulate behavior on X.
781 (setq i
(string-match "[.*]" argval
))
784 default-frame-alist
))
785 ((member argi
'("-r" "-rv" "-reverse"))
787 default-frame-alist
))
788 ((equal argi
"-color")
789 (unless argval
(setq argval
8)) ; default --color means 8 ANSI colors
790 (push (cons 'tty-color-mode
792 ((numberp argval
) argval
)
793 ((string-match "-?[0-9]+" argval
)
794 (string-to-number argval
))
795 (t (intern argval
))))
796 default-frame-alist
))
799 (nconc (nreverse rest
) args
)))
801 (declare-function x-get-resource
"frame.c"
802 (attribute class
&optional component subclass
))
803 (declare-function tool-bar-mode
"tool-bar" (&optional arg
))
804 (declare-function tool-bar-setup
"tool-bar")
807 (defvar server-process
)
809 (defun command-line ()
810 "A subroutine of `normal-top-level'.
811 Amongst another things, it parses the command-line arguments."
812 (setq before-init-time
(current-time)
814 command-line-default-directory default-directory
)
816 ;; Force recomputation, in case it was computed during the dump.
817 (setq abbreviated-home-dir nil
)
819 ;; See if we should import version-control from the environment variable.
820 (let ((vc (getenv "VERSION_CONTROL")))
821 (cond ((eq vc nil
)) ;don't do anything if not set
822 ((member vc
'("t" "numbered"))
823 (setq version-control t
))
824 ((member vc
'("nil" "existing"))
825 (setq version-control nil
))
826 ((member vc
'("never" "simple"))
827 (setq version-control
'never
))))
829 ;;! This has been commented out; I currently find the behavior when
830 ;;! split-window-keep-point is nil disturbing, but if I can get used
831 ;;! to it, then it would be better to eliminate the option.
832 ;;! ;; Choose a good default value for split-window-keep-point.
833 ;;! (setq split-window-keep-point (> baud-rate 2400))
835 ;; Convert preloaded file names in load-history to absolute.
836 (let ((simple-file-name
837 ;; Look for simple.el or simple.elc and use their directory
838 ;; as the place where all Lisp files live.
839 (locate-file "simple" load-path
(get-load-suffixes)))
841 ;; Don't abort if simple.el cannot be found, but print a warning.
842 ;; Although in most usage we are going to cryptically abort a moment
843 ;; later anyway, due to missing required bidi data files (eg bug#13430).
844 (if (null simple-file-name
)
845 (let ((standard-output 'external-debugging-output
)
846 (lispdir (expand-file-name "../lisp" data-directory
)))
847 (princ "Warning: Could not find simple.el or simple.elc")
849 (when (getenv "EMACSLOADPATH")
850 (princ "The EMACSLOADPATH environment variable is set, \
851 please check its value")
853 (unless (file-readable-p lispdir
)
854 (princ (format "Lisp directory %s not readable?" lispdir
))
856 (setq lisp-dir
(file-truename (file-name-directory simple-file-name
)))
858 (mapcar (lambda (elt)
859 (if (and (stringp (car elt
))
860 (not (file-name-absolute-p (car elt
))))
861 (cons (concat lisp-dir
867 ;; Convert the arguments to Emacs internal representation.
868 (let ((args command-line-args
))
871 (decode-coding-string (car args
) locale-coding-system t
))
875 (args (cdr command-line-args
))
878 ;; Figure out which user's init file to load,
879 ;; either from the environment or from the options.
880 (setq init-file-user
(if noninteractive nil
(user-login-name)))
881 ;; If user has not done su, use current $HOME to find .emacs.
883 (equal init-file-user
(user-real-login-name))
884 (setq init-file-user
""))
886 ;; Process the command-line args, and delete the arguments
887 ;; processed. This is consistent with the way main in emacs.c
889 (while (and (not done
) args
)
890 (let* ((longopts '(("--no-init-file") ("--no-site-file") ("--debug-init")
891 ("--user") ("--iconic") ("--icon-type") ("--quick")
892 ("--no-blinking-cursor") ("--basic-display")))
896 ;; Handle --OPTION=VALUE format.
897 (when (string-match "\\`\\(--[^=]*\\)=" argi
)
898 (setq argval
(substring argi
(match-end 0))
899 argi
(match-string 1 argi
)))
900 (when (string-match "\\`--." orig-argi
)
901 (let ((completion (try-completion argi longopts
)))
902 (cond ((eq completion t
)
903 (setq argi
(substring argi
1)))
904 ((stringp completion
)
905 (let ((elt (assoc completion longopts
)))
907 (error "Option `%s' is ambiguous" argi
))
908 (setq argi
(substring (car elt
) 1))))
913 ;; The --display arg is handled partly in C, partly in Lisp.
914 ;; When it shows up here, we just put it back to be handled
915 ;; by `command-line-1'.
916 ((member argi
'("-d" "-display"))
917 (setq display-arg
(list argi
(pop args
))))
918 ((member argi
'("-Q" "-quick"))
919 (setq init-file-user nil
921 inhibit-x-resources t
))
922 ((member argi
'("-D" "-basic-display"))
923 (setq no-blinking-cursor t
924 emacs-basic-display t
)
925 (push '(vertical-scroll-bars . nil
) initial-frame-alist
))
926 ((member argi
'("-q" "-no-init-file"))
927 (setq init-file-user nil
))
928 ((member argi
'("-u" "-user"))
929 (setq init-file-user
(or argval
(pop args
))
931 ((equal argi
"-no-site-file")
932 (setq site-run-file nil
))
933 ((equal argi
"-debug-init")
934 (setq init-file-debug t
))
935 ((equal argi
"-iconic")
936 (push '(visibility . icon
) initial-frame-alist
))
937 ((member argi
'("-nbc" "-no-blinking-cursor"))
938 (setq no-blinking-cursor t
))
939 ;; Push the popped arg back on the list of arguments.
943 ;; Was argval set but not used?
945 (error "Option `%s' doesn't allow an argument" argi
))))
947 ;; Re-attach the --display arg.
948 (and display-arg
(setq args
(append display-arg args
)))
950 ;; Re-attach the program name to the front of the arg list.
951 (and command-line-args
952 (setcdr command-line-args args
)))
954 ;; Make sure window system's init file was loaded in loadup.el if
955 ;; using a window system.
956 ;; Initialize the window-system only after processing the command-line
957 ;; args so that -Q can influence this initialization.
958 (condition-case error
959 (unless noninteractive
960 (if (and initial-window-system
963 (concat (symbol-name initial-window-system
) "-win")))))
964 (error "Unsupported window system `%s'" initial-window-system
))
965 ;; Process window-system specific command line parameters.
966 (setq command-line-args
968 (or (cdr (assq initial-window-system handle-args-function-alist
))
969 (error "Unsupported window system `%s'" initial-window-system
))
971 ;; Initialize the window system. (Open connection, etc.)
973 (or (cdr (assq initial-window-system window-system-initialization-alist
))
974 (error "Unsupported window system `%s'" initial-window-system
)))
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 ;; Re-evaluate predefined variables whose initial value depends on
1021 ;; the runtime context.
1022 (mapc 'custom-reevaluate-setting
1023 ;; Initialize them in the same order they were loaded, in case there
1024 ;; are dependencies between them.
1025 (prog1 (nreverse custom-delayed-init-variables
)
1026 (setq custom-delayed-init-variables nil
)))
1028 (normal-erase-is-backspace-setup-frame)
1030 ;; Register default TTY colors for the case the terminal hasn't a
1031 ;; terminal init file. We do this regardless of whether the terminal
1032 ;; supports colors or not and regardless the current display type,
1033 ;; since users can connect to color-capable terminals and also
1034 ;; switch color support on or off in mid-session by setting the
1035 ;; tty-color-mode frame parameter.
1036 ;; Exception: the `pc' ``window system'' has only 16 fixed colors,
1037 ;; and they are already set at this point by a suitable function in
1038 ;; window-system-initialization-alist.
1039 (or (eq initial-window-system
'pc
)
1040 (tty-register-default-colors))
1042 ;; Record whether the tool-bar is present before the user and site
1043 ;; init files are processed. frame-notice-user-settings uses this
1044 ;; to determine if the tool-bar has been disabled by the init files,
1045 ;; and the frame needs to be resized.
1046 (when (fboundp 'frame-notice-user-settings
)
1047 (let ((tool-bar-lines (or (assq 'tool-bar-lines initial-frame-alist
)
1048 (assq 'tool-bar-lines default-frame-alist
))))
1049 (setq tool-bar-originally-present
1051 (cdr tool-bar-lines
)
1052 (not (eq 0 (cdr tool-bar-lines
)))))))
1054 (let ((old-scalable-fonts-allowed scalable-fonts-allowed
)
1055 (old-face-ignored-fonts face-ignored-fonts
))
1057 ;; Run the site-start library if it exists. The point of this file is
1058 ;; that it is run before .emacs. There is no point in doing this after
1059 ;; .emacs; that is useless.
1060 ;; Note that user-init-file is nil at this point. Code that might
1061 ;; be loaded from site-run-file and wants to test if -q was given
1062 ;; should check init-file-user instead, since that is already set.
1063 ;; See cus-edit.el for an example.
1065 (load site-run-file t t
))
1067 ;; Sites should not disable this. Only individuals should disable
1068 ;; the startup screen.
1069 (setq inhibit-startup-screen nil
)
1071 ;; Warn for invalid user name.
1072 (when init-file-user
1073 (if (string-match "[~/:\n]" init-file-user
)
1074 (display-warning 'initialization
1075 (format "Invalid user name %s"
1078 (if (file-directory-p (expand-file-name
1079 ;; We don't support ~USER on MS-Windows
1080 ;; and MS-DOS except for the current
1081 ;; user, and always load .emacs from
1082 ;; the current user's home directory
1083 ;; (see below). So always check "~",
1084 ;; even if invoked with "-u USER", or
1085 ;; if $USER or $LOGNAME are set to
1086 ;; something different.
1087 (if (memq system-type
'(windows-nt ms-dos
))
1089 (concat "~" init-file-user
))))
1091 (display-warning 'initialization
1092 (format "User %s has no home directory"
1093 (if (equal init-file-user
"")
1094 (user-real-login-name)
1098 ;; Load that user's init file, or the default one, or none.
1099 (let (debug-on-error-from-init-file
1100 debug-on-error-should-be-set
1101 (debug-on-error-initial
1102 (if (eq init-file-debug t
) 'startup init-file-debug
))
1103 (orig-enable-multibyte (default-value 'enable-multibyte-characters
)))
1104 (let ((debug-on-error debug-on-error-initial
)
1105 ;; This function actually reads the init files.
1110 (let ((user-init-file-1
1112 ((eq system-type
'ms-dos
)
1113 (concat "~" init-file-user
"/_emacs"))
1114 ((not (eq system-type
'windows-nt
))
1115 (concat "~" init-file-user
"/.emacs"))
1116 ;; Else deal with the Windows situation
1117 ((directory-files "~" nil
"^\\.emacs\\(\\.elc?\\)?$")
1118 ;; Prefer .emacs on Windows.
1120 ((directory-files "~" nil
"^_emacs\\(\\.elc?\\)?$")
1121 ;; Also support _emacs for compatibility, but warn about it.
1122 (push '(initialization
1123 "`_emacs' init file is deprecated, please use `.emacs'")
1124 delayed-warnings-list
)
1126 (t ;; But default to .emacs if _emacs does not exist.
1128 ;; This tells `load' to store the file name found
1129 ;; into user-init-file.
1130 (setq user-init-file t
)
1131 (load user-init-file-1 t t
)
1133 (when (eq user-init-file t
)
1134 ;; If we did not find ~/.emacs, try
1135 ;; ~/.emacs.d/init.el.
1139 (file-name-as-directory
1140 (concat "~" init-file-user
"/.emacs.d")))))
1141 (load otherfile t t
)
1143 ;; If we did not find the user's init file,
1144 ;; set user-init-file conclusively.
1145 ;; Don't let it be set from default.el.
1146 (when (eq user-init-file t
)
1147 (setq user-init-file user-init-file-1
))))
1149 ;; If we loaded a compiled file, set
1150 ;; `user-init-file' to the source version if that
1152 (when (and user-init-file
1153 (equal (file-name-extension user-init-file
)
1155 (let* ((source (file-name-sans-extension user-init-file
))
1156 (alt (concat source
".el")))
1157 (setq source
(cond ((file-exists-p alt
) alt
)
1158 ((file-exists-p source
) source
)
1161 (when (file-newer-than-file-p source user-init-file
)
1162 (message "Warning: %s is newer than %s"
1163 source user-init-file
)
1165 (setq user-init-file source
))))
1167 (unless inhibit-default-init
1168 (let ((inhibit-startup-screen nil
))
1169 ;; Users are supposed to be told their rights.
1170 ;; (Plus how to get help and how to undo.)
1171 ;; Don't you dare turn this off for anyone
1173 (load "default" t t
)))))))))
1175 ;; Do this without a condition-case if the user wants to debug.
1177 (condition-case error
1180 (setq init-file-had-error nil
))
1184 (format "An error occurred while loading `%s':\n\n%s%s%s\n\n\
1185 To ensure normal operation, you should investigate and remove the
1186 cause of the error in your initialization file. Start Emacs with
1187 the `--debug-init' option to view a complete error backtrace."
1189 (get (car error
) 'error-message
)
1190 (if (cdr error
) ": " "")
1191 (mapconcat (lambda (s) (prin1-to-string s t
))
1194 (setq init-file-had-error t
))))
1196 (if (and deactivate-mark transient-mark-mode
)
1197 (with-current-buffer (window-buffer)
1200 ;; If the user has a file of abbrevs, read it (unless -batch).
1201 (when (and (not noninteractive
)
1202 (file-exists-p abbrev-file-name
)
1203 (file-readable-p abbrev-file-name
))
1204 (quietly-read-abbrev-file abbrev-file-name
))
1206 ;; If the abbrevs came entirely from the init file or the
1207 ;; abbrevs file, they do not need saving.
1208 (setq abbrevs-changed nil
)
1210 ;; If we can tell that the init file altered debug-on-error,
1211 ;; arrange to preserve the value that it set up.
1212 (or (eq debug-on-error debug-on-error-initial
)
1213 (setq debug-on-error-should-be-set t
1214 debug-on-error-from-init-file debug-on-error
)))
1215 (if debug-on-error-should-be-set
1216 (setq debug-on-error debug-on-error-from-init-file
))
1217 (unless (or (default-value 'enable-multibyte-characters
)
1218 (eq orig-enable-multibyte
(default-value
1219 'enable-multibyte-characters
)))
1220 ;; Init file changed to unibyte. Reset existing multibyte
1221 ;; buffers (probably *scratch*, *Messages*, *Minibuf-0*).
1222 ;; Arguably this should only be done if they're free of
1223 ;; multibyte characters.
1224 (mapc (lambda (buffer)
1225 (with-current-buffer buffer
1226 (if enable-multibyte-characters
1227 (set-buffer-multibyte nil
))))
1229 ;; Also re-set the language environment in case it was
1230 ;; originally done before unibyte was set and is sensitive to
1231 ;; unibyte (display table, terminal coding system &c).
1232 (set-language-environment current-language-environment
)))
1234 ;; Do this here in case the init file sets mail-host-address.
1235 (if (equal user-mail-address
"")
1236 (setq user-mail-address
(or (getenv "EMAIL")
1237 (concat (user-login-name) "@"
1238 (or mail-host-address
1241 ;; If parameter have been changed in the init file which influence
1242 ;; face realization, clear the face cache so that new faces will
1244 (unless (and (eq scalable-fonts-allowed old-scalable-fonts-allowed
)
1245 (eq face-ignored-fonts old-face-ignored-fonts
))
1246 (clear-face-cache)))
1248 ;; If any package directory exists, initialize the package system.
1250 package-enable-at-startup
1251 (catch 'package-dir-found
1253 (if (boundp 'package-directory-list
)
1254 (setq dirs package-directory-list
)
1255 (dolist (f load-path
)
1257 (equal (file-name-nondirectory f
) "site-lisp")
1258 (push (expand-file-name "elpa" f
) dirs
))))
1259 (push (if (boundp 'package-user-dir
)
1261 (locate-user-emacs-file "elpa"))
1264 (when (file-directory-p dir
)
1265 (dolist (subdir (directory-files dir
))
1266 (when (let ((subdir (expand-file-name subdir dir
)))
1267 (and (file-directory-p subdir
)
1270 (package--description-file subdir
)
1272 (throw 'package-dir-found t
)))))))
1273 (package-initialize))
1275 (setq after-init-time
(current-time))
1276 (run-hooks 'after-init-hook
)
1278 ;; If *scratch* exists and init file didn't change its mode, initialize it.
1279 (if (get-buffer "*scratch*")
1280 (with-current-buffer "*scratch*"
1281 (if (eq major-mode
'fundamental-mode
)
1282 (funcall initial-major-mode
))))
1284 ;; Load library for our terminal type.
1285 ;; User init file can set term-file-prefix to nil to prevent this.
1286 (unless (or noninteractive
1287 initial-window-system
1289 (tty-run-terminal-initialization (selected-frame) nil t
))
1291 ;; Update the out-of-memory error message based on user's key bindings
1292 ;; for save-some-buffers.
1293 (setq memory-signal-data
1295 (substitute-command-keys "Memory exhausted--use \\[save-some-buffers] then exit and restart Emacs")))
1297 ;; Process the remaining args.
1298 (command-line-1 (cdr command-line-args
))
1300 ;; This is a problem because, e.g. if emacs.d/gnus.el exists,
1301 ;; trying to load gnus could load the wrong file.
1302 ;; OK, it would not matter if .emacs.d were at the end of load-path.
1303 ;; but for the sake of simplicity, we discourage it full-stop.
1304 ;; Ref eg http://lists.gnu.org/archive/html/emacs-devel/2012-03/msg00056.html
1306 ;; A bad element could come from user-emacs-file, the command line,
1307 ;; or EMACSLOADPATH, so we basically always have to check.
1309 (dolist (dir load-path
)
1311 (string-match-p "/[._]emacs\\.d/?\\'" dir
)
1312 (string-equal (file-name-as-directory (expand-file-name dir
))
1313 (expand-file-name user-emacs-directory
))
1315 (display-warning 'initialization
1316 (format "Your `load-path' seems to contain
1317 your `.emacs.d' directory: %s\n\
1318 This is likely to cause problems...\n\
1319 Consider using a subdirectory instead, e.g.: %s" dir
1320 (expand-file-name "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) (describe-gnu-project))
1404 "Display info on the GNU project")))
1405 " operating system.\n\n"
1406 :face variable-pitch
1407 :link
("Emacs Tutorial" ,(lambda (_button) (help-with-tutorial)))
1408 "\tLearn basic keystroke commands"
1410 (let* ((en "TUTORIAL")
1411 (tut (or (get-language-info current-language-environment
1414 (title (with-temp-buffer
1415 (insert-file-contents
1416 (expand-file-name tut tutorial-directory
)
1417 ;; We used to read only the first 256 bytes of
1418 ;; the tutorial, but that prevents the coding:
1419 ;; setting, if any, in file-local variables
1420 ;; section to be seen by insert-file-contents,
1421 ;; and results in gibberish when the language
1422 ;; environment's preferred encoding is
1423 ;; different from what the file-local variable
1424 ;; says. One case in point is Hebrew.
1426 (search-forward ".")
1427 (buffer-substring (point-min) (1- (point))))))
1428 ;; If there is a specific tutorial for the current language
1429 ;; environment and it is not English, append its title.
1430 (if (string= en tut
)
1432 (concat " (" title
")"))))
1434 :link
("Emacs Guided Tour"
1436 (browse-url "http://www.gnu.org/software/emacs/tour/"))
1437 "Browse http://www.gnu.org/software/emacs/tour/")
1438 "\tOverview of Emacs features at gnu.org\n"
1439 :link
("View Emacs Manual" ,(lambda (_button) (info-emacs-manual)))
1440 "\tView the Emacs manual using Info\n"
1441 :link
("Absence of Warranty" ,(lambda (_button) (describe-no-warranty)))
1442 "\tGNU Emacs comes with "
1443 :face
(variable-pitch (:slant oblique
))
1444 "ABSOLUTELY NO WARRANTY\n"
1445 :face variable-pitch
1446 :link
("Copying Conditions" ,(lambda (_button) (describe-copying)))
1447 "\tConditions for redistributing and changing Emacs\n"
1448 :link
("Ordering Manuals" ,(lambda (_button) (view-order-manuals)))
1449 "\tPurchasing printed copies of manuals\n"
1451 "A list of texts to show in the middle part of splash screens.
1452 Each element in the list should be a list of strings or pairs
1453 `:face FACE', like `fancy-splash-insert' accepts them.")
1455 (defconst fancy-about-text
1456 `((:face
(variable-pitch font-lock-comment-face
)
1459 ,(lambda (_button) (browse-url "http://www.gnu.org/software/emacs/"))
1460 "Browse http://www.gnu.org/software/emacs/")
1461 ", one component of the "
1464 (if (eq system-type
'gnu
/linux
)
1467 (browse-url "http://www.gnu.org/gnu/linux-and-gnu.html"))
1468 "Browse http://www.gnu.org/gnu/linux-and-gnu.html")
1469 `("GNU" ,(lambda (_button) (describe-gnu-project))
1470 "Display info on the GNU project.")))
1471 " operating system.\n"
1472 :face
(variable-pitch font-lock-builtin-face
)
1474 ,(lambda () (emacs-version))
1476 :face
(variable-pitch (:height
0.8))
1477 ,(lambda () emacs-copyright
)
1479 :face variable-pitch
1482 (view-file (expand-file-name "AUTHORS" data-directory
))
1483 (goto-char (point-min))))
1484 "\tMany people have contributed code included in GNU Emacs\n"
1485 :link
("Contributing"
1487 (view-file (expand-file-name "CONTRIBUTE" data-directory
))
1488 (goto-char (point-min))))
1489 "\tHow to contribute improvements to Emacs\n"
1491 :link
("GNU and Freedom" ,(lambda (_button) (describe-gnu-project)))
1492 "\tWhy we developed GNU Emacs, and the GNU operating system\n"
1493 :link
("Absence of Warranty" ,(lambda (_button) (describe-no-warranty)))
1494 "\tGNU Emacs comes with "
1495 :face
(variable-pitch (:slant oblique
))
1496 "ABSOLUTELY NO WARRANTY\n"
1497 :face variable-pitch
1498 :link
("Copying Conditions" ,(lambda (_button) (describe-copying)))
1499 "\tConditions for redistributing and changing Emacs\n"
1500 :link
("Getting New Versions" ,(lambda (_button) (describe-distribution)))
1501 "\tHow to obtain the latest version of Emacs\n"
1502 :link
("Ordering Manuals" ,(lambda (_button) (view-order-manuals)))
1503 "\tBuying printed manuals from the FSF\n"
1505 :link
("Emacs Tutorial" ,(lambda (_button) (help-with-tutorial)))
1506 "\tLearn basic Emacs keystroke commands"
1508 (let* ((en "TUTORIAL")
1509 (tut (or (get-language-info current-language-environment
1512 (title (with-temp-buffer
1513 (insert-file-contents
1514 (expand-file-name tut tutorial-directory
)
1516 (search-forward ".")
1517 (buffer-substring (point-min) (1- (point))))))
1518 ;; If there is a specific tutorial for the current language
1519 ;; environment and it is not English, append its title.
1520 (if (string= en tut
)
1522 (concat " (" title
")"))))
1524 :link
("Emacs Guided Tour"
1526 (browse-url "http://www.gnu.org/software/emacs/tour/"))
1527 "Browse http://www.gnu.org/software/emacs/tour/")
1528 "\tSee an overview of Emacs features at gnu.org"))
1529 "A list of texts to show in the middle part of the About screen.
1530 Each element in the list should be a list of strings or pairs
1531 `:face FACE', like `fancy-splash-insert' accepts them.")
1534 (defgroup fancy-splash-screen
()
1535 "Fancy splash screen when Emacs starts."
1537 :group
'initialization
)
1539 (defcustom fancy-splash-image nil
1540 "The image to show in the splash screens, or nil for defaults."
1541 :group
'fancy-splash-screen
1542 :type
'(choice (const :tag
"Default" nil
)
1543 (file :tag
"File")))
1546 (defvar splash-screen-keymap
1547 (let ((map (make-sparse-keymap)))
1548 (suppress-keymap map
)
1549 (set-keymap-parent map button-buffer-map
)
1550 (define-key map
"\C-?" 'scroll-down-command
)
1551 (define-key map
[?\S-\
] 'scroll-down-command
)
1552 (define-key map
" " 'scroll-up-command
)
1553 (define-key map
"q" 'exit-splash-screen
)
1555 "Keymap for splash screen buffer.")
1557 ;; These are temporary storage areas for the splash screen display.
1559 (defun fancy-splash-insert (&rest args
)
1560 "Insert text into the current buffer, with faces.
1561 Arguments from ARGS should be either strings; functions called
1562 with no args that return a string; pairs `:face FACE', where FACE
1563 is a face specification usable with `put-text-property'; or pairs
1564 `:link LINK' where LINK is a list of arguments to pass to
1565 `insert-button', of the form (LABEL ACTION [HELP-ECHO]), which
1566 specifies the button's label, `action' property and help-echo string.
1567 FACE and LINK can also be functions, which are evaluated to obtain
1568 a face or button specification."
1569 (let ((current-face nil
))
1571 (cond ((eq (car args
) :face
)
1572 (setq args
(cdr args
) current-face
(car args
))
1573 (if (functionp current-face
)
1574 (setq current-face
(funcall current-face
))))
1575 ((eq (car args
) :link
)
1576 (setq args
(cdr args
))
1577 (let ((spec (car args
)))
1578 (if (functionp spec
)
1579 (setq spec
(funcall spec
)))
1580 (insert-button (car spec
)
1581 'face
(list 'link current-face
)
1583 'help-echo
(concat "mouse-2, RET: "
1585 "Follow this link"))
1587 (t (insert (propertize (let ((it (car args
)))
1592 'help-echo
(startup-echo-area-message)))))
1593 (setq args
(cdr args
)))))
1595 (declare-function image-size
"image.c" (spec &optional pixels frame
))
1597 (defun fancy-splash-image-file ()
1598 (cond ((stringp fancy-splash-image
) fancy-splash-image
)
1600 (cond ((<= (display-planes) 8)
1601 (if (image-type-available-p 'xpm
)
1604 ((or (image-type-available-p 'svg
)
1605 (image-type-available-p 'imagemagick
))
1607 ((image-type-available-p 'png
)
1609 ((image-type-available-p 'xpm
)
1614 (defun fancy-splash-head ()
1615 "Insert the head part of the splash screen into the current buffer."
1616 (let* ((image-file (fancy-splash-image-file))
1617 (img (create-image image-file
))
1618 (image-width (and img
(car (image-size img
))))
1619 (window-width (window-width)))
1621 (when (> window-width image-width
)
1622 ;; Center the image in the window.
1623 (insert (propertize " " 'display
1624 `(space :align-to
(+ center
(-0.5 .
,img
)))))
1626 ;; Change the color of the XPM version of the splash image
1627 ;; so that it is visible with a dark frame background.
1628 (when (and (memq 'xpm img
)
1629 (eq (frame-parameter nil
'background-mode
) 'dark
))
1630 (setq img
(append img
'(:color-symbols
(("#000000" .
"gray30"))))))
1632 ;; Insert the image with a help-echo and a link.
1633 (make-button (prog1 (point) (insert-image img
)) (point)
1635 'help-echo
"mouse-2, RET: Browse http://www.gnu.org/"
1636 'action
(lambda (_button) (browse-url "http://www.gnu.org/"))
1640 (defun fancy-startup-tail (&optional concise
)
1641 "Insert the tail part of the splash screen into the current buffer."
1643 (fancy-splash-insert
1644 :face
'variable-pitch
1646 :link
`("Open a File"
1647 ,(lambda (_button) (call-interactively 'find-file
))
1648 "Specify a new file's name, to edit the file")
1650 :link
`("Open Home Directory"
1651 ,(lambda (_button) (dired "~"))
1652 "Open your home directory, to operate on its files")
1654 :link
`("Customize Startup"
1655 ,(lambda (_button) (customize-group 'initialization
))
1656 "Change initialization settings including this screen")
1658 (fancy-splash-insert
1659 :face
'variable-pitch
"To quit a partially entered command, type "
1660 :face
'default
"Control-g"
1661 :face
'variable-pitch
".\n")
1662 (fancy-splash-insert :face
`(variable-pitch font-lock-builtin-face
)
1666 :face
'(variable-pitch (:height
0.8))
1669 (when auto-save-list-file-prefix
1670 (let ((dir (file-name-directory auto-save-list-file-prefix
))
1671 (name (file-name-nondirectory auto-save-list-file-prefix
))
1673 ;; Don't warn if the directory for auto-save-list files does not
1675 (and (file-directory-p dir
)
1676 (setq files
(directory-files dir nil
(concat "\\`" name
) t
))
1677 (fancy-splash-insert :face
'(variable-pitch font-lock-comment-face
)
1678 (if (= (length files
) 1)
1679 "\nAn auto-save file list was found. "
1680 "\nAuto-save file lists were found. ")
1681 "If an Emacs session crashed recently,\ntype "
1682 :link
`("M-x recover-session RET"
1686 " to recover the files you were editing."))))
1689 (fancy-splash-insert
1690 :face
'variable-pitch
"\n"
1691 :link
`("Dismiss this startup screen"
1693 (when startup-screen-inhibit-startup-screen
1694 (customize-set-variable 'inhibit-startup-screen t
)
1695 (customize-mark-to-save 'inhibit-startup-screen
)
1697 (let ((w (get-buffer-window "*GNU Emacs*")))
1698 (and w
(not (one-window-p)) (delete-window w
)))
1699 (kill-buffer "*GNU Emacs*")))
1701 (when (or user-init-file custom-file
)
1702 (let ((checked (create-image "checked.xpm"
1703 nil nil
:ascent
'center
))
1704 (unchecked (create-image "unchecked.xpm"
1705 nil nil
:ascent
'center
)))
1709 :off-glyph unchecked
1710 'checked nil
'display unchecked
'follow-link t
1711 'action
(lambda (button)
1712 (if (overlay-get button
'checked
)
1713 (progn (overlay-put button
'checked nil
)
1714 (overlay-put button
'display
1715 (overlay-get button
:off-glyph
))
1716 (setq startup-screen-inhibit-startup-screen
1718 (overlay-put button
'checked t
)
1719 (overlay-put button
'display
1720 (overlay-get button
:on-glyph
))
1721 (setq startup-screen-inhibit-startup-screen t
)))))
1722 (fancy-splash-insert :face
'(variable-pitch (:height
0.9))
1723 " Never show it again."))))
1725 (defun exit-splash-screen ()
1726 "Stop displaying the splash screen buffer."
1730 (defun fancy-startup-screen (&optional concise
)
1731 "Display fancy startup screen.
1732 If CONCISE is non-nil, display a concise version of the
1733 splash screen in another window."
1734 (let ((splash-buffer (get-buffer-create "*GNU Emacs*")))
1735 (with-current-buffer splash-buffer
1736 (let ((inhibit-read-only t
))
1738 (setq default-directory command-line-default-directory
)
1739 (make-local-variable 'startup-screen-inhibit-startup-screen
)
1740 (if pure-space-overflow
1741 (insert pure-space-overflow-message
))
1743 (fancy-splash-head))
1744 (dolist (text fancy-startup-text
)
1745 (apply #'fancy-splash-insert text
)
1747 (skip-chars-backward "\n")
1748 (delete-region (point) (point-max))
1750 (fancy-startup-tail concise
))
1751 (use-local-map splash-screen-keymap
)
1752 (setq-local browse-url-browser-function
'eww-browse-url
)
1755 (set-buffer-modified-p nil
)
1756 (if (and view-read-only
(not view-mode
))
1757 (view-mode-enter nil
'kill-buffer
))
1758 (goto-char (point-min))
1759 (forward-line (if concise
2 4)))
1762 (display-buffer splash-buffer
)
1763 ;; If the splash screen is in a split window, fit it.
1764 (let ((window (get-buffer-window splash-buffer t
)))
1766 (eq window
(selected-window))
1767 (eq window
(next-window window
))
1768 (fit-window-to-buffer window
))))
1769 (switch-to-buffer splash-buffer
))))
1771 (defun fancy-about-screen ()
1772 "Display fancy About screen."
1773 (let ((frame (fancy-splash-frame)))
1774 (save-selected-window
1775 (select-frame frame
)
1776 (switch-to-buffer "*About GNU Emacs*")
1777 (setq buffer-undo-list t
)
1778 (let ((inhibit-read-only t
))
1780 (if pure-space-overflow
1781 (insert pure-space-overflow-message
))
1783 (dolist (text fancy-about-text
)
1784 (apply #'fancy-splash-insert text
)
1786 (set-buffer-modified-p nil
)
1787 (goto-char (point-min))
1788 (force-mode-line-update))
1789 (use-local-map splash-screen-keymap
)
1790 (setq-local browse-url-browser-function
'eww-browse-url
)
1792 (setq buffer-read-only t
)
1793 (goto-char (point-min))
1796 (defun fancy-splash-frame ()
1797 "Return the frame to use for the fancy splash screen.
1798 Returning non-nil does not mean we should necessarily
1799 use the fancy splash screen, but if we do use it,
1800 we put it on this frame."
1802 ;; MS-Windows needs this to have a chance to make the initial
1804 (if (eq system-type
'windows-nt
)
1806 (dolist (frame (append (frame-list) (list (selected-frame))))
1807 (if (and (frame-visible-p frame
)
1808 (not (window-minibuffer-p (frame-selected-window frame
))))
1809 (setq chosen-frame frame
)))
1812 (defun use-fancy-splash-screens-p ()
1813 "Return t if fancy splash screens should be used."
1814 (when (and (display-graphic-p)
1815 (or (and (display-color-p)
1816 (image-type-available-p 'xpm
))
1817 (image-type-available-p 'pbm
)))
1818 (let ((frame (fancy-splash-frame)))
1820 (let* ((img (create-image (fancy-splash-image-file)))
1821 (image-height (and img
(cdr (image-size img nil frame
))))
1822 ;; We test frame-height so that, if the frame is split
1823 ;; by displaying a warning, that doesn't cause the normal
1824 ;; splash screen to be used.
1825 (frame-height (1- (frame-height frame
))))
1826 (> frame-height
(+ image-height
19)))))))
1829 (defun normal-splash-screen (&optional startup concise
)
1830 "Display non-graphic splash screen.
1831 If optional argument STARTUP is non-nil, display the startup screen
1832 after Emacs starts. If STARTUP is nil, display the About screen.
1833 If CONCISE is non-nil, display a concise version of the
1834 splash screen in another window."
1835 (let ((splash-buffer (get-buffer-create "*About GNU Emacs*")))
1836 (with-current-buffer splash-buffer
1837 (setq buffer-read-only nil
)
1839 (setq default-directory command-line-default-directory
)
1840 (set (make-local-variable 'tab-width
) 8)
1842 (if pure-space-overflow
1843 (insert pure-space-overflow-message
))
1845 ;; The convention for this piece of code is that
1846 ;; each piece of output starts with one or two newlines
1847 ;; and does not end with any newlines.
1848 (insert (if startup
"Welcome to GNU Emacs" "This is GNU Emacs"))
1850 (if (eq system-type
'gnu
/linux
)
1851 ", one component of the GNU/Linux operating system.\n"
1852 ", a part of the GNU operating system.\n"))
1855 (if (display-mouse-p)
1856 ;; The user can use the mouse to activate menus
1857 ;; so give help in terms of menu items.
1858 (normal-mouse-startup-screen)
1860 ;; No mouse menus, so give help using kbd commands.
1861 (normal-no-mouse-startup-screen))
1863 (normal-about-screen))
1865 ;; The rest of the startup screen is the same on all
1866 ;; kinds of terminals.
1868 ;; Give information on recovering, if there was a crash.
1870 auto-save-list-file-prefix
1871 ;; Don't signal an error if the
1872 ;; directory for auto-save-list files
1873 ;; does not yet exist.
1874 (file-directory-p (file-name-directory
1875 auto-save-list-file-prefix
))
1877 (file-name-directory auto-save-list-file-prefix
)
1880 (regexp-quote (file-name-nondirectory
1881 auto-save-list-file-prefix
)))
1883 (insert "\n\nIf an Emacs session crashed recently, "
1884 "type Meta-x recover-session RET\nto recover"
1885 " the files you were editing.\n"))
1887 (use-local-map splash-screen-keymap
)
1889 ;; Display the input that we set up in the buffer.
1890 (set-buffer-modified-p nil
)
1891 (setq buffer-read-only t
)
1892 (if (and view-read-only
(not view-mode
))
1893 (view-mode-enter nil
'kill-buffer
))
1894 (if startup
(rename-buffer "*GNU Emacs*" t
))
1895 (goto-char (point-min)))
1897 (display-buffer splash-buffer
)
1898 (switch-to-buffer splash-buffer
))))
1900 (defun normal-mouse-startup-screen ()
1901 ;; The user can use the mouse to activate menus
1902 ;; so give help in terms of menu items.
1904 To follow a link, click Mouse-1 on it, or move to it and type RET.
1905 To quit a partially entered command, type Control-g.\n")
1907 (insert "\nImportant Help menu items:\n")
1908 (insert-button "Emacs Tutorial"
1909 'action
(lambda (_button) (help-with-tutorial))
1911 (insert "\t\tLearn basic Emacs keystroke commands\n")
1912 (insert-button "Read the Emacs Manual"
1913 'action
(lambda (_button) (info-emacs-manual))
1915 (insert "\tView the Emacs manual using Info\n")
1916 (insert-button "\(Non)Warranty"
1917 'action
(lambda (_button) (describe-no-warranty))
1919 (insert "\t\tGNU Emacs comes with ABSOLUTELY NO WARRANTY\n")
1920 (insert-button "Copying Conditions"
1921 'action
(lambda (_button) (describe-copying))
1923 (insert "\tConditions for redistributing and changing Emacs\n")
1924 (insert-button "More Manuals / Ordering Manuals"
1925 'action
(lambda (_button) (view-order-manuals))
1927 (insert " How to order printed manuals from the FSF\n")
1929 (insert "\nUseful tasks:\n")
1930 (insert-button "Visit New File"
1931 'action
(lambda (_button) (call-interactively 'find-file
))
1933 (insert "\t\tSpecify a new file's name, to edit the file\n")
1934 (insert-button "Open Home Directory"
1935 'action
(lambda (_button) (dired "~"))
1937 (insert "\tOpen your home directory, to operate on its files\n")
1938 (insert-button "Customize Startup"
1939 'action
(lambda (_button) (customize-group 'initialization
))
1941 (insert "\tChange initialization settings including this screen\n")
1943 (insert "\n" (emacs-version)
1944 "\n" emacs-copyright
))
1946 (defun normal-no-mouse-startup-screen ()
1947 "Show a splash screen suitable for displays without mouse support."
1948 (let* ((c-h-accessible
1949 ;; If normal-erase-is-backspace is used on a tty, there's
1950 ;; no way to invoke C-h and you have to use F1 instead.
1951 (or (not (char-table-p keyboard-translate-table
))
1952 (eq (aref keyboard-translate-table ?\C-h
) ?\C-h
)))
1953 (minor-mode-overriding-map-alist
1954 (cons (cons (not c-h-accessible
)
1955 ;; If C-h can't be invoked, temporarily disable its
1956 ;; binding, so where-is uses alternative bindings.
1957 (let ((map (make-sparse-keymap)))
1958 (define-key map
[?\C-h
] 'undefined
)
1960 minor-mode-overriding-map-alist
)))
1962 (insert (format "\nGet help\t %s\n"
1963 (let ((where (where-is-internal 'help-command nil t
)))
1965 ((equal where
[?\C-h
])
1966 "C-h (Hold down CTRL and press h)")
1967 (where (key-description where
))
1969 (insert-button "Emacs manual"
1970 'action
(lambda (_button) (info-emacs-manual))
1972 (insert (substitute-command-keys"\t \\[info-emacs-manual]\t"))
1973 (insert-button "Browse manuals"
1974 'action
(lambda (_button) (Info-directory))
1976 (insert (substitute-command-keys "\t \\[info]\n"))
1977 (insert-button "Emacs tutorial"
1978 'action
(lambda (_button) (help-with-tutorial))
1980 (insert (substitute-command-keys
1981 "\t \\[help-with-tutorial]\tUndo changes\t \\[undo]\n"))
1982 (insert-button "Buy manuals"
1983 'action
(lambda (_button) (view-order-manuals))
1985 (insert (substitute-command-keys
1986 "\t \\[view-order-manuals]\tExit Emacs\t \\[save-buffers-kill-terminal]")))
1988 ;; Say how to use the menu bar with the keyboard.
1990 (insert-button "Activate menubar"
1991 'action
(lambda (_button) (tmm-menubar))
1993 (if (and (eq (key-binding "\M-`") 'tmm-menubar
)
1994 (eq (key-binding [f10]) 'tmm-menubar))
1995 (insert " F10 or ESC ` or M-`")
1996 (insert (substitute-command-keys " \\[tmm-menubar]")))
1998 ;; Many users seem to have problems with these.
2000 \(`C-' means use the CTRL key. `M-' means use the Meta (or Alt) key.
2001 If you have no Meta key, you may instead type ESC followed by the character.)")
2003 ;; Insert links to useful tasks
2004 (insert "\nUseful tasks:\n")
2006 (insert-button "Visit New File"
2007 'action (lambda (_button) (call-interactively 'find-file))
2010 (insert-button "Open Home Directory"
2011 'action (lambda (_button) (dired "~"))
2015 (insert-button "Customize Startup"
2016 'action (lambda (_button) (customize-group 'initialization))
2019 (insert-button "Open *scratch* buffer"
2020 'action (lambda (_button) (switch-to-buffer
2021 (get-buffer-create "*scratch*")))
2024 (insert "\n" (emacs-version) "\n" emacs-copyright "\n")
2025 (insert (substitute-command-keys
2027 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type \\[describe-no-warranty] for "))
2028 (insert-button "full details"
2029 'action (lambda (_button) (describe-no-warranty))
2031 (insert (substitute-command-keys ".
2032 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
2033 of Emacs and modify it; type \\[describe-copying] to see "))
2034 (insert-button "the conditions"
2035 'action (lambda (_button) (describe-copying))
2037 (insert (substitute-command-keys".
2038 Type \\[describe-distribution] for information on "))
2039 (insert-button "getting the latest version"
2040 'action (lambda (_button) (describe-distribution))
2044 (defun normal-about-screen ()
2045 (insert "\n" (emacs-version) "\n" emacs-copyright "\n\n")
2047 (insert "To follow a link, click Mouse-1 on it, or move to it and type RET.\n\n")
2049 (insert-button "Authors"
2052 (view-file (expand-file-name "AUTHORS" data-directory))
2053 (goto-char (point-min)))
2055 (insert "\t\tMany people have contributed code included in GNU Emacs\n")
2057 (insert-button "Contributing"
2060 (view-file (expand-file-name "CONTRIBUTE" data-directory))
2061 (goto-char (point-min)))
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 (let ((file-count 0)
2161 (command-line-args-left args-left)
2163 (when command-line-args-left
2164 ;; We have command args; process them.
2165 (let ((dir command-line-default-directory)
2167 ;; This approach loses for "-batch -L DIR --eval "(require foo)",
2168 ;; if foo is intended to be found in DIR.
2170 ;; The directories listed in --directory/-L options will *appear*
2171 ;; at the front of `load-path' in the order they appear on the
2172 ;; command-line. We cannot do this by *placing* them at the front
2173 ;; in the order they appear, so we need this variable to hold them,
2176 ;; To DTRT we keep track of the splice point and modify `load-path'
2177 ;; straight away upon any --directory/-L option.
2179 just-files ;; t if this follows the magic -- option.
2180 ;; This includes our standard options' long versions
2181 ;; and long versions of what's on command-switch-alist.
2183 (append '("--funcall" "--load" "--insert" "--kill"
2184 "--directory" "--eval" "--execute" "--no-splash"
2185 "--find-file" "--visit" "--file" "--no-desktop")
2186 (mapcar (lambda (elt) (concat "-" (car elt)))
2187 command-switch-alist)))
2191 ;; Add the long X options to longopts.
2192 (dolist (tem command-line-x-option-alist)
2193 (if (string-match "^--" (car tem))
2194 (push (car tem) longopts)))
2196 ;; Add the long NS options to longopts.
2197 (dolist (tem command-line-ns-option-alist)
2198 (if (string-match "^--" (car tem))
2199 (push (list (car tem)) longopts)))
2201 ;; Loop, processing options.
2202 (while command-line-args-left
2203 (let* ((argi (car command-line-args-left))
2206 (setq command-line-args-left (cdr command-line-args-left))
2208 ;; Do preliminary decoding of the option.
2210 ;; After --, don't look for options; treat all args as files.
2212 ;; Convert long options to ordinary options
2213 ;; and separate out an attached option argument into argval.
2214 (when (string-match "\\`\\(--[^=]*\\)=" argi)
2215 (setq argval (substring argi (match-end 0))
2216 argi (match-string 1 argi)))
2217 (when (string-match "\\`--?[^-]" orig-argi)
2218 (setq completion (try-completion argi longopts))
2219 (if (eq completion t)
2220 (setq argi (substring argi 1))
2221 (if (stringp completion)
2222 (let ((elt (member completion longopts)))
2224 (error "Option `%s' is ambiguous" argi))
2225 (setq argi (substring (car elt) 1)))
2229 ;; Execute the option.
2230 (cond ((setq tem (assoc argi command-switch-alist))
2232 (let ((command-line-args-left
2233 (cons argval command-line-args-left)))
2234 (funcall (cdr tem) argi))
2235 (funcall (cdr tem) argi)))
2237 ((equal argi "-no-splash")
2238 (setq inhibit-startup-screen t))
2240 ((member argi '("-f" ; what the manual claims
2242 "-e")) ; what the source used to say
2243 (setq inhibit-startup-screen t)
2244 (setq tem (intern (or argval (pop command-line-args-left))))
2246 (command-execute tem)
2249 ((member argi '("-eval" "-execute"))
2250 (setq inhibit-startup-screen t)
2251 (eval (read (or argval (pop command-line-args-left)))))
2253 ((member argi '("-L" "-directory"))
2254 ;; -L :/foo adds /foo to the _end_ of load-path.
2257 (format "\\`%s" path-separator)
2258 (setq tem (or argval (pop command-line-args-left))))
2259 (setq tem (substring tem 1)
2261 (setq tem (expand-file-name
2262 (command-line-normalize-file-name tem)))
2263 (cond (append (setq load-path
2264 (append load-path (list tem)))
2265 (if splice (setq splice load-path)))
2266 (splice (setcdr splice (cons tem (cdr splice)))
2267 (setq splice (cdr splice)))
2268 (t (setq load-path (cons tem load-path)
2269 splice load-path)))))
2271 ((member argi '("-l" "-load"))
2272 (let* ((file (command-line-normalize-file-name
2273 (or argval (pop command-line-args-left))))
2274 ;; Take file from default dir if it exists there;
2275 ;; otherwise let `load' search for it.
2276 (file-ex (expand-file-name file)))
2277 (when (file-exists-p file-ex)
2278 (setq file file-ex))
2281 ;; This is used to handle -script. It's not clear
2282 ;; we need to document it (it is totally internal).
2283 ((member argi '("-scriptload"))
2284 (let* ((file (command-line-normalize-file-name
2285 (or argval (pop command-line-args-left))))
2286 ;; Take file from default dir.
2287 (file-ex (expand-file-name file)))
2288 (load file-ex nil t t)))
2290 ((equal argi "-insert")
2291 (setq inhibit-startup-screen t)
2292 (setq tem (or argval (pop command-line-args-left)))
2294 (error "File name omitted from `-insert' option"))
2295 (insert-file-contents (command-line-normalize-file-name tem)))
2297 ((equal argi "-kill")
2300 ;; This is for when they use --no-desktop with -q, or
2301 ;; don't load Desktop in their .emacs. If desktop.el
2302 ;; _is_ loaded, it will handle this switch, and we
2303 ;; won't see it by the time we get here.
2304 ((equal argi "-no-desktop")
2305 (message "\"--no-desktop\" ignored because the Desktop package is not loaded"))
2307 ((string-match "^\\+[0-9]+\\'" argi)
2308 (setq line (string-to-number argi)))
2310 ((string-match "^\\+\\([0-9]+\\):\\([0-9]+\\)\\'" argi)
2311 (setq line (string-to-number (match-string 1 argi))
2312 column (string-to-number (match-string 2 argi))))
2314 ((setq tem (assoc orig-argi command-line-x-option-alist))
2315 ;; Ignore X-windows options and their args if not using X.
2316 (setq command-line-args-left
2317 (nthcdr (nth 1 tem) command-line-args-left)))
2319 ((setq tem (assoc orig-argi command-line-ns-option-alist))
2320 ;; Ignore NS-windows options and their args if not using NS.
2321 (setq command-line-args-left
2322 (nthcdr (nth 1 tem) command-line-args-left)))
2324 ((member argi '("-find-file" "-file" "-visit"))
2325 (setq inhibit-startup-screen t)
2326 ;; An explicit option to specify visiting a file.
2327 (setq tem (or argval (pop command-line-args-left)))
2328 (unless (stringp tem)
2329 (error "File name omitted from `%s' option" argi))
2330 (setq file-count (1+ file-count))
2331 (let ((file (expand-file-name
2332 (command-line-normalize-file-name tem)
2334 (if (= file-count 1)
2335 (setq first-file-buffer (find-file file))
2336 (find-file-other-window file)))
2337 (unless (zerop line)
2338 (goto-char (point-min))
2339 (forward-line (1- line)))
2341 (unless (< column 1)
2342 (move-to-column (1- column)))
2345 ;; These command lines now have no effect.
2346 ((string-match "\\`--?\\(no-\\)?\\(uni\\|multi\\)byte$" argi)
2347 (display-warning 'initialization
2348 (format "Ignoring obsolete arg %s" argi)))
2351 (setq just-files t))
2353 ;; We have almost exhausted our options. See if the
2354 ;; user has made any other command-line options available
2355 (let ((hooks command-line-functions)
2358 (not (setq did-hook (funcall (car hooks)))))
2359 (setq hooks (cdr hooks)))
2361 ;; Presume that the argument is a file name.
2363 (if (string-match "\\`-" argi)
2364 (error "Unknown option `%s'" argi))
2365 (unless initial-window-system
2366 (setq inhibit-startup-screen t))
2367 (setq file-count (1+ file-count))
2370 (command-line-normalize-file-name orig-argi)
2372 (cond ((= file-count 1)
2373 (setq first-file-buffer (find-file file)))
2374 (inhibit-startup-screen
2375 (find-file-other-window file))
2376 (t (find-file file))))
2377 (unless (zerop line)
2378 (goto-char (point-min))
2379 (forward-line (1- line)))
2381 (unless (< column 1)
2382 (move-to-column (1- column)))
2383 (setq column 0))))))
2384 ;; In unusual circumstances, the execution of Lisp code due
2385 ;; to command-line options can cause the last visible frame
2386 ;; to be deleted. In this case, kill emacs to avoid an
2388 (unless (frame-live-p (selected-frame)) (kill-emacs nil))))))
2390 (when (eq initial-buffer-choice t)
2391 ;; When initial-buffer-choice equals t make sure that *scratch*
2393 (get-buffer-create "*scratch*"))
2395 ;; If *scratch* exists and is empty, insert initial-scratch-message.
2396 ;; Do this before switching to *scratch* below to handle bug#9605.
2397 (and initial-scratch-message
2398 (get-buffer "*scratch*")
2399 (with-current-buffer "*scratch*"
2400 (when (zerop (buffer-size))
2401 (insert initial-scratch-message)
2402 (set-buffer-modified-p nil))))
2404 (when initial-buffer-choice
2406 (cond ((stringp initial-buffer-choice)
2407 (find-file-noselect initial-buffer-choice))
2408 ((functionp initial-buffer-choice)
2409 (funcall initial-buffer-choice)))))
2411 (if (buffer-live-p buf) buf (get-buffer-create "*scratch*"))
2414 (if (or inhibit-startup-screen
2415 initial-buffer-choice
2418 inhibit-x-resources)
2420 ;; Not displaying a startup screen. If 3 or more files
2421 ;; visited, and not all visible, show user what they all are.
2422 (and (> file-count 2)
2423 (not noninteractive)
2424 (not inhibit-startup-buffer-menu)
2425 (or (get-buffer-window first-file-buffer)
2428 ;; Display a startup screen, after some preparations.
2430 ;; If there are no switches to process, we might as well
2431 ;; run this hook now, and there may be some need to do it
2432 ;; before doing any output.
2433 (run-hooks 'emacs-startup-hook)
2434 (and term-setup-hook
2435 (run-hooks 'term-setup-hook))
2436 (setq inhibit-startup-hooks t)
2438 ;; It's important to notice the user settings before we
2439 ;; display the startup message; otherwise, the settings
2440 ;; won't take effect until the user gives the first
2441 ;; keystroke, and that's distracting.
2442 (when (fboundp 'frame-notice-user-settings)
2443 (frame-notice-user-settings))
2445 ;; If there are no switches to process, we might as well
2446 ;; run this hook now, and there may be some need to do it
2447 ;; before doing any output.
2448 (when window-setup-hook
2449 (run-hooks 'window-setup-hook)
2450 ;; Don't let the hook be run twice.
2451 (setq window-setup-hook nil))
2453 ;; ;; Do this now to avoid an annoying delay if the user
2454 ;; ;; clicks the menu bar during the sit-for.
2455 ;; (when (display-popup-menus-p)
2456 ;; (precompute-menubar-bindings))
2457 ;; (with-no-warnings
2458 ;; (setq menubar-bindings-done t))
2460 (display-startup-screen (> file-count 0)))))
2462 (defun command-line-normalize-file-name (file)
2463 "Collapse multiple slashes to one, to handle non-Emacs file names."
2465 ;; Use arg 1 so that we don't collapse // at the start of the file name.
2466 ;; That is significant on some systems.
2467 ;; However, /// at the beginning is supposed to mean just /, not //.
2469 (if (memq system-type '(ms-dos windows-nt))
2470 "^\\([\\/][\\/][\\/]\\)+"
2473 (setq file (replace-match "/" t t file)))
2474 (if (memq system-type '(ms-dos windows-nt))
2475 (while (string-match "\\([\\/][\\/]\\)+" file 1)
2476 (setq file (replace-match "/" t t file)))
2477 (while (string-match "//+" file 1)
2478 (setq file (replace-match "/" t t file))))
2481 ;;; startup.el ends here
HCoop / bpt / emacs.git / blob