lisp/startup.el

   1 ;;; startup.el --- process Emacs shell arguments
   2
   3 ;; Copyright (C) 1985, 86, 92, 94, 95, 96, 97, 98, 99, 2000
   4 ;;   Free Software Foundation, Inc.
   5
   6 ;; Maintainer: FSF
   7 ;; Keywords: internal
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;;; Commentary:
  27
  28 ;; This file parses the command line and gets Emacs running.  Options on
  29 ;; the command line are handled in precedence order.  The order is the
  30 ;; one in the list below; first described means first handled.  Options
  31 ;; within each category (delimited by a bar) are handled in the order
  32 ;; encountered on the command line.
  33
  34 ;; -------------------------
  35 ;; -version                  Print Emacs version to stderr, then exit
  36 ;; --version                 successfully right away.
  37 ;;                           This option is handled by emacs.c
  38 ;; -------------------------
  39 ;; -help                     Print a short usage description and exit
  40 ;; --help                    successfully right away.
  41 ;;                           This option is handled by emacs.c
  42 ;; -------------------------
  43 ;; -nl                       Do not use shared memory (for systems that
  44 ;; -no-shared-memory         support this) for the dumped Emacs data.
  45 ;;                           This option is handled by emacs.c
  46 ;;
  47 ;; -map                      For VMS.
  48 ;; --map-data                This option is handled by emacs.c
  49 ;; -------------------------
  50 ;; -t FILE                   Use FILE as the name of the terminal.
  51 ;; --terminal FILE           Using this implies "-nw" also.
  52 ;;                           This option is handled by emacs.c
  53 ;; -------------------------
  54 ;; -d DISPNAME               Use DISPNAME as the name of the X
  55 ;; -display DISPNAME         display for the initial frame.
  56 ;; --display DISPNAME        This option is handled by emacs.c
  57 ;; -------------------------
  58 ;; -nw                       Do not use a windows system (but use the
  59 ;; --no-windows              terminal instead.)
  60 ;;                           This option is handled by emacs.c
  61 ;; -------------------------
  62 ;; -batch                    Execute noninteractively (messages go to stdout,
  63 ;; --batch                   variable noninteractive set to t)
  64 ;;                           This option is handled by emacs.c
  65 ;; -------------------------
  66 ;; -q                        Do not load user's init file and do not load
  67 ;; -no-init-file             "default.el".  Regardless of this switch,
  68 ;; --no-init-file            "site-start" is still loaded.
  69 ;; -------------------------
  70 ;; -no-site-file             Do not load "site-start.el".  (This is the ONLY
  71 ;; --no-site-file            way to prevent loading that file.)
  72 ;; -------------------------
  73 ;; -u USER                   Load USER's init file instead of the init
  74 ;; -user USER                file belonging to the user starting Emacs.
  75 ;; --user USER
  76 ;; -------------------------
  77 ;; -debug-init               Don't catch errors in init files; let the
  78 ;; --debug-init              debugger run.
  79 ;; -------------------------
  80 ;; -i ICONTYPE               Set type of icon using when Emacs is
  81 ;; -itype ICONTYPE           iconified under X.
  82 ;; --icon-type ICONTYPE      This option is passed on to term/x-win.el
  83 ;;
  84 ;; -iconic                   Start Emacs iconified.
  85 ;; --iconic                  This option is passed on to term/x-win.el
  86 ;; -------------------------
  87 ;; Various X options for colors/fonts/geometry/title etc.
  88 ;; These options are passed on to term/x-win.el which see.  Certain
  89 ;; of these are also found in term/pc-win.el
  90 ;; -------------------------
  91 ;; FILE                      Visit FILE.
  92 ;; -visit FILE
  93 ;; --visit FILE
  94 ;; -file FILE
  95 ;; --file FILE
  96 ;;
  97 ;; -L DIRNAME                Add DIRNAME to load-path
  98 ;; -directory DIRNAME
  99 ;; --directory DIRNAME
 100 ;;
 101 ;; -l FILE                   Load and execute the Emacs lisp code
 102 ;; -load FILE                in FILE.
 103 ;; --load FILE
 104 ;;
 105 ;; -f FUNC                   Execute Emacs lisp function FUNC with
 106 ;; -funcall FUNC             no arguments.  The "-e" form is outdated
 107 ;; --funcall FUNC            and should not be used.  (It's a typo
 108 ;; -e FUNC                   promoted to a feature.)
 109 ;;
 110 ;; -eval FORM                Execute Emacs lisp form FORM.
 111 ;; --eval FORM
 112 ;; -execute EXPR
 113 ;; --execute EXPR
 114 ;;
 115 ;; -insert FILE              Insert the contents of FILE into buffer.
 116 ;; --insert FILE
 117 ;; -------------------------
 118 ;; -kill                     Kill (exit) Emacs right away.
 119 ;; --kill
 120 ;; -------------------------
 121
 122 ;;; Code:
 123
 124 (setq top-level '(normal-top-level))
 125
 126 (defvar command-line-processed nil
 127   "Non-nil once command line has been processed")
 128
 129 (defgroup initialization nil
 130   "Emacs start-up procedure"
 131   :group 'internal)
 132
 133 (defcustom inhibit-startup-message nil
 134   "*Non-nil inhibits the initial startup message.
 135 This is for use in your personal init file, once you are familiar
 136 with the contents of the startup message."
 137   :type 'boolean
 138   :group 'initialization)
 139
 140 (defcustom inhibit-startup-echo-area-message nil
 141   "*Non-nil inhibits the initial startup echo area message.
 142 Setting this variable takes effect
 143 only if you do it with the customization buffer
 144 or if your `.emacs' file contains a line of this form:
 145  (setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\")
 146 If your `.emacs' file is byte-compiled, use the following form instead:
 147  (eval '(setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\"))
 148 Thus, someone else using a copy of your `.emacs' file will see
 149 the startup message unless he personally acts to inhibit it."
 150   :type '(choice (const :tag "Don't inhibit")
 151                  (string :tag "Enter your user name, to inhibit"))
 152   :group 'initialization)
 153
 154 (defcustom inhibit-default-init nil
 155   "*Non-nil inhibits loading the `default' library."
 156   :type 'boolean
 157   :group 'initialization)
 158
 159 (defvar command-switch-alist nil
 160   "Alist of command-line switches.
 161 Elements look like (SWITCH-STRING . HANDLER-FUNCTION).
 162 HANDLER-FUNCTION receives switch name as sole arg;
 163 remaining command-line args are in the variable `command-line-args-left'.")
 164
 165 (defvar command-line-args-left nil
 166   "List of command-line args not yet processed.")
 167
 168 (defvar command-line-functions nil    ;; lrs 7/31/89
 169   "List of functions to process unrecognized command-line arguments.
 170 Each function should access the dynamically bound variables
 171 `argi' (the current argument) and `command-line-args-left' (the remaining
 172 arguments).  The function should return non-nil only if it recognizes and
 173 processes `argi'.  If it does so, it may consume successive arguments by
 174 altering `command-line-args-left' to remove them.")
 175
 176 (defvar command-line-default-directory nil
 177   "Default directory to use for command line arguments.
 178 This is normally copied from `default-directory' when Emacs starts.")
 179
 180 ;;; This is here, rather than in x-win.el, so that we can ignore these
 181 ;;; options when we are not using X.
 182 (defconst command-line-x-option-alist
 183   '(("-bw" 1 x-handle-numeric-switch border-width)
 184     ("-d" 1 x-handle-display)
 185     ("-display" 1 x-handle-display)
 186     ("-name" 1 x-handle-name-switch)
 187     ("-title" 1 x-handle-switch title)
 188     ("-T" 1 x-handle-switch title)
 189     ("-r" 0 x-handle-switch reverse t)
 190     ("-rv" 0 x-handle-switch reverse t)
 191     ("-reverse" 0 x-handle-switch reverse t)
 192     ("-reverse-video" 0 x-handle-switch reverse t)
 193     ("-fn" 1 x-handle-switch font)
 194     ("-font" 1 x-handle-switch font)
 195     ("-ib" 1 x-handle-numeric-switch internal-border-width)
 196     ("-g" 1 x-handle-geometry)
 197     ("-lsp" 1 x-handle-numeric-switch line-spacing)
 198     ("-geometry" 1 x-handle-geometry)
 199     ("-fg" 1 x-handle-switch foreground-color)
 200     ("-foreground" 1 x-handle-switch foreground-color)
 201     ("-bg" 1 x-handle-switch background-color)
 202     ("-background" 1 x-handle-switch background-color)
 203     ("-ms" 1 x-handle-switch mouse-color)
 204     ("-itype" 0 x-handle-switch icon-type t)
 205     ("-i" 0 x-handle-switch icon-type t)
 206     ("-iconic" 0 x-handle-iconic)
 207     ("-xrm" 1 x-handle-xrm-switch)
 208     ("-cr" 1 x-handle-switch cursor-color)
 209     ("-vb" 0 x-handle-switch vertical-scroll-bars t)
 210     ("-hb" 0 x-handle-switch horizontal-scroll-bars t)
 211     ("-bd" 1 x-handle-switch)
 212     ("--border-width" 1 x-handle-numeric-switch border-width)
 213     ("--display" 1 x-handle-display)
 214     ("--name" 1 x-handle-name-switch)
 215     ("--title" 1 x-handle-switch title)
 216     ("--reverse-video" 0 x-handle-switch reverse t)
 217     ("--font" 1 x-handle-switch font)
 218     ("--internal-border" 1 x-handle-numeric-switch internal-border-width)
 219     ("--geometry" 1 x-handle-geometry)
 220     ("--foreground-color" 1 x-handle-switch foreground-color)
 221     ("--background-color" 1 x-handle-switch background-color)
 222     ("--mouse-color" 1 x-handle-switch mouse-color)
 223     ("--icon-type" 0 x-handle-switch icon-type t)
 224     ("--iconic" 0 x-handle-iconic)
 225     ("--xrm" 1 x-handle-xrm-switch)
 226     ("--cursor-color" 1 x-handle-switch cursor-color)
 227     ("--vertical-scroll-bars" 0 x-handle-switch vertical-scroll-bars t)
 228     ("--line-spacing" 1 x-handle-numeric-switch line-spacing)
 229     ("--border-color" 1 x-handle-switch border-width))
 230   "Alist of X Windows options.
 231 Each element has the form
 232   (NAME NUMARGS HANDLER FRAME-PARAM VALUE)
 233 where NAME is the option name string, NUMARGS is the number of arguments
 234 that the option accepts, HANDLER is a function to call to handle the option.
 235 FRAME-PARAM (optional) is the frame parameter this option specifies,
 236 and VALUE is the value which is given to that frame parameter
 237 \(most options use the argument for this, so VALUE is not present).")
 238
 239 (defvar before-init-hook nil
 240   "Normal hook run after handling urgent options but before loading init files.")
 241
 242 (defvar after-init-hook nil
 243   "Normal hook run after loading the init files, `~/.emacs' and `default.el'.
 244 There is no `condition-case' around the running of these functions;
 245 therefore, if you set `debug-on-error' non-nil in `.emacs',
 246 an error in one of these functions will invoke the debugger.")
 247
 248 (defvar emacs-startup-hook nil
 249   "Normal hook run after loading init files and handling the command line.")
 250
 251 (defvar term-setup-hook nil
 252   "Normal hook run after loading terminal-specific Lisp code.
 253 It also follows `emacs-startup-hook'.  This hook exists for users to set,
 254 so as to override the definitions made by the terminal-specific file.
 255 Emacs never sets this variable itself.")
 256
 257 (defvar keyboard-type nil
 258   "The brand of keyboard you are using.
 259 This variable is used to define
 260 the proper function and keypad keys for use under X.  It is used in a
 261 fashion analogous to the environment variable TERM.")
 262
 263 (defvar window-setup-hook nil
 264   "Normal hook run to initialize window system display.
 265 Emacs runs this hook after processing the command line arguments and loading
 266 the user's init file.")
 267
 268 (defcustom initial-major-mode 'lisp-interaction-mode
 269   "Major mode command symbol to use for the initial *scratch* buffer."
 270   :type 'function
 271   :group 'initialization)
 272
 273 (defcustom init-file-user nil
 274   "Identity of user whose `.emacs' file is or was read.
 275 The value is nil if `-q' or `--no-init-file' was specified,
 276 meaning do not load any init file.
 277
 278 Otherwise, the value may be the null string, meaning use the init file
 279 for the user that originally logged in, or it may be a
 280 string containing a user's name meaning use that person's init file.
 281
 282 In either of the latter cases, `(concat \"~\" init-file-user \"/\")'
 283 evaluates to the name of the directory where the `.emacs' file was
 284 looked for.
 285
 286 Setting `init-file-user' does not prevent Emacs from loading
 287 `site-start.el'.  The only way to do that is to use `--no-site-file'."
 288   :type '(choice (const :tag "none" nil) string)
 289   :group 'initialization)
 290
 291 (defcustom site-run-file "site-start"
 292   "File containing site-wide run-time initializations.
 293 This file is loaded at run-time before `~/.emacs'.  It contains inits
 294 that need to be in place for the entire site, but which, due to their
 295 higher incidence of change, don't make sense to load into emacs'
 296 dumped image.  Thus, the run-time load order is: 1. file described in
 297 this variable, if non-nil; 2. `~/.emacs'; 3. `default.el'.
 298
 299 Don't use the `site-start.el' file for things some users may not like.
 300 Put them in `default.el' instead, so that users can more easily
 301 override them.  Users can prevent loading `default.el' with the `-q'
 302 option or by setting `inhibit-default-init' in their own init files,
 303 but inhibiting `site-start.el' requires `--no-site-file', which
 304 is less convenient."
 305   :type '(choice (const :tag "none" nil) string)
 306   :group 'initialization)
 307
 308 (defcustom mail-host-address nil
 309   "*Name of this machine, for purposes of naming users."
 310   :type '(choice (const nil) string)
 311   :group 'mail)
 312
 313 (defcustom user-mail-address nil
 314   "*Full mailing address of this user.
 315 This is initialized based on `mail-host-address',
 316 after your init file is read, in case it sets `mail-host-address'."
 317   :type 'string
 318   :group 'mail)
 319
 320 (defcustom auto-save-list-file-prefix
 321   (cond ((eq system-type 'ms-dos)
 322          ;; MS-DOS cannot have initial dot, and allows only 8.3 names
 323          "~/_emacs.d/auto-save.list/_s")
 324         (t
 325          "~/.emacs.d/auto-save-list/.saves-"))
 326   "Prefix for generating `auto-save-list-file-name'.
 327 This is used after reading your `.emacs' file to initialize
 328 `auto-save-list-file-name', by appending Emacs's pid and the system name,
 329 if you have not already set `auto-save-list-file-name' yourself.
 330 Directories in the prefix will be created if necessary.
 331 Set this to nil if you want to prevent `auto-save-list-file-name'
 332 from being initialized."
 333   :type '(choice (const :tag "Don't record a session's auto save list" nil)
 334                  string)
 335   :group 'auto-save)
 336
 337 (defvar init-file-debug nil)
 338
 339 (defvar init-file-had-error nil)
 340
 341 (defvar normal-top-level-add-subdirs-inode-list nil)
 342
 343 (defun normal-top-level-add-subdirs-to-load-path ()
 344   "Add all subdirectories of current directory to `load-path'.
 345 More precisely, this uses only the subdirectories whose names
 346 start with letters or digits; it excludes any subdirectory named `RCS'
 347 or `CVS', and any subdirectory that contains a file named `.nosearch'."
 348   (let (dirs
 349         attrs
 350         (pending (list default-directory)))
 351     ;; This loop does a breadth-first tree walk on DIR's subtree,
 352     ;; putting each subdir into DIRS as its contents are examined.
 353     (while pending
 354       (setq dirs (cons (car pending) dirs))
 355       (setq pending (cdr pending))
 356       (setq attrs (nthcdr 10 (file-attributes (car dirs))))
 357       (let ((contents (directory-files (car dirs)))
 358             (default-directory (car dirs)))
 359         (unless (member attrs normal-top-level-add-subdirs-inode-list)
 360           (setq normal-top-level-add-subdirs-inode-list
 361                 (cons attrs normal-top-level-add-subdirs-inode-list))
 362           (while contents
 363             ;; The lower-case variants of RCS and CVS are for DOS/Windows.
 364             (unless (member (car contents) '("." ".." "RCS" "CVS" "rcs" "cvs"))
 365               (when (and (string-match "\\`[[:alnum:]]" (car contents))
 366                          ;; Avoid doing a `stat' when it isn't necessary
 367                          ;; because that can cause trouble when an NFS server
 368                          ;; is down.
 369                          (not (string-match "\\.elc?\\'" (car contents)))
 370                          (file-directory-p (car contents)))
 371                 (let ((expanded (expand-file-name (car contents))))
 372                   (unless (file-exists-p (expand-file-name ".nosearch"
 373                                                            expanded))
 374                     (setq pending (nconc pending (list expanded)))))))
 375             (setq contents (cdr contents))))))
 376     (normal-top-level-add-to-load-path (cdr (nreverse dirs)))))
 377
 378 ;; This function is called from a subdirs.el file.
 379 ;; It assumes that default-directory is the directory
 380 ;; in which the subdirs.el file exists,
 381 ;; and it adds to load-path the subdirs of that directory
 382 ;; as specified in DIRS.  Normally the elements of DIRS are relative.
 383 (defun normal-top-level-add-to-load-path (dirs)
 384   (let ((tail load-path)
 385         (thisdir (directory-file-name default-directory)))
 386     (while (and tail
 387                 ;;Don't go all the way to the nil terminator.
 388                 (cdr tail)
 389                 (not (equal thisdir (car tail)))
 390                 (not (and (memq system-type '(ms-dos windows-nt))
 391                           (equal (downcase thisdir) (downcase (car tail))))))
 392       (setq tail (cdr tail)))
 393     ;;Splice the new section in.
 394     (when tail
 395       (setcdr tail (append (mapcar 'expand-file-name dirs) (cdr tail))))))
 396
 397 (defun normal-top-level ()
 398   (if command-line-processed
 399       (message "Back to top level.")
 400     (setq command-line-processed t)
 401     ;; Give *Messages* the same default-directory as *scratch*,
 402     ;; just to keep things predictable.
 403     (let ((dir default-directory))
 404       (save-excursion
 405         (set-buffer (get-buffer "*Messages*"))
 406         (setq default-directory dir)))
 407     ;; For root, preserve owner and group when editing files.
 408     (if (equal (user-uid) 0)
 409         (setq backup-by-copying-when-mismatch t))
 410     ;; Look in each dir in load-path for a subdirs.el file.
 411     ;; If we find one, load it, which will add the appropriate subdirs
 412     ;; of that dir into load-path,
 413     ;; Look for a leim-list.el file too.  Loading it will register
 414     ;; available input methods.
 415     (let ((tail load-path)
 416           new)
 417       (while tail
 418         (setq new (cons (car tail) new))
 419         (condition-case nil
 420             (let ((default-directory (car tail)))
 421               (load (expand-file-name "subdirs.el" (car tail)) t t t)))
 422         (condition-case nil
 423             (let ((default-directory (car tail)))
 424               (load (expand-file-name "leim-list.el" (car tail)) t t t)))
 425         (setq tail (cdr tail))))
 426     (if (not (eq system-type 'vax-vms))
 427         (progn
 428           ;; If the PWD environment variable isn't accurate, delete it.
 429           (let ((pwd (getenv "PWD")))
 430             (and (stringp pwd)
 431                  ;; Use FOO/., so that if FOO is a symlink, file-attributes
 432                  ;; describes the directory linked to, not FOO itself.
 433                  (or (equal (file-attributes
 434                              (concat (file-name-as-directory pwd) "."))
 435                             (file-attributes
 436                              (concat (file-name-as-directory default-directory)
 437                                      ".")))
 438                      (setq process-environment
 439                            (delete (concat "PWD=" pwd)
 440                                    process-environment)))))))
 441     (setq default-directory (abbreviate-file-name default-directory))
 442     (let ((menubar-bindings-done nil))
 443       (unwind-protect
 444           (command-line)
 445         ;; Do this again, in case .emacs defined more abbreviations.
 446         (setq default-directory (abbreviate-file-name default-directory))
 447         ;; Specify the file for recording all the auto save files of this session.
 448         ;; This is used by recover-session.
 449         (or auto-save-list-file-name
 450             (and auto-save-list-file-prefix
 451                  (setq auto-save-list-file-name
 452                        ;; Under MS-DOS our PID is almost always reused between
 453                        ;; Emacs invocations.  We need something more unique.
 454                        (cond ((eq system-type 'ms-dos)
 455                               ;; We are going to access the auto-save
 456                               ;; directory, so make sure it exists.
 457                               (make-directory
 458                                (file-name-directory auto-save-list-file-prefix)
 459                                t)
 460                               (concat
 461                                (make-temp-name
 462                                 (expand-file-name
 463                                  auto-save-list-file-prefix))
 464                                "~"))
 465                              (t
 466                               (expand-file-name
 467                                (format "%s%d-%s~"
 468                                        auto-save-list-file-prefix
 469                                        (emacs-pid)
 470                                        (system-name))))))))
 471         (run-hooks 'emacs-startup-hook)
 472         (and term-setup-hook
 473              (run-hooks 'term-setup-hook))
 474         ;; Modify the initial frame based on what .emacs puts into
 475         ;; ...-frame-alist.
 476         (if (fboundp 'frame-notice-user-settings)
 477             (frame-notice-user-settings))
 478         (if (fboundp 'frame-set-background-mode)
 479             ;; Set the faces for the initial background mode even if
 480             ;; frame-notice-user-settings didn't (such as on a tty).
 481             ;; frame-set-background-mode is idempotent, so it won't
 482             ;; cause any harm if it's already been done.
 483             (let ((frame-background-mode frame-background-mode)
 484                   (frame (selected-frame))
 485                   term)
 486               (when (and (null window-system)
 487                          ;; Don't override a possibly customized value.
 488                          (null frame-background-mode)
 489                          ;; Don't override user specifications.
 490                          (null (frame-parameter frame 'reverse))
 491                          (let ((bg (frame-parameter frame 'background-color)))
 492                            (or (null bg)
 493                                (member bg '(unspecified "unspecified-bg")))))
 494                 (setq term (getenv "TERM"))
 495                 (if (string-match "^\\(xterm\\|rxvt\\|dtterm\\|eterm\\)"
 496                                   term)
 497                     (setq frame-background-mode 'light)))
 498               (frame-set-background-mode (selected-frame))))
 499
 500         ;; Now we know the user's default font, so add it to the menu.
 501         (if (fboundp 'font-menu-add-default)
 502             (font-menu-add-default))
 503         (and window-setup-hook
 504              (run-hooks 'window-setup-hook))
 505         (or menubar-bindings-done
 506             (if (display-popup-menus-p)
 507                 (precompute-menubar-bindings)))))))
 508
 509 ;; Precompute the keyboard equivalents in the menu bar items.
 510 (defun precompute-menubar-bindings ()
 511   (let ((submap (lookup-key global-map [menu-bar])))
 512     (while submap
 513       (and (consp (car submap))
 514            (symbolp (car (car submap)))
 515            (stringp (car-safe (cdr (car submap))))
 516            (keymapp (cdr (cdr (car submap))))
 517            (progn
 518              (x-popup-menu nil (cdr (cdr (car submap))))
 519              (if purify-flag
 520                  (garbage-collect))))
 521       (setq submap (cdr submap))))
 522     (setq define-key-rebound-commands t))
 523
 524 ;; Command-line options supported by tty's:
 525 (defconst tty-long-option-alist
 526   '(("--name" .         "-name")
 527     ("--title" .        "-T")
 528     ("--reverse-video" . "-reverse")
 529     ("--foreground-color" . "-fg")
 530     ("--background-color" . "-bg")))
 531
 532 ;; Handle the X-like command line parameters "-fg", "-bg", "-name", etc.
 533 (defun tty-handle-args (args)
 534   (let ((rest nil))
 535     (message "%s" args)
 536     (while (and args
 537                 (not (equal (car args) "--")))
 538       (let* ((this (car args))
 539              (orig-this this)
 540              completion argval)
 541         (setq args (cdr args))
 542         ;; Check for long options with attached arguments
 543         ;; and separate out the attached option argument into argval.
 544         (if (string-match "^--[^=]*=" this)
 545             (setq argval (substring this (match-end 0))
 546                   this (substring this 0 (1- (match-end 0)))))
 547         (when (string-match "^--" this)
 548           (setq completion (try-completion this tty-long-option-alist))
 549           (if (eq completion t)
 550               ;; Exact match for long option.
 551               (setq this (cdr (assoc this tty-long-option-alist)))
 552             (if (stringp completion)
 553                 (let ((elt (assoc completion tty-long-option-alist)))
 554                   ;; Check for abbreviated long option.
 555                   (or elt
 556                       (error "Option `%s' is ambiguous" this))
 557                   (setq this (cdr elt)))
 558               ;; Check for a short option.
 559               (setq argval nil this orig-this))))
 560         (cond ((or (string= this "-fg") (string= this "-foreground"))
 561                (or argval (setq argval (car args) args (cdr args)))
 562                (setq default-frame-alist
 563                      (cons (cons 'foreground-color argval)
 564                            default-frame-alist)))
 565               ((or (string= this "-bg") (string= this "-background"))
 566                (or argval (setq argval (car args) args (cdr args)))
 567                (setq default-frame-alist
 568                      (cons (cons 'background-color argval)
 569                            default-frame-alist)))
 570               ((or (string= this "-T") (string= this "-name"))
 571                (or argval (setq argval (car args) args (cdr args)))
 572                (setq default-frame-alist
 573                      (cons
 574                       (cons 'title
 575                             (if (stringp argval)
 576                                 argval
 577                               (let ((case-fold-search t)
 578                                     i)
 579                                 (setq argval (invocation-name))
 580
 581                                 ;; Change any . or * characters in name to
 582                                 ;; hyphens, so as to emulate behavior on X.
 583                                 (while
 584                                     (setq i (string-match "[.*]" argval))
 585                                   (aset argval i ?-))
 586                                 argval)))
 587                       default-frame-alist)))
 588               ((or (string= this "-r")
 589                    (string= this "-rv")
 590                    (string= this "-reverse"))
 591                (setq default-frame-alist
 592                      (cons '(reverse . t)
 593                            default-frame-alist)))
 594               (t (setq rest (cons this rest))))))
 595       (nreverse rest)))
 596
 597 (defun command-line ()
 598   (setq command-line-default-directory default-directory)
 599
 600   ;; Choose a reasonable location for temporary files.
 601   (setq temporary-file-directory
 602         (file-name-as-directory
 603          (cond ((memq system-type '(ms-dos windows-nt))
 604                 (or (getenv "TEMP") (getenv "TMPDIR") (getenv "TMP") "c:/temp"))
 605                ((memq system-type '(vax-vms axp-vms))
 606                 (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "SYS$SCRATCH:"))
 607                (t
 608                 (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "/tmp")))))
 609   (setq small-temporary-file-directory
 610         (if (eq system-type 'ms-dos)
 611             (getenv "TMPDIR")))
 612
 613   ;; See if we should import version-control from the environment variable.
 614   (let ((vc (getenv "VERSION_CONTROL")))
 615     (cond ((eq vc nil))                 ;don't do anything if not set
 616           ((or (string= vc "t")
 617                (string= vc "numbered"))
 618            (setq version-control t))
 619           ((or (string= vc "nil")
 620                (string= vc "existing"))
 621            (setq version-control nil))
 622           ((or (string= vc "never")
 623                (string= vc "simple"))
 624            (setq version-control 'never))))
 625
 626   ;;! This has been commented out; I currently find the behavior when
 627   ;;! split-window-keep-point is nil disturbing, but if I can get used
 628   ;;! to it, then it would be better to eliminate the option.
 629   ;;! ;; Choose a good default value for split-window-keep-point.
 630   ;;! (setq split-window-keep-point (> baud-rate 2400))
 631
 632   ;; Set the default strings to display in mode line for
 633   ;; end-of-line formats that aren't native to this platform.
 634   (cond
 635    ((memq system-type '(ms-dos windows-nt emx))
 636     (setq eol-mnemonic-unix "(Unix)")
 637     (setq eol-mnemonic-mac  "(Mac)"))
 638    ;; Mac-specific settings should come here, once there's a
 639    ;; system-type symbol specific to MacOS.
 640    (t   ; this is for Unix/GNU/Linux systems
 641     (setq eol-mnemonic-dos  "(DOS)")
 642     (setq eol-mnemonic-mac  "(Mac)")))
 643
 644   ;; Read window system's init file if using a window system.
 645   (condition-case error
 646       (if (and window-system (not noninteractive))
 647           (load (concat term-file-prefix
 648                         (symbol-name window-system)
 649                         "-win")
 650                 ;; Every window system should have a startup file;
 651                 ;; barf if we can't find it.
 652                 nil t))
 653     ;; If we can't read it, print the error message and exit.
 654     (error
 655      (princ
 656       (if (eq (car error) 'error)
 657           (apply 'concat (cdr error))
 658         (if (memq 'file-error (get (car error) 'error-conditions))
 659             (format "%s: %s"
 660                      (nth 1 error)
 661                      (mapconcat (lambda (obj) (prin1-to-string obj t))
 662                                 (cdr (cdr error)) ", "))
 663           (format "%s: %s"
 664                    (get (car error) 'error-message)
 665                    (mapconcat (lambda (obj) (prin1-to-string obj t))
 666                               (cdr error) ", "))))
 667       'external-debugging-output)
 668      (setq window-system nil)
 669      (kill-emacs)))
 670
 671   ;; Windowed displays do this inside their *-win.el.
 672   (when (and (not (display-graphic-p))
 673              (not noninteractive))
 674     (setq command-line-args (tty-handle-args command-line-args)))
 675
 676   (set-locale-environment nil)
 677
 678   (let ((done nil)
 679         (args (cdr command-line-args)))
 680
 681     ;; Figure out which user's init file to load,
 682     ;; either from the environment or from the options.
 683     (setq init-file-user (if noninteractive nil (user-login-name)))
 684     ;; If user has not done su, use current $HOME to find .emacs.
 685     (and init-file-user (string= init-file-user (user-real-login-name))
 686          (setq init-file-user ""))
 687
 688     ;; Process the command-line args, and delete the arguments
 689     ;; processed.  This is consistent with the way main in emacs.c
 690     ;; does things.
 691     (while (and (not done) args)
 692       (let ((longopts '(("--no-init-file") ("--no-site-file") ("--user")
 693                         ("--debug-init") ("--iconic") ("--icon-type")))
 694             (argi (car args))
 695             (argval nil))
 696         ;; Handle --OPTION=VALUE format.
 697         (if (and (string-match "\\`--" argi)
 698                  (string-match "=" argi))
 699             (setq argval (substring argi (match-end 0))
 700                   argi (substring argi 0 (match-beginning 0))))
 701         (or (equal argi "--")
 702             (let ((completion (try-completion argi longopts)))
 703               (if (eq completion t)
 704                   (setq argi (substring argi 1))
 705                 (if (stringp completion)
 706                     (let ((elt (assoc completion longopts)))
 707                       (or elt
 708                           (error "Option `%s' is ambiguous" argi))
 709                       (setq argi (substring (car elt) 1)))
 710                   (setq argval nil)))))
 711         (cond
 712          ((or (string-equal argi "-q")
 713               (string-equal argi "-no-init-file"))
 714           (setq init-file-user nil
 715                 args (cdr args)))
 716          ((or (string-equal argi "-u")
 717               (string-equal argi "-user"))
 718           (or argval
 719               (setq args (cdr args)
 720                     argval (car args)))
 721           (setq init-file-user argval
 722                 argval nil
 723                 args (cdr args)))
 724          ((string-equal argi "-no-site-file")
 725           (setq site-run-file nil
 726                 args (cdr args)))
 727          ((string-equal argi "-debug-init")
 728           (setq init-file-debug t
 729                 args (cdr args)))
 730          ((string-equal argi "-iconic")
 731           (setq initial-frame-alist
 732                 (cons '(visibility . icon) initial-frame-alist))
 733           (setq args (cdr args)))
 734          ((or (string-equal argi "-icon-type")
 735               (string-equal argi "-i")
 736               (string-equal argi "-itype"))
 737           (setq default-frame-alist
 738                 (cons '(icon-type . t) default-frame-alist))
 739           (setq args (cdr args)))
 740          (t (setq done t)))
 741         ;; Was argval set but not used?
 742         (and argval
 743              (error "Option `%s' doesn't allow an argument" argi))))
 744
 745     ;; Re-attach the program name to the front of the arg list.
 746     (and command-line-args (setcdr command-line-args args)))
 747
 748   ;; Under X Windows, this creates the X frame and deletes the terminal frame.
 749   (if (fboundp 'frame-initialize)
 750       (frame-initialize))
 751   ;; If frame was created with a menu bar, set menu-bar-mode on.
 752   (if (and (not noninteractive)
 753            (or (not (memq window-system '(x w32)))
 754                (> (cdr (assq 'menu-bar-lines (frame-parameters))) 0)))
 755       (menu-bar-mode t))
 756
 757   ;; If frame was created with a tool bar, switch tool-bar-mode on.
 758   (when (and (not noninteractive)
 759              (display-graphic-p)
 760              (> (frame-parameter nil 'tool-bar-lines) 0))
 761     (tool-bar-mode t))
 762
 763   ;; Can't do this init in defcustom because window-system isn't set.
 764   (when (and (not noninteractive)
 765              (not (eq system-type 'ms-dos))
 766              (memq window-system '(x w32)))
 767     (setq-default blink-cursor t)
 768     (blink-cursor-mode 1))
 769
 770   (when (and (not noninteractive)
 771              ;; DOS/Windows systems have a PC-type keyboard which has both
 772              ;; <delete> and <backspace> keys.
 773              (or (memq system-type '(ms-dos windows-nt))
 774                  (memq window-system '(x))))
 775     (setq-default delete-key-deletes-forward
 776                   (or (not (fboundp 'x-backspace-delete-keys-p))
 777                       (x-backspace-delete-keys-p)))
 778     (delete-key-deletes-forward-mode 1))
 779
 780   (when (and (not noninteractive)
 781              (display-graphic-p)
 782              (fboundp 'x-show-tip))
 783     (setq-default tooltip-mode t)
 784     (tooltip-mode 1))
 785
 786   ;; Register default TTY colors for the case the terminal hasn't a
 787   ;; terminal init file.
 788   (or (memq window-system '(x w32))
 789       (not (tty-display-color-p))
 790       (let* ((colors (cond ((eq window-system 'pc)
 791                             msdos-color-values)
 792                            ((eq system-type 'windows-nt)
 793                             w32-tty-standard-colors)
 794                            (t tty-standard-colors)))
 795              (color (car colors)))
 796         (while colors
 797           (tty-color-define (car color) (cadr color) (cddr color))
 798           (setq colors (cdr colors) color (car colors)))
 799         ;; Modifying color mappings means realized faces don't
 800         ;; use the right colors, so clear them.
 801         (clear-face-cache)))
 802
 803   (run-hooks 'before-init-hook)
 804
 805   ;; Run the site-start library if it exists.  The point of this file is
 806   ;; that it is run before .emacs.  There is no point in doing this after
 807   ;; .emacs; that is useless.
 808   (if site-run-file
 809       (load site-run-file t t))
 810
 811   ;; Sites should not disable this.  Only individuals should disable
 812   ;; the startup message.
 813   (setq inhibit-startup-message nil)
 814
 815   ;; Load that user's init file, or the default one, or none.
 816   (let (debug-on-error-from-init-file
 817         debug-on-error-should-be-set
 818         (debug-on-error-initial
 819          (if (eq init-file-debug t) 'startup init-file-debug))
 820         (orig-enable-multibyte default-enable-multibyte-characters))
 821     (let ((debug-on-error debug-on-error-initial)
 822           ;; This function actually reads the init files.
 823           (inner
 824            (function
 825             (lambda ()
 826               (if init-file-user
 827                   (let ((user-init-file-1
 828                           (cond
 829                            ((eq system-type 'ms-dos)
 830                             (concat "~" init-file-user "/_emacs"))
 831                            ((eq system-type 'windows-nt)
 832                             (if (directory-files "~" nil "^\\.emacs\\(\\.elc?\\)?$")
 833                                 "~/.emacs"
 834                               "~/_emacs"))
 835                            ((eq system-type 'vax-vms)
 836                             "sys$login:.emacs")
 837                            (t
 838                             (concat "~" init-file-user "/.emacs")))))
 839                     ;; This tells `load' to store the file name found
 840                     ;; into user-init-file.
 841                     (setq user-init-file t)
 842                     (load user-init-file-1 t t)
 843
 844                     ;; If we did not find the user's init file,
 845                     ;; set user-init-file conclusively to nil;
 846                     ;; don't let it be set from default.el.
 847                     (if (eq user-init-file t)
 848                         (setq user-init-file nil))
 849
 850                     ;; If we loaded a compiled file, set
 851                     ;; `user-init-file' to the source version if that
 852                     ;; exists.
 853                     (when (and user-init-file
 854                                (equal (file-name-extension user-init-file)
 855                                       "elc"))
 856                       (let* ((source (file-name-sans-extension user-init-file))
 857                              (alt (concat source ".el")))
 858                         (setq source (cond ((file-exists-p alt) alt)
 859                                            ((file-exists-p source) source)
 860                                            (t nil)))
 861                         (when source
 862                           (when (file-newer-than-file-p source user-init-file)
 863                             (message "Warning: %s is newer than %s"
 864                                      source user-init-file)
 865                             (sit-for 1))
 866                           (setq user-init-file source))))
 867
 868                     (or inhibit-default-init
 869                         (let ((inhibit-startup-message nil))
 870                           ;; Users are supposed to be told their rights.
 871                           ;; (Plus how to get help and how to undo.)
 872                           ;; Don't you dare turn this off for anyone
 873                           ;; except yourself.
 874                           (load "default" t t)))))))))
 875       (if init-file-debug
 876           ;; Do this without a condition-case if the user wants to debug.
 877           (funcall inner)
 878         (condition-case error
 879             (progn
 880               (funcall inner)
 881               (setq init-file-had-error nil))
 882           (error
 883            (let ((message-log-max nil))
 884              (save-excursion
 885                (set-buffer (get-buffer-create "*Messages*"))
 886                (insert "\n\n"
 887                        (format "An error has occurred while loading `%s':\n\n"
 888                                user-init-file)
 889                        (format "%s%s%s"
 890                                (get (car error) 'error-message)
 891                                (if (cdr error) ": " "")
 892                                (mapconcat 'prin1-to-string (cdr error) ", "))
 893                        "\n\n"
 894                        "To ensure normal operation, you should investigate the cause\n"
 895                        "of the error in your initialization file and remove it.  Start\n"
 896                        "Emacs with the `--debug-init' option to view a complete error\n"
 897                        "backtrace\n"))
 898              (message "Error in init file: %s%s%s"
 899                       (get (car error) 'error-message)
 900                       (if (cdr error) ": " "")
 901                       (mapconcat 'prin1-to-string (cdr error) ", "))
 902              (pop-to-buffer "*Messages*")
 903              (setq init-file-had-error t)))))
 904       ;; If we can tell that the init file altered debug-on-error,
 905       ;; arrange to preserve the value that it set up.
 906       (or (eq debug-on-error debug-on-error-initial)
 907           (setq debug-on-error-should-be-set t
 908                 debug-on-error-from-init-file debug-on-error)))
 909     (if debug-on-error-should-be-set
 910         (setq debug-on-error debug-on-error-from-init-file))
 911     (unless (or default-enable-multibyte-characters
 912                 (eq orig-enable-multibyte default-enable-multibyte-characters))
 913       ;; Init file changed to unibyte.  Reset existing multibyte
 914       ;; buffers (probably *scratch*, *Messages*, *Minibuff-0*).
 915       ;; Arguably this should only be done if they're free of
 916       ;; multibyte characters.
 917       (mapcar (lambda (buffer)
 918                 (with-current-buffer buffer
 919                   (if enable-multibyte-characters
 920                       (set-buffer-multibyte nil))))
 921               (buffer-list))
 922       ;; Also re-set the language environment in case it was
 923       ;; originally done before unibyte was set and is sensitive to
 924       ;; unibyte (display table, terminal coding system &c).
 925       (set-language-environment current-language-environment)))
 926
 927   ;; Do this here in case the init file sets mail-host-address.
 928   (or user-mail-address
 929       (setq user-mail-address (concat (user-login-name) "@"
 930                                       (or mail-host-address
 931                                           (system-name)))))
 932
 933   (run-hooks 'after-init-hook)
 934
 935   ;; If *scratch* exists and init file didn't change its mode, initialize it.
 936   (if (get-buffer "*scratch*")
 937       (save-excursion
 938         (set-buffer "*scratch*")
 939         (if (eq major-mode 'fundamental-mode)
 940             (funcall initial-major-mode))))
 941
 942   ;; Load library for our terminal type.
 943   ;; User init file can set term-file-prefix to nil to prevent this.
 944   (and term-file-prefix (not noninteractive) (not window-system)
 945        (let ((term (getenv "TERM"))
 946              hyphend)
 947          (while (and term
 948                      (not (load (concat term-file-prefix term) t t)))
 949            ;; Strip off last hyphen and what follows, then try again
 950            (if (setq hyphend (string-match "[-_][^-_]+$" term))
 951                (setq term (substring term 0 hyphend))
 952              (setq term nil)))))
 953
 954   ;; Process the remaining args.
 955   (command-line-1 (cdr command-line-args))
 956
 957   ;; If -batch, terminate after processing the command options.
 958   (if noninteractive (kill-emacs t)))
 959
 960 (defcustom initial-scratch-message (purecopy "\
 961 ;; This buffer is for notes you don't want to save, and for Lisp evaluation.
 962 ;; If you want to create a file, visit that file with C-x C-f,
 963 ;; then enter the text in that file's own buffer.
 964
 965 ")
 966   "Initial message displayed in *scratch* buffer at startup.
 967 If this is nil, no message will be displayed."
 968   :type 'string)
 969
 970 \f
 971 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 972 ;;; Fancy splash screen
 973 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 974
 975 (defvar fancy-splash-text
 976   '((:face variable-pitch
 977            "You can do basic editing with the menu bar and scroll bar \
 978 using the mouse.\n\n"
 979            :face (variable-pitch :weight bold)
 980            "Useful File menu items:\n"
 981            :face variable-pitch "\
 982 Exit Emacs\t(or type Control-x followed by Control-c)
 983 Recover Session\trecover files you were editing before a crash
 984
 985
 986 "
 987            )
 988   (:face variable-pitch
 989            "You can do basic editing with the menu bar and scroll bar \
 990 using the mouse.\n\n"
 991            :face (variable-pitch :weight bold)
 992            "Important Help menu items:\n"
 993            :face variable-pitch "\
 994 Emacs Tutorial\tLearn-by-doing tutorial for using Emacs efficiently.
 995 Emacs FAQ\tFrequently asked questions and answers
 996 \(Non)Warranty\tGNU Emacs comes with "
 997            :face (variable-pitch :slant oblique)
 998            "ABSOLUTELY NO WARRANTY\n"
 999            :face variable-pitch
1000            "\
1001 Copying Conditions\tConditions for redistributing and changing Emacs\n"))
1002   "A list of texts to show in the middle part of splash screens.
1003 Each element in the list should be a list of strings or pairs
1004 `:face FACE', like `fancy-splash-insert' accepts them.")
1005
1006
1007 (defgroup fancy-splash-screen ()
1008   "Fancy splash screen when Emacs starts."
1009   :version "21.1"
1010   :group 'initialization)
1011
1012
1013 (defcustom fancy-splash-delay 10
1014   "*Delay in seconds between splash screens."
1015   :group 'fancy-splash-screen
1016   :type 'integer)
1017
1018
1019 (defcustom fancy-splash-max-time 60
1020   "*Show splash screens for at most this number of seconds.
1021 Values less than 60 seconds are ignored."
1022   :group 'fancy-splash-screen
1023   :type 'integer)
1024
1025
1026 (defcustom fancy-splash-image nil
1027   "*The image to show in the splash screens, or nil for defaults."
1028   :group 'fancy-splash-screen
1029   :type '(choice (const :tag "Default" nil)
1030                  (file :tag "File")))
1031
1032
1033 ;; These are temporary storage areas for the splash screen display.
1034
1035 (defvar fancy-current-text nil)
1036 (defvar fancy-splash-help-echo nil)
1037 (defvar fancy-splash-stop-time nil)
1038
1039
1040 (defun fancy-splash-insert (&rest args)
1041   "Insert text into the current buffer, with faces.
1042 Arguments from ARGS should be either strings or pairs `:face FACE',
1043 where FACE is a valid face specification, as it can be used with
1044 `put-text-properties'."
1045   (let ((current-face nil))
1046     (while args
1047       (if (eq (car args) :face)
1048           (setq args (cdr args) current-face (car args))
1049         (insert (propertize (car args)
1050                             'face current-face
1051                             'help-echo fancy-splash-help-echo)))
1052       (setq args (cdr args)))))
1053
1054
1055 (defun fancy-splash-head ()
1056   "Insert the head part of the splash screen into the current buffer."
1057   (let* ((img (create-image (or fancy-splash-image
1058                                 (if (and (display-color-p)
1059                                          (image-type-available-p 'xpm))
1060                                     "splash.xpm" "splash.pbm"))))
1061          (image-width (and img (car (image-size img))))
1062          (window-width (window-width (selected-window))))
1063     (when img
1064       (when (> window-width image-width)
1065         ;; Center the image in the window.
1066         (let ((pos (/ (- window-width image-width) 2)))
1067           (insert (propertize " " 'display `(space :align-to ,pos))))
1068
1069         ;; Change the color of the XPM version of the splash image
1070         ;; so that it is visible with a dark frame background.
1071         (when (and (memq 'xpm img)
1072                    (eq (frame-parameter nil 'background-mode) 'dark))
1073           (setq img (append img '(:color-symbols (("#000000" . "gray"))))))
1074
1075         ;; Insert the image with a help-echo and a keymap.
1076         (let ((map (make-sparse-keymap))
1077               (help-echo "mouse-2: browse http://www.gnu.org/"))
1078           (define-key map [mouse-2]
1079             (lambda ()
1080               (interactive)
1081               (browse-url "http://www.gnu.org/")
1082               (throw 'exit nil)))
1083           (define-key map [down-mouse-2] 'ignore)
1084           (define-key map [up-mouse-2] 'ignore)
1085           (insert-image img (propertize "xxx" 'help-echo help-echo
1086                                         'keymap map)))
1087         (insert "\n"))))
1088   (if (eq system-type 'gnu/linux)
1089       (fancy-splash-insert
1090        :face '(variable-pitch :foreground "red")
1091        "GNU Emacs is one component of a Linux-based GNU system.")
1092     (fancy-splash-insert
1093      :face '(variable-pitch :foreground "red")
1094      "GNU Emacs is one component of the GNU operating system."))
1095   (insert "\n"))
1096
1097
1098 (defun fancy-splash-tail ()
1099   "Insert the tail part of the splash screen into the current buffer."
1100   (let ((fg (if (eq (frame-parameter nil 'background-mode) 'dark)
1101                 "cyan" "darkblue")))
1102     (fancy-splash-insert :face `(variable-pitch :foreground ,fg)
1103                          "\nThis is "
1104                          (emacs-version)
1105                          "\n"
1106                          :face '(variable-pitch :height 0.5)
1107                          "Copyright (C) 2000 Free Software Foundation, Inc.")))
1108
1109
1110 (defun fancy-splash-screens-1 (buffer)
1111   "Timer function displaying a splash screen."
1112   (when (> (float-time) fancy-splash-stop-time)
1113     (throw 'stop-splashing nil))
1114   (unless fancy-current-text
1115     (setq fancy-current-text fancy-splash-text))
1116   (let ((text (car fancy-current-text)))
1117     (set-buffer buffer)
1118     (erase-buffer)
1119     (fancy-splash-head)
1120     (apply #'fancy-splash-insert text)
1121     (fancy-splash-tail)
1122     (unless (current-message)
1123       (message fancy-splash-help-echo))
1124     (set-buffer-modified-p nil)
1125     (goto-char (point-min))
1126     (force-mode-line-update)
1127     (setq fancy-current-text (cdr fancy-current-text))))
1128
1129
1130 (defun fancy-splash-default-action ()
1131   "Default action for events in the splash screen buffer."
1132   (interactive)
1133   (push last-command-event unread-command-events)
1134   (throw 'exit nil))
1135
1136
1137 (defun fancy-splash-screens ()
1138   "Display fancy splash screens when Emacs starts."
1139   (setq fancy-splash-help-echo (startup-echo-area-message))
1140   (switch-to-buffer "GNU Emacs")
1141   (setq tab-width 20)
1142   (let ((old-busy-cursor display-busy-cursor)
1143         (splash-buffer (current-buffer))
1144         timer)
1145     (catch 'stop-splashing
1146       (unwind-protect
1147           (let ((map (make-sparse-keymap)))
1148             (use-local-map map)
1149             (define-key map [t] 'fancy-splash-default-action)
1150             (define-key map [mouse-movement] 'ignore)
1151             (setq cursor-type nil
1152                   display-busy-cursor nil
1153                   buffer-undo-list t
1154                   mode-line-format
1155                   (propertize "---- %b %-" 'face '(:weight bold))
1156                   fancy-splash-stop-time (+ (float-time)
1157                                             (max 60 fancy-splash-max-time))
1158                   timer (run-with-timer 0 fancy-splash-delay
1159                                         #'fancy-splash-screens-1
1160                                         splash-buffer))
1161             (recursive-edit))
1162           (cancel-timer timer)
1163           (setq display-busy-cursor old-busy-cursor)
1164           (kill-buffer splash-buffer)))))
1165
1166
1167 (defun use-fancy-splash-screens-p ()
1168   "Return t if fancy splash screens should be used."
1169   (when (or (and (display-color-p)
1170                  (image-type-available-p 'xpm))
1171             (image-type-available-p 'pbm))
1172     (let* ((img (create-image (or fancy-splash-image
1173                                   (if (and (display-color-p)
1174                                            (image-type-available-p 'xpm))
1175                                       "splash.xpm" "splash.pbm"))))
1176            (image-height (and img (cdr (image-size img))))
1177            (window-height (1- (window-height (selected-window)))))
1178       (> window-height (+ image-height 14)))))
1179
1180
1181 (defun startup-echo-area-message ()
1182   (if (eq (key-binding "\C-h\C-p") 'describe-project)
1183       "For information about the GNU Project and its goals, type C-h C-p."
1184     (substitute-command-keys
1185      "For information about the GNU Project and its goals, type \
1186 \\[describe-project].")))
1187
1188
1189 (defun display-startup-echo-area-message ()
1190   (message (startup-echo-area-message)))
1191
1192
1193 (defun command-line-1 (command-line-args-left)
1194   (or noninteractive (input-pending-p) init-file-had-error
1195         (and inhibit-startup-echo-area-message
1196              user-init-file
1197              (or (and (get 'inhibit-startup-echo-area-message 'saved-value)
1198                       (equal inhibit-startup-echo-area-message
1199                              (if (string= init-file-user "")
1200                                  (user-login-name)
1201                                init-file-user)))
1202                  ;; Wasn't set with custom; see if .emacs has a setq.
1203                  (let ((buffer (get-buffer-create " *temp*")))
1204                    (prog1
1205                        (condition-case nil
1206                            (save-excursion
1207                              (set-buffer buffer)
1208                              (insert-file-contents user-init-file)
1209                              (re-search-forward
1210                               (concat
1211                                "([ \t\n]*setq[ \t\n]+"
1212                                "inhibit-startup-echo-area-message[ \t\n]+"
1213                                (regexp-quote
1214                                 (prin1-to-string
1215                                  (if (string= init-file-user "")
1216                                      (user-login-name)
1217                                    init-file-user)))
1218                                "[ \t\n]*)")
1219                               nil t))
1220                          (error nil))
1221                      (kill-buffer buffer)))))
1222         (display-startup-echo-area-message))
1223   (if (null command-line-args-left)
1224       (cond ((and (not inhibit-startup-message) (not noninteractive)
1225                   ;; Don't clobber a non-scratch buffer if init file
1226                   ;; has selected it.
1227                   (string= (buffer-name) "*scratch*"))
1228              ;; If there are no switches to process, we might as well
1229              ;; run this hook now, and there may be some need to do it
1230              ;; before doing any output.
1231              (and term-setup-hook
1232                   (run-hooks 'term-setup-hook))
1233              ;; Don't let the hook be run twice.
1234              (setq term-setup-hook nil)
1235
1236              ;; It's important to notice the user settings before we
1237              ;; display the startup message; otherwise, the settings
1238              ;; won't take effect until the user gives the first
1239              ;; keystroke, and that's distracting.
1240              (when (fboundp 'frame-notice-user-settings)
1241                (frame-notice-user-settings))
1242
1243              (when window-setup-hook
1244                (run-hooks 'window-setup-hook)
1245                (setq window-setup-hook nil))
1246
1247              (when (display-popup-menus-p)
1248                (precompute-menubar-bindings))
1249              (setq menubar-bindings-done t)
1250
1251              ;; Do this now to avoid an annoying delay if the user
1252              ;; clicks the menu bar during the sit-for.
1253              (when (= (buffer-size) 0)
1254                (let ((buffer-undo-list t)
1255                      (wait-for-input t))
1256                  (unwind-protect
1257                      (when (not (input-pending-p))
1258                        (goto-char (point-max))
1259                        ;; The convention for this piece of code is that
1260                        ;; each piece of output starts with one or two newlines
1261                        ;; and does not end with any newlines.
1262                        (insert "Welcome to GNU Emacs")
1263                        (if (eq system-type 'gnu/linux)
1264                            (insert ", one component of a Linux-based GNU system."))
1265                        (insert "\n")
1266
1267                        (if (assq 'display (frame-parameters))
1268
1269                            (if (use-fancy-splash-screens-p)
1270                                (progn
1271                                  (setq wait-for-input nil)
1272                                  (fancy-splash-screens))
1273                              (progn
1274                                (insert "\
1275 You can do basic editing with the menu bar and scroll bar using the mouse.
1276
1277 Useful File menu items:
1278 Exit Emacs              (or type Control-x followed by Control-c)
1279 Recover Session         recover files you were editing before a crash
1280
1281 Important Help menu items:
1282 Emacs Tutorial          Learn-by-doing tutorial for using Emacs efficiently.
1283 Emacs FAQ               Frequently asked questions and answers
1284 \(Non)Warranty          GNU Emacs comes with ABSOLUTELY NO WARRANTY
1285 Copying Conditions      Conditions for redistributing and changing Emacs.
1286 Getting New Versions    How to obtain the latest version of Emacs.
1287 ")
1288                                (insert "\n\n" (emacs-version)
1289                                        "
1290 Copyright (C) 2000 Free Software Foundation, Inc.")))
1291
1292                          ;; If keys have their default meanings,
1293                          ;; use precomputed string to save lots of time.
1294                          (if (and (eq (key-binding "\C-h") 'help-command)
1295                                   (eq (key-binding "\C-xu") 'advertised-undo)
1296                                   (eq (key-binding "\C-x\C-c") 'save-buffers-kill-emacs)
1297                                   (eq (key-binding "\C-ht") 'help-with-tutorial)
1298                                   (eq (key-binding "\C-hi") 'info)
1299                                   (eq (key-binding "\C-h\C-n") 'view-emacs-news))
1300                              (insert "
1301 Get help           C-h  (Hold down CTRL and press h)
1302 Undo changes       C-x u       Exit Emacs               C-x C-c
1303 Get a tutorial     C-h t       Use Info to read docs    C-h i")
1304                            (insert (substitute-command-keys
1305                                     (format "\n
1306 Get help           %s
1307 Undo changes       \\[advertised-undo]
1308 Exit Emacs         \\[save-buffers-kill-emacs]
1309 Get a tutorial     \\[help-with-tutorial]
1310 Use Info to read docs   \\[info]"
1311                                             (let ((where (where-is-internal
1312                                                           'help-command nil t)))
1313                                               (if where
1314                                                   (key-description where)
1315                                                 "M-x help"))))))
1316                          ;; Say how to use the menu bar
1317                          ;; if that is not with the mouse.
1318                          (if (and (eq (key-binding "\M-`") 'tmm-menubar)
1319                                   (eq (key-binding [f10]) 'tmm-menubar))
1320                              (insert "
1321 Activate menubar   F10  or  ESC `  or   M-`")
1322                            (insert (substitute-command-keys "
1323 Activate menubar     \\[tmm-menubar]")))
1324
1325                          (if (display-mouse-p)
1326                              (insert "
1327 Mode-specific menu   C-mouse-3 (third button, with CTRL)"))
1328                          ;; Many users seem to have problems with these.
1329                          (insert "
1330 \(`C-' means use the CTRL key.  `M-' means use the Meta (or Alt) key.
1331 If you have no Meta key, you may instead type ESC followed by the character.)")
1332                          (and auto-save-list-file-prefix
1333                               ;; Don't signal an error if the
1334                               ;; directory for auto-save-list files
1335                               ;; does not yet exist.
1336                               (file-directory-p (file-name-directory
1337                                                  auto-save-list-file-prefix))
1338                               (directory-files
1339                                (file-name-directory auto-save-list-file-prefix)
1340                                nil
1341                                (concat "\\`"
1342                                        (regexp-quote (file-name-nondirectory
1343                                                       auto-save-list-file-prefix)))
1344                                t)
1345                               (insert "\n\nIf an Emacs session crashed recently, "
1346                                       "type M-x recover-session RET\nto recover"
1347                                       " the files you were editing."))
1348
1349                          (insert "\n\n" (emacs-version)
1350                                  "
1351 Copyright (C) 2000 Free Software Foundation, Inc.")
1352                          (if (and (eq (key-binding "\C-h\C-c") 'describe-copying)
1353                                   (eq (key-binding "\C-h\C-d") 'describe-distribution)
1354                                   (eq (key-binding "\C-h\C-w") 'describe-no-warranty))
1355                              (insert
1356                               "\n
1357 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type C-h C-w for full details.
1358 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
1359 of Emacs and modify it; type C-h C-c to see the conditions.
1360 Type C-h C-d for information on getting the latest version.")
1361                            (insert (substitute-command-keys
1362                                     "\n
1363 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type \\[describe-no-warranty] for full details.
1364 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
1365 of Emacs and modify it; type \\[describe-copying] to see the conditions.
1366 Type \\[describe-distribution] for information on getting the latest version."))))
1367                        (goto-char (point-min))
1368
1369                        (set-buffer-modified-p nil)
1370                        (when wait-for-input
1371                          (sit-for 120)))
1372
1373                    (with-current-buffer (get-buffer "*scratch*")
1374                      (erase-buffer)
1375                      (when initial-scratch-message
1376                        (insert initial-scratch-message))
1377                      (set-buffer-modified-p nil)))))))
1378
1379     ;; Delay 2 seconds after the init file error message
1380     ;; was displayed, so user can read it.
1381     (if init-file-had-error
1382         (sit-for 2))
1383     (let ((dir command-line-default-directory)
1384           (file-count 0)
1385           first-file-buffer
1386           tem
1387           just-files;; t if this follows the magic -- option.
1388           ;; This includes our standard options' long versions
1389           ;; and long versions of what's on command-switch-alist.
1390           (longopts
1391            (append '(("--funcall") ("--load") ("--insert") ("--kill")
1392                      ("--directory") ("--eval") ("--execute")
1393                      ("--find-file") ("--visit") ("--file"))
1394                    (mapcar (lambda (elt)
1395                              (list (concat "-" (car elt))))
1396                            command-switch-alist)))
1397           (line 0))
1398
1399       ;; Add the long X options to longopts.
1400       (setq tem command-line-x-option-alist)
1401       (while tem
1402         (if (string-match "^--" (car (car tem)))
1403             (setq longopts (cons (list (car (car tem))) longopts)))
1404         (setq tem (cdr tem)))
1405
1406       ;; Loop, processing options.
1407       (while (and command-line-args-left)
1408         (let* ((argi (car command-line-args-left))
1409                (orig-argi argi)
1410                argval completion
1411                ;; List of directories specified in -L/--directory,
1412                ;; in reverse of the order specified.
1413                extra-load-path
1414                (initial-load-path load-path))
1415           (setq command-line-args-left (cdr command-line-args-left))
1416
1417           ;; Do preliminary decoding of the option.
1418           (if just-files
1419               ;; After --, don't look for options; treat all args as files.
1420               (setq argi "")
1421             ;; Convert long options to ordinary options
1422             ;; and separate out an attached option argument into argval.
1423             (if (string-match "^--[^=]*=" argi)
1424                 (setq argval (substring argi (match-end 0))
1425                       argi (substring argi 0 (1- (match-end 0)))))
1426             (if (equal argi "--")
1427                 (setq completion nil)
1428               (setq completion (try-completion argi longopts)))
1429             (if (eq completion t)
1430                 (setq argi (substring argi 1))
1431               (if (stringp completion)
1432                   (let ((elt (assoc completion longopts)))
1433                     (or elt
1434                         (error "Option `%s' is ambiguous" argi))
1435                     (setq argi (substring (car elt) 1)))
1436                 (setq argval nil argi orig-argi))))
1437
1438           ;; Execute the option.
1439           (cond ((setq tem (assoc argi command-switch-alist))
1440                  (if argval
1441                      (let ((command-line-args-left
1442                             (cons argval command-line-args-left)))
1443                        (funcall (cdr tem) argi))
1444                    (funcall (cdr tem) argi)))
1445
1446                 ((or (string-equal argi "-f") ;what the manual claims
1447                      (string-equal argi "-funcall")
1448                      (string-equal argi "-e")) ; what the source used to say
1449                  (if argval
1450                      (setq tem (intern argval))
1451                    (setq tem (intern (car command-line-args-left)))
1452                    (setq command-line-args-left (cdr command-line-args-left)))
1453                  (if (arrayp (symbol-function tem))
1454                      (command-execute tem)
1455                    (funcall tem)))
1456
1457                 ((or (string-equal argi "-eval")
1458                      (string-equal argi "-execute"))
1459                  (if argval
1460                      (setq tem argval)
1461                    (setq tem (car command-line-args-left))
1462                    (setq command-line-args-left (cdr command-line-args-left)))
1463                  (eval (read tem)))
1464                 ;; Set the default directory as specified in -L.
1465
1466                 ((or (string-equal argi "-L")
1467                      (string-equal argi "-directory"))
1468                  (if argval
1469                      (setq tem argval)
1470                    (setq tem (car command-line-args-left)
1471                          command-line-args-left (cdr command-line-args-left)))
1472                  (setq tem (command-line-normalize-file-name tem))
1473                  (setq extra-load-path
1474                        (cons (expand-file-name tem) extra-load-path))
1475                  (setq load-path (append (nreverse extra-load-path)
1476                                          initial-load-path)))
1477
1478                 ((or (string-equal argi "-l")
1479                      (string-equal argi "-load"))
1480                  (if argval
1481                      (setq tem argval)
1482                    (setq tem (car command-line-args-left)
1483                          command-line-args-left (cdr command-line-args-left)))
1484                  (let ((file (command-line-normalize-file-name tem)))
1485                    ;; Take file from default dir if it exists there;
1486                    ;; otherwise let `load' search for it.
1487                    (if (file-exists-p (expand-file-name file))
1488                        (setq file (expand-file-name file)))
1489                    (load file nil t)))
1490
1491                 ((string-equal argi "-insert")
1492                  (if argval
1493                      (setq tem argval)
1494                    (setq tem (car command-line-args-left)
1495                          command-line-args-left (cdr command-line-args-left)))
1496                  (or (stringp tem)
1497                      (error "File name omitted from `-insert' option"))
1498                  (insert-file-contents (command-line-normalize-file-name tem)))
1499
1500                 ((string-equal argi "-kill")
1501                  (kill-emacs t))
1502
1503                 ((string-match "^\\+[0-9]+\\'" argi)
1504                  (setq line (string-to-int argi)))
1505
1506                 ((setq tem (assoc argi command-line-x-option-alist))
1507                  ;; Ignore X-windows options and their args if not using X.
1508                  (setq command-line-args-left
1509                        (nthcdr (nth 1 tem) command-line-args-left)))
1510
1511                 ((or (string-equal argi "-find-file")
1512                      (string-equal argi "-file")
1513                      (string-equal argi "-visit"))
1514                  ;; An explicit option to specify visiting a file.
1515                  (if argval
1516                      (setq tem argval)
1517                    (setq tem (car command-line-args-left)
1518                          command-line-args-left (cdr command-line-args-left)))
1519                  (unless (stringp tem)
1520                    (error "File name omitted from `%s' option" argi))
1521                  (setq file-count (1+ file-count))
1522                  (let ((file (expand-file-name
1523                               (command-line-normalize-file-name tem) dir)))
1524                    (if (= file-count 1)
1525                        (setq first-file-buffer (find-file file))
1526                      (find-file-other-window file)))
1527                  (or (zerop line)
1528                      (goto-line line))
1529                  (setq line 0))
1530
1531                 ((equal argi "--")
1532                  (setq just-files t))
1533                 (t
1534                  ;; We have almost exhausted our options. See if the
1535                  ;; user has made any other command-line options available
1536                  (let ((hooks command-line-functions);; lrs 7/31/89
1537                        (did-hook nil))
1538                    (while (and hooks
1539                                (not (setq did-hook (funcall (car hooks)))))
1540                      (setq hooks (cdr hooks)))
1541                    (if (not did-hook)
1542                        ;; Ok, presume that the argument is a file name
1543                        (progn
1544                          (if (string-match "\\`-" argi)
1545                              (error "Unknown option `%s'" argi))
1546                          (setq file-count (1+ file-count))
1547                          (let ((file
1548                                 (expand-file-name
1549                                  (command-line-normalize-file-name orig-argi)
1550                                  dir)))
1551                            (if (= file-count 1)
1552                                (setq first-file-buffer (find-file file))
1553                              (find-file-other-window file)))
1554                          (or (zerop line)
1555                              (goto-line line))
1556                          (setq line 0))))))))
1557       ;; If 3 or more files visited, and not all visible,
1558       ;; show user what they all are.
1559       (and (> file-count 2)
1560            (not noninteractive)
1561            (or (get-buffer-window first-file-buffer)
1562                (progn (other-window 1)
1563                       (buffer-menu)))))))
1564
1565
1566 (defun command-line-normalize-file-name (file)
1567   "Collapse multiple slashes to one, to handle non-Emacs file names."
1568   (save-match-data
1569     ;; Use arg 1 so that we don't collapse // at the start of the file name.
1570     ;; That is significant on some systems.
1571     ;; However, /// at the beginning is supposed to mean just /, not //.
1572     (if (string-match "^///+" file)
1573         (setq file (replace-match "/" t t file)))
1574     (while (string-match "//+" file 1)
1575       (setq file (replace-match "/" t t file)))
1576     file))
1577
1578 ;;; startup.el ends here