code.delx.au - gnu-emacs/blob - lisp/startup.el

   1 ;;; startup.el --- process Emacs shell arguments
   2
   3 ;; Copyright (C) 1985, 86, 92, 94, 95, 96, 97, 1998, 1999 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: FSF
   6 ;; Keywords: internal
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; This file parses the command line and gets Emacs running.  Options on
  28 ;; the command line are handled in precedence order.  The order is the
  29 ;; one in the list below; first described means first handled.  Options
  30 ;; within each category (delimited by a bar) are handled in the order
  31 ;; encountered on the command line.
  32
  33 ;; -------------------------
  34 ;; -version                  Print Emacs version to stderr, then exit
  35 ;; --version                 successfully right away.
  36 ;;                           This option is handled by emacs.c
  37 ;; -------------------------
  38 ;; -help                     Print a short usage description and exit
  39 ;; --help                    successfully right away.
  40 ;;                           This option is handled by emacs.c
  41 ;; -------------------------
  42 ;; -nl                       Do not use shared memory (for systems that
  43 ;; -no-shared-memory         support this) for the dumped Emacs data.
  44 ;;                           This option is handled by emacs.c
  45 ;;
  46 ;; -map                      For VMS.
  47 ;; --map-data                This option is handled by emacs.c
  48 ;; -------------------------
  49 ;; -t FILE                   Use FILE as the name of the terminal.
  50 ;; --terminal FILE           Using this implies "-nw" also.
  51 ;;                           This option is handled by emacs.c
  52 ;; -------------------------
  53 ;; -d DISPNAME               Use DISPNAME as the name of the X-windows
  54 ;; -display DISPNAME         display for the initial frame.
  55 ;; --display DISPNAME        This option is handled by emacs.c
  56 ;; -------------------------
  57 ;; -nw                       Do not use a windows system (but use the
  58 ;; --no-windows              terminal instead.)
  59 ;;                           This option is handled by emacs.c
  60 ;; -------------------------
  61 ;; -batch                    Execute noninteractively (messages go to stdout,
  62 ;; --batch                   variable noninteractive set to t)
  63 ;;                           This option is handled by emacs.c
  64 ;; -------------------------
  65 ;; -q                        Do not load user's init file and do not load
  66 ;; -no-init-file             "default.el".  Regardless of this switch,
  67 ;; --no-init-file            "site-start" is still loaded.
  68 ;; -------------------------
  69 ;; -no-site-file             Do not load "site-start.el".  (This is the ONLY
  70 ;; --no-site-file            way to prevent loading that file.)
  71 ;; -------------------------
  72 ;; -u USER                   Load USER's init file instead of the init
  73 ;; -user USER                file belonging to the user starting Emacs.
  74 ;; --user USER
  75 ;; -------------------------
  76 ;; -debug-init               Don't catch errors in init files; let the
  77 ;; --debug-init              debugger run.
  78 ;; -------------------------
  79 ;; -i ICONTYPE               Set type of icon using when Emacs is
  80 ;; -itype ICONTYPE           iconified under X-windows.
  81 ;; --icon-type ICONTYPE      This option is passed on to term/x-win.el
  82 ;;
  83 ;; -iconic                   Start Emacs iconified under X-windows.
  84 ;; --iconic                  This option is passed on to term/x-win.el
  85 ;; -------------------------
  86 ;; Various X-windows options for colors/fonts/geometry/title etc.
  87 ;; These options are passed on to term/x-win.el which see.  Certain
  88 ;; of these are also found in term/pc-win.el
  89 ;; -------------------------
  90 ;; FILE                      Visit FILE.
  91 ;; -visit FILE
  92 ;; --visit FILE
  93 ;; -file FILE
  94 ;; --file FILE
  95 ;;
  96 ;; -L DIRNAME                Add DIRNAME to load-path
  97 ;; -directory DIRNAME
  98 ;; --directory DIRNAME
  99 ;;
 100 ;; -l FILE                   Load and execute the Emacs lisp code
 101 ;; -load FILE                in FILE.
 102 ;; --load FILE
 103 ;;
 104 ;; -f FUNC                   Execute Emacs lisp function FUNC with
 105 ;; -funcall FUNC             no arguments.  The "-e" form is outdated
 106 ;; --funcall FUNC            and should not be used.  (It's a typo
 107 ;; -e FUNC                   promoted to a feature.)
 108 ;;
 109 ;; -eval FORM                Execute Emacs lisp form FORM.
 110 ;; --eval FORM
 111 ;; -execute EXPR
 112 ;; --execute EXPR
 113 ;;
 114 ;; -insert FILE              Insert the contents of FILE into buffer.
 115 ;; --insert FILE
 116 ;; -------------------------
 117 ;; -kill                     Kill (exit) Emacs right away.
 118 ;; --kill
 119 ;; -------------------------
 120
 121 ;;; Code:
 122
 123 (setq top-level '(normal-top-level))
 124
 125 (defvar command-line-processed nil
 126   "Non-nil once command line has been processed")
 127
 128 (defgroup initialization nil
 129   "Emacs start-up procedure"
 130   :group 'internal)
 131
 132 (defcustom inhibit-startup-message nil
 133   "*Non-nil inhibits the initial startup message.
 134 This is for use in your personal init file, once you are familiar
 135 with the contents of the startup message."
 136   :type 'boolean
 137   :group 'initialization)
 138
 139 (defcustom inhibit-startup-echo-area-message nil
 140   "*Non-nil inhibits the initial startup echo area message.
 141 Setting this variable takes effect
 142 only if you do it with the customization buffer
 143 or if your `.emacs' file contains a line of this form:
 144  (setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\")
 145 If your `.emacs' file is byte-compiled, use the following form instead:
 146  (eval '(setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\"))
 147 Thus, someone else using a copy of your `.emacs' file will see
 148 the startup message unless he personally acts to inhibit it."
 149   :type '(choice (const :tag "Don't inhibit")
 150                  (string :tag "Enter your user name, to inhibit"))
 151   :group 'initialization)
 152
 153 (defcustom inhibit-default-init nil
 154   "*Non-nil inhibits loading the `default' library."
 155   :type 'boolean
 156   :group 'initialization)
 157
 158 (defvar command-switch-alist nil
 159   "Alist of command-line switches.
 160 Elements look like (SWITCH-STRING . HANDLER-FUNCTION).
 161 HANDLER-FUNCTION receives switch name as sole arg;
 162 remaining command-line args are in the variable `command-line-args-left'.")
 163
 164 (defvar command-line-args-left nil
 165   "List of command-line args not yet processed.")
 166
 167 (defvar command-line-functions nil    ;; lrs 7/31/89
 168   "List of functions to process unrecognized command-line arguments.
 169 Each function should access the dynamically bound variables
 170 `argi' (the current argument) and `command-line-args-left' (the remaining
 171 arguments).  The function should return non-nil only if it recognizes and
 172 processes `argi'.  If it does so, it may consume successive arguments by
 173 altering `command-line-args-left' to remove them.")
 174
 175 (defvar command-line-default-directory nil
 176   "Default directory to use for command line arguments.
 177 This is normally copied from `default-directory' when Emacs starts.")
 178
 179 ;;; This is here, rather than in x-win.el, so that we can ignore these
 180 ;;; options when we are not using X.
 181 (defvar command-line-x-option-alist
 182   '(("-bw" 1 x-handle-numeric-switch border-width)
 183     ("-d" 1 x-handle-display)
 184     ("-display" 1 x-handle-display)
 185     ("-name" 1 x-handle-name-switch)
 186     ("-title" 1 x-handle-switch title)
 187     ("-T" 1 x-handle-switch title)
 188     ("-r" 0 x-handle-switch reverse t)
 189     ("-rv" 0 x-handle-switch reverse t)
 190     ("-reverse" 0 x-handle-switch reverse t)
 191     ("-reverse-video" 0 x-handle-switch reverse t)
 192     ("-fn" 1 x-handle-switch font)
 193     ("-font" 1 x-handle-switch font)
 194     ("-ib" 1 x-handle-numeric-switch internal-border-width)
 195     ("-g" 1 x-handle-geometry)
 196     ("-geometry" 1 x-handle-geometry)
 197     ("-fg" 1 x-handle-switch foreground-color)
 198     ("-foreground" 1 x-handle-switch foreground-color)
 199     ("-bg" 1 x-handle-switch background-color)
 200     ("-background" 1 x-handle-switch background-color)
 201     ("-ms" 1 x-handle-switch mouse-color)
 202     ("-itype" 0 x-handle-switch icon-type t)
 203     ("-i" 0 x-handle-switch icon-type t)
 204     ("-iconic" 0 x-handle-iconic)
 205     ("-xrm" 1 x-handle-xrm-switch)
 206     ("-cr" 1 x-handle-switch cursor-color)
 207     ("-vb" 0 x-handle-switch vertical-scroll-bars t)
 208     ("-hb" 0 x-handle-switch horizontal-scroll-bars t)
 209     ("-bd" 1 x-handle-switch)
 210     ("--border-width" 1 x-handle-numeric-switch border-width)
 211     ("--display" 1 x-handle-display)
 212     ("--name" 1 x-handle-name-switch)
 213     ("--title" 1 x-handle-switch title)
 214     ("--reverse-video" 0 x-handle-switch reverse t)
 215     ("--font" 1 x-handle-switch font)
 216     ("--internal-border" 1 x-handle-numeric-switch internal-border-width)
 217     ("--geometry" 1 x-handle-geometry)
 218     ("--foreground-color" 1 x-handle-switch foreground-color)
 219     ("--background-color" 1 x-handle-switch background-color)
 220     ("--mouse-color" 1 x-handle-switch mouse-color)
 221     ("--icon-type" 0 x-handle-switch icon-type t)
 222     ("--iconic" 0 x-handle-iconic)
 223     ("--xrm" 1 x-handle-xrm-switch)
 224     ("--cursor-color" 1 x-handle-switch cursor-color)
 225     ("--vertical-scroll-bars" 0 x-handle-switch vertical-scroll-bars t)
 226     ("--border-color" 1 x-handle-switch border-width))
 227   "Alist of X Windows options.
 228 Each element has the form
 229   (NAME NUMARGS HANDLER FRAME-PARAM VALUE)
 230 where NAME is the option name string, NUMARGS is the number of arguments
 231 that the option accepts, HANDLER is a function to call to handle the option.
 232 FRAME-PARAM (optional) is the frame parameter this option specifies,
 233 and VALUE is the value which is given to that frame parameter
 234 \(most options use the argument for this, so VALUE is not present).")
 235
 236 (defvar before-init-hook nil
 237   "Normal hook run after handling urgent options but before loading init files.")
 238
 239 (defvar after-init-hook nil
 240   "Normal hook run after loading the init files, `~/.emacs' and `default.el'.
 241 There is no `condition-case' around the running of these functions;
 242 therefore, if you set `debug-on-error' non-nil in `.emacs',
 243 an error in one of these functions will invoke the debugger.")
 244
 245 (defvar emacs-startup-hook nil
 246   "Normal hook run after loading init files and handling the command line.")
 247
 248 (defvar term-setup-hook nil
 249   "Normal hook run after loading terminal-specific Lisp code.
 250 It also follows `emacs-startup-hook'.  This hook exists for users to set,
 251 so as to override the definitions made by the terminal-specific file.
 252 Emacs never sets this variable itself.")
 253
 254 (defvar keyboard-type nil
 255   "The brand of keyboard you are using.
 256 This variable is used to define
 257 the proper function and keypad keys for use under X.  It is used in a
 258 fashion analogous to the environment variable TERM.")
 259
 260 (defvar window-setup-hook nil
 261   "Normal hook run to initialize window system display.
 262 Emacs runs this hook after processing the command line arguments and loading
 263 the user's init file.")
 264
 265 (defcustom initial-major-mode 'lisp-interaction-mode
 266   "Major mode command symbol to use for the initial *scratch* buffer."
 267   :type 'function
 268   :group 'initialization)
 269
 270 (defcustom init-file-user nil
 271   "Identity of user whose `.emacs' file is or was read.
 272 The value is nil if `-q' or `--no-init-file' was specified,
 273 meaning do not load any init file.
 274
 275 Otherwise, the value may be the null string, meaning use the init file
 276 for the user that originally logged in, or it may be a
 277 string containing a user's name meaning use that person's init file.
 278
 279 In either of the latter cases, `(concat \"~\" init-file-user \"/\")'
 280 evaluates to the name of the directory where the `.emacs' file was
 281 looked for.
 282
 283 Setting `init-file-user' does not prevent Emacs from loading
 284 `site-start.el'.  The only way to do that is to use `--no-site-file'."
 285   :type '(choice (const :tag "none" nil) string)
 286   :group 'initialization)
 287
 288 (defcustom site-run-file "site-start"
 289   "File containing site-wide run-time initializations.
 290 This file is loaded at run-time before `~/.emacs'.  It contains inits
 291 that need to be in place for the entire site, but which, due to their
 292 higher incidence of change, don't make sense to load into emacs'
 293 dumped image.  Thus, the run-time load order is: 1. file described in
 294 this variable, if non-nil; 2. `~/.emacs'; 3. `default.el'.
 295
 296 Don't use the `site-start.el' file for things some users may not like.
 297 Put them in `default.el' instead, so that users can more easily
 298 override them.  Users can prevent loading `default.el' with the `-q'
 299 option or by setting `inhibit-default-init' in their own init files,
 300 but inhibiting `site-start.el' requires `--no-site-file', which
 301 is less convenient."
 302   :type '(choice (const :tag "none" nil) string)
 303   :group 'initialization)
 304
 305 (defcustom mail-host-address nil
 306   "*Name of this machine, for purposes of naming users."
 307   :type '(choice (const nil) string)
 308   :group 'mail)
 309
 310 (defcustom user-mail-address nil
 311   "*Full mailing address of this user.
 312 This is initialized based on `mail-host-address',
 313 after your init file is read, in case it sets `mail-host-address'."
 314   :type 'string
 315   :group 'mail)
 316
 317 (defcustom auto-save-list-file-prefix
 318   (if (eq system-type 'ms-dos)
 319       "~/_s"  ; MS-DOS cannot have initial dot, and allows only 8.3 names
 320     "~/.saves-")
 321   "Prefix for generating `auto-save-list-file-name'.
 322 This is used after reading your `.emacs' file to initialize
 323 `auto-save-list-file-name', by appending Emacs's pid and the system name,
 324 if you have not already set `auto-save-list-file-name' yourself.
 325 Set this to nil if you want to prevent `auto-save-list-file-name'
 326 from being initialized."
 327   :type '(choice (const :tag "Don't record a session's auto save list" nil)
 328                  string)
 329   :group 'auto-save)
 330
 331 (defvar init-file-debug nil)
 332
 333 (defvar init-file-had-error nil)
 334
 335 (defvar normal-top-level-add-subdirs-inode-list nil)
 336
 337 (defun normal-top-level-add-subdirs-to-load-path ()
 338   "Add all subdirectories of current directory to `load-path'.
 339 More precisely, this uses only the subdirectories whose names
 340 start with letters or digits; it excludes any subdirectory named `RCS'
 341 or `CVS', and any subdirectory that contains a file named `.nosearch'."
 342   (let (dirs
 343         attrs
 344         (pending (list default-directory)))
 345     ;; This loop does a breadth-first tree walk on DIR's subtree,
 346     ;; putting each subdir into DIRS as its contents are examined.
 347     (while pending
 348       (setq dirs (cons (car pending) dirs))
 349       (setq pending (cdr pending))
 350       (setq attrs (nthcdr 10 (file-attributes (car dirs))))
 351       (let ((contents (directory-files (car dirs)))
 352             (default-directory (car dirs)))
 353         (unless (member attrs normal-top-level-add-subdirs-inode-list)
 354           (setq normal-top-level-add-subdirs-inode-list
 355                 (cons attrs normal-top-level-add-subdirs-inode-list))
 356           (while contents
 357             (unless (member (car contents) '("." ".." "RCS" "CVS"))
 358               (when (and (string-match "\\`[a-zA-Z0-9]" (car contents))
 359                          ;; Avoid doing a `stat' when it isn't necessary
 360                          ;; because that can cause trouble when an NFS server
 361                          ;; is down.
 362                          (not (string-match "\\.elc?\\'" (car contents)))
 363                          (file-directory-p (car contents)))
 364                 (let ((expanded (expand-file-name (car contents))))
 365                   (unless (file-exists-p (expand-file-name ".nosearch"
 366                                                            expanded))
 367                     (setq pending (nconc pending (list expanded)))))))
 368             (setq contents (cdr contents))))))
 369     (normal-top-level-add-to-load-path (cdr (nreverse dirs)))))
 370
 371 ;; This function is called from a subdirs.el file.
 372 ;; It assumes that default-directory is the directory
 373 ;; in which the subdirs.el file exists,
 374 ;; and it adds to load-path the subdirs of that directory
 375 ;; as specified in DIRS.  Normally the elements of DIRS are relative.
 376 (defun normal-top-level-add-to-load-path (dirs)
 377   (let ((tail load-path)
 378         (thisdir (directory-file-name default-directory)))
 379     (while (and tail
 380                 (not (equal thisdir (car tail)))
 381                 (not (and (memq system-type '(ms-dos windows-nt))
 382                           (equal (downcase thisdir) (downcase (car tail))))))
 383       (setq tail (cdr tail)))
 384     (setcdr tail (append (mapcar 'expand-file-name dirs) (cdr tail)))))
 385
 386 (defun normal-top-level ()
 387   (if command-line-processed
 388       (message "Back to top level.")
 389     (setq command-line-processed t)
 390     ;; Give *Messages* the same default-directory as *scratch*,
 391     ;; just to keep things predictable.
 392     (let ((dir default-directory))
 393       (save-excursion
 394         (set-buffer (get-buffer "*Messages*"))
 395         (setq default-directory dir)))
 396     ;; For root, preserve owner and group when editing files.
 397     (if (equal (user-uid) 0)
 398         (setq backup-by-copying-when-mismatch t))
 399     ;; Look in each dir in load-path for a subdirs.el file.
 400     ;; If we find one, load it, which will add the appropriate subdirs
 401     ;; of that dir into load-path,
 402     (let ((tail load-path)
 403           new)
 404       (while tail
 405         (setq new (cons (car tail) new))
 406         (let ((default-directory (car tail)))
 407           (load (expand-file-name "subdirs.el" (car tail)) t t t))
 408         (setq tail (cdr tail))))
 409     (if (not (eq system-type 'vax-vms))
 410         (progn
 411           ;; If the PWD environment variable isn't accurate, delete it.
 412           (let ((pwd (getenv "PWD")))
 413             (and (stringp pwd)
 414                  ;; Use FOO/., so that if FOO is a symlink, file-attributes
 415                  ;; describes the directory linked to, not FOO itself.
 416                  (or (equal (file-attributes
 417                              (concat (file-name-as-directory pwd) "."))
 418                             (file-attributes
 419                              (concat (file-name-as-directory default-directory)
 420                                      ".")))
 421                      (setq process-environment
 422                            (delete (concat "PWD=" pwd)
 423                                    process-environment)))))))
 424     (setq default-directory (abbreviate-file-name default-directory))
 425     (let ((menubar-bindings-done nil))
 426       (unwind-protect
 427           (command-line)
 428         ;; Do this again, in case .emacs defined more abbreviations.
 429         (setq default-directory (abbreviate-file-name default-directory))
 430         ;; Specify the file for recording all the auto save files of this session.
 431         ;; This is used by recover-session.
 432         (or auto-save-list-file-name
 433             (and auto-save-list-file-prefix
 434                  (setq auto-save-list-file-name
 435                        ;; Under MS-DOS our PID is almost always reused between
 436                        ;; Emacs invocations.  We need something more unique.
 437                        (if (eq system-type 'ms-dos)
 438                            (concat
 439                             (make-temp-name
 440                              (expand-file-name auto-save-list-file-prefix))
 441                             "~")
 442
 443                          (expand-file-name (format "%s%d-%s~"
 444                                                    auto-save-list-file-prefix
 445                                                    (emacs-pid)
 446                                                    (system-name)))))))
 447         (run-hooks 'emacs-startup-hook)
 448         (and term-setup-hook
 449              (run-hooks 'term-setup-hook))
 450         ;; Modify the initial frame based on what .emacs puts into
 451         ;; ...-frame-alist.
 452         (if (fboundp 'frame-notice-user-settings)
 453             (frame-notice-user-settings))
 454         ;; Now we know the user's default font, so add it to the menu.
 455         (if (fboundp 'font-menu-add-default)
 456             (font-menu-add-default))
 457         (and window-setup-hook
 458              (run-hooks 'window-setup-hook))
 459         (or menubar-bindings-done
 460             (if (memq window-system '(x w32))
 461                 (precompute-menubar-bindings)))))))
 462
 463 ;; Precompute the keyboard equivalents in the menu bar items.
 464 (defun precompute-menubar-bindings ()
 465   (let ((submap (lookup-key global-map [menu-bar])))
 466     (while submap
 467       (and (consp (car submap))
 468            (symbolp (car (car submap)))
 469            (stringp (car-safe (cdr (car submap))))
 470            (keymapp (cdr (cdr (car submap))))
 471            (progn
 472              (x-popup-menu nil (cdr (cdr (car submap))))
 473              (if purify-flag
 474                  (garbage-collect))))
 475       (setq submap (cdr submap))))
 476   (setq define-key-rebound-commands t))
 477
 478 (defun command-line ()
 479   (setq command-line-default-directory default-directory)
 480
 481   ;; Choose a reasonable location for temporary files.
 482   (setq temporary-file-directory
 483         (file-name-as-directory
 484          (cond ((memq system-type '(ms-dos windows-nt))
 485                 (or (getenv "TEMP") (getenv "TMPDIR") (getenv "TMP") "c:/temp"))
 486                ((memq system-type '(vax-vms axp-vms))
 487                 (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "SYS$SCRATCH:"))
 488                (t
 489                 (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "/tmp")))))
 490   (setq small-temporary-file-directory
 491         (if (eq system-type 'ms-dos)
 492             (getenv "TMPDIR")))
 493
 494   ;; See if we should import version-control from the environment variable.
 495   (let ((vc (getenv "VERSION_CONTROL")))
 496     (cond ((eq vc nil))                 ;don't do anything if not set
 497           ((or (string= vc "t")
 498                (string= vc "numbered"))
 499            (setq version-control t))
 500           ((or (string= vc "nil")
 501                (string= vc "existing"))
 502            (setq version-control nil))
 503           ((or (string= vc "never")
 504                (string= vc "simple"))
 505            (setq version-control 'never))))
 506
 507   (set-locale-environment nil)
 508
 509   ;;! This has been commented out; I currently find the behavior when
 510   ;;! split-window-keep-point is nil disturbing, but if I can get used
 511   ;;! to it, then it would be better to eliminate the option.
 512   ;;! ;; Choose a good default value for split-window-keep-point.
 513   ;;! (setq split-window-keep-point (> baud-rate 2400))
 514
 515   ;; Set the default strings to display in mode line for
 516   ;; end-of-line formats that aren't native to this platform.
 517   (cond
 518    ((memq system-type '(ms-dos windows-nt emx))
 519     (setq eol-mnemonic-unix "(Unix)")
 520     (setq eol-mnemonic-mac  "(Mac)"))
 521    ;; Mac-specific settings should come here, once there's a
 522    ;; system-type symbol specific to MacOS.
 523    (t   ; this is for Unix/GNU/Linux systems
 524     (setq eol-mnemonic-dos  "(DOS)")
 525     (setq eol-mnemonic-mac  "(Mac)")))
 526
 527   ;; Read window system's init file if using a window system.
 528   (condition-case error
 529       (if (and window-system (not noninteractive))
 530           (load (concat term-file-prefix
 531                         (symbol-name window-system)
 532                         "-win")
 533                 ;; Every window system should have a startup file;
 534                 ;; barf if we can't find it.
 535                 nil t))
 536     ;; If we can't read it, print the error message and exit.
 537     (error
 538      (princ
 539       (if (eq (car error) 'error)
 540           (apply 'concat (cdr error))
 541         (if (memq 'file-error (get (car error) 'error-conditions))
 542             (format "%s: %s"
 543                      (nth 1 error)
 544                      (mapconcat '(lambda (obj) (prin1-to-string obj t))
 545                                 (cdr (cdr error)) ", "))
 546           (format "%s: %s"
 547                    (get (car error) 'error-message)
 548                    (mapconcat '(lambda (obj) (prin1-to-string obj t))
 549                               (cdr error) ", "))))
 550       'external-debugging-output)
 551      (setq window-system nil)
 552      (kill-emacs)))
 553
 554   (let ((done nil)
 555         (args (cdr command-line-args)))
 556
 557     ;; Figure out which user's init file to load,
 558     ;; either from the environment or from the options.
 559     (setq init-file-user (if noninteractive nil (user-login-name)))
 560     ;; If user has not done su, use current $HOME to find .emacs.
 561     (and init-file-user (string= init-file-user (user-real-login-name))
 562          (setq init-file-user ""))
 563
 564     ;; Process the command-line args, and delete the arguments
 565     ;; processed.  This is consistent with the way main in emacs.c
 566     ;; does things.
 567     (while (and (not done) args)
 568       (let ((longopts '(("--no-init-file") ("--no-site-file") ("--user")
 569                         ("--debug-init") ("--iconic") ("--icon-type")))
 570             (argi (car args))
 571             (argval nil))
 572         ;; Handle --OPTION=VALUE format.
 573         (if (and (string-match "\\`--" argi)
 574                  (string-match "=" argi))
 575             (setq argval (substring argi (match-end 0))
 576                   argi (substring argi 0 (match-beginning 0))))
 577         (or (equal argi "--")
 578             (let ((completion (try-completion argi longopts)))
 579               (if (eq completion t)
 580                   (setq argi (substring argi 1))
 581                 (if (stringp completion)
 582                     (let ((elt (assoc completion longopts)))
 583                       (or elt
 584                           (error "Option `%s' is ambiguous" argi))
 585                       (setq argi (substring (car elt) 1)))
 586                   (setq argval nil)))))
 587         (cond
 588          ((or (string-equal argi "-q")
 589               (string-equal argi "-no-init-file"))
 590           (setq init-file-user nil
 591                 args (cdr args)))
 592          ((or (string-equal argi "-u")
 593               (string-equal argi "-user"))
 594           (or argval
 595               (setq args (cdr args)
 596                     argval (car args)))
 597           (setq init-file-user argval
 598                 argval nil
 599                 args (cdr args)))
 600          ((string-equal argi "-no-site-file")
 601           (setq site-run-file nil
 602                 args (cdr args)))
 603          ((string-equal argi "-debug-init")
 604           (setq init-file-debug t
 605                 args (cdr args)))
 606          ((string-equal argi "-iconic")
 607           (setq initial-frame-alist
 608                 (cons '(visibility . icon) initial-frame-alist))
 609           (setq args (cdr args)))
 610          ((or (string-equal argi "-icon-type")
 611               (string-equal argi "-i")
 612               (string-equal argi "-itype"))
 613           (setq default-frame-alist
 614                 (cons '(icon-type . t) default-frame-alist))
 615           (setq args (cdr args)))
 616          (t (setq done t)))
 617         ;; Was argval set but not used?
 618         (and argval
 619              (error "Option `%s' doesn't allow an argument" argi))))
 620
 621     ;; Re-attach the program name to the front of the arg list.
 622     (and command-line-args (setcdr command-line-args args)))
 623
 624   ;; Under X Windows, this creates the X frame and deletes the terminal frame.
 625   (if (fboundp 'frame-initialize)
 626       (frame-initialize))
 627   ;; If frame was created with a menu bar, set menu-bar-mode on.
 628   (if (or (not (memq window-system '(x w32)))
 629           (> (cdr (assq 'menu-bar-lines (frame-parameters))) 0))
 630       (menu-bar-mode t))
 631
 632   (run-hooks 'before-init-hook)
 633
 634   ;; Run the site-start library if it exists.  The point of this file is
 635   ;; that it is run before .emacs.  There is no point in doing this after
 636   ;; .emacs; that is useless.
 637   (if site-run-file
 638       (load site-run-file t t))
 639
 640   ;; Register available input methods by loading LEIM list file.
 641   (load "leim-list.el" 'noerror 'nomessage 'nosuffix)
 642
 643   ;; Sites should not disable this.  Only individuals should disable
 644   ;; the startup message.
 645   (setq inhibit-startup-message nil)
 646
 647   ;; Load that user's init file, or the default one, or none.
 648   (let (debug-on-error-from-init-file
 649         debug-on-error-should-be-set
 650         (debug-on-error-initial
 651          (if (eq init-file-debug t) 'startup init-file-debug))
 652         (orig-enable-multibyte default-enable-multibyte-characters))
 653     (let ((debug-on-error debug-on-error-initial)
 654           ;; This function actually reads the init files.
 655           (inner
 656            (function
 657             (lambda ()
 658               (if init-file-user
 659                   (let ((user-init-file-1
 660                           (cond
 661                            ((eq system-type 'ms-dos)
 662                             (concat "~" init-file-user "/_emacs"))
 663                            ((eq system-type 'windows-nt)
 664                             (if (directory-files "~" nil "^\\.emacs\\(\\.elc?\\)?$")
 665                                 "~/.emacs"
 666                               "~/_emacs"))
 667                            ((eq system-type 'vax-vms)
 668                             "sys$login:.emacs")
 669                            (t
 670                             (concat "~" init-file-user "/.emacs")))))
 671                     ;; This tells `load' to store the file name found
 672                     ;; into user-init-file.
 673                     (setq user-init-file t)
 674                     (load user-init-file-1 t t)
 675                     ;; If we did not find the user's init file,
 676                     ;; set user-init-file conclusively to nil;
 677                     ;; don't let it be set from default.el.
 678                     (if (eq user-init-file t)
 679                         (setq user-init-file nil))
 680                     (or inhibit-default-init
 681                         (let ((inhibit-startup-message nil))
 682                           ;; Users are supposed to be told their rights.
 683                           ;; (Plus how to get help and how to undo.)
 684                           ;; Don't you dare turn this off for anyone
 685                           ;; except yourself.
 686                           (load "default" t t)))))))))
 687       (if init-file-debug
 688           ;; Do this without a condition-case if the user wants to debug.
 689           (funcall inner)
 690         (condition-case error
 691             (progn
 692               (funcall inner)
 693               (setq init-file-had-error nil))
 694           (error (message "Error in init file: %s%s%s"
 695                           (get (car error) 'error-message)
 696                           (if (cdr error) ": " "")
 697                           (mapconcat 'prin1-to-string (cdr error) ", "))
 698                  (setq init-file-had-error t))))
 699       ;; If we can tell that the init file altered debug-on-error,
 700       ;; arrange to preserve the value that it set up.
 701       (or (eq debug-on-error debug-on-error-initial)
 702           (setq debug-on-error-should-be-set t
 703                 debug-on-error-from-init-file debug-on-error)))
 704     (if debug-on-error-should-be-set
 705         (setq debug-on-error debug-on-error-from-init-file))
 706     (unless (or default-enable-multibyte-characters
 707                 (eq orig-enable-multibyte default-enable-multibyte-characters))
 708       ;; Init file changed to unibyte.  Reset existing multibyte
 709       ;; buffers (probably *scratch*, *Messages*, *Minibuff-0*).
 710       ;; Arguably this should only be done if they're free of
 711       ;; multibyte characters.
 712       (mapcar (lambda (buffer)
 713                 (with-current-buffer buffer
 714                   (if enable-multibyte-characters
 715                       (set-buffer-multibyte nil))))
 716               (buffer-list))
 717       ;; Also re-set the language environment in case it was
 718       ;; originally done before unibyte was set and is sensitive to
 719       ;; unibyte (display table, terminal coding system &c).
 720       (set-language-environment current-language-environment)))
 721
 722   ;; Do this here in case the init file sets mail-host-address.
 723   (or user-mail-address
 724       (setq user-mail-address (concat (user-login-name) "@"
 725                                       (or mail-host-address
 726                                           (system-name)))))
 727
 728   (run-hooks 'after-init-hook)
 729
 730   ;; If *scratch* exists and init file didn't change its mode, initialize it.
 731   (if (get-buffer "*scratch*")
 732       (save-excursion
 733         (set-buffer "*scratch*")
 734         (if (eq major-mode 'fundamental-mode)
 735             (funcall initial-major-mode))))
 736
 737   ;; Register default TTY colors for the case the terminal hasn't a
 738   ;; terminal init file.  The colors are good for xterm-color and the
 739   ;; FreeBSD console (cons.*).  They should be sufficient for Linux
 740   ;; too, I guess.
 741   (or (eq window-system 'pc)    ; pc-win.el did this already
 742       (let ((colors '("black" "red" "green" "yellow" "blue" "magenta"
 743                       "cyan" "white"))
 744             (i 0))
 745         (while colors
 746           (face-register-tty-color (car colors) i)
 747           (setq colors (cdr colors) i (1+ i)))))
 748
 749   ;; Load library for our terminal type.
 750   ;; User init file can set term-file-prefix to nil to prevent this.
 751   (and term-file-prefix (not noninteractive) (not window-system)
 752        (let ((term (getenv "TERM"))
 753              hyphend)
 754          (while (and term
 755                      (not (load (concat term-file-prefix term) t t)))
 756            ;; Strip off last hyphen and what follows, then try again
 757            (if (setq hyphend (string-match "[-_][^-_]+$" term))
 758                (setq term (substring term 0 hyphend))
 759              (setq term nil)))))
 760
 761   ;; Process the remaining args.
 762   (command-line-1 (cdr command-line-args))
 763
 764   ;; If -batch, terminate after processing the command options.
 765   (if noninteractive (kill-emacs t)))
 766
 767 (defcustom initial-scratch-message "\
 768 ;; This buffer is for notes you don't want to save, and for Lisp evaluation.
 769 ;; If you want to create a file, visit that file with C-x C-f,
 770 ;; then enter the text in that file's own buffer.
 771
 772 "
 773   "Initial message displayed in *scratch* buffer at startup.
 774 If this is nil, no message will be displayed."
 775   :type 'string)
 776
 777 (defun command-line-1 (command-line-args-left)
 778   (or noninteractive (input-pending-p) init-file-had-error
 779       (and inhibit-startup-echo-area-message
 780            user-init-file
 781            (or (and (get 'inhibit-startup-echo-area-message 'saved-value)
 782                     (equal inhibit-startup-echo-area-message
 783                            (if (string= init-file-user "")
 784                                (user-login-name)
 785                              init-file-user)))
 786                ;; Wasn't set with custom; see if .emacs has a setq.
 787                (let ((buffer (get-buffer-create " *temp*")))
 788                  (prog1
 789                      (condition-case nil
 790                          (save-excursion
 791                            (set-buffer buffer)
 792                            (insert-file-contents user-init-file)
 793                            (re-search-forward
 794                             (concat
 795                              "([ \t\n]*setq[ \t\n]+"
 796                              "inhibit-startup-echo-area-message[ \t\n]+"
 797                              (regexp-quote
 798                               (prin1-to-string
 799                                (if (string= init-file-user "")
 800                                    (user-login-name)
 801                                  init-file-user)))
 802                              "[ \t\n]*)")
 803                             nil t))
 804                        (error nil))
 805                    (kill-buffer buffer)))))
 806       (message (if (eq (key-binding "\C-h\C-p") 'describe-project)
 807                    "For information about the GNU Project and its goals, type C-h C-p."
 808                  (substitute-command-keys
 809                   "For information about the GNU Project and its goals, type \\[describe-project]."))))
 810   (when (and (not noninteractive)
 811              (memq window-system '(x w32)))
 812     (make-mode-line-mouse-sensitive))
 813   (if (null command-line-args-left)
 814       (cond ((and (not inhibit-startup-message) (not noninteractive)
 815                   ;; Don't clobber a non-scratch buffer if init file
 816                   ;; has selected it.
 817                   (string= (buffer-name) "*scratch*"))
 818              ;; If there are no switches to process, we might as well
 819              ;; run this hook now, and there may be some need to do it
 820              ;; before doing any output.
 821              (and term-setup-hook
 822                   (run-hooks 'term-setup-hook))
 823              ;; Don't let the hook be run twice.
 824              (setq term-setup-hook nil)
 825
 826              ;; It's important to notice the user settings before we
 827              ;; display the startup message; otherwise, the settings
 828              ;; won't take effect until the user gives the first
 829              ;; keystroke, and that's distracting.
 830              (if (fboundp 'frame-notice-user-settings)
 831                  (frame-notice-user-settings))
 832
 833              (and window-setup-hook
 834                   (run-hooks 'window-setup-hook))
 835              (setq window-setup-hook nil)
 836              ;; Do this now to avoid an annoying delay if the user
 837              ;; clicks the menu bar during the sit-for.
 838              (when (memq window-system '(x w32))
 839                (precompute-menubar-bindings))
 840              (setq menubar-bindings-done t)
 841              (when (= (buffer-size) 0)
 842                (let ((buffer-undo-list t))
 843                  (unwind-protect
 844                      (when (not (input-pending-p))
 845                        (goto-char (point-max))
 846                        ;; The convention for this piece of code is that
 847                        ;; each piece of output starts with one or two newlines
 848                        ;; and does not end with any newlines.
 849                        (insert "Welcome to GNU Emacs")
 850                        (if (eq system-type 'gnu/linux)
 851                            (insert ", one component of a Linux-based GNU system."))
 852                        (insert "\n")
 853                        (if (assq 'display (frame-parameters))
 854                            (progn
 855                              (insert "\
 856 The menu bar and scroll bar are sufficient for basic editing with the mouse.
 857
 858 Useful Files menu items:
 859 Exit Emacs              (or type Control-x followed by Control-c)
 860 Recover Session         recover files you were editing before a crash
 861
 862 Important Help menu items:
 863 Emacs Tutorial          Learn-by-doing tutorial for using Emacs efficiently.
 864 \(Non)Warranty          GNU Emacs comes with ABSOLUTELY NO WARRANTY
 865 Copying Conditions      Conditions for redistributing and changing Emacs.
 866 Getting New Versions    How to obtain the latest version of Emacs.
 867 ")
 868                              (insert "\n\n" (emacs-version)
 869                                      "
 870 Copyright (C) 1999 Free Software Foundation, Inc."))
 871                          ;; If keys have their default meanings,
 872                          ;; use precomputed string to save lots of time.
 873                          (if (and (eq (key-binding "\C-h") 'help-command)
 874                                   (eq (key-binding "\C-xu") 'advertised-undo)
 875                                   (eq (key-binding "\C-x\C-c") 'save-buffers-kill-emacs)
 876                                   (eq (key-binding "\C-ht") 'help-with-tutorial)
 877                                   (eq (key-binding "\C-hi") 'info)
 878                                   (eq (key-binding "\C-h\C-n") 'view-emacs-news))
 879                              (insert "
 880 Get help           C-h  (Hold down CTRL and press h)
 881 Undo changes       C-x u       Exit Emacs               C-x C-c
 882 Get a tutorial     C-h t       Use Info to read docs    C-h i")
 883                            (insert (substitute-command-keys
 884                                     (format "\n
 885 Get help           %s
 886 Undo changes       \\[advertised-undo]
 887 Exit Emacs         \\[save-buffers-kill-emacs]
 888 Get a tutorial     \\[help-with-tutorial]
 889 Use Info to read docs   \\[info]"
 890                                             (let ((where (where-is-internal
 891                                                           'help-command nil t)))
 892                                               (if where
 893                                                   (key-description where)
 894                                                 "M-x help"))))))
 895                          ;; Say how to use the menu bar
 896                          ;; if that is not with the mouse.
 897                          (if (and (eq (key-binding "\M-`") 'tmm-menubar)
 898                                   (eq (key-binding [f10]) 'tmm-menubar))
 899                              (insert "
 900 Activate menubar   F10  or  ESC `  or   M-`")
 901                            (insert (substitute-command-keys "
 902 Activate menubar     \\[tmm-menubar]")))
 903
 904                        ;; Windows and MSDOS (currently) do not count as
 905                        ;; window systems, but do have mouse support.
 906                          (if window-system
 907                              (insert "
 908 Mode-specific menu   C-mouse-3 (third button, with CTRL)"))
 909                          ;; Many users seem to have problems with these.
 910                          (insert "
 911 \(`C-' means use the CTRL key.  `M-' means use the Meta (or Alt) key.
 912 If you have no Meta key, you may instead type ESC followed by the character.)")
 913                          (and auto-save-list-file-prefix
 914                               (directory-files
 915                                (file-name-directory auto-save-list-file-prefix)
 916                                nil
 917                                (concat "\\`"
 918                                        (regexp-quote (file-name-nondirectory
 919                                                       auto-save-list-file-prefix)))
 920                                t)
 921                               (insert "\n\nIf an Emacs session crashed recently, "
 922                                       "type M-x recover-session RET\nto recover"
 923                                       " the files you were editing."))
 924
 925                          (insert "\n\n" (emacs-version)
 926                                  "
 927 Copyright (C) 1999 Free Software Foundation, Inc.")
 928                          (if (and (eq (key-binding "\C-h\C-c") 'describe-copying)
 929                                   (eq (key-binding "\C-h\C-d") 'describe-distribution)
 930                                   (eq (key-binding "\C-h\C-w") 'describe-no-warranty))
 931                              (insert
 932                               "\n
 933 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type C-h C-w for full details.
 934 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
 935 of Emacs and modify it; type C-h C-c to see the conditions.
 936 Type C-h C-d for information on getting the latest version.")
 937                            (insert (substitute-command-keys
 938                                     "\n
 939 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type \\[describe-no-warranty] for full details.
 940 Emacs is Free Software--Free as in Freedom--so you can redistribute copies
 941 of Emacs and modify it; type \\[describe-copying] to see the conditions.
 942 Type \\[describe-distribution] for information on getting the latest version."))))
 943                        (goto-char (point-min))
 944
 945                        (set-buffer-modified-p nil)
 946                        (sit-for 120))
 947                    (with-current-buffer (get-buffer "*scratch*")
 948                      (erase-buffer)
 949                      (and initial-scratch-message
 950                           (insert initial-scratch-message))
 951                      (set-buffer-modified-p nil)))))))
 952     ;; Delay 2 seconds after the init file error message
 953     ;; was displayed, so user can read it.
 954     (if init-file-had-error
 955         (sit-for 2))
 956     (let ((dir command-line-default-directory)
 957           (file-count 0)
 958           first-file-buffer
 959           tem
 960           just-files  ;; t if this follows the magic -- option.
 961           ;; This includes our standard options' long versions
 962           ;; and long versions of what's on command-switch-alist.
 963           (longopts
 964            (append '(("--funcall") ("--load") ("--insert") ("--kill")
 965                      ("--directory") ("--eval") ("--execute")
 966                      ("--find-file") ("--visit") ("--file"))
 967                    (mapcar '(lambda (elt)
 968                               (list (concat "-" (car elt))))
 969                            command-switch-alist)))
 970           (line 0))
 971
 972       ;; Add the long X options to longopts.
 973       (setq tem command-line-x-option-alist)
 974       (while tem
 975         (if (string-match "^--" (car (car tem)))
 976             (setq longopts (cons (list (car (car tem))) longopts)))
 977         (setq tem (cdr tem)))
 978
 979       ;; Loop, processing options.
 980       (while (and command-line-args-left)
 981         (let* ((argi (car command-line-args-left))
 982                (orig-argi argi)
 983                argval completion
 984                ;; List of directories specified in -L/--directory,
 985                ;; in reverse of the order specified.
 986                extra-load-path
 987                (initial-load-path load-path))
 988           (setq command-line-args-left (cdr command-line-args-left))
 989
 990           ;; Do preliminary decoding of the option.
 991           (if just-files
 992               ;; After --, don't look for options; treat all args as files.
 993               (setq argi "")
 994             ;; Convert long options to ordinary options
 995             ;; and separate out an attached option argument into argval.
 996             (if (string-match "^--[^=]*=" argi)
 997                 (setq argval (substring argi (match-end 0))
 998                       argi (substring argi 0 (1- (match-end 0)))))
 999             (if (equal argi "--")
1000                 (setq completion nil)
1001               (setq completion (try-completion argi longopts)))
1002             (if (eq completion t)
1003                 (setq argi (substring argi 1))
1004               (if (stringp completion)
1005                   (let ((elt (assoc completion longopts)))
1006                     (or elt
1007                         (error "Option `%s' is ambiguous" argi))
1008                     (setq argi (substring (car elt) 1)))
1009                 (setq argval nil argi orig-argi))))
1010
1011           ;; Execute the option.
1012           (cond ((setq tem (assoc argi command-switch-alist))
1013                  (if argval
1014                      (let ((command-line-args-left
1015                             (cons argval command-line-args-left)))
1016                        (funcall (cdr tem) argi))
1017                    (funcall (cdr tem) argi)))
1018
1019                 ((or (string-equal argi "-f")  ;what the manual claims
1020                      (string-equal argi "-funcall")
1021                      (string-equal argi "-e")) ; what the source used to say
1022                  (if argval
1023                      (setq tem (intern argval))
1024                    (setq tem (intern (car command-line-args-left)))
1025                    (setq command-line-args-left (cdr command-line-args-left)))
1026                  (if (arrayp (symbol-function tem))
1027                      (command-execute tem)
1028                    (funcall tem)))
1029
1030                 ((or (string-equal argi "-eval")
1031                      (string-equal argi "-execute"))
1032                  (if argval
1033                      (setq tem argval)
1034                    (setq tem (car command-line-args-left))
1035                    (setq command-line-args-left (cdr command-line-args-left)))
1036                  (eval (read tem)))
1037                 ;; Set the default directory as specified in -L.
1038
1039                 ((or (string-equal argi "-L")
1040                      (string-equal argi "-directory"))
1041                  (if argval
1042                      (setq tem argval)
1043                    (setq tem (car command-line-args-left)
1044                          command-line-args-left (cdr command-line-args-left)))
1045                  (setq tem (command-line-normalize-file-name tem))
1046                  (setq extra-load-path
1047                        (cons (expand-file-name tem) extra-load-path))
1048                  (setq load-path (append (nreverse extra-load-path)
1049                                          initial-load-path)))
1050
1051                 ((or (string-equal argi "-l")
1052                      (string-equal argi "-load"))
1053                  (if argval
1054                      (setq tem argval)
1055                    (setq tem (car command-line-args-left)
1056                          command-line-args-left (cdr command-line-args-left)))
1057                  (let ((file (command-line-normalize-file-name tem)))
1058                    ;; Take file from default dir if it exists there;
1059                    ;; otherwise let `load' search for it.
1060                    (if (file-exists-p (expand-file-name file))
1061                        (setq file (expand-file-name file)))
1062                    (load file nil t)))
1063
1064                 ((string-equal argi "-insert")
1065                  (if argval
1066                      (setq tem argval)
1067                    (setq tem (car command-line-args-left)
1068                          command-line-args-left (cdr command-line-args-left)))
1069                  (or (stringp tem)
1070                      (error "File name omitted from `-insert' option"))
1071                  (insert-file-contents (command-line-normalize-file-name tem)))
1072
1073                 ((string-equal argi "-kill")
1074                  (kill-emacs t))
1075
1076                 ((string-match "^\\+[0-9]+\\'" argi)
1077                  (setq line (string-to-int argi)))
1078
1079                 ((setq tem (assoc argi command-line-x-option-alist))
1080                  ;; Ignore X-windows options and their args if not using X.
1081                  (setq command-line-args-left
1082                        (nthcdr (nth 1 tem) command-line-args-left)))
1083
1084                 ((or (string-equal argi "-find-file")
1085                      (string-equal argi "-file")
1086                      (string-equal argi "-visit"))
1087                  ;; An explicit option to specify visiting a file.
1088                  (if argval
1089                      (setq tem argval)
1090                    (setq tem (car command-line-args-left)
1091                          command-line-args-left (cdr command-line-args-left)))
1092                  (unless (stringp tem)
1093                    (error "File name omitted from `%s' option" argi))
1094                  (setq file-count (1+ file-count))
1095                  (let ((file (expand-file-name
1096                               (command-line-normalize-file-name tem) dir)))
1097                    (if (= file-count 1)
1098                        (setq first-file-buffer (find-file file))
1099                      (find-file-other-window file)))
1100                  (or (zerop line)
1101                      (goto-line line))
1102                  (setq line 0))
1103
1104                 ((equal argi "--")
1105                  (setq just-files t))
1106                 (t
1107                  ;; We have almost exhausted our options. See if the
1108                  ;; user has made any other command-line options available
1109                  (let ((hooks command-line-functions);; lrs 7/31/89
1110                        (did-hook nil))
1111                    (while (and hooks
1112                                (not (setq did-hook (funcall (car hooks)))))
1113                      (setq hooks (cdr hooks)))
1114                    (if (not did-hook)
1115                        ;; Ok, presume that the argument is a file name
1116                        (progn
1117                          (if (string-match "\\`-" argi)
1118                              (error "Unknown option `%s'" argi))
1119                          (setq file-count (1+ file-count))
1120                          (let ((file
1121                                 (expand-file-name
1122                                  (command-line-normalize-file-name orig-argi)
1123                                  dir)))
1124                            (if (= file-count 1)
1125                                (setq first-file-buffer (find-file file))
1126                              (find-file-other-window file)))
1127                          (or (zerop line)
1128                              (goto-line line))
1129                          (setq line 0))))))))
1130       ;; If 3 or more files visited, and not all visible,
1131       ;; show user what they all are.
1132       (and (> file-count 2)
1133            (not noninteractive)
1134            (or (get-buffer-window first-file-buffer)
1135                (progn (other-window 1)
1136                       (buffer-menu)))))))
1137
1138 (defun command-line-normalize-file-name (file)
1139   "Collapse multiple slashes to one, to handle non-Emacs file names."
1140   (save-match-data
1141     ;; Use arg 1 so that we don't collapse // at the start of the file name.
1142     ;; That is significant on some systems.
1143     ;; However, /// at the beginning is supposed to mean just /, not //.
1144     (if (string-match "^///+" file)
1145         (setq file (replace-match "/" t t file)))
1146     (while (string-match "//+" file 1)
1147       (setq file (replace-match "/" t t file)))
1148     file))
1149
1150 ;;; startup.el ends here