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

   1 ;;; startup.el --- process Emacs shell arguments
   2
   3 ;; Copyright (C) 1985, 1986, 1992, 1994, 1995 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
  22 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23
  24 ;;; Commentary:
  25
  26 ;; This file parses the command line and gets Emacs running.  Options on
  27 ;; the command line are handled in precedence order.  The order is the
  28 ;; one in the list below; first described means first handled.  Options
  29 ;; within each category (delimited by a bar) are handled in the order
  30 ;; encountered on the command line.
  31
  32 ;; -------------------------
  33 ;; -version                  Print Emacs version to stderr, then exit
  34 ;; --version                 successfully right away.
  35 ;;                           This option is handled by emacs.c
  36 ;; -------------------------
  37 ;; -help                     Print a short usage description and exit
  38 ;; --help                    successfully right away.
  39 ;;                           This option is handled by emacs.c
  40 ;; -------------------------
  41 ;; -nl                       Do not use shared memory (for systems that
  42 ;; -no-shared-memory         support this) for the dumped Emacs data.
  43 ;;                           This option is handled by emacs.c
  44 ;;
  45 ;; -map                      For VMS.
  46 ;; --map-data                This option is handled by emacs.c
  47 ;; -------------------------
  48 ;; -t FILE                   Use FILE as the name of the terminal.
  49 ;; --terminal FILE           Using this implies "-nw" also.
  50 ;;                           This option is handled by emacs.c
  51 ;; -------------------------
  52 ;; -d DISPNAME               Use DISPNAME as the name of the X-windows
  53 ;; -display DISPNAME         display for the initial frame.
  54 ;; --display DISPNAME        This option is handled by emacs.c
  55 ;; -------------------------
  56 ;; -nw                       Do not use a windows system (but use the
  57 ;; --no-windows              terminal instead.)
  58 ;;                           This option is handled by emacs.c
  59 ;; -------------------------
  60 ;; -batch                    Execute noninteractively (messages go to stdout,
  61 ;; --batch                   variable noninteractive set to t)
  62 ;;                           This option is handled by emacs.c
  63 ;; -------------------------
  64 ;; -q                        Do not load user's init file and do not load
  65 ;; -no-init-file             "default.el".  Regardless of this switch,
  66 ;; --no-init-file            "site-start" is still loaded.
  67 ;; -------------------------
  68 ;; -no-site-file             Do not load "site-start.el".  (This is the ONLY
  69 ;; --no-site-file            way to prevent loading that file.)
  70 ;; -------------------------
  71 ;; -u USER                   Load USER's init file instead of the init
  72 ;; -user USER                file belonging to the user starting Emacs.
  73 ;; --user USER
  74 ;; -------------------------
  75 ;; -debug-init               Don't catch errors in init files; let the
  76 ;; --debug-init              debugger run.
  77 ;; -------------------------
  78 ;; -i ICONTYPE               Set type of icon using when Emacs is
  79 ;; -itype ICONTYPE           iconified under X-windows.
  80 ;; --icon-type ICONTYPE      This option is passed on to term/x-win.el
  81 ;;
  82 ;; -iconic                   Start Emacs iconified under X-windows.
  83 ;; --iconic                  This option is passed on to term/x-win.el
  84 ;; -------------------------
  85 ;; Various X-windows options for colors/fonts/geometry/title etc.
  86 ;; These options are passed on to term/x-win.el which see.  Certain
  87 ;; of these are also found in term/pc-win.el
  88 ;; -------------------------
  89 ;; FILE                      Visit FILE.
  90 ;;
  91 ;; -L DIRNAME                Add DIRNAME to load-path
  92 ;; -directory DIRNAME
  93 ;; --directory DIRNAME
  94 ;;
  95 ;; -l FILE                   Load and execute the Emacs lisp code
  96 ;; -load FILE                in FILE.
  97 ;; --load FILE
  98 ;;
  99 ;; -f FUNC                   Execute Emacs lisp function FUNC with
 100 ;; -funcall FUNC             no arguments.  The "-e" form is outdated
 101 ;; --funcall FUNC            and should not be used.  (It's a typo
 102 ;; -e FUNC                   promoted to a feature.)
 103 ;;
 104 ;; -eval FORM                Execute Emacs lisp form FORM.
 105 ;; --eval FORM
 106 ;;
 107 ;; -insert FILE              Insert the contents of FILE into buffer.
 108 ;; --insert FILE
 109 ;; -------------------------
 110 ;; -kill                     Kill (exit) Emacs right away.
 111 ;; --kill
 112 ;; -------------------------
 113
 114 ;;; Code:
 115
 116 (setq top-level '(normal-top-level))
 117
 118 (defvar command-line-processed nil "t once command line has been processed")
 119
 120 (defconst inhibit-startup-message nil
 121   "*Non-nil inhibits the initial startup message.
 122 This is for use in your personal init file, once you are familiar
 123 with the contents of the startup message.")
 124
 125 (defconst inhibit-startup-echo-area-message nil
 126   "*Non-nil inhibits the initial startup echo area message.
 127 Inhibition takes effect only if your `.emacs' file contains
 128 a line of this form:
 129  (setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\")
 130 If your `.emacs' file is byte-compiled, use the following form instead:
 131  (eval '(setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\"))
 132 Thus, someone else using a copy of your `.emacs' file will see
 133 the startup message unless he personally acts to inhibit it.")
 134
 135 (defconst inhibit-default-init nil
 136   "*Non-nil inhibits loading the `default' library.")
 137
 138 (defconst command-switch-alist nil
 139   "Alist of command-line switches.
 140 Elements look like (SWITCH-STRING . HANDLER-FUNCTION).
 141 HANDLER-FUNCTION receives switch name as sole arg;
 142 remaining command-line args are in the variable `command-line-args-left'.")
 143
 144 (defvar command-line-args-left nil
 145   "List of command-line args not yet processed.")
 146
 147 (defvar command-line-functions nil    ;; lrs 7/31/89
 148   "List of functions to process unrecognized command-line arguments.
 149 Each function should access the dynamically bound variables
 150 `argi' (the current argument) and `command-line-args-left' (the remaining
 151 arguments).  The function should return non-nil only if it recognizes and
 152 processes `argi'.  If it does so, it may consume successive arguments by
 153 altering `command-line-args-left' to remove them.")
 154
 155 (defvar command-line-default-directory nil
 156   "Default directory to use for command line arguments.
 157 This is normally copied from `default-directory' when Emacs starts.")
 158
 159 (defvar before-init-hook nil
 160   "Functions to call after handling urgent options but before init files.
 161 The frame system uses this to open frames to display messages while
 162 Emacs loads the user's initialization file.")
 163
 164 (defvar after-init-hook nil
 165   "Functions to call after loading the init file (`~/.emacs').
 166 The call is not protected by a condition-case, so you can set `debug-on-error'
 167 in `.emacs', and put all the actual code on `after-init-hook'.")
 168
 169 (defvar term-setup-hook nil
 170   "Functions to be called after loading terminal-specific Lisp code.
 171 See `run-hooks'.  This variable exists for users to set,
 172 so as to override the definitions made by the terminal-specific file.
 173 Emacs never sets this variable itself.")
 174
 175 (defvar keyboard-type nil
 176   "The brand of keyboard you are using.
 177 This variable is used to define
 178 the proper function and keypad keys for use under X.  It is used in a
 179 fashion analogous to the environment value TERM.")
 180
 181 (defvar window-setup-hook nil
 182   "Normal hook run to initialize window system display.
 183 Emacs runs this hook after processing the command line arguments and loading
 184 the user's init file.")
 185
 186 (defconst initial-major-mode 'lisp-interaction-mode
 187   "Major mode command symbol to use for the initial *scratch* buffer.")
 188
 189 (defvar init-file-user nil
 190   "Identity of user whose `.emacs' file is or was read.
 191 The value is nil if no init file is being used; otherwise, it may be either
 192 the null string, meaning that the init file was taken from the user that
 193 originally logged in, or it may be a string containing a user's name.
 194
 195 In either of the latter cases, `(concat \"~\" init-file-user \"/\")'
 196 evaluates to the name of the directory where the `.emacs' file was
 197 looked for.
 198
 199 Setting `init-file-user' does not prevent Emacs from loading
 200 `site-start.el'.  The only way to do that is to use `--no-site-file'.")
 201
 202 (defvar site-run-file "site-start"
 203   "File containing site-wide run-time initializations.
 204 This file is loaded at run-time before `~/.emacs'.  It contains inits
 205 that need to be in place for the entire site, but which, due to their
 206 higher incidence of change, don't make sense to load into emacs'
 207 dumped image.  Thus, the run-time load order is: 1. file described in
 208 this variable, if non-nil; 2. `~/.emacs'; 3. `default.el'.
 209
 210 Don't use the `site-start.el' file for things some users may not like.
 211 Put them in `default.el' instead, so that users can more easily
 212 override them.  Users can prevent loading `default.el' with the `-q'
 213 option or by setting `inhibit-default-init' in their own init files,
 214 but inhibiting `site-start.el' requires `--no-site-file', which
 215 is less convenient.")
 216
 217 (defconst iso-8859-1-locale-regexp "8859[-_]?1"
 218   "Regexp that specifies when to enable the ISO 8859-1 character set.
 219 We do that if this regexp matches the locale name
 220 specified by the LC_ALL, LC_CTYPE and LANG environment variables.")
 221
 222 (defvar mail-host-address nil
 223   "*Name of this machine, for purposes of naming users.")
 224
 225 (defvar user-mail-address nil
 226   "*Full mailing address of this user.")
 227
 228 (defvar auto-save-list-file-prefix "~/.saves-"
 229   "Prefix for generating auto-save-list-file-name.
 230 Emacs's pid and the system name will be appended to
 231 this prefix to create a unique file name.")
 232
 233 (defvar init-file-debug nil)
 234
 235 (defvar init-file-had-error nil)
 236
 237 ;; This function is called from the subdirs.el file.
 238 (defun normal-top-level-add-to-load-path (dirs)
 239   (let ((tail (member default-directory load-path)))
 240     (setcdr tail (append (mapcar 'expand-file-name dirs) (cdr tail)))))
 241
 242 (defun normal-top-level ()
 243   (if command-line-processed
 244       (message "Back to top level.")
 245     (setq command-line-processed t)
 246     ;; Give *Messages* the same default-directory as *scratch*,
 247     ;; just to keep things predictable.
 248     (let ((dir default-directory))
 249       (save-excursion
 250         (set-buffer (get-buffer "*Messages*"))
 251         (setq default-directory dir)))
 252     ;; Look in each dir in load-path for a subdirs.el file.
 253     ;; If we find one, load it, which will add the appropriate subdirs
 254     ;; of that dir into load-path,
 255     (let ((tail load-path)
 256           new)
 257       (while tail
 258         (setq new (cons (car tail) new))
 259         (let ((default-directory (car tail)))
 260           (load (expand-file-name "subdirs.el" (car tail)) t t t))
 261         (setq tail (cdr tail))))
 262     (if (not (eq system-type 'vax-vms))
 263         (progn
 264           ;; If the PWD environment variable isn't accurate, delete it.
 265           (let ((pwd (getenv "PWD")))
 266             (and (stringp pwd)
 267                  ;; Use FOO/., so that if FOO is a symlink, file-attributes
 268                  ;; describes the directory linked to, not FOO itself.
 269                  (or (equal (file-attributes
 270                              (concat (file-name-as-directory pwd) "."))
 271                             (file-attributes
 272                              (concat (file-name-as-directory default-directory)
 273                                      ".")))
 274                      (setq process-environment
 275                            (delete (concat "PWD=" pwd)
 276                                    process-environment)))))))
 277     (setq default-directory (abbreviate-file-name default-directory))
 278     (let ((menubar-bindings-done nil))
 279       (unwind-protect
 280           (command-line)
 281         ;; Do this again, in case .emacs defined more abbreviations.
 282         (setq default-directory (abbreviate-file-name default-directory))
 283         ;; Specify the file for recording all the auto save files of this session.
 284         ;; This is used by recover-session.
 285         (setq auto-save-list-file-name
 286               (expand-file-name
 287                (format "%s%d-%s"
 288                        auto-save-list-file-prefix
 289                        (emacs-pid)
 290                        (system-name))))
 291         (run-hooks 'emacs-startup-hook)
 292         (and term-setup-hook
 293              (run-hooks 'term-setup-hook))
 294         ;; Modify the initial frame based on what .emacs puts into
 295         ;; ...-frame-alist.
 296         (if (fboundp 'frame-notice-user-settings)
 297             (frame-notice-user-settings))
 298         ;; Now we know the user's default font, so add it to the menu.
 299         (if (fboundp 'font-menu-add-default)
 300             (font-menu-add-default))
 301         (and window-setup-hook
 302              (run-hooks 'window-setup-hook))
 303         (or menubar-bindings-done
 304             (if (eq window-system 'x)
 305                 (precompute-menubar-bindings)))))))
 306
 307 ;; Precompute the keyboard equivalents in the menu bar items.
 308 (defun precompute-menubar-bindings ()
 309   (let ((submap (lookup-key global-map [menu-bar])))
 310     (while submap
 311       (and (consp (car submap))
 312            (symbolp (car (car submap)))
 313            (stringp (car-safe (cdr (car submap))))
 314            (keymapp (cdr (cdr (car submap))))
 315            (progn
 316              (x-popup-menu nil (cdr (cdr (car submap))))
 317              (if purify-flag
 318                  (garbage-collect))))
 319       (setq submap (cdr submap))))
 320   (setq define-key-rebound-commands t))
 321
 322 (defun command-line ()
 323   (setq command-line-default-directory default-directory)
 324
 325   ;; See if we should import version-control from the environment variable.
 326   (let ((vc (getenv "VERSION_CONTROL")))
 327     (cond ((eq vc nil))                 ;don't do anything if not set
 328           ((or (string= vc "t")
 329                (string= vc "numbered"))
 330            (setq version-control t))
 331           ((or (string= vc "nil")
 332                (string= vc "existing"))
 333            (setq version-control nil))
 334           ((or (string= vc "never")
 335                (string= vc "simple"))
 336            (setq version-control 'never))))
 337
 338   (if (let ((ctype
 339              ;; Use the first of these three envvars that has a nonempty value.
 340              (or (let ((string (getenv "LC_ALL")))
 341                    (and (not (equal string "")) string))
 342                  (let ((string (getenv "LC_CTYPE")))
 343                    (and (not (equal string "")) string))
 344                  (let ((string (getenv "LANG")))
 345                    (and (not (equal string "")) string)))))
 346         (and ctype
 347              (string-match iso-8859-1-locale-regexp ctype)))
 348       (progn
 349         (require 'disp-table)
 350         (standard-display-european t)
 351         (require 'iso-syntax)))
 352
 353   ;;! This has been commented out; I currently find the behavior when
 354   ;;! split-window-keep-point is nil disturbing, but if I can get used
 355   ;;! to it, then it would be better to eliminate the option.
 356   ;;! ;; Choose a good default value for split-window-keep-point.
 357   ;;! (setq split-window-keep-point (> baud-rate 2400))
 358
 359   ;; Read window system's init file if using a window system.
 360   (condition-case error
 361       (if (and window-system (not noninteractive))
 362           (load (concat term-file-prefix
 363                         (symbol-name window-system)
 364                         "-win")
 365                 ;; Every window system should have a startup file;
 366                 ;; barf if we can't find it.
 367                 nil t))
 368     ;; If we can't read it, print the error message and exit.
 369     (error
 370      (princ
 371       (if (eq (car error) 'error)
 372           (apply 'concat (cdr error))
 373         (if (memq 'file-error (get (car error) 'error-conditions))
 374             (format "%s: %s"
 375                      (nth 1 error)
 376                      (mapconcat '(lambda (obj) (prin1-to-string obj t))
 377                                 (cdr (cdr error)) ", "))
 378           (format "%s: %s"
 379                    (get (car error) 'error-message)
 380                    (mapconcat '(lambda (obj) (prin1-to-string obj t))
 381                               (cdr error) ", "))))
 382       'external-debugging-output)
 383      (setq window-system nil)
 384      (kill-emacs)))
 385
 386   (let ((done nil)
 387         (args (cdr command-line-args)))
 388
 389     ;; Figure out which user's init file to load,
 390     ;; either from the environment or from the options.
 391     (setq init-file-user (if noninteractive nil (user-login-name)))
 392     ;; If user has not done su, use current $HOME to find .emacs.
 393     (and init-file-user (string= init-file-user (user-real-login-name))
 394          (setq init-file-user ""))
 395
 396     ;; Process the command-line args, and delete the arguments
 397     ;; processed.  This is consistent with the way main in emacs.c
 398     ;; does things.
 399     (while (and (not done) args)
 400       (let ((longopts '(("--no-init-file") ("--no-site-file") ("--user")
 401                         ("--debug-init") ("--iconic") ("--icon-type")))
 402             (argi (car args))
 403             (argval nil))
 404         (if (string-match "=" argi)
 405             (setq argval (substring argi (match-end 0))
 406                   argi (substring argi 0 (match-beginning 0))))
 407         (let ((completion (try-completion argi longopts)))
 408           (if (eq completion t)
 409               (setq argi (substring argi 1))
 410             (if (stringp completion)
 411                 (let ((elt (assoc completion longopts)))
 412                   (or elt
 413                       (error "Option `%s' is ambiguous" argi))
 414                   (setq argi (substring (car elt) 1)))
 415               (setq argval nil))))
 416         (cond
 417          ((or (string-equal argi "-q")
 418               (string-equal argi "-no-init-file"))
 419           (setq init-file-user nil
 420                 args (cdr args)))
 421          ((or (string-equal argi "-u")
 422               (string-equal argi "-user"))
 423           (or argval
 424               (setq args (cdr args)
 425                     argval (car args)))
 426           (setq init-file-user argval
 427                 argval nil
 428                 args (cdr args)))
 429          ((string-equal argi "-no-site-file")
 430           (setq site-run-file nil
 431                 args (cdr args)))
 432          ((string-equal argi "-debug-init")
 433           (setq init-file-debug t
 434                 args (cdr args)))
 435          ((string-equal argi "-iconic")
 436           (setq initial-frame-alist
 437                 (cons '(visibility . icon) initial-frame-alist))
 438           (setq args (cdr args)))
 439          ((or (string-equal argi "-icon-type")
 440               (string-equal argi "-i")
 441               (string-equal argi "-itype"))
 442           (setq default-frame-alist
 443                 (cons '(icon-type . t) default-frame-alist))
 444           (setq args (cdr args)))
 445          (t (setq done t)))
 446         ;; Was argval set but not used?
 447         (and argval
 448              (error "Option `%s' doesn't allow an argument" argi))))
 449
 450     ;; Re-attach the program name to the front of the arg list.
 451     (and command-line-args (setcdr command-line-args args)))
 452
 453   ;; Under X Windows, this creates the X frame and deletes the terminal frame.
 454   (if (fboundp 'face-initialize)
 455       (face-initialize))
 456   (if (fboundp 'frame-initialize)
 457       (frame-initialize))
 458   ;; If frame was created with a menu bar, set menu-bar-mode on.
 459   (if (or (not (eq window-system 'x))
 460           (> (cdr (assq 'menu-bar-lines (frame-parameters))) 0))
 461       (menu-bar-mode t))
 462
 463   (run-hooks 'before-init-hook)
 464
 465   ;; Run the site-start library if it exists.  The point of this file is
 466   ;; that it is run before .emacs.  There is no point in doing this after
 467   ;; .emacs; that is useless.
 468   (if site-run-file
 469       (load site-run-file t t))
 470
 471   ;; Sites should not disable this.  Only individuals should disable
 472   ;; the startup message.
 473   (setq inhibit-startup-message nil)
 474
 475   ;; Load that user's init file, or the default one, or none.
 476   (let (debug-on-error-from-init-file
 477         debug-on-error-should-be-set
 478         (debug-on-error-initial
 479          (if (eq init-file-debug t) 'startup init-file-debug)))
 480     (let ((debug-on-error debug-on-error-initial)
 481           ;; This function actually reads the init files.
 482           (inner
 483            (function
 484             (lambda ()
 485               (if init-file-user
 486                   (progn
 487                     (setq user-init-file
 488                           (cond
 489                            ((eq system-type 'ms-dos)
 490                             (concat "~" init-file-user "/_emacs"))
 491                            ((eq system-type 'windows-nt)
 492                             "~/_emacs")
 493                            ((eq system-type 'vax-vms)
 494                             "sys$login:.emacs")
 495                            (t
 496                             (concat "~" init-file-user "/.emacs"))))
 497                     (load user-init-file t t t)
 498                     (or inhibit-default-init
 499                         (let ((inhibit-startup-message nil))
 500                           ;; Users are supposed to be told their rights.
 501                           ;; (Plus how to get help and how to undo.)
 502                           ;; Don't you dare turn this off for anyone
 503                           ;; except yourself.
 504                           (load "default" t t)))))))))
 505       (if init-file-debug
 506           ;; Do this without a condition-case if the user wants to debug.
 507           (funcall inner)
 508         (condition-case error
 509             (progn
 510               (funcall inner)
 511               (setq init-file-had-error nil))
 512           (error (message "Error in init file: %s%s%s"
 513                           (get (car error) 'error-message)
 514                           (if (cdr error) ": " "")
 515                           (mapconcat 'prin1-to-string (cdr error) ", "))
 516                  (setq init-file-had-error t))))
 517       ;; If we can tell that the init file altered debug-on-error,
 518       ;; arrange to preserve the value that it set up.
 519       (or (eq debug-on-error debug-on-error-initial)
 520           (setq debug-on-error-should-be-set t
 521                 debug-on-error-from-init-file debug-on-error)))
 522     (if debug-on-error-should-be-set
 523         (setq debug-on-error debug-on-error-from-init-file)))
 524
 525   ;; Do this here in case the init file sets mail-host-address.
 526   (or user-mail-address
 527       (setq user-mail-address (concat (user-login-name) "@"
 528                                       (or mail-host-address
 529                                           (system-name)))))
 530
 531   (run-hooks 'after-init-hook)
 532
 533   ;; If *scratch* exists and init file didn't change its mode, initialize it.
 534   (if (get-buffer "*scratch*")
 535       (save-excursion
 536         (set-buffer "*scratch*")
 537         (if (eq major-mode 'fundamental-mode)
 538             (funcall initial-major-mode))))
 539   ;; Load library for our terminal type.
 540   ;; User init file can set term-file-prefix to nil to prevent this.
 541   (and term-file-prefix (not noninteractive) (not window-system)
 542        (let ((term (getenv "TERM"))
 543              hyphend)
 544          (while (and term
 545                      (not (load (concat term-file-prefix term) t t)))
 546            ;; Strip off last hyphen and what follows, then try again
 547            (if (setq hyphend (string-match "[-_][^-_]+$" term))
 548                (setq term (substring term 0 hyphend))
 549              (setq term nil)))))
 550
 551   ;; Process the remaining args.
 552   (command-line-1 (cdr command-line-args))
 553
 554   ;; If -batch, terminate after processing the command options.
 555   (if noninteractive (kill-emacs t)))
 556
 557 (defun command-line-1 (command-line-args-left)
 558   (or noninteractive (input-pending-p) init-file-had-error
 559       (and inhibit-startup-echo-area-message
 560            (let ((buffer (get-buffer-create " *temp*")))
 561              (prog1
 562                  (condition-case nil
 563                      (save-excursion
 564                        (set-buffer buffer)
 565                        (insert-file-contents user-init-file)
 566                        (re-search-forward
 567                         (concat
 568                          "([ \t\n]*setq[ \t\n]+"
 569                          "inhibit-startup-echo-area-message[ \t\n]+"
 570                          (regexp-quote
 571                           (prin1-to-string
 572                            (if (string= init-file-user "")
 573                                (user-login-name)
 574                              init-file-user)))
 575                          "[ \t\n]*)")
 576                         nil t))
 577                    (error nil))
 578                (kill-buffer buffer))))
 579       (message (if (eq (key-binding "\C-h\C-p") 'describe-project)
 580                    "For information about the GNU Project and its goals, type C-h C-p."
 581                  (substitute-command-keys
 582                   "For information about the GNU Project and its goals, type \\[describe-project]."))))
 583   (if (null command-line-args-left)
 584       (cond ((and (not inhibit-startup-message) (not noninteractive)
 585                   ;; Don't clobber a non-scratch buffer if init file
 586                   ;; has selected it.
 587                   (string= (buffer-name) "*scratch*")
 588                   (not (input-pending-p)))
 589              ;; If there are no switches to process, we might as well
 590              ;; run this hook now, and there may be some need to do it
 591              ;; before doing any output.
 592              (and term-setup-hook
 593                   (run-hooks 'term-setup-hook))
 594              ;; Don't let the hook be run twice.
 595              (setq term-setup-hook nil)
 596
 597              ;; It's important to notice the user settings before we
 598              ;; display the startup message; otherwise, the settings
 599              ;; won't take effect until the user gives the first
 600              ;; keystroke, and that's distracting.
 601              (if (fboundp 'frame-notice-user-settings)
 602                  (frame-notice-user-settings))
 603
 604              (and window-setup-hook
 605                   (run-hooks 'window-setup-hook))
 606              (setq window-setup-hook nil)
 607              ;; Do this now to avoid an annoying delay if the user
 608              ;; clicks the menu bar during the sit-for.
 609              (if (eq window-system 'x)
 610                  (precompute-menubar-bindings))
 611              (setq menubar-bindings-done t)
 612              (unwind-protect
 613                  (progn
 614                    (insert (emacs-version)
 615                            "
 616 Copyright (C) 1995 Free Software Foundation, Inc.\n\n")
 617                    ;; If keys have their default meanings,
 618                    ;; use precomputed string to save lots of time.
 619                    (if (and (eq (key-binding "\C-h") 'help-command)
 620                             (eq (key-binding "\C-xu") 'advertised-undo)
 621                             (eq (key-binding "\C-x\C-c") 'save-buffers-kill-emacs)
 622                             (eq (key-binding "\C-ht") 'help-with-tutorial)
 623                             (eq (key-binding "\C-hi") 'info))
 624                        (insert
 625        "Type C-h for help; C-x u to undo changes.  (`C-' means use CTRL key.)
 626 To kill the Emacs job, type C-x C-c.
 627 Type C-h t for a tutorial on using Emacs.
 628 Type C-h i to enter Info, which you can use to read GNU documentation.")
 629                      (insert (substitute-command-keys
 630                               (format "Type %s for help; \\[advertised-undo] to undo changes.  (`C-' means use CTRL key.)
 631 To kill the Emacs job, type \\[save-buffers-kill-emacs].
 632 Type \\[help-with-tutorial] for a tutorial on using Emacs.
 633 Type \\[info] to enter Info, which you can use to read GNU documentation."
 634                                       (let ((where (where-is-internal
 635                                                     'help-command nil t)))
 636                                         (if where
 637                                             (key-description where)
 638                                           "M-x help"))))))
 639                    ;; Say how to use the menu bar
 640                    ;; if that is not with the mouse.
 641                    (if (not (assq 'display (frame-parameters)))
 642                        (if (eq (key-binding "\M-`") 'tmm-menubar)
 643                            (insert "\n\nType M-` to use the menu bar.")
 644                          (insert (substitute-command-keys
 645                                   "\n\nType \\[tmm-menubar] to use the menu bar."))))
 646
 647                    ;; Windows and MSDOS (currently) do not count as
 648                    ;; window systems, but do have mouse support.
 649                    (if (or (memq system-type '(msdos windowsnt))
 650                            window-system)
 651                        (insert "
 652 C-mouse-3 (third mouse button, with Control) gets a mode-specific menu."))
 653                    (insert "\n")
 654                    (if (and (eq (key-binding "\C-h\C-c") 'describe-copying)
 655                             (eq (key-binding "\C-h\C-d") 'describe-distribution)
 656                             (eq (key-binding "\C-h\C-w") 'describe-no-warranty))
 657                        (insert
 658                         "
 659 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type C-h C-w for full details.
 660 You may give out copies of Emacs; type C-h C-c to see the conditions.
 661 Type C-h C-d for information on getting the latest version.")
 662                      (insert (substitute-command-keys
 663                               "
 664 GNU Emacs comes with ABSOLUTELY NO WARRANTY; type \\[describe-no-warranty] for full details.
 665 You may give out copies of Emacs; type \\[describe-copying] to see the conditions.
 666 Type \\[describe-distribution] for information on getting the latest version.")))
 667
 668                    (if (directory-files "~/" nil "\\`\\.saves-" t)
 669                        (insert "\n\nIf an Emacs session crashed recently,\n"
 670                                "type M-x recover-session RET to recover"
 671                                " the files you were editing."))
 672
 673                    (set-buffer-modified-p nil)
 674                    (sit-for 120))
 675                (save-excursion
 676                  ;; In case the Emacs server has already selected
 677                  ;; another buffer, erase the one our message is in.
 678                  (set-buffer (get-buffer "*scratch*"))
 679                  (erase-buffer)
 680                  (set-buffer-modified-p nil)))))
 681     ;; Delay 2 seconds after the init file error message
 682     ;; was displayed, so user can read it.
 683     (if init-file-had-error
 684         (sit-for 2))
 685     (let ((dir command-line-default-directory)
 686           (file-count 0)
 687           first-file-buffer
 688           (line 0))
 689       (while command-line-args-left
 690         (let* ((argi (car command-line-args-left))
 691                (orig-argi argi)
 692                ;; This includes our standard options' long versions
 693                ;; and long versions of what's on command-switch-alist.
 694                (longopts
 695                 (append '(("--funcall") ("--load") ("--insert") ("--kill")
 696                           ("--directory") ("--eval"))
 697                         (mapcar '(lambda (elt)
 698                                    (list (concat "-" (car elt))))
 699                                 command-switch-alist)))
 700                tem argval completion
 701                ;; List of directories specified in -L/--directory,
 702                ;; in reverse of the order specified.
 703                extra-load-path
 704                (initial-load-path load-path))
 705           (setq command-line-args-left (cdr command-line-args-left))
 706
 707           ;; Convert long options to ordinary options
 708           ;; and separate out an attached option argument into argval.
 709           (if (string-match "^--[^=]*=" argi)
 710               (setq argval (substring argi (match-end 0))
 711                     argi (substring argi 0 (1- (match-end 0)))))
 712           (setq completion (try-completion argi longopts))
 713           (if (eq completion t)
 714               (setq argi (substring argi 1))
 715             (if (stringp completion)
 716                 (let ((elt (assoc completion longopts)))
 717                   (or elt
 718                       (error "Option `%s' is ambiguous" argi))
 719                   (setq argi (substring (car elt) 1)))
 720               (setq argval nil argi orig-argi)))
 721
 722           ;; Execute the option.
 723           (cond ((setq tem (assoc argi command-switch-alist))
 724                  (if argval
 725                      (let ((command-line-args-left
 726                             (cons argval command-line-args-left)))
 727                        (funcall (cdr tem) argi))
 728                    (funcall (cdr tem) argi)))
 729                 ((or (string-equal argi "-f")  ;what the manual claims
 730                      (string-equal argi "-funcall")
 731                      (string-equal argi "-e")) ; what the source used to say
 732                  (if argval
 733                      (setq tem (intern argval))
 734                    (setq tem (intern (car command-line-args-left)))
 735                    (setq command-line-args-left (cdr command-line-args-left)))
 736                  (if (arrayp (symbol-function tem))
 737                      (command-execute tem)
 738                    (funcall tem)))
 739                 ((string-equal argi "-eval")
 740                  (if argval
 741                      (setq tem argval)
 742                    (setq tem (car command-line-args-left))
 743                    (setq command-line-args-left (cdr command-line-args-left)))
 744                  (eval (read tem)))
 745                 ;; Set the default directory as specified in -L.
 746                 ((or (string-equal argi "-L")
 747                      (string-equal argi "-directory"))
 748                  (if argval
 749                      (setq tem argval)
 750                    (setq tem (car command-line-args-left)
 751                          command-line-args-left (cdr command-line-args-left)))
 752                  (setq extra-load-path
 753                        (cons (expand-file-name tem) extra-load-path))
 754                  (setq load-path (append (nreverse extra-load-path)
 755                                          initial-load-path)))
 756                 ((or (string-equal argi "-l")
 757                      (string-equal argi "-load"))
 758                  (if argval
 759                      (setq tem argval)
 760                    (setq tem (car command-line-args-left)
 761                          command-line-args-left (cdr command-line-args-left)))
 762                  (let ((file tem))
 763                    ;; Take file from default dir if it exists there;
 764                    ;; otherwise let `load' search for it.
 765                    (if (file-exists-p (expand-file-name file))
 766                        (setq file (expand-file-name file)))
 767                    (load file nil t)))
 768                 ((string-equal argi "-insert")
 769                  (if argval
 770                      (setq tem argval)
 771                    (setq tem (car command-line-args-left)
 772                          command-line-args-left (cdr command-line-args-left)))
 773                  (or (stringp tem)
 774                      (error "File name omitted from `-insert' option"))
 775                  (insert-file-contents tem))
 776                 ((string-equal argi "-kill")
 777                  (kill-emacs t))
 778                 ((string-match "^\\+[0-9]+\\'" argi)
 779                  (setq line (string-to-int argi)))
 780                 (t
 781                  ;; We have almost exhausted our options. See if the
 782                  ;; user has made any other command-line options available
 783                  (let ((hooks command-line-functions);; lrs 7/31/89
 784                        (did-hook nil))
 785                    (while (and hooks
 786                                (not (setq did-hook (funcall (car hooks)))))
 787                      (setq hooks (cdr hooks)))
 788                    (if (not did-hook)
 789                        ;; Ok, presume that the argument is a file name
 790                        (progn
 791                          (setq file-count (1+ file-count))
 792                          (cond ((= file-count 1)
 793                                 (setq first-file-buffer
 794                                       (find-file (expand-file-name argi dir))))
 795                                (t
 796                                 (find-file-other-window (expand-file-name argi dir))))
 797                          (or (zerop line)
 798                              (goto-line line))
 799                          (setq line 0))))))))
 800       ;; If 3 or more files visited, and not all visible,
 801       ;; show user what they all are.
 802       (if (> file-count 2)
 803           (or (get-buffer-window first-file-buffer)
 804               (progn (other-window 1)
 805                      (buffer-menu)))))))
 806
 807 ;;; startup.el ends here