home *** CD-ROM | disk | FTP | other *** search
- ;;; startup.el --- process Emacs shell arguments
-
- ;; Copyright (C) 1985, 1986, 1992 Free Software Foundation, Inc.
-
- ;; Maintainer: FSF
- ;; Keywords: internal
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is free software; you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 2, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to
- ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ;;; Commentary:
-
- ; These are processed only at the beginning of the argument list.
- ; -batch execute noninteractively (messages go to stdout,
- ; variable noninteractive set to t)
- ; This option must be the first in the arglist.
- ; Processed by `main' in emacs.c -- never seen by lisp
- ; -t file Specify to use file rather than stdin/stdout
- ; as the terminal.
- ; This option must be the first in the arglist.
- ; Processed by `main' in emacs.c -- never seen by lisp
- ; -nw Inhibit the use of any window-system-specific display
- ; code; use the current virtual terminal.
- ; This option must be the first in the arglist.
- ; Processed by `main' in emacs.c -- never seen by lisp
- ; -q load no init file
- ; -no-init-file same
- ; -u user load user's init file
- ; -user user same
- ; -debug-init Don't catch errors in init file; let debugger run.
-
- ; These are processed in the order encountered.
- ; -f function execute function
- ; -funcall function same
- ; -l file load file
- ; -load file same
- ; -insert file same
- ; file visit file
- ; -kill kill (exit) emacs
-
- ;;; Code:
-
- (setq top-level '(normal-top-level))
-
- (defvar command-line-processed nil "t once command line has been processed")
-
- (defconst inhibit-startup-message nil
- "*Non-nil inhibits the initial startup messages.
- This is for use in your personal init file, once you are familiar
- with the contents of the startup message.")
-
- (defconst inhibit-default-init nil
- "*Non-nil inhibits loading the `default' library.")
-
- (defconst command-switch-alist nil
- "Alist of command-line switches.
- Elements look like (SWITCH-STRING . HANDLER-FUNCTION).
- HANDLER-FUNCTION receives switch name as sole arg;
- remaining command-line args are in the variable `command-line-args-left'.")
-
- (defvar command-line-functions nil ;; lrs 7/31/89
- "List of functions to process unrecognized command-line arguments.
- Each function should access the dynamically bound variables
- argi (the current argument) and command-line-args-left (the remaining
- arguments). The function should return non-nil only if it recognizes and
- processes argi. If it does so, it may consume successive arguments by
- altering command-line-args-left to remove them.")
-
- (defvar before-init-hook nil
- "Functions to call after handling urgent options but before loading init file.
- The frame system uses this to open frames to display messages while
- Emacs loads the user's initialization file.")
-
- (defvar after-init-hook nil
- "Functions to call after loading the init file (`~/.emacs').
- The call is not protected by a condition-case, so you can set `debug-on-error'
- in `.emacs', and put all the actual code on `after-init-hook'.")
-
- (defvar term-setup-hook nil
- "Functions to be called after loading terminal-specific lisp code.
- See `run-hooks'. This variable exists for users to set,
- so as to override the definitions made by the terminal-specific file.
- Emacs never sets this variable itself.")
-
- (defvar keyboard-type nil
- "The brand of keyboard you are using. This variable is used to define
- the proper function and keypad keys for use under X. It is used in a
- fashion analogous to the environment value TERM.")
-
- (defvar window-setup-hook nil
- "Function called to initialize window system display.
- Emacs calls this after processing the command line arguments and loading
- the user's init file.
-
- Users should not set this variable; use term-setup-hook instead.")
-
- (defconst initial-major-mode 'lisp-interaction-mode
- "Major mode command symbol to use for the initial *scratch* buffer.")
-
- (defvar init-file-user nil
- "Identity of user whose `.emacs' file is or was read.
- The value may be the null string or a string containing a user's name.
- If the value is a null string, it means that the init file was taken from
- the user that originally logged in.
-
- In all cases, `(concat \"~\" init-file-user \"/\")' evaluates to the
- directory name of the directory where the `.emacs' file was looked for.")
-
- (defvar init-file-debug nil)
-
- (defun normal-top-level ()
- (if command-line-processed
- (message "Back to top level.")
- (setq command-line-processed t)
- (if (not (eq system-type 'vax-vms))
- (progn
- ;; If the PWD environment variable isn't accurate, delete it.
- (let ((pwd (getenv "PWD")))
- (and (stringp pwd)
- ;; Use FOO/., so that if FOO is a symlink, file-attributes
- ;; describes the directory linked to, not FOO itself.
- (or (equal (file-attributes
- (concat (file-name-as-directory pwd) "."))
- (file-attributes
- (concat (file-name-as-directory default-directory)
- ".")))
- (setq process-environment
- (delete (concat "PWD=" pwd)
- process-environment)))))))
- (setq default-directory (abbreviate-file-name default-directory))
- (unwind-protect
- (command-line)
- (run-hooks 'emacs-startup-hook)
- (and term-setup-hook
- (run-hooks 'term-setup-hook))
- (if (fboundp 'frame-notice-user-settings)
- (frame-notice-user-settings))
- (and window-setup-hook
- (run-hooks 'window-setup-hook)))))
-
- (defun command-line ()
- ;; See if we should import version-control from the environment variable.
- (let ((vc (getenv "VERSION_CONTROL")))
- (cond ((eq vc nil)) ;don't do anything if not set
- ((or (string= vc "t")
- (string= vc "numbered"))
- (setq version-control t))
- ((or (string= vc "nil")
- (string= vc "existing"))
- (setq version-control nil))
- ((or (string= vc "never")
- (string= vc "simple"))
- (setq version-control 'never))))
-
- ;;! This has been commented out; I currently find the behavior when
- ;;! split-window-keep-point is nil disturbing, but if I can get used
- ;;! to it, then it would be better to eliminate the option.
- ;;! ;; Choose a good default value for split-window-keep-point.
- ;;! (setq split-window-keep-point (> baud-rate 2400))
-
- ;; Read window system's init file if using a window system.
- (if (and window-system (not noninteractive))
- (load (concat term-file-prefix
- (symbol-name window-system)
- "-win")
- ;; Every window system should have a startup file;
- ;; barf if we can't find it.
- nil t))
-
- (let ((done nil)
- (args (cdr command-line-args)))
-
- ;; Figure out which user's init file to load,
- ;; either from the environment or from the options.
- (setq init-file-user (if noninteractive nil (user-login-name)))
- ;; If user has not done su, use current $HOME to find .emacs.
- (and init-file-user (string= init-file-user (user-real-login-name))
- (setq init-file-user ""))
-
- ;; Process the command-line args, and delete the arguments
- ;; processed. This is consistent with the way main in emacs.c
- ;; does things.
- (while (and (not done) args)
- (let ((argi (car args)))
- (cond
- ((or (string-equal argi "-q")
- (string-equal argi "-no-init-file"))
- (setq init-file-user nil
- args (cdr args)))
- ((or (string-equal argi "-u")
- (string-equal argi "-user"))
- (setq args (cdr args)
- init-file-user (car args)
- args (cdr args)))
- ((string-equal argi "-debug-init")
- (setq init-file-debug t
- args (cdr args)))
- (t (setq done t)))))
-
- ;; Re-attach the program name to the front of the arg list.
- (setcdr command-line-args args))
-
- ;; Under X Windows, this creates the X frame and deletes the terminal frame.
- (if (fboundp 'frame-initialize)
- (frame-initialize))
- (if (fboundp 'face-initialize)
- (face-initialize))
-
- (run-hooks 'before-init-hook)
-
- ;; Run the site-start library if it exists. The point of this file is
- ;; that it is run before .emacs. There is no point in doing this after
- ;; .emacs; that is useless.
- (load "site-start" t t)
-
- ;; Load that user's init file, or the default one, or none.
- (let ((debug-on-error init-file-debug)
- ;; This function actually reads the init files.
- (inner
- (function
- (lambda ()
- (if init-file-user
- (progn (load (if (eq system-type 'vax-vms)
- "sys$login:.emacs"
- (concat "~" init-file-user "/.emacs"))
- t t t)
- (or inhibit-default-init
- (let ((inhibit-startup-message nil))
- ;; Users are supposed to be told their rights.
- ;; (Plus how to get help and how to undo.)
- ;; Don't you dare turn this off for anyone
- ;; except yourself.
- (load "default" t t)))))))))
- (if init-file-debug
- ;; Do this without a condition-case if the user wants to debug.
- (funcall inner)
- (condition-case error
- (funcall inner)
- (error (message "Error in init file: %s%s%s"
- (get (car error) 'error-message)
- (if (cdr error) ": ")
- (mapconcat 'prin1-to-string (cdr error) ", "))))))
-
- (run-hooks 'after-init-hook)
-
- ;; If *scratch* exists and init file didn't change its mode, initialize it.
- (if (get-buffer "*scratch*")
- (save-excursion
- (set-buffer "*scratch*")
- (if (eq major-mode 'fundamental-mode)
- (funcall initial-major-mode))))
- ;; Load library for our terminal type.
- ;; User init file can set term-file-prefix to nil to prevent this.
- (and term-file-prefix (not noninteractive) (not window-system)
- (let ((term (getenv "TERM"))
- hyphend)
- (while (and term
- (not (load (concat term-file-prefix term) t t)))
- ;; Strip off last hyphen and what follows, then try again
- (if (setq hyphend (string-match "[-_][^-_]+$" term))
- (setq term (substring term 0 hyphend))
- (setq term nil)))))
-
- ;; Process the remaining args.
- (command-line-1 (cdr command-line-args))
-
- ;; If -batch, terminate after processing the command options.
- (if noninteractive (kill-emacs t)))
-
- (defun command-line-1 (command-line-args-left)
- (if (null command-line-args-left)
- (cond ((and (not inhibit-startup-message) (not noninteractive)
- ;; Don't clobber a non-scratch buffer if init file
- ;; has selected it.
- (string= (buffer-name) "*scratch*")
- (not (input-pending-p)))
- ;; If there are no switches to process, we might as well
- ;; run this hook now, and there may be some need to do it
- ;; before doing any output.
- (and term-setup-hook
- (run-hooks 'term-setup-hook))
- ;; Don't let the hook be run twice.
- (setq term-setup-hook nil)
-
- ;; It's important to notice the user settings before we
- ;; display the startup message; otherwise, the settings
- ;; won't take effect until the user gives the first
- ;; keystroke, and that's distracting.
- (if (fboundp 'frame-notice-user-settings)
- (frame-notice-user-settings))
-
- (and window-setup-hook
- (run-hooks 'window-setup-hook))
- (setq window-setup-hook nil)
- (unwind-protect
- (progn
- (insert (emacs-version)
- "
- Copyright (C) 1993 Free Software Foundation, Inc.\n\n")
- ;; If keys have their default meanings,
- ;; use precomputed string to save lots of time.
- (if (and (eq (key-binding "\C-h") 'help-command)
- (eq (key-binding "\C-xu") 'advertised-undo)
- (eq (key-binding "\C-x\C-c") 'save-buffers-kill-emacs)
- (eq (key-binding "\C-h\C-c") 'describe-copying)
- (eq (key-binding "\C-h\C-d") 'describe-distribution)
- (eq (key-binding "\C-h\C-w") 'describe-no-warranty)
- (eq (key-binding "\C-ht") 'help-with-tutorial))
- (insert
- "Type C-h for help; C-x u to undo changes. (`C-' means use CTRL key.)
- To kill the Emacs job, type C-x C-c.
- Type C-h t for a tutorial on using Emacs.
- Type C-h i to enter Info, which you can use to read GNU documentation.
-
- GNU Emacs comes with ABSOLUTELY NO WARRANTY; type C-h C-w for full details.
- You may give out copies of Emacs; type C-h C-c to see the conditions.
- Type C-h C-d for information on getting the latest version.")
- (insert (substitute-command-keys
- "Type \\[help-command] for help; \\[advertised-undo] to undo changes. (`C-' means use CTRL key.)
- To kill the Emacs job, type \\[save-buffers-kill-emacs].
- Type \\[help-with-tutorial] for a tutorial on using Emacs.
- Type \\[info] to enter Info, which you can use to read GNU documentation.
-
- GNU Emacs comes with ABSOLUTELY NO WARRANTY; type \\[describe-no-warranty] for full details.
- You may give out copies of Emacs; type \\[describe-copying] to see the conditions.
- Type \\[describe-distribution] for information on getting the latest version.")))
- (set-buffer-modified-p nil)
- (sit-for 120))
- (save-excursion
- ;; In case the Emacs server has already selected
- ;; another buffer, erase the one our message is in.
- (set-buffer (get-buffer "*scratch*"))
- (erase-buffer)
- (set-buffer-modified-p nil)))))
- (let ((dir default-directory)
- (file-count 0)
- first-file-buffer
- (line 0))
- (while command-line-args-left
- (let ((argi (car command-line-args-left))
- tem)
- (setq command-line-args-left (cdr command-line-args-left))
- (cond ((setq tem (assoc argi command-switch-alist))
- (funcall (cdr tem) argi))
- ((or (string-equal argi "-f") ;what the manual claims
- (string-equal argi "-funcall")
- (string-equal argi "-e")) ; what the source used to say
- (setq tem (intern (car command-line-args-left)))
- (setq command-line-args-left (cdr command-line-args-left))
- (funcall tem))
- ((or (string-equal argi "-l")
- (string-equal argi "-load"))
- (let ((file (car command-line-args-left)))
- ;; Take file from default dir if it exists there;
- ;; otherwise let `load' search for it.
- (if (file-exists-p (expand-file-name file))
- (setq file (expand-file-name file)))
- (load file nil t))
- (setq command-line-args-left (cdr command-line-args-left)))
- ((string-equal argi "-insert")
- (or (stringp (car command-line-args-left))
- (error "filename omitted from `-insert' option"))
- (insert-file-contents (car command-line-args-left))
- (setq command-line-args-left (cdr command-line-args-left)))
- ((string-equal argi "-kill")
- (kill-emacs t))
- ((string-match "^\\+[0-9]+\\'" argi)
- (setq line (string-to-int argi)))
- (t
- ;; We have almost exhausted our options. See if the
- ;; user has made any other command-line options available
- (let ((hooks command-line-functions);; lrs 7/31/89
- (did-hook nil))
- (while (and hooks
- (not (setq did-hook (funcall (car hooks)))))
- (setq hooks (cdr hooks)))
- (if (not did-hook)
- ;; Ok, presume that the argument is a file name
- (progn
- (setq file-count (1+ file-count))
- (cond ((= file-count 1)
- (setq first-file-buffer
- (find-file (expand-file-name argi dir))))
- (t
- (find-file-other-window (expand-file-name argi dir))))
- (or (zerop line)
- (goto-line line))
- (setq line 0))))))))
- ;; If 3 or more files visited, and not all visible,
- ;; show user what they all are.
- (if (> file-count 2)
- (or (get-buffer-window first-file-buffer)
- (progn (other-window 1)
- (buffer-menu)))))))
-
- ;;; startup.el ends here
-