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;; Process Emacs shell arguments
;; Copyright (C) 1985, 1986 Free Software Foundation, Inc.
;; 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 1, 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.
; 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
; These are processed in the order encountered.
; -f function execute function
; -funcall function same
; -l file load file
; -load file same
; -i file insert file into buffer
; -insert file same
; file visit file
; -kill kill (exit) emacs
(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 term-setup-hook nil
"Function to be called after loading terminal-specific lisp code.
It is called with no arguments. You can use this to override the
definitions made by the terminal-specific file.")
(defvar window-setup-hook nil)
(defconst initial-major-mode 'lisp-interaction-mode
"Major mode command symbol to use for the initial *scratch* buffer.")
(defun normal-top-level ()
(if command-line-processed
(message "Back to top level.")
(setq command-line-processed t)
;; In presence of symlinks, switch to cleaner form of default directory.
(if (and (not (eq system-type 'vax-vms))
(getenv "PWD")
(equal (nthcdr 10 (file-attributes default-directory))
(nthcdr 10 (file-attributes (getenv "PWD")))))
(setq default-directory (file-name-as-directory (getenv "PWD"))))
(unwind-protect
(command-line)
(and term-setup-hook
(funcall term-setup-hook))
(and window-setup-hook
(funcall window-setup-hook)))))
(defun command-line ()
(let ((args (cdr command-line-args))
(init (if noninteractive nil (user-login-name)))
(done nil))
;; If user has not done su, use current $HOME to find .emacs.
(and init (string= init (user-real-login-name))
(setq init ""))
(while (and (not done) args)
(let ((argi (car args)))
(if (or (string-equal argi "-q")
(string-equal argi "-no-init-file"))
(setq init nil
args (cdr args))
(if (or (string-equal argi "-u")
(string-equal argi "-user"))
(setq args (cdr args)
init (car args)
args (cdr args))
(setq done t)))))
;; Load user's init file, or load default one.
(condition-case error
(if init
(progn (load (if (eq system-type 'vax-vms)
"sys$login:.emacs"
(concat "~" init "/.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)))))
(error (message "Error in init file")))
(if (get-buffer "*scratch*")
(save-excursion
(set-buffer "*scratch*")
(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)
(if window-system
(load (concat term-file-prefix
(symbol-name window-system)
"-win")
t t)
(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))))))
(command-line-1 args)
(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 procss, 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
(funcall term-setup-hook))
;; Don't let the hook be run twice.
(setq term-setup-hook nil)
(and window-setup-hook
(funcall window-setup-hook))
(setq window-setup-hook nil)
(unwind-protect
(progn
(insert (emacs-version)
"
Copyright (C) 1990 Free Software Foundation, Inc.\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-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.)
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.
Type C-h t for a tutorial on using Emacs.")
(insert (substitute-command-keys
"Type \\[help-command] for help; \\[advertised-undo] to undo changes. (`C-' means use CTRL key.)
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.
Type \\[help-with-tutorial] for a tutorial on using Emacs.")))
(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)
(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)))
((or (string-equal argi "-i")
(string-equal argi "-insert"))
(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
(find-file (expand-file-name argi dir))
(or (zerop line)
(goto-line line))
(setq line 0))))))))
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