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Diffstat (limited to 'lisp/startup.el')
| -rw-r--r-- | lisp/startup.el | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/lisp/startup.el b/lisp/startup.el new file mode 100644 index 00000000000..ae709d2f000 --- /dev/null +++ b/lisp/startup.el @@ -0,0 +1,238 @@ +;; 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)))))))) |