mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-23 10:34:07 +00:00
494 lines
19 KiB
EmacsLisp
494 lines
19 KiB
EmacsLisp
;;; startup.el --- process Emacs shell arguments
|
|
|
|
;; Copyright (C) 1985, 1986, 1992, 1994 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 message.
|
|
This is for use in your personal init file, once you are familiar
|
|
with the contents of the startup message.")
|
|
|
|
(defconst inhibit-startup-echo-area-message nil
|
|
"*Non-nil inhibits the initial startup echo area message.
|
|
Inhibition takes effect only if your `.emacs' file contains
|
|
a line of the form
|
|
(setq inhibit-startup-echo-area-message \"YOUR-USER-NAME\")
|
|
Thus, someone else using a copy of your `.emacs' file will see
|
|
the startup message unless he personally acts to inhibit it.")
|
|
|
|
(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 command-line-default-directory nil
|
|
"Default directory to use for command line arguments.
|
|
This is normally copied from `default-directory' when Emacs starts.")
|
|
|
|
(defvar before-init-hook nil
|
|
"Functions to call after handling urgent options but before init files.
|
|
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
|
|
"Normal hook run to initialize window system display.
|
|
Emacs runs this hook after processing the command line arguments and loading
|
|
the user's init file.")
|
|
|
|
(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 is nil if no init file is being used; otherwise, it may be either
|
|
the null string, meaning that the init file was taken from the user that
|
|
originally logged in, or it may be a string containing a user's name.
|
|
|
|
In either of the latter cases, `(concat \"~\" init-file-user \"/\")'
|
|
evaluates to the name of the directory where the `.emacs' file was
|
|
looked for.")
|
|
|
|
(defvar site-run-file "site-start"
|
|
"File containing site-wide run-time initializations.
|
|
This file is loaded at run-time before `~/.emacs'. It contains inits
|
|
that need to be in place for the entire site, but which, due to their
|
|
higher incidence of change, don't make sense to load into emacs'
|
|
dumped image. Thus, the run-time load order is: 1. file described in
|
|
this variable, if non-nil; 2. `~/.emacs'; 3. `default.el'.")
|
|
|
|
(defvar init-file-debug nil)
|
|
|
|
(defvar init-file-had-error 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)
|
|
;; Do this again, in case .emacs defined more abbreviations.
|
|
(setq default-directory (abbreviate-file-name default-directory))
|
|
(run-hooks 'emacs-startup-hook)
|
|
(and term-setup-hook
|
|
(run-hooks 'term-setup-hook))
|
|
;; Modify the initial frame based on what .emacs puts into
|
|
;; ...-frame-alist.
|
|
(if (fboundp 'frame-notice-user-settings)
|
|
(frame-notice-user-settings))
|
|
;; Now we know the user's default font, so add it to the menu.
|
|
(if (fboundp 'font-menu-add-default)
|
|
(font-menu-add-default))
|
|
(and window-setup-hook
|
|
(run-hooks 'window-setup-hook)))))
|
|
|
|
(defun command-line ()
|
|
(setq command-line-default-directory default-directory)
|
|
|
|
;; 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 "-no-site-file")
|
|
(setq site-run-file nil
|
|
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 'face-initialize)
|
|
(face-initialize))
|
|
(if (fboundp 'frame-initialize)
|
|
(frame-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.
|
|
(if site-run-file
|
|
(load site-run-file t t))
|
|
|
|
;; Sites should not disable this. Only individuals should disable
|
|
;; the startup message.
|
|
(setq inhibit-startup-message nil)
|
|
|
|
;; Load that user's init file, or the default one, or none.
|
|
(let (debug-on-error-from-init-file
|
|
debug-on-error-should-be-set
|
|
(debug-on-error-initial
|
|
(if (eq init-file-debug t) 'startup init-file-debug)))
|
|
(let ((debug-on-error debug-on-error-initial)
|
|
;; This function actually reads the init files.
|
|
(inner
|
|
(function
|
|
(lambda ()
|
|
(if init-file-user
|
|
(progn
|
|
(setq user-init-file
|
|
(cond
|
|
((eq system-type 'ms-dos)
|
|
(concat "~" init-file-user "/_emacs"))
|
|
((eq system-type 'vax-vms)
|
|
"sys$login:.emacs")
|
|
(t
|
|
(concat "~" init-file-user "/.emacs"))))
|
|
(load user-init-file 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
|
|
(progn
|
|
(funcall inner)
|
|
(setq init-file-had-error nil))
|
|
(error (message "Error in init file: %s%s%s"
|
|
(get (car error) 'error-message)
|
|
(if (cdr error) ": " "")
|
|
(mapconcat 'prin1-to-string (cdr error) ", "))
|
|
(setq init-file-had-error t))))
|
|
;; If we can tell that the init file altered debug-on-error,
|
|
;; arrange to preserve the value that it set up.
|
|
(or (eq debug-on-error debug-on-error-initial)
|
|
(setq debug-on-error-should-be-set t
|
|
debug-on-error-from-init-file debug-on-error)))
|
|
(if debug-on-error-should-be-set
|
|
(setq debug-on-error debug-on-error-from-init-file)))
|
|
|
|
(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)
|
|
(or noninteractive (input-pending-p) init-file-had-error
|
|
(and inhibit-startup-echo-area-message
|
|
(let ((buffer (get-buffer-create " *temp*")))
|
|
(prog1
|
|
(condition-case nil
|
|
(save-excursion
|
|
(set-buffer buffer)
|
|
(insert-file-contents user-init-file)
|
|
(re-search-forward
|
|
(concat
|
|
"([ \t\n]*setq[ \t\n]+"
|
|
"inhibit-startup-echo-area-message[ \t\n]+"
|
|
(regexp-quote
|
|
(prin1-to-string
|
|
(if (string= init-file-user "")
|
|
(user-login-name)
|
|
init-file-user)))
|
|
"[ \t\n]*)")
|
|
nil t))
|
|
(error nil))
|
|
(kill-buffer buffer))))
|
|
(message (if (eq (key-binding "\C-h\C-p") 'describe-project)
|
|
"For information about the GNU Project and its goals, type C-h C-p."
|
|
(substitute-command-keys
|
|
"For information about the GNU Project and its goals, type \\[describe-project]."))))
|
|
(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) 1994 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 command-line-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
|