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;;; paths.el --- define pathnames for use by various Emacs commands -*- no-byte-compile: t -*-
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;; Copyright (C) 1986, 1988, 1994, 1999, 2000, 2001, 2002, 2003,
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;;   2004, 2005, 2006 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; Keywords: internal
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;; 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
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;; the Free Software Foundation; either version 2, or (at your option)
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;; 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
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;; along with GNU Emacs; see the file COPYING.  If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; These are default settings for names of certain files and directories
;; that Emacs needs to refer to from time to time.

;; If these settings are not right, override them with `setq'
;; in site-init.el.  Do not change this file.

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;;; Code:

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;; Docstrings in this file should, where reasonable, follow the
;; conventions described in bindings.el, so that they get put in the
;; DOC file rather than in memory.

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(defun prune-directory-list (dirs &optional keep reject)
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  "Returns a copy of DIRS with all non-existent directories removed.
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The optional argument KEEP is a list of directories to retain even if
they don't exist, and REJECT is a list of directories to remove from
DIRS, even if they exist; REJECT takes precedence over KEEP.

Note that membership in REJECT and KEEP is checked using simple string
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comparison."
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  (apply #'nconc
	 (mapcar (lambda (dir)
		   (and (not (member dir reject))
			(or (member dir keep) (file-directory-p dir))
			(list dir)))
		    dirs)))

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(defvar Info-default-directory-list
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  (let* ((config-dir
	  (file-name-as-directory configure-info-directory))
	 (config
	  (list config-dir))
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	 (unpruned-prefixes
	  ;; Directory trees that may not exist at installation time, and
	  ;; so shouldn't be pruned based on existance.
	  '("/usr/local/"))
	 (prefixes
	  ;; Directory trees in which to look for info subdirectories
	  (prune-directory-list '("/usr/local/" "/usr/" "/opt/" "/")
				unpruned-prefixes))
	 (suffixes
	  ;; Subdirectories in each directory tree that may contain info
	  ;; directories.
	  '("" "share/" "gnu/" "gnu/lib/" "gnu/lib/emacs/"
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	    "emacs/" "lib/" "lib/emacs/"))
	 (standard-info-dirs
	  (apply #'nconc
		 (mapcar (lambda (pfx)
			   (let ((dirs
				  (mapcar (lambda (sfx)
					    (concat pfx sfx "info/"))
					  suffixes)))
			     (if (member pfx unpruned-prefixes)
				 dirs
			       (prune-directory-list dirs config))))
			 prefixes))))
    ;; If $(prefix)/info is not one of the standard info directories,
    ;; they are probably installing an experimental version of Emacs,
    ;; so make sure that experimental version's Info files override
    ;; the ones in standard directories.
    (if (member config-dir standard-info-dirs)
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	(nconc standard-info-dirs config)
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      (cons config-dir standard-info-dirs)))
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  "Default list of directories to search for Info documentation files.
They are searched in the order they are given in the list.
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Therefore, the directory of Info files that come with Emacs
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normally should come last (so that local files override standard ones),
unless Emacs is installed into a non-standard directory.  In the latter
case, the directory of Info files that come with Emacs should be
first in this list.
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Once Info is started, the list of directories to search
comes from the variable `Info-directory-list'.
This variable `Info-default-directory-list' is used as the default
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for initializing `Info-directory-list' when Info is started, unless
the environment variable INFOPATH is set.")
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(defvar news-directory
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  (if (file-exists-p "/usr/spool/news/")
      "/usr/spool/news/"
    "/var/spool/news/")
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  "The root directory below which all news files are stored.")
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(defvaralias 'news-path 'news-directory)
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(defvar news-inews-program
  (cond ((file-exists-p "/usr/bin/inews") "/usr/bin/inews")
	((file-exists-p "/usr/local/inews") "/usr/local/inews")
	((file-exists-p "/usr/local/bin/inews") "/usr/local/bin/inews")
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	((file-exists-p "/usr/contrib/lib/news/inews") "/usr/contrib/lib/news/inews")
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	((file-exists-p "/usr/lib/news/inews") "/usr/lib/news/inews")
	(t "inews"))
  "Program to post news.")

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;; set this to your local server
(defvar gnus-default-nntp-server "" "\
The name of the host running an NNTP server.
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The null string means use the local host as the server site.")
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(defvar gnus-nntp-service "nntp"
  "NNTP service name, usually \"nntp\" or 119).
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Go to a local news spool if its value is nil, in which case `gnus-nntp-server'
should be set to `(system-name)'.")
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(defvar gnus-local-organization nil "\
*The name of your organization, as a string.
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The `ORGANIZATION' environment variable is used instead if defined.")

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(defcustom rmail-file-name "~/RMAIL"
  "*Name of user's primary mail file."
  :type 'string
  :group 'rmail
  :version "21.1")
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(defvar rmail-spool-directory
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  (cond ((string-match "^[^-]+-[^-]+-sco3.2v4" system-configuration)
	 "/usr/spool/mail/")
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	;; On The Bull DPX/2 /usr/spool/mail is used although
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	;; it is usg-unix-v.
	((string-match "^m68k-bull-sysv3" system-configuration)
	 "/usr/spool/mail/")
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	;; SVR4 and recent BSD are said to use this.
	;; Rather than trying to know precisely which systems use it,
	;; let's assume this dir is never used for anything else.
	((file-exists-p "/var/mail")
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	 "/var/mail/")
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	;; Many GNU/Linux systems use this name.
	((file-exists-p "/var/spool/mail")
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	 "/var/spool/mail/")
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	((memq system-type '(dgux hpux usg-unix-v unisoft-unix rtu irix))
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	 "/usr/mail/")
	(t "/usr/spool/mail/"))
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  "Name of directory used by system mailer for delivering new mail.
Its name should end with a slash.")

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(defcustom remote-shell-program
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  (cond
   ;; Some systems use rsh for the remote shell; others use that name for the
   ;; restricted shell and use remsh for the remote shell.  Let's try to guess
   ;; based on what we actually find out there.  The restricted shell is
   ;; almost certainly in /bin or /usr/bin, so it's probably safe to assume
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   ;; that an rsh found elsewhere is the remote shell program.  The converse
   ;; is not true: /usr/bin/rsh could be either one, so check that last.
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   ((file-exists-p "/usr/ucb/remsh") "/usr/ucb/remsh")
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   ((file-exists-p "/usr/bsd/remsh") "/usr/bsd/remsh")
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   ((file-exists-p "/bin/remsh") "/bin/remsh")
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   ((file-exists-p "/usr/bin/remsh") "/usr/bin/remsh")
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   ((file-exists-p "/usr/local/bin/remsh") "/usr/local/bin/remsh")
   ((file-exists-p "/usr/ucb/rsh") "/usr/ucb/rsh")
   ((file-exists-p "/usr/bsd/rsh") "/usr/bsd/rsh")
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   ((file-exists-p "/usr/local/bin/rsh") "/usr/local/bin/rsh")
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   ((file-exists-p "/usr/bin/rcmd") "/usr/bin/rcmd")
   ((file-exists-p "/bin/rcmd") "/bin/rcmd")
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   ((file-exists-p "/bin/rsh") "/bin/rsh")
   ((file-exists-p "/usr/bin/rsh") "/usr/bin/rsh")
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   (t "rsh"))
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  "File name for remote-shell program (often rsh or remsh)."
  :group 'environment
  :type 'file)
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(defvar term-file-prefix (if (eq system-type 'vax-vms) "[.term]" "term/") "\
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If non-nil, Emacs startup does (load (concat term-file-prefix (getenv \"TERM\")))
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You may set this variable to nil in your `.emacs' file if you do not wish
the terminal-initialization file to be loaded.")

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(defvar abbrev-file-name
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  (if (eq system-type 'vax-vms)
      "~/abbrev.def"
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    (convert-standard-filename "~/.abbrev_defs"))
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  "*Default name of file to read abbrevs from.")
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;;; arch-tag: bae27ffb-9944-4c87-b569-30d4635a99e1
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;;; paths.el ends here