lisp/paths.el

   1 ;;; paths.el --- define pathnames for use by various Emacs commands.
   2
   3 ;; Copyright (C) 1986, 1988, 1994, 1999, 2000 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: FSF
   6 ;; Keywords: internal
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; These are default settings for names of certain files and directories
  28 ;; that Emacs needs to refer to from time to time.
  29
  30 ;; If these settings are not right, override them with `setq'
  31 ;; in site-init.el.  Do not change this file.
  32
  33 ;;; Code:
  34
  35 ;; Docstrings in this file should, where reasonable, follow the
  36 ;; conventions described in bindings.el, so that they get put in the
  37 ;; DOC file rather than in memory.
  38
  39 (defun prune-directory-list (dirs &optional keep reject)
  40   "Returns a copy of DIRS with all non-existant directories removed.
  41 The optional argument KEEP is a list of directories to retain even if
  42 they don't exist, and REJECT is a list of directories to remove from
  43 DIRS, even if they exist; REJECT takes precedence over KEEP.
  44
  45 Note that membership in REJECT and KEEP is checked using simple string
  46 comparision."
  47   (apply #'nconc
  48          (mapcar (lambda (dir)
  49                    (and (not (member dir reject))
  50                         (or (member dir keep) (file-directory-p dir))
  51                         (list dir)))
  52                     dirs)))
  53
  54 (defvar Info-default-directory-list
  55   (let* ((config
  56           (list (file-name-as-directory configure-info-directory)))
  57          (unpruned-prefixes
  58           ;; Directory trees that may not exist at installation time, and
  59           ;; so shouldn't be pruned based on existance.
  60           '("/usr/local/"))
  61          (prefixes
  62           ;; Directory trees in which to look for info subdirectories
  63           (prune-directory-list '("/usr/local/" "/usr/" "/opt/" "/")
  64                                 unpruned-prefixes))
  65          (suffixes
  66           ;; Subdirectories in each directory tree that may contain info
  67           ;; directories.
  68           '("" "share/" "gnu/" "gnu/lib/" "gnu/lib/emacs/"
  69             "emacs/" "lib/" "lib/emacs/")))
  70     (nconc
  71      (apply #'nconc
  72             (mapcar (lambda (pfx)
  73                       (let ((dirs
  74                              (mapcar (lambda (sfx) (concat pfx sfx "info/"))
  75                                      suffixes)))
  76                         (if (member pfx unpruned-prefixes)
  77                             dirs
  78                           (prune-directory-list dirs config))))
  79                     prefixes))
  80      config))
  81   "Default list of directories to search for Info documentation files.
  82 They are searched in the order they are given in the list.
  83 Therefore, the directory of Info files that come with Emacs
  84 normally should come last (so that local files override standard ones).
  85
  86 Once Info is started, the list of directories to search
  87 comes from the variable `Info-directory-list'.
  88 This variable `Info-default-directory-list' is used as the default
  89 for initializing `Info-directory-list' when Info is started, unless
  90 the environment variable INFOPATH is set.")
  91
  92 (defvar news-path
  93   (if (file-exists-p "/usr/spool/news/")
  94       "/usr/spool/news/"
  95     "/var/spool/news/")
  96   "The root directory below which all news files are stored.")
  97
  98 (defvar news-inews-program
  99   (cond ((file-exists-p "/usr/bin/inews") "/usr/bin/inews")
 100         ((file-exists-p "/usr/local/inews") "/usr/local/inews")
 101         ((file-exists-p "/usr/local/bin/inews") "/usr/local/bin/inews")
 102         ((file-exists-p "/usr/contrib/lib/news/inews") "/usr/contrib/lib/news/inews")
 103         ((file-exists-p "/usr/lib/news/inews") "/usr/lib/news/inews")
 104         (t "inews"))
 105   "Program to post news.")
 106
 107 ;; set this to your local server
 108 (defvar gnus-default-nntp-server "" "\
 109 The name of the host running an NNTP server.
 110 The null string means use the local host as the server site.")
 111
 112 (defvar gnus-nntp-service "nntp"
 113   "NNTP service name, usually \"nntp\" or 119).
 114 Go to a local news spool if its value is nil, in which case `gnus-nntp-server'
 115 should be set to `(system-name)'.")
 116
 117 (defvar gnus-local-organization nil "\
 118 *The name of your organization, as a string.
 119 The `ORGANIZATION' environment variable is used instead if defined.")
 120
 121 (defvar gnus-startup-file "~/.newsrc" "\
 122 The file listing groups to which user is subscribed.
 123 Will use `gnus-startup-file'-SERVER instead if exists.")
 124
 125 (defcustom rmail-file-name "~/RMAIL"
 126   "*Name of user's primary mail file."
 127   :type 'string
 128   :group 'rmail
 129   :version "21.1")
 130
 131 (defconst rmail-spool-directory
 132   (cond ((string-match "^[^-]+-[^-]+-sco3.2v4" system-configuration)
 133          "/usr/spool/mail/")
 134         ;; On The Bull DPX/2 /usr/spool/mail is used although
 135         ;; it is usg-unix-v.
 136         ((string-match "^m68k-bull-sysv3" system-configuration)
 137          "/usr/spool/mail/")
 138         ;; SVR4 and recent BSD are said to use this.
 139         ;; Rather than trying to know precisely which systems use it,
 140         ;; let's assume this dir is never used for anything else.
 141         ((file-exists-p "/var/mail")
 142          "/var/mail/")
 143         ;; Many GNU/Linux systems use this name.
 144         ((file-exists-p "/var/spool/mail")
 145          "/var/spool/mail/")
 146         ((memq system-type '(dgux hpux usg-unix-v unisoft-unix rtu irix))
 147          "/usr/mail/")
 148         (t "/usr/spool/mail/"))
 149   "Name of directory used by system mailer for delivering new mail.
 150 Its name should end with a slash.")
 151
 152 (defconst sendmail-program
 153   (cond
 154     ((file-exists-p "/usr/sbin/sendmail") "/usr/sbin/sendmail")
 155     ((file-exists-p "/usr/lib/sendmail") "/usr/lib/sendmail")
 156     ((file-exists-p "/usr/ucblib/sendmail") "/usr/ucblib/sendmail")
 157     (t "fakemail"))                     ;In ../etc, to interface to /bin/mail.
 158   "Program used to send messages.")
 159
 160 (defconst remote-shell-program
 161   (cond
 162    ;; Some systems use rsh for the remote shell; others use that name for the
 163    ;; restricted shell and use remsh for the remote shell.  Let's try to guess
 164    ;; based on what we actually find out there.  The restricted shell is
 165    ;; almost certainly in /bin or /usr/bin, so it's probably safe to assume
 166    ;; that an rsh found elsewhere is the remote shell program.  The converse
 167    ;; is not true: /usr/bin/rsh could be either one, so check that last.
 168    ((file-exists-p "/usr/ucb/remsh") "/usr/ucb/remsh")
 169    ((file-exists-p "/usr/bsd/remsh") "/usr/bsd/remsh")
 170    ((file-exists-p "/bin/remsh") "/bin/remsh")
 171    ((file-exists-p "/usr/bin/remsh") "/usr/bin/remsh")
 172    ((file-exists-p "/usr/local/bin/remsh") "/usr/local/bin/remsh")
 173    ((file-exists-p "/usr/ucb/rsh") "/usr/ucb/rsh")
 174    ((file-exists-p "/usr/bsd/rsh") "/usr/bsd/rsh")
 175    ((file-exists-p "/usr/local/bin/rsh") "/usr/local/bin/rsh")
 176    ((file-exists-p "/usr/bin/rcmd") "/usr/bin/rcmd")
 177    ((file-exists-p "/bin/rcmd") "/bin/rcmd")
 178    ((file-exists-p "/bin/rsh") "/bin/rsh")
 179    ((file-exists-p "/usr/bin/rsh") "/usr/bin/rsh")
 180    (t "rsh")))
 181
 182 (defconst term-file-prefix (if (eq system-type 'vax-vms) "[.term]" "term/") "\
 183 If non-nil, Emacs startup does (load (concat term-file-prefix (getenv \"TERM\")))
 184 You may set this variable to nil in your `.emacs' file if you do not wish
 185 the terminal-initialization file to be loaded.")
 186
 187 (defconst abbrev-file-name
 188   (if (eq system-type 'vax-vms)
 189       "~/abbrev.def"
 190     (convert-standard-filename "~/.abbrev_defs"))
 191   "*Default name of file to read abbrevs from.")
 192
 193 ;;; paths.el ends here