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[emacs.git] / lisp / paths.el
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1 ;;; paths.el --- define pathnames for use by various Emacs commands.
3 ;; Copyright (C) 1986, 1988, 1994, 1999, 2000 Free Software Foundation, Inc.
5 ;; Maintainer: FSF
6 ;; Keywords: internal
8 ;; This file is part of GNU Emacs.
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.
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.
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.
25 ;;; Commentary:
27 ;; These are default settings for names of certain files and directories
28 ;; that Emacs needs to refer to from time to time.
30 ;; If these settings are not right, override them with `setq'
31 ;; in site-init.el. Do not change this file.
33 ;;; Code:
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.
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.
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)))
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).
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.")
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.")
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.")
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.")
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)'.")
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.")
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.")
125 (defcustom rmail-file-name "~/RMAIL"
126 "*Name of user's primary mail file."
127 :type 'string
128 :group 'rmail
129 :version "21.1")
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.")
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.")
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")))
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.")
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.")
193 ;;; paths.el ends here