*** empty log message ***

[gnu-emacs] / lisp / paths.el

diff --git a/lisp/paths.el b/lisp/paths.el
index f4748f969211811c794279c9603414d47c3f1695..e3fac711b43b6ad82b0dfc2e4cf40f8b75752ea8 100644 (file)
--- a/lisp/paths.el
+++ b/lisp/paths.el
@@ -1,6 +1,6 @@
-;;; paths.el --- define pathnames for use by various Emacs commands.
+;;; paths.el --- define pathnames for use by various Emacs commands -*- no-byte-compile: t -*-

 
 

-;; Copyright (C) 1986, 1988, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1986, 1988, 1994, 1999, 2000 Free Software Foundation, Inc.

 
 ;; Maintainer: FSF
 ;; Keywords: internal
 
 ;; Maintainer: FSF
 ;; Keywords: internal


@@ -18,8 +18,9 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
 ;; 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.
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.

 
 ;;; Commentary:
 
 
 ;;; Commentary:
 


@@ -31,90 +32,177 @@
 
 ;;; Code:
 
 
 ;;; Code:
 

+;; 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.
+
+(defun prune-directory-list (dirs &optional keep reject)
+  "Returns a copy of DIRS with all non-existant directories removed.
+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
+comparision."
+  (apply #'nconc
+        (mapcar (lambda (dir)
+                  (and (not (member dir reject))
+                       (or (member dir keep) (file-directory-p dir))
+                       (list dir)))
+                   dirs)))
+

 (defvar Info-default-directory-list
 (defvar Info-default-directory-list

-  (let ((start (list "/usr/local/info/"
-                    "/usr/local/lib/info/"))
-       (configdir (file-name-as-directory configure-info-directory)))
-    (or (member configdir start)
-       (setq start (nconc start (list configdir))))
-    (or (member (expand-file-name "../info/" data-directory) start)
-       (setq start
-             (nconc start
-                    (list (expand-file-name "../info/" data-directory)))))
-    start)
-  "List of directories to search for Info documentation files.
-They are searched in the order they are given in this list.
+  (let* ((config-dir
+         (file-name-as-directory configure-info-directory))
+        (config
+         (list config-dir))
+        (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/"
+           "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)
+       (nconc standard-info-dirs config)
+      (cons config-dir standard-info-dirs)))
+  "Default list of directories to search for Info documentation files.
+They are searched in the order they are given in the list.

 Therefore, the directory of Info files that come with Emacs
 Therefore, the directory of Info files that come with Emacs

-normally should come last (so that local files override standard ones).")
-
-(defvar news-path "/usr/spool/news/"
+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.
+
+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
+for initializing `Info-directory-list' when Info is started, unless
+the environment variable INFOPATH is set.")
+
+(defvar news-directory
+  (if (file-exists-p "/usr/spool/news/")
+      "/usr/spool/news/"
+    "/var/spool/news/")

   "The root directory below which all news files are stored.")
   "The root directory below which all news files are stored.")

+(defvaralias 'news-path 'news-directory)

 
 (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")
 
 (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")

+       ((file-exists-p "/usr/contrib/lib/news/inews") "/usr/contrib/lib/news/inews")

        ((file-exists-p "/usr/lib/news/inews") "/usr/lib/news/inews")
        (t "inews"))
   "Program to post news.")
 
        ((file-exists-p "/usr/lib/news/inews") "/usr/lib/news/inews")
        (t "inews"))
   "Program to post news.")
 

-(defvar gnus-default-nntp-server ""
-  ;; set this to your local server
-  "The name of the host running an NNTP server.
-If it is a string such as \":DIRECTORY\", then ~/DIRECTORY
-is used as a news spool.  `gnus-nntp-server' is initialised from NNTPSERVER
-environment variable or, if none, this value.")
+;; set this to your local server
+(defvar gnus-default-nntp-server "" "\
+The name of the host running an NNTP server.
+The null string means use the local host as the server site.")

 
 (defvar gnus-nntp-service "nntp"
   "NNTP service name, usually \"nntp\" or 119).
 Go to a local news spool if its value is nil, in which case `gnus-nntp-server'
 should be set to `(system-name)'.")
 
 
 (defvar gnus-nntp-service "nntp"
   "NNTP service name, usually \"nntp\" or 119).
 Go to a local news spool if its value is nil, in which case `gnus-nntp-server'
 should be set to `(system-name)'.")
 

-(defvar gnus-local-domain nil
-  "*Your domain name without a host name: for example, \"ai.mit.edu\".
-The DOMAINNAME environment variable is used instead if defined.
-If the function `system-name' returns a fully qualified domain name,
-there is no need to set this variable.")
-
-(defvar gnus-local-organization nil
-  "*The name of your organization, as a string.
+(defvar gnus-local-organization nil "\
+*The name of your organization, as a string.

 The `ORGANIZATION' environment variable is used instead if defined.")
 
 The `ORGANIZATION' environment variable is used instead if defined.")
 

-(defvar gnus-startup-file "~/.newsrc"
-  "The file listing groups to which user is subscribed.
-Will use `gnus-startup-file'-SERVER instead if exists.")
+(defcustom rmail-file-name "~/RMAIL"
+  "*Name of user's primary mail file."
+  :type 'string
+  :group 'rmail
+  :version "21.1")

 
 

-(defvar rmail-file-name "~/RMAIL"
-  "Name of user's primary mail file.")
-
-(defconst rmail-spool-directory
+(defvar rmail-spool-directory

   (cond ((string-match "^[^-]+-[^-]+-sco3.2v4" system-configuration)
         "/usr/spool/mail/")
   (cond ((string-match "^[^-]+-[^-]+-sco3.2v4" system-configuration)
         "/usr/spool/mail/")

+       ;; On The Bull DPX/2 /usr/spool/mail is used although
+       ;; it is usg-unix-v.
+       ((string-match "^m68k-bull-sysv3" system-configuration)
+        "/usr/spool/mail/")
+       ;; 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")
+        "/var/mail/")
+       ;; Many GNU/Linux systems use this name.
+       ((file-exists-p "/var/spool/mail")
+        "/var/spool/mail/")

        ((memq system-type '(dgux hpux usg-unix-v unisoft-unix rtu irix))
         "/usr/mail/")
        ((memq system-type '(dgux hpux usg-unix-v unisoft-unix rtu irix))
         "/usr/mail/")

-       ((eq system-type 'netbsd)
-        "/var/mail/")

        (t "/usr/spool/mail/"))
   "Name of directory used by system mailer for delivering new mail.
 Its name should end with a slash.")
 
        (t "/usr/spool/mail/"))
   "Name of directory used by system mailer for delivering new mail.
 Its name should end with a slash.")
 

-(defconst sendmail-program
+(defcustom sendmail-program

   (cond
   (cond

-    ((file-exists-p "/usr/lib/sendmail") "/usr/lib/sendmail")

     ((file-exists-p "/usr/sbin/sendmail") "/usr/sbin/sendmail")
     ((file-exists-p "/usr/sbin/sendmail") "/usr/sbin/sendmail")

+    ((file-exists-p "/usr/lib/sendmail") "/usr/lib/sendmail")

     ((file-exists-p "/usr/ucblib/sendmail") "/usr/ucblib/sendmail")
     (t "fakemail"))                    ;In ../etc, to interface to /bin/mail.
     ((file-exists-p "/usr/ucblib/sendmail") "/usr/ucblib/sendmail")
     (t "fakemail"))                    ;In ../etc, to interface to /bin/mail.

-  "Program used to send messages.")
+  "Program used to send messages."
+  :group 'mail
+  :type 'file)

 
 

-(defconst term-file-prefix (if (eq system-type 'vax-vms) "[.term]" "term/")
-  "If non-nil, Emacs startup does (load (concat term-file-prefix (getenv \"TERM\")))
+(defcustom remote-shell-program
+  (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
+   ;; 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.
+   ((file-exists-p "/usr/ucb/remsh") "/usr/ucb/remsh")
+   ((file-exists-p "/usr/bsd/remsh") "/usr/bsd/remsh")
+   ((file-exists-p "/bin/remsh") "/bin/remsh")
+   ((file-exists-p "/usr/bin/remsh") "/usr/bin/remsh")
+   ((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")
+   ((file-exists-p "/usr/local/bin/rsh") "/usr/local/bin/rsh")
+   ((file-exists-p "/usr/bin/rcmd") "/usr/bin/rcmd")
+   ((file-exists-p "/bin/rcmd") "/bin/rcmd")
+   ((file-exists-p "/bin/rsh") "/bin/rsh")
+   ((file-exists-p "/usr/bin/rsh") "/usr/bin/rsh")
+   (t "rsh"))
+  "File name for remote-shell program (often rsh or remsh)."
+  :group 'environment
+  :type 'file)
+
+(defvar term-file-prefix (if (eq system-type 'vax-vms) "[.term]" "term/") "\
+If non-nil, Emacs startup does (load (concat term-file-prefix (getenv \"TERM\")))

 You may set this variable to nil in your `.emacs' file if you do not wish
 the terminal-initialization file to be loaded.")
 
 You may set this variable to nil in your `.emacs' file if you do not wish
 the terminal-initialization file to be loaded.")
 

-(defconst abbrev-file-name 
+(defvar abbrev-file-name

   (if (eq system-type 'vax-vms)
       "~/abbrev.def"
   (if (eq system-type 'vax-vms)
       "~/abbrev.def"

-    "~/.abbrev_defs")
+    (convert-standard-filename "~/.abbrev_defs"))

   "*Default name of file to read abbrevs from.")
 
   "*Default name of file to read abbrevs from.")
 

+;;; arch-tag: bae27ffb-9944-4c87-b569-30d4635a99e1

 ;;; paths.el ends here
 ;;; paths.el ends here