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38264cc938
* lisp/w32-fns.el (w32-init-info): Remove. * lisp/paths.el (Info-default-directory-list): Add w32-init-info equivalent.
109 lines
4.3 KiB
EmacsLisp
109 lines
4.3 KiB
EmacsLisp
;;; paths.el --- define pathnames for use by various Emacs commands
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;; Copyright (C) 1986, 1988, 1994, 1999-2012 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; Keywords: internal
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;; Package: emacs
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; These are default settings for names of certain files and directories
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;; that Emacs needs to refer to from time to time.
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;; If these settings are not right, override them with `setq'
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;; in site-init.el. Do not change this file.
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;;; Code:
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;; This is a defcustom largely so that we can get the benefit
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;; of custom-initialize-delay. Perhaps it would work to make it a
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;; defvar and explicitly give it a standard-value property, and
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;; call custom-initialize-delay on it.
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(defcustom Info-default-directory-list
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(let* ((config-dir
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(file-name-as-directory
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;; Self-contained NS build with info/ in the app-bundle.
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(or (and (featurep 'ns)
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(let ((dir (expand-file-name "../info" data-directory)))
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(if (file-directory-p dir) dir)))
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configure-info-directory)))
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(prefixes
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;; Directory trees in which to look for info subdirectories
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(prune-directory-list '("/usr/local/" "/usr/" "/opt/" "/")))
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(suffixes
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;; Subdirectories in each directory tree that may contain info
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;; directories. Most of these are rather outdated.
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;; It ought to be fine to stop checking the "emacs" ones now,
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;; since this is Emacs and we have not installed info files
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;; into such directories for a looong time...
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'("share/" "" "gnu/" "gnu/lib/" "gnu/lib/emacs/"
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"emacs/" "lib/" "lib/emacs/"))
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(standard-info-dirs
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(apply #'nconc
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(mapcar (lambda (pfx)
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(let ((dirs
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(mapcar (lambda (sfx)
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(concat pfx sfx "info/"))
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suffixes)))
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(prune-directory-list dirs)))
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prefixes)))
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;; If $(prefix)/share/info is not one of the standard info
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;; directories, they are probably installing an experimental
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;; version of Emacs, so make sure that experimental version's Info
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;; files override the ones in standard directories.
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(dirs
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(if (member config-dir standard-info-dirs)
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;; FIXME? What is the point of adding it again at the end
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;; when it is already present earlier in the list?
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(nconc standard-info-dirs (list config-dir))
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(cons config-dir standard-info-dirs))))
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(if (not (eq system-type 'windows-nt))
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dirs
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;; Include the info directory near where Emacs executable was installed.
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(let* ((instdir (file-name-directory invocation-directory))
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(dir1 (expand-file-name "../info/" instdir))
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(dir2 (expand-file-name "../../../info/" instdir)))
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(cond ((file-exists-p dir1) (append dirs (list dir1)))
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((file-exists-p dir2) (append dirs (list dir2)))
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(t dirs)))))
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"Default list of directories to search for Info documentation files.
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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),
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unless Emacs is installed into a non-standard directory. In the latter
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case, the directory of Info files that come with Emacs should be
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first in this list.
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Once Info is started, the list of directories to search
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comes from the variable `Info-directory-list'.
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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
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the environment variable INFOPATH is set.
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Although this is a customizable variable, that is mainly for technical
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reasons. Normally, you should either set INFOPATH or customize
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`Info-additional-directory-list', rather than changing this variable."
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:initialize 'custom-initialize-delay
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:type '(repeat directory)
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:group 'info)
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;;; paths.el ends here
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