View file File name : debian-startup.el Content :;;; debian-startup.el --- Debian specific emacsen startup code. ;; Copyright (C) 1998-2017 Rob Browning ;; Maintainer: Rob Browning <rlb@defaultvalue.org> ;; Keywords: debian ;; This file is part of the debian release of GNU Emacs, and will ;; be contributed to the FSF after testing. It is released under the same ;; terms, namely the GPL v2 or later. ;; 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 ;; the Free Software Foundation; either version 2, or (at your option) ;; 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 ;; 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: ;; This file contains startup code needed by all the various flavors ;; of Emacs for a Debian system. (defun debian-pkg-add-load-path-item (item) "Takes a path item (a string) and adds it to load path in the correct position for an add-on package, before the emacs system directories, but after the /usr/local/ directories. After modifying load-path, returns the new load-path." (let ((pos 0) (last-local-pos nil) (lp-rest load-path)) ;; Find the last /usr/local/ element. (while (not (null lp-rest)) (if (and (not (null (car lp-rest))) (string-match "^/usr/local" (car lp-rest))) (setq last-local-pos pos)) (setq pos (+ pos 1)) (setq lp-rest (cdr lp-rest))) (if (not last-local-pos) (error "No /usr/local/ prefixed paths in load-path")) (let ((result '()) (pos 0) (remainder load-path)) (while (consp remainder) (setq result (cons (car remainder) result)) (setq remainder (cdr remainder)) (if (= pos last-local-pos) (setq result (cons item result))) (setq pos (+ pos 1))) (setq load-path (nreverse result)) load-path))) (defun debian-unique-strings (strings) "Takes a list of strings and returns the list with *adjacent* duplicates removed." (let ((result '())) (while (consp strings) (if (not (string= (car strings) (car (cdr strings)))) (setq result (cons (car strings) result))) (setq strings (cdr strings))) (nreverse result))) (defun debian-run-directories (&rest dirs) "Load each file of the form XXfilename.el or XXfilename.elc in any of the dirs, where XX must be a number. The files will be run in alphabetical order. If a file appears in more than one of the dirs, then the earlier dir takes precedence, and a .elc file always supercedes a .el file of the same name." (let* ((paths (mapcar 'copy-sequence dirs)) ; Ensure we have unique objects. ;; Get a list of all the files in all the specified ;; directories that match the pattern. (files (apply 'append (mapcar (lambda (dir) (directory-files dir nil "^[0-9][0-9].*\\.elc?$" t)) paths))) ;; Now strip the directory portion, remove any .el or .elc ;; extension. (stripped-names (mapcar (lambda (file) (if (string-match "\\.el$" file) (substring file 0 -3) (if (string-match "\\.elc$" file) (substring file 0 -4) file))) (mapcar (lambda (file) (file-name-nondirectory file)) files))) ;; Finally sort them, and delete duplicates (base-names (debian-unique-strings (sort stripped-names 'string<)))) (setq load-path (append paths load-path)) ; Prefix paths temporarily. ;; Now load the files. "load" will make sure we get the byte ;; compiled one first, if any, and will respect load-path's ;; ordering. (mapc (lambda (file) (condition-case err (load file nil) (error (message "Error while loading %s: %s" file (error-message-string err))))) base-names) ;; Remove the paths we inserted, and only those paths. (dolist (item paths) (setq load-path (remq item load-path))))) (defun debian-startup (flavor) (debian-run-directories (format "/etc/%s/site-start.d" (symbol-name flavor))))