;;; loadhist.el --- lisp functions for working with feature groups
;; Copyright (C) 1995, 1998, 2000, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007 Free Software Foundation, Inc.
+;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
;; Maintainer: FSF
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, 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
;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
"Return the file and list of definitions associated with FEATURE.
The value is actually the element of `load-history'
for the file that did (provide FEATURE)."
- (catch 'foundit
- (mapc (lambda (x)
- (if (member (cons 'provide feature) (cdr x))
- (throw 'foundit x)))
- load-history)
- nil))
+ (catch 'foundit
+ (let ((element (cons 'provide feature)))
+ (dolist (x load-history nil)
+ (when (member element (cdr x))
+ (throw 'foundit x))))))
(defun feature-file (feature)
"Return the file name from which a given FEATURE was loaded.
"Return the list of features provided by FILE as it was loaded.
FILE can be a file name, or a library name.
A library name is equivalent to the file name that `load-library' would load."
- (let ((symbols (file-loadhist-lookup file))
- provides)
- (mapc (lambda (x)
- (if (and (consp x) (eq (car x) 'provide))
- (setq provides (cons (cdr x) provides))))
- symbols)
- provides))
+ (let (provides)
+ (dolist (x (file-loadhist-lookup file) provides)
+ (when (eq (car-safe x) 'provide)
+ (push (cdr x) provides)))))
(defun file-requires (file)
"Return the list of features required by FILE as it was loaded.
FILE can be a file name, or a library name.
A library name is equivalent to the file name that `load-library' would load."
- (let ((symbols (file-loadhist-lookup file))
- requires)
- (mapc (lambda (x)
- (if (and (consp x) (eq (car x) 'require))
- (setq requires (cons (cdr x) requires))))
- symbols)
- requires))
+ (let (requires)
+ (dolist (x (file-loadhist-lookup file) requires)
+ (when (eq (car-safe x) 'require)
+ (push (cdr x) requires)))))
(defsubst file-set-intersect (p q)
"Return the set intersection of two lists."
- (let ((ret nil))
+ (let (ret)
(dolist (x p ret)
- (if (memq x q) (setq ret (cons x ret))))
- ret))
+ (when (memq x q) (push x ret)))))
(defun file-dependents (file)
"Return the list of loaded libraries that depend on FILE.
(let ((provides (file-provides file))
(dependents nil))
(dolist (x load-history dependents)
- (if (file-set-intersect provides (file-requires (car x)))
- (setq dependents (cons (car x) dependents))))
- dependents))
+ (when (file-set-intersect provides (file-requires (car x)))
+ (push (car x) dependents)))))
(defun read-feature (prompt &optional loaded-p)
"Read feature name from the minibuffer, prompting with string PROMPT.
'(after-change-functions after-insert-file-functions
after-make-frame-functions auto-fill-function before-change-functions
blink-paren-function buffer-access-fontify-functions command-line-functions
- comment-indent-function compilation-finish-functions
+ comment-indent-function compilation-finish-functions delete-frame-functions
disabled-command-function find-file-not-found-functions
font-lock-beginning-of-syntax-function font-lock-fontify-buffer-function
font-lock-fontify-region-function font-lock-mark-block-function
font-lock-syntactic-face-function font-lock-unfontify-buffer-function
font-lock-unfontify-region-function kill-buffer-query-functions
kill-emacs-query-functions lisp-indent-function mouse-position-function
- redisplay-end-trigger-functions temp-buffer-show-function
- window-scroll-functions window-size-change-functions
- write-contents-functions write-file-functions
+ redisplay-end-trigger-functions suspend-tty-functions
+ temp-buffer-show-function window-scroll-functions
+ window-size-change-functions write-contents-functions write-file-functions
write-region-annotate-functions)
"A list of special hooks from Info node `(elisp)Standard Hooks'.
(unload-func (intern-soft (concat name "-unload-function"))))
;; If FEATURE-unload-function is defined and returns non-nil,
;; don't try to do anything more; otherwise proceed normally.
- (unless (and (bound-and-true-p unload-func)
+ (unless (and (fboundp unload-func)
(funcall unload-func))
;; Try to avoid losing badly when hooks installed in critical
;; places go away. (Some packages install things on
HCoop / bpt / emacs.git / blobdiff