*** empty log message ***

[gnu-emacs] / lisp / loadhist.el

diff --git a/lisp/loadhist.el b/lisp/loadhist.el
index bcdf47387da083358964ca8c0fce86c41eea82c0..8ca1de4aeca093aeb08ff6077258c78daaad8438 100644 (file)
--- a/lisp/loadhist.el
+++ b/lisp/loadhist.el
@@ -1,6 +1,7 @@
 ;;; loadhist.el --- lisp functions for working with feature groups
 
-;; Copyright (C) 1995, 1998, 2000, 2005 Free Software Foundation, Inc.
+;; Copyright (C) 1995, 1998, 2000, 2001, 2002, 2003, 2004,
+;;   2005, 2006, 2007 Free Software Foundation, Inc.
 
 ;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
 ;; Maintainer: FSF
@@ -31,6 +32,8 @@
 
 ;;; Code:
 
+(eval-when-compile (require 'cl))
+
 (defun feature-symbols (feature)
   "Return the file and list of definitions associated with FEATURE.
 The value is actually the element of `load-history'
@@ -52,24 +55,23 @@ a buffer with no associated file, or an `eval-region', return nil."
     (car (feature-symbols feature))))
 
 (defun file-loadhist-lookup (file)
-  "Return the `load-history' element for FILE."
+  "Return the `load-history' element for FILE.
+FILE can be a file name, or a library name.
+A library name is equivalent to the file name that `load-library' would load."
   ;; First look for FILE as given.
   (let ((symbols (assoc file load-history)))
     ;; Try converting a library name to an absolute file name.
     (and (null symbols)
-        (let ((absname (find-library-name file)))
-          (if (not (equal absname file))
-              (setq symbols (cdr (assoc absname load-history))))))
-    ;; Try converting an absolute file name to a library name.
-    (and (null symbols) (string-match "[.]el\\'" file)
-        (let ((libname (file-name-nondirectory file)))
-          (string-match "[.]el\\'" libname)
-          (setq libname (substring libname 0 (match-beginning 0)))
-          (setq symbols (cdr (assoc libname load-history)))))
+        (let ((absname
+               (locate-file file load-path (get-load-suffixes))))
+          (and absname (not (equal absname file))
+               (setq symbols (cdr (assoc absname load-history))))))
     symbols))
 
 (defun file-provides (file)
-  "Return the list of features provided by FILE."
+  "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)
@@ -79,7 +81,9 @@ a buffer with no associated file, or an `eval-region', return nil."
     provides))
 
 (defun file-requires (file)
-  "Return the list of features required by 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)
@@ -97,7 +101,9 @@ a buffer with no associated file, or an `eval-region', return nil."
 
 (defun file-dependents (file)
   "Return the list of loaded libraries that depend on FILE.
-This can include FILE itself."
+This can include FILE itself.
+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 ((provides (file-provides file))
        (dependents nil))
     (dolist (x load-history dependents)
@@ -113,7 +119,9 @@ return the feature \(symbol\)."
                           (mapcar (lambda (feature)
                                     (list (symbol-name feature)))
                                   features)
-                          nil t)))
+                          ;; Complete only features loaded from a file
+                          #'(lambda (f) (feature-file (intern (car f))))
+                          t)))
 
 (defvaralias 'loadhist-hook-functions 'unload-feature-special-hooks)
 (defvar unload-feature-special-hooks
@@ -203,30 +211,38 @@ such as redefining an Emacs function."
          (elp-restore-function elt))))
     (dolist (x unload-hook-features-list)
       (if (consp x)
-         (cond
+         (case (car x)
           ;; Remove any feature names that this file provided.
-          ((eq (car x) 'provide)
+          (provide
            (setq features (delq (cdr x) features)))
-          ((eq (car x) 'defun)
+          ((defun autoload)
            (let ((fun (cdr x)))
              (when (fboundp fun)
                (when (fboundp 'ad-unadvise)
                  (ad-unadvise fun))
-               (fmakunbound fun)
                (let ((aload (get fun 'autoload)))
-                 (when aload
-                   (fset fun (cons 'autoload aload))))))))
+                 (if aload
+                      (fset fun (cons 'autoload aload))
+                    (fmakunbound fun))))))
+           ((t require defface) nil)
+          (t (message "Unexpected element %s in load-history" x)))
        ;; Kill local values as much as possible.
        (dolist (buf (buffer-list))
          (with-current-buffer buf
+            (if (and (boundp x) (timerp (symbol-value x)))
+                (cancel-timer (symbol-value x)))
            (kill-local-variable x)))
+        (if (and (boundp x) (timerp (symbol-value x)))
+            (cancel-timer (symbol-value x)))
        ;; Get rid of the default binding if we can.
        (unless (local-variable-if-set-p x)
          (makunbound x))))
     ;; Delete the load-history element for this file.
-    (setq load-history (delq (assoc file load-history) load-history))))
+    (setq load-history (delq (assoc file load-history) load-history)))
+  ;; Don't return load-history, it is not useful.
+  nil)
 
 (provide 'loadhist)
 
-;;; arch-tag: 70bb846a-c413-4f01-bf88-78dba4ac0798
+;; arch-tag: 70bb846a-c413-4f01-bf88-78dba4ac0798
 ;;; loadhist.el ends here