(error "%S is not a currently loaded feature" feature)
(car (feature-symbols feature))))
+(defun file-loadhist-lookup (file)
+ "Return the `load-history' element for FILE."
+ ;; 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)))))
+ symbols))
+
(defun file-provides (file)
"Return the list of features provided by FILE."
- (let ((symbols (cdr (assoc file load-history)))
+ (let ((symbols (file-loadhist-lookup file))
provides)
(mapc (lambda (x)
(if (and (consp x) (eq (car x) 'provide))
(defun file-requires (file)
"Return the list of features required by FILE."
- (let ((symbols (cdr (assoc file load-history)))
+ (let ((symbols (file-loadhist-lookup file))
requires)
(mapc (lambda (x)
(if (and (consp x) (eq (car x) 'require))
`-hook' or `-hooks', from which `unload-feature' tries to remove
pertinent symbols.")
+(defvar unload-hook-features-list nil
+ "List of features of the package being unloaded.
+
+This is meant to be used by FEATURE-unload-hook hooks, see the
+documentation of `unload-feature' for details.")
+
;;;###autoload
(defun unload-feature (feature &optional force)
"Unload the library that provided FEATURE, restoring all its autoloads.