Add require/ function

lisp/acdw.el

@@ -878,7 +878,23 @@ three blank lines, then place the point on the second one."
   (newline)
   (delete-blank-lines)
   (newline 2)
-  (previous-line))
+  (forward-line -1))
+
+(defun require/ (feature &optional filename noerror)
+  "If FEATURE is not loaded, load it from FILENAME.
+This function works just like `require', with one crucial
+difference: if the FEATURE name contains a slash, the FILENAME
+will as well -- unless, of course, FILENAME is set.  This allows
+for `require/' to require files within subdirectories of
+directories of `load-path'.  Of course, NOERROR isn't affected by
+the change."
+  (let* ((feature-name (if (symbolp feature)
+                           (symbol-name feature)
+                         feature))
+         (filename (or filename
+                       (and (string-match-p "/" feature-name)
+                            feature-name))))
+    (require (intern feature-name) filename noerror)))
 
 (provide 'acdw)
 ;;; acdw.el ends here