X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lisp%2Fnnoo.el;h=dc2fa31feed85576b15da0ec9b178252e4f5929f;hb=0563df167689ba46e219f7915c6f5b321da614ce;hp=c28c888f30605dbd90a40b85f7e369ad74409b45;hpb=e85b83e8b076986fb7b0b0d805fbf3daec45e941;p=elisp%2Fgnus.git-

diff --git a/lisp/nnoo.el b/lisp/nnoo.el
index c28c888..dc2fa31 100644
--- a/lisp/nnoo.el
+++ b/lisp/nnoo.el
@@ -1,7 +1,9 @@
 ;;; nnoo.el --- OO Gnus Backends
-;; Copyright (C) 1996,97 Free Software Foundation, Inc.
 
-;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Copyright (C) 1996, 1997, 1998, 1999, 2000
+;;	Free Software Foundation, Inc.
+
+;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;; Keywords: news
 
 ;; This file is part of GNU Emacs.
@@ -25,8 +27,8 @@
 
 ;;; Code:
 
-(require 'nnheader)
 (eval-when-compile (require 'cl))
+(require 'nnheader)
 
 (defvar nnoo-definition-alist nil)
 (defvar nnoo-state-alist nil)
@@ -103,7 +105,13 @@
     (nnoo-change-server pbackend
 			(nnoo-current-server backend)
 			(cdr (assq pbackend (nnoo-parents backend))))
-    (apply function args)))
+    (prog1
+	(apply function args)
+      ;; Copy the changed variables back into the child.
+      (let ((vars (cdr (assq pbackend (nnoo-parents backend)))))
+	(while vars
+	  (set (cadar vars) (symbol-value (caar vars)))
+	  (setq vars (cdr vars)))))))
 
 (defun nnoo-execute (backend function &rest args)
   "Execute FUNCTION on behalf of BACKEND."
@@ -112,7 +120,13 @@
     (nnoo-change-server pbackend
 			(nnoo-current-server backend)
 			(cdr (assq pbackend (nnoo-parents backend))))
-    (apply function args)))
+    (prog1
+	(apply function args)
+      ;; Copy the changed variables back into the child.
+      (let ((vars (cdr (assq pbackend (nnoo-parents backend)))))
+	(while vars
+	  (set (cadar vars) (symbol-value (caar vars)))
+	  (setq vars (cdr vars)))))))
 
 (defmacro nnoo-map-functions (backend &rest maps)
   `(nnoo-map-functions-1 ',backend ',maps))
@@ -189,7 +203,9 @@
 	    (nconc bvariables
  		   (list (cons (car def) (and (boundp (car def))
  					      (symbol-value (car def)))))))
-	  (set (car def) (cadr def))))
+	  (if (equal server "*internal-non-initialized-backend*")
+	      (set (car def) (symbol-value (cadr def)))
+	    (set (car def) (cadr def)))))
       (while parents
 	(nnoo-change-server
 	 (caar parents) (format "%s+%s" backend server)
@@ -219,7 +235,10 @@
       (nconc bstate (list (cons current state))))))
 
 (defsubst nnoo-current-server-p (backend server)
-  (equal (nnoo-current-server backend) server))
+  (equal (nnoo-current-server backend)
+	 (if nnoo-parent-backend
+	     (format "%s+%s" nnoo-parent-backend server)
+	   server)))
 
 (defun nnoo-current-server (backend)
   (nth 1 (assq backend nnoo-state-alist)))
@@ -285,6 +304,20 @@ All functions will return nil and report an error."
 		   (&rest args)
 		 (nnheader-report ',backend ,(format "%s-%s not implemented"
 						     backend function))))))))
+
+(defun nnoo-set (server &rest args)
+  (let ((parents (nnoo-parents (car server)))
+	(nnoo-parent-backend (car server)))
+    (while parents
+      (nnoo-change-server (caar parents)
+			  (cadr server)
+			  (cdar parents))
+      (pop parents)))
+  (nnoo-change-server (car server)
+		      (cadr server) (cddr server))
+  (while args
+    (set (pop args) (pop args))))
+
 (provide 'nnoo)
 
 ;;; nnoo.el ends here.