Commit 1f22ad24 authored by André Spiegel's avatar André Spiegel
Browse files

(vc-registered): If FILE used to be registered under a certain

backend, try that one first.
parent 8989ab56
......@@ -5,7 +5,7 @@
;; Author: FSF (see vc.el for full credits)
;; Maintainer: Andre Spiegel <>
;; $Id: vc-hooks.el,v 1.119 2000/09/12 13:00:30 fx Exp $
;; $Id: vc-hooks.el,v 1.120 2000/09/21 13:15:26 spiegel Exp $
;; This file is part of GNU Emacs.
......@@ -241,9 +241,10 @@ exist."
(defun vc-registered (file)
"Return non-nil if FILE is registered in a version control system.
This function does not cache its result; it performs the test each
time it is invoked on a file. For a caching check whether a file is
registered, use `vc-backend'."
This function performs the check each time it is called. To rely
on the result of a previous call, use `vc-backend' instead. If the
file was previously registered under a certain backend, then that
backend is tried first."
(let (handler)
(if (boundp 'file-name-handler-alist)
(setq handler (find-file-name-handler file 'vc-registered)))
......@@ -253,13 +254,15 @@ registered, use `vc-backend'."
;; There is no file name handler.
;; Try vc-BACKEND-registered for each handled BACKEND.
(catch 'found
(lambda (b)
(and (vc-call-backend b 'registered file)
(vc-file-setprop file 'vc-backend b)
(throw 'found t)))
(unless vc-ignore-vc-files
(let ((backend (vc-file-getprop file 'vc-backend)))
(lambda (b)
(and (vc-call-backend b 'registered file)
(vc-file-setprop file 'vc-backend b)
(throw 'found t)))
(if (or (not backend) (eq backend 'none))
(cons backend vc-handled-backends))))
;; File is not registered.
(vc-file-setprop file 'vc-backend 'none)
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