Righteous featurectomy of vc-keep-workfiles - always do it.

* vc/vc-dispatcher.el, vc/vc-hooks.el, vc/vc-rcs.el, vc/vc-sccs.el,
vc/vc.el: Righteous featurectomy of vc-keep-workfiles, it's a
shoot-self-in-foot archaism.  Workfiles are always kept.

lisp/ChangeLog

+2014-12-10  Eric S. Raymond  <esr@snark.thyrsus.com>
+
+	* vc/vc-dispatcher.el, vc/vc-hooks.el, vc/vc-rcs.el,
+	vc/vc-sccs.el, vc/vc.el: Righteous featurectomy of
+	vc-keep-workfiles, it's a shoot-self-in-foot archaism.
+	Workfiles are always kept.
+
 2014-12-10  Rasmus Pank Roulund  <emacs@pank.eu>
 	* net/ange-ftp.el (ange-ftp-switches-ok): Disallow flags causing

lisp/vc/vc-dispatcher.el

@@ -702,7 +702,7 @@ the buffer contents as a comment."
     ;; Now make sure we see the expanded headers
     (when log-fileset
       (mapc
-       (lambda (file) (vc-resynch-buffer file vc-keep-workfiles t))
+       (lambda (file) (vc-resynch-buffer file t t))
        log-fileset))
     (when (vc-dispatcher-browsing)
       (vc-dir-move-to-goal-column))

lisp/vc/vc-hooks.el

@@ -164,13 +164,6 @@ Otherwise, not displayed."
   :type 'boolean
   :group 'vc)
 
-(defcustom vc-keep-workfiles t
-  "Whether to keep work files on disk after commits, on a locking VCS.
-This variable has no effect on modern merging-based version
-control systems."
-  :type 'boolean
-  :group 'vc)
-
 ;;; This is handled specially now.
 ;; Tell Emacs about this new kind of minor mode
 ;; (add-to-list 'minor-mode-alist '(vc-mode vc-mode))

lisp/vc/vc-rcs.el

@@ -226,12 +226,10 @@ When VERSION is given, perform check for that version."
 
 (defun vc-rcs-register (files &optional comment)
   "Register FILES into the RCS version-control system.
+Automatically retrieve a read-only version of the file with keywords expanded.
 COMMENT can be used to provide an initial description for each FILES.
 Passes either `vc-rcs-register-switches' or `vc-register-switches'
-to the RCS command.
-
-Automatically retrieve a read-only version of the file with keywords
-expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile."
+to the RCS command."
   (let (subdir name)
     (dolist (file files)
       (and (not (file-exists-p
@@ -244,6 +242,7 @@ expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile."
       (apply #'vc-do-command "*vc*" 0 "ci" file
 	     ;; if available, use the secure registering option
 	     (and (vc-rcs-release-p "5.6.4") "-i")
+	     "-u"
 	     (and comment (concat "-t-" comment))
 	     (vc-switches 'RCS 'register))
       ;; parse output to find master file name and workfile version
@@ -328,7 +327,7 @@ whether to remove it."
 	(apply #'vc-do-command "*vc*" 0 "ci" (vc-master-name file)
 	       ;; if available, use the secure check-in option
 	       (and (vc-rcs-release-p "5.6.4") "-j")
-	       (concat (if vc-keep-workfiles "-u" "-r") rev)
+	       (concat "-u" rev)
 	       (concat "-m" comment)
 	       switches)
 	(vc-file-setprop file 'vc-working-revision nil)

lisp/vc/vc-sccs.el

@@ -195,12 +195,10 @@ Optional string REV is a revision."
 
 (defun vc-sccs-register (files &optional comment)
   "Register FILES into the SCCS version-control system.
+Automatically retrieve a read-only version of the files with keywords expanded.
 COMMENT can be used to provide an initial description of FILES.
 Passes either `vc-sccs-register-switches' or `vc-register-switches'
-to the SCCS command.
-
-Automatically retrieve a read-only version of the files with keywords
-expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile."
+to the SCCS command."
   (dolist (file files)
     (let* ((dirname (or (file-name-directory file) ""))
 	   (basename (file-name-nondirectory file))
@@ -214,8 +212,7 @@ expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile."
 	       (and comment (concat "-y" comment))
 	       (vc-switches 'SCCS 'register)))
       (delete-file file)
-      (if vc-keep-workfiles
-	  (vc-sccs-do-command nil 0 "get" (vc-master-name file))))))
+      (vc-sccs-do-command nil 0 "get" (vc-master-name file)))))
 
 (defun vc-sccs-responsible-p (file)
   "Return non-nil if SCCS thinks it would be responsible for registering FILE."
@@ -230,8 +227,7 @@ expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile."
     (apply 'vc-sccs-do-command nil 0 "delta" (vc-master-name file)
 	   (concat "-y" comment)
 	   (vc-switches 'SCCS 'checkin))
-    (if vc-keep-workfiles
-	(vc-sccs-do-command nil 0 "get" (vc-master-name file)))))
+	(vc-sccs-do-command nil 0 "get" (vc-master-name file))))
 
 (defun vc-sccs-find-revision (file rev buffer)
   (apply 'vc-sccs-do-command

lisp/vc/vc.el

@@ -1111,8 +1111,7 @@ For old-style locking-based version control systems, like RCS:
   If every file is registered and unlocked, check out (lock)
    the file(s) for editing.
   If every file is locked by you and has changes, pop up a
-   *vc-log* buffer to check in the changes.  If the variable
-   `vc-keep-workfiles' is non-nil (the default), leave a
+   *vc-log* buffer to check in the changes.  Leave a
    read-only copy of each changed file after checking in.
   If every file is locked by you and unchanged, unlock them.
   If every file is locked by someone else, offer to steal the lock."
@@ -1353,7 +1352,7 @@ first backend that could register the file is used."
        ;;   (make-local-variable 'backup-inhibited)
        ;;   (setq backup-inhibited t))
 
-       (vc-resynch-buffer file vc-keep-workfiles t))
+       (vc-resynch-buffer file t t))
      files)
     (when (derived-mode-p 'vc-dir-mode)
       (vc-dir-move-to-goal-column))
@@ -1516,9 +1515,6 @@ buffer is popped up to accept a comment.  If INITIAL-CONTENTS is
 non-nil, then COMMENT is used as the initial contents of the log
 entry buffer.
 
-If `vc-keep-workfiles' is nil, FILE is deleted afterwards, provided
-that the version control system supports this mode of operation.
-
 Runs the normal hooks `vc-before-checkin-hook' and `vc-checkin-hook'."
   (when vc-before-checkin-hook
     (run-hooks 'vc-before-checkin-hook))