2 files changed, 16 insertions, 2 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index d446ef93926..7ad751b0475 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2007-06-20  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+        * vc.el (vc-default-log-view-mode): New function.
+        (vc-print-log): Add new `log-view-mode' VC operation.
+
 2007-06-20  Juanma Barranquero  <lekktu@gmail.com>
 
         * ido.el (ido-find-file-in-dir): Don't signal an error for
diff --git a/lisp/vc.el b/lisp/vc.el
index d5c53a15a76..19e428d90a8 100644
--- a/lisp/vc.el
+++ b/lisp/vc.el
@@ -105,7 +105,9 @@
 ;;
 ;; * registered (file)
 ;;
-;;   Return non-nil if FILE is registered in this backend.
+;;   Return non-nil if FILE is registered in this backend.  Both this
+;;   function as well as `state' should be careful to fail gracefully in the
+;;   event that the backend executable is absent.
 ;;
 ;; * state (file)
 ;;
@@ -270,6 +272,12 @@
 ;;   Insert the revision log of FILE into BUFFER, or the *vc* buffer
 ;;   if BUFFER is nil.
 ;;
+;; - log-view-mode ()
+;;
+;;   Mode to use for the output of print-log.  This defaults to
+;;   `log-view-mode' and is expected to be changed (if at all) to a derived
+;;   mode of `log-view-mode'.
+;;
 ;; - show-log-entry (version)
 ;;
 ;;   If provided, search the log entry for VERSION in the current buffer,
@@ -2453,7 +2461,7 @@ If FOCUS-REV is non-nil, leave the point at that revision."
     (pop-to-buffer (current-buffer))
     (vc-exec-after
      `(let ((inhibit-read-only t))
-        (log-view-mode)
+        (vc-call-backend ',(vc-backend file) 'log-view-mode)
         (goto-char (point-max)) (forward-line -1)
         (while (looking-at "=*\n")
           (delete-char (- (match-end 0) (match-beginning 0)))
@@ -2468,6 +2476,7 @@ If FOCUS-REV is non-nil, leave the point at that revision."
                          ',focus-rev)
         (set-buffer-modified-p nil)))))
 
+(defun vc-default-log-view-mode (backend) (log-view-mode))
 (defun vc-default-show-log-entry (backend rev)
   (with-no-warnings
    (log-view-goto-rev rev)))