bug#6447: 23.1; revert-buffer in *vc-diff*

[Juri Linkov]

>> Like the command `diff' after calling `diff-mode' sets
>> `revert-buffer-function' to lambda with its function arguments,
>> `vc-diff-internal' could do the same:
>>
>> === modified file 'lisp/vc/vc.el'
>> --- lisp/vc/vc.el    2010-06-11 19:09:57 +0000
>> +++ lisp/vc/vc.el    2010-06-19 14:51:14 +0000
>> @@ -1547,6 +1547,9 @@ (defun vc-diff-internal (async vc-filese
>>            (message "%s" (cdr messages))
>>            nil)
>>        (diff-mode)
>> +      (set (make-local-variable 'revert-buffer-function)
>> +       `(lambda (ignore-auto noconfirm)
>> +          (vc-diff-internal ,async ',vc-fileset ,rev1 ,rev2 ,verbose)))
>>        ;; Make the *vc-diff* buffer read only, the diff-mode key
>>        ;; bindings are nicer for read only buffers. pcl-cvs does the
>>        ;; same thing.
>
> Looks like a fine idea, please go ahead.

Done.

-- 
Juri Linkov
http://www.jurta.org/emacs/