VC (RCS): unlocked-changes handling

[Carl Henrik Lunde]

Hi,

If you change a file without acquiring a lock, and then run
`vc-next-action', the following prompt appears: "File has unlocked
changes.  Claim lock retaining changes? "

If you answer yes, you retain your buffer as it was, but the file is
overwritten with the old version (as it was on last checking, but with
your lock).

The buffer is still read only, and buffer-modified-p => nil, so
save-buffer has no effect.  A stupid user (*cough*) may try
kill-buffer and find-file to reopen the buffer, and then end up with
loosing his changes.

I think both of these flags should be changed, and/or the buffer
saved.

Thanks for looking at this

  Carl

In GNU Emacs 22.0.50.2 (i686-pc-linux-gnu, GTK+ Version 2.6.4)
 of 2005-03-26 on eon