using log-view-mode when a file name is not available (was: Re: help wanted for vc-hg.el)

[Dan Nicolaescu]

Stefan Monnier <address@hidden> writes:

  > PS: for vc-hg.el and "hg log" output, check the new `log-view-mode' VC
  >     operation I added in vc.el and which is now used in vc-bzr.el.
  >     Basically, you should just define a vc-hg-log-view-mode derived mode.

Thanks, I committed a change that did that.

Now one issue is left: the file name does not appear in the hg (and
bzr) log. 
log-view-mode really wants a file name when trying to do a diff
between versions. Do you have any idea what to do about that?