KeyError exceptions importing from CVS

[Frank Kingswood]

Hallo!

I'm getting KeyError exceptions importing from CVS:

** unknown exception encountered, details follow
** report bug details to http://www.selenic.com/mercurial/bts
** or mercurial at selenic.com
** Mercurial Distributed SCM (version 6605a03cbf87)
Traceback (most recent call last):
   File "/home/fk/bin/hg", line 14, in <module>
     mercurial.dispatch.run()
   File "..lib/python/mercurial/dispatch.py", line 20, in run
     sys.exit(dispatch(sys.argv[1:]))
   File "..lib/python/mercurial/dispatch.py", line 29, in dispatch
     return _runcatch(u, args)
   File "..lib/python/mercurial/dispatch.py", line 45, in _runcatch
     return _dispatch(ui, args)
   File "..lib/python/mercurial/dispatch.py", line 348, in _dispatch
     ret = _runcommand(ui, options, cmd, d)
   File "..lib/python/mercurial/dispatch.py", line 401, in _runcommand
     return checkargs()
   File "..lib/python/mercurial/dispatch.py", line 357, in checkargs
     return cmdfunc()
   File "..lib/python/mercurial/dispatch.py", line 342, in <lambda>
     d = lambda: func(ui, *args, **cmdoptions)
   File "..lib/python/hgext/convert/__init__.py", line 67, in convert
     return convcmd.convert(ui, src, dest, revmapfile, **opts)
   File "..lib/python/hgext/convert/convcmd.py", line 311, in convert
     opts.get('rev'))
   File "..lib/python/hgext/convert/convcmd.py", line 37, in convertsource
     return source(ui, path, rev)
   File "..lib/python/hgext/convert/cvs.py", line 25, in __init__
     self._parse()
   File "..lib/python/hgext/convert/cvs.py", line 105, in _parse
     latest = max(filerevids[r], latest)

Looking at the source of cvs.py here
http://hg.intevation.org/mercurial/crew-stable/file/6605a03cbf87/hgext/convert/cvs.py

the code does:
104    for r in oldrevs:
105        latest = max(filerevids[r], latest)

but the filerevids dictionary was initialized with keys that do not 
match those in oldrevs (notice oldrev vs rev in the strings):

120    # save some information for identifying branch points
121    oldrevs.append("%s:%s" % (oldrev, file))
122    filerevids["%s:%s" % (rev, file)] = id

This is with current crew-stable.

Is this a bug?

Frank