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I'm rejected this patch because it would take a lot of work
to get this patch to the point where it would be good enough
for inclusion.

Now to answer Tim's questions.  Tabs vs spaces:  depends on
the day.  I use both emacs & vi, emacs does convert to
spaces.  But I must have screwed something up.

0xffff was only a hack to not deal with line numbers > 2
**16.  I was going for bang for the buck.  I agree it would
be best to remove this limitation.