[Orgmode] FR: customizable fallback function for org-complete

[Adam Spiers]

Hi Carsten,

Here's a feature request idea which should be easy to implement.  The
docstring for org-complete ends with:

  At all other locations, this simply calls `ispell-complete-word'.

Personally I would prefer the fallback behaviour to be to call
hippie-expand.  Others might like dabbrev-expand, etc.  Can this be
made customizable?

Thanks,
Adam