EPA: empty tup_tail has noAnn
In Parser.y, the tup_tail rule had the following option
| {- empty -} %shift { return [Left noAnn] }
Once this works through PostProcess.hs
, it means we add an extra
Missing
constructor if the last item was a comma.
Change the annotation type to a Bool
to indicate this, and use the
EpAnn Anchor
for the print location for the others.