I'm okay with the names graw/graw+, and for having such short-hands.
Missing break in switch, even if last item and useless, because other items do it... Also should be added at its place in alphabetical order?
"column_header" is somehow redundant with "tuples_only". Use the existing one instead of adding a new one?
More generally, ISTM that the same effect could be achieved without adding a new print function, but by setting more options (separator, ...) and calling an existing print function. If so, I think it would reduce the code size.
