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?
I can do
"column_header" is somehow redundant with "tuples_only". Use the existing one instead of adding a new one?
It is different - a result of tuples_only is just tuples - not column names, not title, footer. I needed new special flag for enhancing tuples_only to print column names
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.
Maybe, maybe not. removing PRINT_RAW you need to enhance PRINT_UNALIGNED to use one shot parameters and you have to teach it to print column names in tuples_only mode. The code's length will be same. The form of this patch is not final.
Missing help entry.
Missing non regression tests.
Missing documentation.
yes - I wrote it like proof concept - be possible (for me, for others) to verify usability of this commands (and design). I tested it against gnuplot and looks it is works