bug#64185: proposal for new function: copy-line

[Drew Adams]

> > FWIW -
> >
> > Point is the cursor position.  So I'd suggest
> > just "point" (or "cursor-position", if you
> > like), and not "point-position".
> >
> > We do use `pos' in various names to mean a
> > buffer position, but in those cases it
> > doesn't stand for point (the cursor position).
> > So I agree that `pos' shouldn't be used here.
> 
> In the patch a new position is counted by lines,
> so maybe a better name would be 'duplicate-line-final-line'.
> But this double "line-line" doesn't look nice.

Is it about absolute line number, relative line
number, cursor position (point), some other buffer
position,...?

A guess, from what you just wrote, is that it's
about the relative line number, i.e., relative
to the number of the line of the cursor initially.
(Just a guess; haven't followed this thread.)