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

[Drew Adams]

> > +(defcustom duplicate-line-pos 0
> > +  "Where to put point after copying the line.
> 
> A better name for this would be duplicate-line-final-position or maybe
> duplicate-line-point-position.
> 
> Also, please mention this variable in NEWS, where duplicate-line is
> announced.

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.