bug#46621: Copy line

[Juri Linkov]

> I found the concept of "an easy command to duplicate the current line a
> number of times" to be slightly useful in general, but I'm not sure
> about whether extending it to regions makes much sense.  If you have a
> region already, then `M-w C-y' will be more convenient to say, anyway.

This would also mean that the problem is a missing command that
saves the current line to the kill-ring?  If such a command existed,
then duplicating the line would take two keys as well: the first
key to save the current line to the kill-ring, and the second key
to yank it.