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

[Eli Zaretskii <eliz@gnu.org>]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  64185@debbugs.gnu.org,
>   me@eshelyaron.com,  zkanfer@gmail.com
> Date: Fri, 23 Jun 2023 09:08:56 +0200
> 
> >>>>> On Thu, 22 Jun 2023 21:17:51 +0300, Juri Linkov <juri@linkov.net> said:
> 
>     Juri> diff --git a/etc/NEWS b/etc/NEWS
>     Juri> index ca0d602e9ad..aa3b758a815 100644
>     Juri> --- a/etc/NEWS
>     Juri> +++ b/etc/NEWS
>     Juri> @@ -696,7 +696,9 @@ between these modes while the user is inputting a command by hitting
>     Juri>  'duplicate-line' duplicates the current line the specified number of times.
>     Juri>  'duplicate-dwim' duplicates the region if it is active.  If not, it
>     Juri>  works like 'duplicate-line'.  An active rectangular region is
>     Juri> -duplicated on its right-hand side.
>     Juri> +duplicated on its right-hand side.  The new user option
>     Juri> +'duplicate-line-final-position' specifies where to move point
>     Juri> +after duplicating the line.
> 
> The first thing that springs to mind here is "where on the line is
> point placed?". At the beginning, end, same column as when
> duplicate-line was invoked? (I know I could just read the code, but
> the caffeine hasnʼt kicked in yet :-))

This is a NEWS entry, it doesn't have to provide such details.  The
doc string should, so if these details are missing from the doc
string, it should be improved to include them.