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

[Mattias Engdegård]

23 juni 2023 kl. 12.28 skrev Eli Zaretskii <eliz@gnu.org>:

> This is a new feature in Emacs 29, so adding customization
> opportunities to it that allow fine control of its behavior is fine at
> this stage.  Of course, if the proposal is controversial, we shouldn't
> rush.  My impression till now was that it wasn't controversial.  If
> the only issue is better documentation and/or whether the value should
> be a number or a symbol, then I see no problem with installing this on
> the release branch.

The new setting would be quite incomplete if it doesn't apply to the more 
general and useful duplicate-dwim as well. I can help with that but obviously 
want it done properly.

It's not as straightforward as when duplicating lines because the region would 
need to move, and it's a lot more complicated for rectangles. This may take 
some time to get right.

In particular, the full generality of allowing an arbitrary number to be 
specified adds quite some complexity here, and it's all useless gold-plating -- 
nobody will ever set that knob to 3, say.