improve PRIMARY buffer copy-paste behaviour, paste over

[Thomas Kluyver]

On Fri, Mar 6, 2020, at 1:43 AM, Thiago Macieira wrote:
> You mean middle click while the left button is still held down? That 
> effectively means dragging the text from source to destination.

If I've understood Johannes correctly, what he's proposing is slightly different from drag & drop:

1. Click & hold, drag to select source text, release (setting PRIMARY buffer)
2. Click & hold, drag to select text to be replaced, middle click (paste from PRIMARY), release

Thomas