Drew Adams <drew.adams@oracle.com> schrieb am Mi., 23. Nov. 2016 um
17:43 Uhr:

>
> > I do think it would be nice to let users disable use of this
> > feature, even if the terminal supports it.  Since we do that
> > with other xterm extensions (see xterm-extra-capabilities),
> > we should probably offer the same level of control for this
> > capability, either as part of getSelection, or as a separate
> > feature.
>
> Clearly.
>
> If Emacs can suddenly start supporting it then Emacs can
> provide a way to turn it off (it was, in effect, off before).
>
> > Philipp, would you like to add this on the emacs-25 branch?
>
> Yes, thank you.
>

There shouldn't be any need for turning off bracketed pasting. It's just a
separate input key sequence that is either sent or not sent by the terminal
emulator. This isn't different from e.g. the Hyper key; there's also no
option to disable the latter.
The issue here is that the terminal emulator sends various escape sequences
to the running program; such escape sequences cannot in general be used as
custom key sequences, because they are intended to have a special
predefined meaning.