bug#57434: 28.1.91; Terminal Emacs Mac OS flickering.

[Gerd Möllmann]

Eli Zaretskii <eliz@gnu.org> writes:

> What is P1 and what is P2?

The two proposals that we know of.

>
>> I installed iTerm2 just now, which implements P2 at least.  iTerm2 has a
>> preference options to switch GPU acceleration on/off.  iTerm2 uses
>> TERM=xterm256-color, independent of the GPU setting.  So matching TERM
>> wouldn't work with iTerm2.  The query control sequence of P2 seems to
>> return if GPU accel is on or off on iTerm2.
>
> What is the "query control sequence"?

Proposal P2 defines 3 control sequences.  In addtion to begin/end, it
contains a control sequence to determine the status of synchronized
updates: on, off, permanently on, permanently off (AFAIU).

> Do you happen to know where is the definitive documentation of Sync?

Sorry, I don't know a definitive documentation.