On: Are We Sixel Yet

[kragen]

while it is indeed useful for a terminal emulator to be efficient at discarding characters you will never see, it probably isn't the main criterion to judge it by

[vanderZwan → kragen]

I presume you're talking about Alacritty? Because Terminology doesn't do this AFAIK (and there's a mini-map next to the scrollbar showing everything that came by)

[kragen → vanderZwan]

well, processing characters you'll never see, then