[TUHS] early Unix terminals (was: Re: Curly braces: An evolution of UNIX and C)

[G. Branden Robinson via TUHS]

At 2026-05-20T19:44:18-0600, Warner Losh wrote:
> Close. ^T didn't display in that extra line. The tty driver didn't
> know terminal types... unless it was a local hack.

Ah, good point.  Doing so via termcap/terminfo would have been a waste
anyway,[1] as the main motivation to whack Control+T in the first place
is because your userland program is jammed up/swapped out.

Regards,
Branden

[1] To say nothing of the tedium of setting up a "mailbox" for the
    kernel to drop the information into for later retrieval by the
    userland program, again missing the point of interrupting the kernel
    to demand basic performance stats from it.
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