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    SubjectRe: [Fwd: escape key]
    James Cloos wrote:

    >>>>>>"Jan" == Jan Engelhardt <> writes:
    >Jan> HOWEVER, unix people probably _had a reason_ to make ESC generate
    >Jan> part of what function keys do.
    >You are looking at it backwards. The Escape key generates an ASCII
    >escape. The funtion keys (including the cursor keys) generate escape
    >sequences because the vt100 won out the title as the most ubiquitous
    >async serial terminal, and linux devs chose to have the console be
    >(mostly) vt100 compatable. As xterm, et al had done before.
    >The terminals (the actual hardware) used ASCII, so it was normal to
    >use Escape to initiate the sequences used by the function keys.
    >And that concept goes back a *lot* longer than unix. (Hmm. I can't
    >remember. Did TOPS-20 or its predecessor have glass terminals in the
    >day? I did get to use a DEC paper terminal a couple of times, but
    >that was connected to a VMS box back in the '80s; most of the time it
    >sat in the corner collecting dust....)
    >At any rate, given that Escape was used to initiate sequences sent to
    >the terminal for funtions such as moving the cursor around the screen,
    >clearing rows or cols, et al it must have only seemed natural to also
    >have it initiate sequences /from/ the terminal which did not fit into
    >standard ASCII. That was after all Escape's purpose in the ASCII std.
    >If you do want to change the console's terminal emulation, a good
    >first step would be to check whether any existing terminal already
    >uses something other than Escape to initiate function key sequences,
    >and, if so, promote that as the alternative to vt100-esque emulation.
    >Finally, note that the reason vt100 was chosen for the console was to
    >make it more useful for users who were physically at a linux box, were
    >logged in on the console, and from there logged in to remote servers.
    >That does remain something which the console *must* support.
    Also ansi came along and pretty much put their blessing on what DEC had
    done and made the
    escape sequences a standard.



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