Path: utzoo!attcan!uunet!nuchat!sugar!ficc!peter
From: peter@ficc.UUCP (Peter da Silva)
Newsgroups: comp.unix.wizards
Subject: Re: Kernel Hacks & Weird Filenames
Message-ID: <793@.UUCP>
Date: 18 May 88 17:37:30 GMT
References: <13041@brl-adm.ARPA> <14020039@hpisod2.HP.COM> <326@augean.OZ> <56@lazlo.UUCP>
Organization: SCADA
Lines: 36

In article <56@lazlo.UUCP>, ccs@lazlo.UUCP writes:
> In article <326@augean.OZ> idall@augean.OZ (Ian Dall) writes:
> :If done in the terminal driver, new stty options could be added to say
> :what characters are to be considered unprintable.

You would also have to provide a reverse mapping (a-la lcase) that let
you do this:

% ls foo*
foo^G^?bar
% rm foo^G^?bar

and have it work right.

> Many things
> would break if you put the stuff in the kernel tty driver, let's leave
> it in the "ls" or "cat" command...

The easy solution is to have this stuff active on line discipline 1 or
something (if your system is already using 1). The best way to do this
in general would be to have a couple of mapping tables (yes, in the tty
driver!) that allowed you to map arbitrary strings. I believe Microport
already does this...

How's this for a fantasy...

% stty -map lcase # clear lcase/ucase default map
% stty map cntrl # set control character map
% stty mapi '^[[K' '^U' # map CEOL to kill on input
% stty mapo '^U' '^M^[[K' # map kill character to CR plus erase line
% stty mapo '^H' '^H ^H' # map erase character to BS-space-BS

I'm sure we can beat the TOPS-20 terminal driver if we REALLY try :->.
-- 
-- Peter da Silva, Ferranti International Controls Corporation.
-- Phone: 713-274-5180. Remote UUCP: uunet!nuchat!sugar!peter.