Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!unido!tub!net
From: net@tub.UUCP (Oliver Laumann)
Newsgroups: comp.unix.questions
Subject: Re: File completion in BSD4.3-derived CSH
Keywords: file completion,ioctl,stty
Message-ID: <1327@tub.UUCP>
Date: 9 May 90 13:30:58 GMT
References: <1990May8.222108.23839@bnrgate.bnr.ca>
Reply-To: net@tub.UUCP (Oliver Laumann)
Organization: Technical University of Berlin, Germany
Lines: 16

In article <1990May8.222108.23839@bnrgate.bnr.ca> mleech@bcarh342.bnr.ca (Marcus Leech) writes:
> Can someone explain to me the mechanism used by the BSD4.3 CSH
>   to implement file completion, given that, as far as I can tell,
>   it runs the TTY in COOKED mode?  I have Apollos and HP9000/3xx
>   with the BSD4.3 CSH.  Both systems have file completion, but I
>   can't figure out HOW the CSH gets to see the ESC char given that
>   it runs the TTY in COOKED mode.  Someone care to enlighthen me?

It's implemented by means of the secondary input delimiter character
(`t_brkc' in the `tchars' structure; see "man 4 tty").  When this field
is set to a character other than `-1', this character acts the same way
newline does (i.e. it is echoed, and then the current input line is made
available to the program).

--
Oliver Laumann     net@TUB.BITNET     net@tub.cs.tu-berlin.de     net@tub.UUCP