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From: nagy%bsndbg.hepnet@LBL.ARPA.UUCP
Newsgroups: mod.computers.vax
Subject: ^C to cancel ^S instead of ^Q...  No!
Message-ID: <8702211604.AA08111@ucbvax.Berkeley.EDU>
Date: Sat, 21-Feb-87 09:46:56 EST
Article-I.D.: ucbvax.8702211604.AA08111
Posted: Sat Feb 21 09:46:56 1987
Date-Received: Sat, 21-Feb-87 20:36:07 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
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Approved: info-vax@sri-kl.arpa

The XON/XOFF characters are handled directly in the terminal driver,
or directly in the hardware (DMF32s and DECServers for instance).
Thus there is no possibility of getting ^C to behave like ^Q.  In addition,.
the ^C is passed by the terminal driver to higher level software.
DCL interprets the ^C and you can write your own program to trap
the ^C like MONITOR does (i.e., the ^C in MONITOR gets you to the MONITOR>
prompt, not back to DCL).

I'm not sure if the ^Z is caught in the terminal driver and turned into
an end-of-file or not (I would not be surprised if it was).

Note: All this can be disabled by setting your terminal to PASSALL (or
PASSTHRU if you still want XON/XOFF), but then you lose nice things
like command recall and line editing, etc.