Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!mcsun!ukc!dcl-cs!aber-cs!pcg
From: pcg@aber-cs.UUCP (Piercarlo Grandi)
Newsgroups: comp.emacs
Subject: Re: Emacs user-interface problem. uEmacs 3.10.
Summary: ^S -> ^\, ^Q -> ^^
Keywords: ^S ^Q
Message-ID: <1143@aber-cs.UUCP>
Date: 12 Oct 89 14:51:01 GMT
Reply-To: pcg@cs.aber.ac.uk (Piercarlo Grandi)
Organization: Dept of CS, UCW Aberystwyth
	(Disclaimer: my statements are purely personal)
Lines: 35

In article <7759@cg-atla.UUCP> fredex@cg-atla.UUCP (Fred Smith) writes:

    In article <6474@ficc.uu.net> peter@ficc.uu.net (Peter da Silva) writes:
    >I'm sure there's a standard answer to this, but what is the canonical
    >binding for search and quote when ^S and ^Q are co-opted by software
    >handshaking? 

    The other way was to provide built-in alternate bindings for those two keys.
    The alternate bindings for ^S were ^X-S and ESC-S. 

Well, the alternative that I use on all emacses and I have seen as usual in
most people's emacses is to have ^S mapped to ^\, and ^Q to ^^; there are
no traditonally emacsy commands bound to ^\ and ^^, and they have good
mnemonic value (^\ reminds me of slash-searching, and ^^ of the starting
character for control character representation).

Under GNU Emacs, instead of blithely binding search and quote to ^\ and ^^,
you are better off with something like:


 	(setq keyboard-translate-table
		"^I^J
	(set-input-mode nil t)

that exchanges ^\ with ^S and ^^ with ^Q, at the input routine level,
and enables ^S and ^Q for flow control.

As RMS says, it would be better if anybody had out-of-band flow control, not
one encoded in the data stream. There ought to be a law... :-> :-> (I think
that it would be easier to convert Apple to free software than to have
universal out-of-band flow control).
-- 
Piercarlo "Peter" Grandi           | ARPA: pcg%cs.aber.ac.uk@nsfnet-relay.ac.uk
Dept of CS, UCW Aberystwyth        | UUCP: ...!mcvax!ukc!aber-cs!pcg
Penglais, Aberystwyth SY23 3BZ, UK | INET: pcg@cs.aber.ac.uk