Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!uwm.edu!csd4.csd.uwm.edu!jgreco
From: jgreco@csd4.csd.uwm.edu (Joe Greco)
Newsgroups: comp.sys.cbm
Subject: Re: VT100 emulations and EMACS
Message-ID: <634@uwm.edu>
Date: 27 Oct 89 14:23:03 GMT
References: <POSTNEWS24781@NADC.ARPA>
Sender: news@uwm.edu
Reply-To: jgreco@csd4.csd.uwm.edu (Joe Greco)
Organization: Interstellar Telephone, Telegraph, and Telepath, Inc.
Lines: 55

In comp.sys.cbm article <POSTNEWS24781@NADC.ARPA>, prindle@NADC.ARPA (Frank Prindle) wrote:
]Note: no C64/C128 VT100 emulation that in any way requires flow control (and
]as far as I know, they all do) to allow screen updates to keep up with the
]baud rate used (1200 and up) will work properly with EMACS *unless*:
]
]EMACS is configured to do 2 things it doesn't normally do:
]
]1) Run with host flow control enabled (for UNIX implementations
]this requires some magical incantation which puts the tty
]driver into CBREAK (vs. RAW) mode).
]
]2) Avoid the characters ^S and ^Q as editing commands (this
]requires binding these commands to some other key sequence
]and unbinding ^S and ^Q from any commands).

Our school's PACX switch relies entirely on software flow control,
so we have patched our default .emacs file as so to fix this:


;; replace C-s with C-\ in a much more general way so that C-\ can be typed
;; for every instance of C-s. It is at such a low level that emacs even thinks
;; that you typed a C-s.  replace C-s with C-\  ,  globally
;; this disables any command which uses C-\ I believe there are two
;; note that position \034(octal) which is C-\ is switched with \023(octal)
;; which is C-s

(setq keyboard-translate-table "\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\023\035\036\037 !\042#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\134]^_`abcdefghijklmnopqrstuvwxyz{|}~\177")


	;; change ctrl-q so it can be used as flow control
	;; remap C-q tp ESC `

(global-unset-key "\C-q")
(global-set-key "\e`" 'quoted-insert)
(setq trim-versions-without-asking t)

	;; change input mod to CBREAK mode for C-s C-q
	;; emacs will never see C-s, C-q
(set-input-mode nil t)

	;; change help command from C-h to ESC ?
	;; so we can use C-h for backspace
(global-unset-key "\C-h")
(global-set-key "\e?" 'help-command)

	;; set backspce to delete a char same as DEL
(global-set-key "\C-h" 'delete-backward-char)

These changes do a little more than just ^S/^Q, but they are all useful.

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