Dan_Jacobson@ATT.COM (10/09/90)
[he wanted help on flow control]
Here's one of our brilliant local help files, only tested on UNIX, not VMS.
From: Dan Jacobson
Subject: Control-S Control-Q (X-on/X-off flow control protocol) problems
Date: 10/1990
On many system/network/terminal combinations there is difficulty
passing the characters Control-S and Control-Q, as they are used by
the computer/terminal to tell one side to start/stop sending
characters to prevent buffer overflow.
Early on I decided to always use Control-] for Control-S, and
Control-\ for Control-Q (set in my ".emacs" file), (i.e. I hit a
Control-] and GNU Emacs interprets it at a low level internally as a
Control-S, I don't hit Control-S on my keyboard anymore... same with
the Control-\ Control-Q pair) here's how:
(setq term-setup-hook
(function (lambda ()
;always use C-] for C-s, and C-\ for C-q for uniformity, even though
;some terminals and baud rates do not have a "flow control" problem
(set-input-mode nil t)
(let ((the-table (make-string 128 0)) (i 0))
(while (< i 128)
(aset the-table i i)
(setq i (1+ i)))
(aset the-table ?\C-\\ ?\C-q)
(aset the-table ?\C-\] ?\C-s)
(setq keyboard-translate-table the-table))
(message "Using C-] for C-s, and C-\\ for C-q")
)))
Though I liked control-] as a remap choice because it is usually in
the same spot on most keyboards, I am having second thoughts, as it is
often the "telnet" program's default enter-command-mode character
(telnet is one remote login method). And as of this writing, telnet
doesn't read a ".telnetrc" file to allow changes at start-up time...
--
Dan_Jacobson@ATT.COM Naperville IL USA +1 708-979-6364palkovic@linac.fnal.gov (palkovic@linac.fnal.gov (John A. Palkovic)) (10/09/90)
In article <1990Oct8.215804.11443@cbnewse.att.com> danj1@ihlpa.att.com writes: >[he wanted help on flow control] [he posted a solution] From the FAQL posted once upon a time in gnu.emacs, this one rebinds the keys to C-. and C-\, so it won't hose telnet. It also gives you the capability to undo. Of course it can be hacked to rebind the keys to something else... -- (defun evade-flow-control () "Replace ^S with ^\\ and ^Q with ^." (interactive) (let ((the-table (make-string 128 0))) (let ((i 0)) (while (< i 128) (aset the-table i i) (setq i (1+ i)))) ;; Swap ^S and ^\ (aset the-table ?\034 ?\^s) (aset the-table ?\^s ?\034) ;; Swap ^Q and ^^ (aset the-table ?\036 ?\^q) (aset the-table ?\^q ?\036) (setq flow-control-evasion t) (setq keyboard-translate-table the-table))) (defun unevade-flow-control () "Return ^S and ^Q to their normal mappings." (interactive) (cond ((null flow-control-evasion) nil) (t ;;; Swap back ^S (aset keyboard-translate-table ?\034 ?\034) (aset keyboard-translate-table ?\^s ?\^s) ;; Swap ^Q and ^^ (aset keyboard-translate-table ?\036 ?\036) (aset keyboard-translate-table ?\^q ?\^q) (setq flow-control-evasion nil)))) -- John Palkovic {att,uunet}!tellab5!linac!palkovic palkovic@linac.fnal.gov, {att,uunet}!linac.fnal.gov!palkovic works too. Home: linac!jpmac!johnny
puglia@cunixa.cc.columbia.edu (Paul Puglia) (10/10/90)
In article <1990Oct8.215804.11443@cbnewse.att.com> danj1@ihlpa.att.com writes: >Though I liked control-] as a remap choice because it is usually in >the same spot on most keyboards, I am having second thoughts, as it is >often the "telnet" program's default enter-command-mode character >(telnet is one remote login method). And as of this writing, telnet >doesn't read a ".telnetrc" file to allow changes at start-up time... >-- >Dan_Jacobson@ATT.COM Naperville IL USA +1 708-979-6364 If you are running ksh, you can alias the telnet command with the the command line flags that will move the enter-command-mode to another key. I use a similar trick on VMS with symbols to move the interupt remote process character from ^C (on my telnet) to a less annoying character. Paul Puglia Dept. of Civil Engineering Columbia University puglia@cucevx.civil.columbia.edu