Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!leah!bingvaxu!consp04
From: consp04@bingvaxu.cc.binghamton.edu (Daniel F. Boyd)
Newsgroups: comp.emacs
Subject: Setting the Mark in emacses
Keywords: set mark ctl-space
Message-ID: <2308@bingvaxu.cc.binghamton.edu>
Date: 20 Jul 89 16:07:39 GMT
Organization: SUNY Binghamton, NY
Lines: 34

When using GNU Emacs on our VAX 8530, with a VT220 terminal,
I can quickly and easily set the mark with control-spacebar.
The terminal likes to send a ^@ (which I think is actually
ASCII 0; a NULL) when you hit control-space.

I have yet to see any Emacs for the PC set the mark with
control-spacebar.  I know that in order to trap
control-space, you have to look at the BIOS shift byte (with
which you could tell not only if the control, shift, or alt
keys are pressed, but also left or right shift key, left or
right control on 101-key keyboards, or whatever.

I also have yet to see terminal emulation software that
sends a ^@ when I hit control-space.

Whenever I hit C-SPC I get a space on the screen.

MS-Kermit seems to be able to read the BIOS shift byte; you
take the scancode of the key and add 512 for shift, 1024 for
Control, and 2048 for Alt to get the key number for a SET
KEY statement in a kermit script.  It works fine for
Alt-this and Control-that, but it is unable to trap
shift-space, control-space, and alt-space.

Am I crazy, or is there a conspiracy?  I want control-space!

Does Freemacs use control-space to set the mark, or is that
a lost hope?


-- 
Daniel F. Boyd				| "If it wasn't for disappointments,
Student Consultant, SUNY Binghamton     |  I wouldn't have any appointments."
consp04@bingvaxu.cc.binghamton.edu	| 	-- They Might Be Giants