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From: ejnorman@uwmacc.UUCP (Eric Norman)
Newsgroups: comp.os.vms
Subject: Command procedure input
Message-ID: <1686@uwmacc.UUCP>
Date: Fri, 3-Jul-87 00:30:11 EDT
Article-I.D.: uwmacc.1686
Posted: Fri Jul  3 00:30:11 1987
Date-Received: Sat, 4-Jul-87 10:22:03 EDT
Reply-To: ejnorman@unix2.macc.wisc.edu (Eric Norman)
Organization: UW-Madison Academic Computer Center
Lines: 49

We have Eunice here.  One of the things you can do is define
the Eunice commands as foreign commands so that they can be
used directly from VMS, e.g.

  vi :== $eun_root:[usr.ucb]vi vi

This works fine; vi manages to do whatever is necessary to
read characters one at a time from the terminal.  However,
if I try to do it with a command procedure, e.g.

  $ vi := $eun_root:[usr.ucb]vi vi
  $ define/user_mode sys$input sys$command
  $ vi 'P1'
  $ exit

the terminal gets in the mode where nothing happens until
you whang the CR key.  I can get the terminal in what Eunice
(and Unix) calls "raw" mode by doing the Eunice "stty raw"
command first, but it's too raw; line-feeds sent by Eunice
don't get translated to carriage-return line-feeds.

The only way I've found that seems to work is to spawn the
blighter, e.g.

  $ vi := $eun_root:[usr.ucb]vi vi
  $ spawn/nolog vi 'P1'
  $ exit

Note, that this isn't just Eunice's vi; anything from Eunice
that wants the terminal in raw mode seems to work this way.
Evidently Eunice isn't doing something that EDT knows how
to do.

Anyway, the first thing I'd like to know is if there's anthing
I can do in a command procedure so that the terminal will end
up in the right mode.  If that's not possible, what do I need
to do in the code for the command so that I can execute it
from a command procedure?

Thanks,

Eric Norman
Internet:     ejnorman@unix2.macc.wisc.edu
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