From: "Matthias Paul" <MPAUL AT ibh DOT rwth-aachen DOT de>
Organization:  IBH, RWTH-Aachen
To: opendos AT mail DOT tacoma DOT net
Date:          Tue, 11 Mar 1997 15:46:58 GMT+0100
Subject:       Re: [opendos] OD case sensitivity
Reply-to: Matthias DOT Paul AT post DOT rwth-aachen DOT de
Message-ID: <348B2FE71E1@ibh.rwth-aachen.de>
Sender: owner-opendos AT mail DOT tacoma DOT net
Precedence: bulk

Hi!

On Fri, 7 Mar 1997 Mark Habersack replied to me:


[IBMBIO passes pre-environment to command processor]
> >   Some may call this a bug, but it's also a feature, if it's known...
> >   (Mind, that a pre-environment was introduced with DR DOS 6.0, long
> >   before MS-DOS 6.0 did it rather differently).
> I consider this to be a feature, but also a cause for headaches for some,
> unexperienced, users. So, the conclusion is that the feature should be made
> optional.

I agree.  It should be made selectable by a new CONFIG.SYS directive 
like

 FORCEENVUPCASE=<ON>|OFF
 
There are some other pre-environmental issues that should be put 
into OpenDOS (FYI, refer my SETENV.ZIP package...  Beside other 
things, I was willing to take this job, if I find the time for it...)


[4DOS]
> >   4DOS & NDOS do not evaluate the pre-environment, when they build
> >   the master-environment from it.  They just take it over.  
> >   So, strange side effects appear with these command processors, 
> >   if you don't upstring all your CONFIG.SYS SET= directives.
> > 
> >   To avoid some of the problems, 4DOS & NDOS have with DR DOS style
> >   pre-environments, you should insert:
> > 
> >    IF "4"=="%@Eval[2+2]%" c:\opendos\command.com /C EXIT
> Or just put it in the 4start.btm

No, you can't do that, since this would be executed every time, you
spawn into a new shell.  AUTOEXEC.BAT normally is executed only 
once... ;-)  (else we'd to do some more precautions here).

Of course, you can improve my example by adding:

IF "4"=="%@Eval[2+2]%" IF ""=="%Os%" c:\opendos\command.com /C EXIT

Bye,

 Matthias
 


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