Message-Id: <9703111850.AA26292@hum.amu.edu.pl> Comments: Authenticated sender is From: "Mark Habersack" Organization: KGB To: "Matthias Paul" Date: Tue, 11 Mar 1997 19:42:04 +0100 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Subject: Re: [opendos] OD case sensitivity Reply-To: grendel AT ananke DOT amu DOT edu DOT pl Cc: opendos AT mail DOT tacoma DOT net In-Reply-To: <348B2FE71E1@ibh.rwth-aachen.de> Sender: owner-opendos AT mail DOT tacoma DOT net Precedence: bulk On 11 Mar 97 (at 15:46) Matthias Paul became famous by saying: > [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=|OFF With ON being the default. > [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). Sure you can! Just use the '_shell' variable! It always contains the current shell's nesting level with 0 being the primary shell: iff "%_SHELL"=="0" then c:\opendos\command.com /C EXIT endiff and it does the trick. > Of course, you can improve my example by adding: > > IF "4"=="%@Eval[2+2]%" IF ""=="%Os%" c:\opendos\command.com /C EXIT BTW. The VAR variable *is not* set on startup as described in DOSBOOK. OD just sets the OS variable to 'OPENDOS' ******************************************************** For when it comes down to it there's no use trying to pretend. For when it comes down to there's no one really left to blame - blame it on me, you can blame it on me We're just sugar mice on the rain. ---- Visit http://ananke.amu.edu.pl/~grendel