Date: Fri, 28 Oct 94 11:04:52 EDT
From: peprbv AT cfa0 DOT harvard DOT edu (Bob Babcock)
To: itz AT crl DOT com
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: system() ?
Reply-To: babcock AT cfa DOT harvard DOT edu

> What exactly does system() do ? Is there a way to make it spawn something 
> other than COMMAND.COM, for instance, by setting COMSPEC in the 
> environment?

If the argument to system() is an exe or com file with no redirection, go32
spawns it directly, otherwise it calls the Turbo C system() function.
(Details of this logic were changed not too long ago; this is what 1.12
does.)  Turbo C's system() uses COMSPEC, so it should work with alternate
command processors.  The code which handles the interrupt is in
go32src/exphdlr.c.  Search for "system" and the 2nd hit should be what you
want.