Re: ksh Emulation Not Clearing Envariables

[Peter Stephenson <pws@csr.com>]

Chris Jepeway wrote:
> POSIX wants the envariable to persist across invocations
> of the function "e"?  That seems...counter-intuitive.
> I thought the whole point of
> 
> 	VAR=val cmd
> 
> was as a shortcut to
> 
> 	export VAR=val ; cmd ; unset VAR
> 
> nevermind dovetailing with execve()'s env pointer.
> 
> Sure, in this case, cmd is a shell function, but...well...so what?
> Eeesh.  POSIX.
> 
> But, anyways, the command is "emulate ksh" not "emulate posix".
> Any chance this behavior could change to follow ksh?  ksh88 as
> distributed w/ Solaris-8 is what I'm using for comparison.

I can't find it in POSIX now, but it's controlled by the option
posix_builtins.  We could turn that off for ksh, but I'd like to know if
we really ever need to have it on by default.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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