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Date: Wed, 14 Aug 2024 11:28:48 -0400
From: Greg Wooledge <greg@wooledge.org>
To: =?utf-8?B?T8SfdXo=?= <oguzismailuysal@gmail.com>
Cc: Robert Elz <kre@munnari.oz.au>, Marc Chantreux <mc@unistra.fr>,
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Subject: Re: Question on $@ vs $@$@
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On Wed, Aug 14, 2024 at 17:58:15 +0300, Oğuz wrote:
> On Wed, Aug 14, 2024 at 5:23 PM Robert Elz <kre@munnari.oz.au> wrote:
> > However, as ksh93 makes "" from this
> > expansion, and so probably ksh88 might have done as well
> 
> No, both Sun and SCO variants expand "$@$@" to zero fields when $# is 0.

HP-UX 10.20 as well:

# set --
# printf '<%s> ' START "$@" END; echo
<START> <END>
# printf '<%s> ' START "$@$@" END; echo
<START> <END>
# uname -a
HP-UX vandev B.10.20 A 9000/778 2000153729 two-user license