Date: Sun, 30 Apr 2017 20:20:00 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 218943] /bin/sh regression? with doubly negated numbers Message-ID: <bug-218943-8-znhDl76fHb@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-218943-8@https.bugs.freebsd.org/bugzilla/> References: <bug-218943-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D218943 John Hein <z7dr6ut7gs@snkmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|New |Closed Resolution|--- |Works As Intended --- Comment #2 from John Hein <z7dr6ut7gs@snkmail.com> --- I see. Not that bash is necessarily a good model to follow, but it supports the --= /++ operators and is able to distinguish between the context when it's an opera= tor and a double negation. % bash -c 'var=3D--123; echo $(($var)); echo $((--var))' 123 122 % bash -c 'echo $((--123))' 123 Same with/without POSIXLY_CORRECT. But thanks for the explanation. Closing this as 'works as intended'. I gu= ess sh(1) could be enhanced to distinguish - from context - between the operator and a double negation (and only throw the error for the former case). I'm = sure it's quite tricky. --=20 You are receiving this mail because: You are the assignee for the bug.=
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