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Message-ID: <56CF0718.8060708@inlv.org>
Date: Thu, 25 Feb 2016 14:52:24 +0100
From: Martijn Dekker <martijn@inlv.org>
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To: zsh-workers@zsh.org
CC: Peter Stephenson <p.stephenson@samsung.com>
Subject: Re: [BUG] Sticky-sh POSIX_TRAPS are function-local
References: <56C15DF1.8080405@inlv.org> <20160216095744.52cb8389@pwslap01u.europe.root.pri> <56C3B2E7.1090806@inlv.org> <20160225115339.7688264a@pwslap01u.europe.root.pri>
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Peter Stephenson schreef op 25-02-16 om 12:53:
> I think this makes nested native mode EXIT traps work while preserving
> a global POSIX mode EXIT trap.

It's nearly there. The new test case in C03traps.ztst succeeds.

But if a function defined with sticky emulation sets a POSIX trap, and
that function is called from native zsh, then the old behaviour returns
and a subsequent function-local trap wipes out the global POSIX trap. So
this still kills my POSIX library functions that set a trap.

New test script that does not succeed yet:

#! Src/zsh -f
echo entering program
emulate sh -c 'spt() { trap "echo POSIX exit trap triggered" EXIT; }'
fn() {
   trap "echo native zsh function-local exit trap triggered" EXIT
   echo entering native zsh function
}
spt
fn
echo exiting program

Expected output is identical to that of the C03traps.ztst test case.

Many thanks,

- M.