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Message-ID: <5688276D.9000009@inlv.org>
Date: Sat, 02 Jan 2016 20:39:25 +0100
From: Martijn Dekker <martijn@inlv.org>
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To: zsh-workers@zsh.org
Subject: Re: [BUG] functions can't create global readonly variables
References: <56874393.1010001@inlv.org> <160101202710.ZM1896@torch.brasslantern.com>
In-Reply-To: <160101202710.ZM1896@torch.brasslantern.com>
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Bart Schaefer schreef op 02-01-16 om 05:27:
> On Jan 2,  4:27am, Martijn Dekker wrote:
> } I don't know if this is intended behaviour for native zsh mode; the
> } 'zshbuiltins' man page does not mention anything about this.
> 
> Of course it does:

I blame insufficient caffeination at the time of writing.

> } But it is certainly a bug for POSIX/'emulate sh' mode.
> 
> I think it's undefined behavior for POSIX/'emulate sh'.  Certainly bash
> agrees with us:
> 
> $ foo() { typeset -r bar; typeset -p bar; }
> $ foo
> declare -r bar
> $ typeset -p bar
> bash: typeset: bar: not found

But 'typeset' is not POSIX. When using the POSIX 'readonly' special
builtin, bash acts like other POSIX shells and unlike zsh:

$ foo() { readonly bar=baz; typeset -p bar; }
$ foo
declare -r bar="baz"
$ typeset -p bar
declare -r bar="baz"

Thanks,

- M.