From: "Richard Hartmann" <richih.mailinglist@gmail.com>
To: "Peter Stephenson" <p.w.stephenson@ntlworld.com>
Cc: "Zsh hackers list" <zsh-workers@sunsite.dk>
Subject: Re: arithmetic operator precedence
Date: Tue, 17 Jun 2008 11:19:40 +0200 [thread overview]
Message-ID: <2d460de70806170219k12ff4cadn441b52c48bf8076f@mail.gmail.com> (raw)
In-Reply-To: <20080616144211.276fb0e3@pws-pc>
On Mon, Jun 16, 2008 at 15:42, Peter Stephenson
<p.w.stephenson@ntlworld.com> wrote:
> That's an interesting point for C_PRECEDENCES since I was trying to get
> it behave as much as possible like Perl. What does anyone else think?
Being unsure myself, I did some somewhat extensive research. The only
mathematically correct way of doing this is
-3**2 = -9
(-3)**2 = 9
On the other hand, compability with the other shells is A Good Thing,
especially as this is the kind of syntax change that can break a script
in a very, very evil and hard-to-debug way.
Still, all things considered, I would say the only possible way to go is to
use the mathematically correct syntax. Both options are bad, in a way,
but this is the better one.
Richard
next prev parent reply other threads:[~2008-06-17 9:19 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-12 9:57 Stephane Chazelas
2008-06-12 13:12 ` Mikael Magnusson
2008-06-12 13:40 ` Peter Stephenson
2008-06-12 14:47 ` Bart Schaefer
2008-06-12 15:01 ` Stephane Chazelas
2008-06-16 8:17 ` Vincent Lefevre
2008-06-16 8:07 ` Vincent Lefevre
2008-06-16 13:42 ` Peter Stephenson
2008-06-16 13:59 ` Stephane Chazelas
2008-06-16 14:33 ` Vincent Lefevre
2008-06-17 9:19 ` Richard Hartmann [this message]
2008-06-17 9:45 ` Stephane Chazelas
2008-06-17 10:24 ` Richard Hartmann
2008-06-17 10:24 ` Richard Hartmann
2008-06-17 10:38 ` Stephane Chazelas
2008-06-17 10:43 ` Peter Stephenson
2008-06-17 11:28 ` Vincent Lefevre
2008-06-17 11:46 ` Peter Stephenson
2008-06-17 12:05 ` Vincent Lefevre
2008-06-19 9:37 ` Jun T.
2008-06-19 9:54 ` Stephane Chazelas
2008-06-19 16:00 ` Vincent Lefevre
2008-06-19 16:20 ` Stephane Chazelas
2008-06-19 17:14 ` Vincent Lefevre
2008-06-19 9:58 ` Peter Stephenson
2008-06-19 12:29 ` Richard Hartmann
2008-06-19 16:04 ` Vincent Lefevre
2008-06-19 16:10 ` Mikael Magnusson
2008-06-19 16:27 ` Stephane Chazelas
2008-06-19 17:25 ` Vincent Lefevre
2008-06-19 17:20 ` Vincent Lefevre
2008-06-17 10:45 ` Richard Hartmann
2008-06-17 11:38 ` Vincent Lefevre
2008-06-17 11:19 ` Vincent Lefevre
2008-06-17 11:57 ` Stephane Chazelas
2008-06-17 12:35 ` Vincent Lefevre
2008-06-17 12:46 ` Stephane Chazelas
2008-06-17 13:02 ` Vincent Lefevre
2008-06-17 13:20 ` Stephane Chazelas
2008-06-17 14:33 ` Vincent Lefevre
2008-06-17 14:53 ` Stephane Chazelas
2008-06-17 15:49 ` Vincent Lefevre
2008-06-17 14:35 ` Stephane Chazelas
2008-06-17 15:05 ` Vincent Lefevre
2008-06-17 10:54 ` Vincent Lefevre
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