From: Michael Hwang <michael.a.hwang@gmail.com>
To: Mikael Magnusson <mikachu@gmail.com>
Cc: zsh workers <zsh-workers@zsh.org>, brandon@ifup.org
Subject: Re: [[ 0 =~ 1 || 1 = 0 ]] returns true
Date: Sat, 9 Oct 2010 16:06:39 -0400 [thread overview]
Message-ID: <AANLkTim6KnxvKXbJmUQrUqm+mCBMU=y2maB0PitOfBfC@mail.gmail.com> (raw)
In-Reply-To: <AANLkTi=G-8Hro4iqv_cNorbRiJCxXt-XmFifeyBNwLof@mail.gmail.com>
% set -x
% [[ 0 =~ 1 || 1 = 0 ]]
+zsh:2> [[ 0 -regex-match 1 || ! 1 == 0 ]]
% [[ 0 =~ 1 || 1 == 1 || 1 = 0 ]]
+zsh:3> [[ 0 -regex-match 1 || ! 1 == 1 ]]
% [[ 0 =~ 1 || 1 == 1 || 1 = 1 || 1 = 1 || 1 = 1 ]]
+zsh:4> [[ 0 -regex-match 1 || ! 1 == 1 ]]
It appears that zsh thinks it needs to invert the second conditional
expression. Also, zsh seems to drop more than two conditional
expressions.
Michael Hwang
On Sat, Oct 9, 2010 at 1:29 PM, Mikael Magnusson <mikachu@gmail.com> wrote:
> % [[ 1 =~ 1 && 0 = 1 ]]; echo $?
> 0
> % [[ 1 =~ 1 || 0 = 1 ]]; echo $?
> 0
> % [[ 1 =~ 0 || 0 = 1 ]]; echo $?
> 0
> % [[ 1 =~ 0 || 1 = 1 ]]; echo $?
> 1
> % [[ 1 =~ 1 || 1 = 1 ]]; echo $?
> 0
> % [[ 1 =~ 1 && 1 = 1 ]]; echo $?
> 1
> % [[ 1 =~ 0 && 1 = 1 ]]; echo $?
> 1
>
> Something seems to be screwy with =~ and &&/||, on its own it appears fine.
>
> --
> Mikael Magnusson
>
next prev parent reply other threads:[~2010-10-09 20:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-09 17:29 Mikael Magnusson
2010-10-09 20:06 ` Michael Hwang [this message]
2010-10-09 22:17 ` Phil Pennock
2010-11-02 16:34 ` Brandon Philips
2010-11-02 20:41 ` Mikael Magnusson
2010-11-02 23:37 ` Phil Pennock
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