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Date: Sat, 25 Mar 2017 07:21:03 +0100
From: Sebastian Gniazdowski <psprint@zdharma.org>
To: Peter Stephenson <p.stephenson@samsung.com>, zsh-users@zsh.org
Message-ID: <etPan.58d60c4f.6b8b4567.17199@MacMini.local>
In-Reply-To: <20170324114903.5bce97c1@pwslap01u.europe.root.pri>
References: <CGME20170322075332epcas3p4a32050e48ad0f94be13134b560f17715@epcas3p4.samsung.com>
 <etPan.58d22d29.6b8b4567.10ab3@MacMini.local>
 <20170322095212.2ff2dec8@pwslap01u.europe.root.pri>
 <etPan.58d5027c.6b8b4567.166db@MacMini.local>
 <20170324114903.5bce97c1@pwslap01u.europe.root.pri>
Subject: Re: How to substitute empty array element, or empty string
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On 24 marca 2017 at 12:50:43, Peter Stephenson (p.stephenson=40samsung.co=
m) wrote:=C2=A0
> =5B=5B '' =3D * =5D=5D && echo yes
>=C2=A0
> echoes =22yes=22 in bash as well as zsh, so =22*=22 can match an empty =
string,
> and I don't think the / and // operators are standardised.

Checked that in ksh:

% a=3D=22=22; echo =24=7Ba//*/x=7D
x
%=C2=A0a=3D( =22=22 );=C2=A0echo =24=7Ba=5B=40=5D//*/x=7D
x
% =5B=5B =22=22 =3D * =5D=5D && echo yes
yes

It can look like // behavior was bash-driven, and in bash there is the om=
ission for =22=22.

--=C2=A0
Sebastian Gniazdowski
psprint =5Bat=5D zdharma.org