Subject: /bin/sh problem with field splitting and parameter expansion
To: NetBSD current <current-users@netbsd.org>
From: Nicolas Joly <njoly@pasteur.fr>
List: current-users
Date: 06/07/2004 19:55:35
Hi,
I just noticed some field splitting problems after parameter
extension, in a /bin/sh `for' loop ...
It seems that there is no field splitting with default value :
njoly@lanfeust [~]> /bin/sh
$ for i in a b c; do echo $i; done
a
b
c
$ for i in ${x-a b c}; do echo $i; done
a b c
$ x='x y'
$ for i in ${x-a b c}; do echo $i; done
x
y
$
But ksh, give another result, which looks better to me :
njoly@lanfeust [~]> /bin/ksh
$ for i in a b c; do echo $i; done
a
b
c
$ for i in ${x-a b c}; do echo $i; done
a
b
c
$ x='x y'
$ for i in ${x-a b c}; do echo $i; done
x
y
njoly@lanfeust [~]> uname -a
NetBSD lanfeust.sis.pasteur.fr 2.0F NetBSD 2.0F (LANFEUST) #5: Fri Jun 4 10:09:03 CEST 2004 njoly@lanfeust.sis.pasteur.fr:/local/src/NetBSD/obj/amd64/sys/arch/amd64/compile/LANFEUST amd64
Did i missed something, or this a bug ?
Thanks in advance,
Regards.
--
Nicolas Joly
Biological Software and Databanks.
Institut Pasteur, Paris.