From: Sebastian Stark <seb-zsh@biskalar.de>
To: "Jérémie Roquet" <arkanosis@gmail.com>
Cc: zsh-users@zsh.org
Subject: Re: double quoted expansion question
Date: Fri, 7 Sep 2012 16:36:09 +0200 [thread overview]
Message-ID: <5D910C9F-3338-49A2-9904-1EFF95C29050@biskalar.de> (raw)
In-Reply-To: <CAFOazAOAis5Y3H5rEmEe8pWZwcRt4oR4TuaOc6ycets_wPxfkQ@mail.gmail.com>
Am 07.09.2012 um 14:54 schrieb Jérémie Roquet:
>>> print ${(s:,:uo)${(j:,:)${${(f)servers}//* /}}}
>>
>> I'm not 100 % sure, but I suppose the quotes prevents the shell from
>> splitting your string on $IFS, so you only have *one* string, and the
>> “//* /" expression suppresses everything before the last space,
>> leaving only the tags of the last line.
>
> No, this has nothing to do with $IFS actually, but you still have one string:
>
> $ a=(za zb zc zd)
> $ echo ${a/z/v}
> va vb vc vd
> $ echo "${a/z/v}"
> va zb zc zd
Thanks, I just figured that this must be the kind of brain damage they mention in zshexpn(1), and using this:
$(awk '{print $2}' <<<$servers | tr , '\n' | sort -u | tr '\n' ' ')
seems like a much saner way to achieve the same :) But not very zshy...
Sebastian
next prev parent reply other threads:[~2012-09-07 14:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-07 12:31 Sebastian Stark
2012-09-07 12:47 ` Jérémie Roquet
2012-09-07 12:54 ` Jérémie Roquet
2012-09-07 14:36 ` Sebastian Stark [this message]
2012-09-07 14:41 ` Bart Schaefer
2012-09-07 15:43 ` Sebastian Stark
2012-09-08 5:38 ` Bart Schaefer
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