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From: DervishD <zsh@dervishd.net>
To: Com MN PG P E B Consultant 3 <mn-pg-p-e-b-consultant-3.com@siemens.com>
Cc: zsh-users Mailinglist <zsh-users@sunsite.dk>
Subject: Re: Can I do without "eval" here?
Date: Tue, 14 Mar 2006 10:16:19 +0100	[thread overview]
Message-ID: <20060314091619.GA5940@DervishD> (raw)
In-Reply-To: <6F0CB04509C11D46A54232E852E390AC01004881@MCHP7R6A.ww002.siemens.net>

    Hi Ronald :)

 * Com MN PG P E B Consultant 3 <mn-pg-p-e-b-consultant-3.com@siemens.com> dixit:
> What I don't like in this example, is the usage of eval. Although
> it is harmless in this particular case, the filename 'foo', which
> is hardcoded here, comes in as a parameter too in my real
> application, and this means that it undergoes one level of
> evaluation too, which would yield wrong results when it contains,
> say, a $ character.

    Try this:

    eval whatevercommand \''$file'\'

    As for doing the same without eval, it can be done, too, by
setting the sh_word_split option and tweaking, or simply with this:

    options=("-x")
    (($#)) && options=("-y" "$1")
    CMD $options[1] $options[2] foo

    If "foo" comes from a parameter, just use that parameter instead
of "foo".

    I haven't tested the solution, so it may need some refinement,
but it should do.

    Raúl Núñez de Arenas Coronado

-- 
Linux Registered User 88736 | http://www.dervishd.net
http://www.pleyades.net & http://www.gotesdelluna.net
It's my PC and I'll cry if I want to... RAmen!


  reply	other threads:[~2006-03-14  9:15 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-14  9:03 Com MN PG P E B Consultant 3
2006-03-14  9:16 ` DervishD [this message]
2006-03-14  9:22   ` Michal Politowski
2006-03-14  9:42     ` DervishD

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