Date: Fri, 21 Sep 2001 21:26:09 -0700 From: Julian Elischer <julian@elischer.org> To: Mario Sergio Fujikawa Ferreira <lioux@uol.com.br> Cc: freebsd-hackers@freebsd.org Subject: Re: bug in shell `` expansion code? Message-ID: <3BAC12E1.6D87CB57@elischer.org> References: <20010922011302.A44620@exxodus.fedaykin.here>
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Mario Sergio Fujikawa Ferreira wrote:
>
> Hi,
>
> While working on a make .mk code, I and Chris Wasser (TDF
> on IRC) came across an interesting behavior:
>
> sh -c 'TDF="echo a && echo b";for i in `${TDF}`; do echo "i:$i"; done'
>
> This should return:
>
> i:a
> i:b
>
> instead, it returns:
>
> i:a
> i:&&
> i:echo
> i:b
>
> If this is not a bug, how do we get it working?
try:
julian@jules:sh -c 'TDF="echo a && echo b";for i in `eval ${TDF}`; do echo
"i:$i"; done'
i:a
i:b
the trouble is that TDF is interpretted as a single string including spaces
where you want to interpret is as a list of separate words
>
> Regards,
>
> --
> Mario S F Ferreira - UnB - Brazil - "I guess this is a signature."
> lioux at ( freebsd dot org | linf dot unb dot br )
> flames to beloved devnull@someotherworldbeloworabove.org
> feature, n: a documented bug | bug, n: an undocumented feature
>
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