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Re: for ... in ... do ignores escape characters


From: Andreas Schwab
Subject: Re: for ... in ... do ignores escape characters
Date: Fri, 18 Apr 2008 17:19:26 +0200
User-agent: Gnus/5.110008 (No Gnus v0.8) Emacs/22.1 (gnu/linux)

"Dave Rutherford" <address@hidden> writes:

> Now note the difference between:
>
> $ for w in "`foo`"; do echo $w; done
> sony apple hewlett packard
>    and
> $ for w in `foo`; do echo "$w"; done
> sony
> apple
> hewlett
> packard
>    and
> $ for w in "`foo`"; do echo "$w"; done
> sony
> apple
> hewlett packard
>
> Why the first one does that I'm not sure, but it's the last one you want.

Both the first and the third example calls echo only once, but in the
first example the argument to echo is word splitted.  In the second
example the word splitting is done on the expansion of `foo`.

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."




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