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sm-sorcery - Re: [SM-Sorcery]$IFS

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  • From: Sergey A Lipnevich <sergeyli AT pisem.net>
  • To: Dufflebunk <dufflebunk AT dufflebunk.homeip.net>
  • Cc: sm-sorcery AT lists.ibiblio.org
  • Subject: Re: [SM-Sorcery]$IFS
  • Date: Mon, 21 Oct 2002 08:09:04 -0400

See my note on this in the ChangeLog. That's a harsh reality :-( of bash, but it it possible to circumvent it in many specific cases.

Dufflebunk wrote:

One odd side effect that I just found is that:
echo $foo | while read i ; do
#This is all executed in a sub shell!
done

Meaning environment modified inside the loop will not persist after the
loop. Example:
a="a"
echo -e "a\nb" | while read i ; do a="${a}${i}" echo $a
done
echo "Final: $a"

Here is the output:
aa
aab
Final: a

Not what you would expect. Although it makes sense when you look at it
closely, it still surprised me, so I though it might help others too.


On Sat, 2002-10-19 at 01:10, Sergey A. Lipnevich wrote:

Hi All,

In my working copy I have managed to ridden cast, libdepends, libmisc, and libcodex, of $IFS. It all looks good and I'm doing /a lot/ of tests on virtually all my changes. Any objections to committing this sometime tomorrow?
Also, it solves the following bug in sorcery 20021018: when there is an optional_depends with the spell that's not installed, no other optional_depends below it get called.
And it looks much better without $IFS ;-).

Sergey.

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