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Re: Lack of quotes causes IFS to be ignored for "${arr[*]}" during assig
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From: |
Dan Douglas |
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Subject: |
Re: Lack of quotes causes IFS to be ignored for "${arr[*]}" during assignments |
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Date: |
Thu, 29 Aug 2013 13:38:28 -0500 |
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User-agent: |
KMail/4.11 (Linux/3.10.1-pf+; KDE/4.11.0; x86_64; ; ) |
On Thursday, August 29, 2013 01:03:20 PM DJ Mills wrote:
> $(arr=(foo bar baz); IFS=:; str=${arr[*]}; echo "$str")
> foo bar baz
> $ (arr=(foo bar baz); IFS=:; str="${arr[*]}"; echo "$str")
> foo:bar:baz
>
> Note that the same thing does not occur for "$*":
> $ (set -- foo bar baz; IFS=:; str=$*; echo "$str")
> foo:bar:baz
> $ (set -- foo bar baz; IFS=:; str="$*"; echo "$str")
> foo:bar:baz
>
> I would expect the behavior of the two to be identical.
>
> $ echo "$BASH_VERSION"
> 4.2.45(2)-release
>
> It also occurs in 4.2.45(1)-release and 3.2.51(1)-release.
This was this issue:
http://gnu-bash.2382.n7.nabble.com/More-fun-with-IFS-td11388.html
The assignments are all consistent in 4.3.
https://gist.github.com/ormaaj/6381747
--
Dan Douglas