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Re: Declaring a local variable circumvents "-e"
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From: |
Bob Proulx |
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Subject: |
Re: Declaring a local variable circumvents "-e" |
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Date: |
Wed, 24 Sep 2008 22:13:32 -0600 |
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User-agent: |
Mutt/1.5.13 (2006-08-11) |
Chet Ramey wrote:
> Björn Augustsson wrote:
> > fun_bad() { local bah=$( false ); }
> > fun_good() { local bah ; bah=$( false ); }
>
> The `local' command returns success if the variable assignment succeeds,
> which it does. The command substitution doesn't affect its exit status.
> This is how all builtins that affect variable attributes (declare/typeset,
> export, readonly) should behave.
Note that this is also the way "export" works too.
Bob