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From: Bart Schaefer <schaefer@brasslantern.com>
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Date: Fri, 11 Feb 2005 18:51:25 +0000
In-Reply-To: <200502111445.j1BEj2Mp021524@news01.csr.com>
Comments: In reply to Peter Stephenson <pws@csr.com>
        "Exception handling" (Feb 11,  2:45pm)
References: <200502111445.j1BEj2Mp021524@news01.csr.com>
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Subject: Re: Exception handling
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On Feb 11,  2:45pm, Peter Stephenson wrote:
}
} I wrote the following test, with descriptions of what's going on.  If
} it's interesting I can add bits to the archive.

It's interesting ... just two comments:

}   # Raise an error, but don't show an error message.
}   # This is a bit of a hack.  (Surprised?)
}   { ${*ERROR*} } 2>/dev/null

How about something a little neater, like { ${:?THROW} } instead?  The
problem with relying on invalid syntax is that it might become valid
later.  (Like "{ foo } always { bar }" did, for example.)

} # grrr.... if this is rerun, catch mustn't be an alias when we define
} # it as a function...
} unalias catch 2>/dev/null

If you used "function catch { ... }" you wouldn't need the unalias, but
if you need unalias you probably need "builtin unalias".