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Re: test: -a and -o not portable? Since when?

From: Paul Eggert
Subject: Re: test: -a and -o not portable? Since when?
Date: Sun, 13 Mar 2011 08:22:41 -0700
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20110223 Thunderbird/3.1.8

On 03/13/2011 07:30 AM, Reuben Thomas wrote:
> They're specified in POSIX

They're marked as an obsolescent XSI extension in POSIX.1-2008.
That is, they're not required by POSIX, and even as an
optional extension they may go away in future versions.

The rationale explains why -a and -o are deprecated.
One thing that the rationale doesn't fully go into, though,
is that -a and -o are syntactically ambiguous in some

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