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Re: Why is this "quadrigraph" necessary?

From: Eric Blake
Subject: Re: Why is this "quadrigraph" necessary?
Date: Mon, 24 Nov 2014 13:21:35 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0

On 11/24/2014 07:56 AM, Bruce Korb wrote:

>> Because '$3' will be recognize by M4 as a parameter. It will be
>> replaced by the third argument to INVOKE_AG_MACROS_LAST. Thus it needs
>> quoting, be it by "@S|@" or "$[]3"
>> does not matter though.

Or even ${3} (the {} hides the 3 from m4).

Or, since it is awk, '$ 3', since awk (unlike shell or m4) ignores space
between $ and the number.

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library

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