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 http://libvirt.org

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