[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
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 http://libvirt.org
signature.asc
Description: OpenPGP digital signature