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Re: safe define

From: Werner LEMBERG
Subject: Re: safe define
Date: Mon, 11 May 2015 20:44:52 +0200 (CEST)

>> has someone ever written a `safe define' macro that makes the
>> defined macro expands to itself if called without any argument?
> Yes, the manual even has a section on how to do it:
> https://www.gnu.org/software/m4/manual/m4.html#Composition

Doh.  I've read basically the whole m4 manual, but this section
somehow escaped my attention.  Thanks a lot!


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