Todd Vierling writes:
> On 30 Aug 1998, Perry E. Metzger wrote:
> 
> : Some of our packages require gnu m4, it seems.
> : 
> : What is it that our m4 can't do?
> 
> gm4 -P
> 
> Proper handling of defn() - this breaks in some cases on our m4
> 
> A few GNU extension macros

How hard would it be to extend our m4 so that we no longer need to
have any dependence on gnu m4?

.pm