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Re: FYI: 27-gary-builtin-argument-count-check-refactoring.patch

From: Gary V. Vaughan
Subject: Re: FYI: 27-gary-builtin-argument-count-check-refactoring.patch
Date: Sat, 13 Oct 2001 15:40:47 +0100
User-agent: Mutt/1.3.16i

On Sat, Oct 13, 2001 at 08:48:54AM +0200, address@hidden wrote:
> On Fri, Oct 12, 2001 at 09:05:27PM +0100, Gary V. Vaughan wrote:
> > Now we decalre builtins like this:
> > 
> >     /*      function        macros  blind argmin  argmax */
> >     BUILTIN(builtin,        FALSE,  TRUE,   2,      -1 )    \
> > 
> > Pretty cool huh?
> You beat me on this one :)  That's something I wanted, not only for
> factorization, but also because I think this is a service which define
> should provide, so that in macros we don't have to ifelse errprint etc.
> which would slow down things too much.

Yeah, I added a TODO entry.  The stumbling block is thinking of a clean
way to expose argument count limit setting to M4.  I am not sure how we
can tell the expansion engine what the limits are for user declared
macros... define_with_limits(foo, 1, 3, blah)?  yuck.  Open to

> I would also like to have the location site attached to the values too,
> and ultimately have m4 provide M4sugar's expansion_stack which allows
> to know the expansion track that was followed until some failure/warning
> message.

Sounds good.  Add a TODO item?

> Really, a gareat patch :)

Thanks.  I got home an hour early, and needed something to fill the void

  ())_. Gary V. Vaughan     gary@(oranda.demon.co.uk|gnu.org)
  ( '/  Research Scientist  http://www.oranda.demon.co.uk       ,_())____
  / )=  GNU Hacker          http://www.gnu.org/software/libtool  \'      `&
`(_~)_  Tech' Author        http://sources.redhat.com/autobook   =`---d__/

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