Re: An autoconf tutorial.

[Ralf Wildenhues]

Hi Ed,

Please keep the mailing list copied, this is interesting for others as
well.  Thank you.

* E. Rosten wrote on Wed, May 25, 2005 at 10:53:13AM CEST:
> On Wed, 25 May 2005, Ralf Wildenhues wrote:
> >* E. Rosten wrote on Mon, May 23, 2005 at 06:59:05PM CEST:
> >
> >| M4 arguments are quoted with [ and ]. There is NO WAY to escape these,
> >| however, you can change the quoting using:
> >|
> >|                          changequote(<<,>>)
*snip*
> >Please don't encourage use of changequote.
> 
> How come?

Documented in
  info Autoconf 'Changequote is Evil'

> >Rather quadrigraphs.
> 
> What are they (I haven't encountered them)? Is it a way of entering [ and 
> ] without [ and ] actually appearing?

Documented in
  info Autoconf Quadrigraphs

The whole section around m4 Quotation is interesting for this topic.

Does this short answer help?  Note you may need a recent Autoconf
version for these sections, I don't actually know how old they are.

Regards,
Ralf