Re: IF / ELSE / ENDIF macros for M4

[Mr. Clif]

You're welcome Eric,

Feel free to change the style or rewrite them from scratch to better 
match the other examples in the manual if needed, I'm not attached. :-) 
I would just like to see this tool available when others go looking for it.

I'm happy to add whichever copyright you'd like to it, just let me know.

    Thanks for considering it,
    Clif

On 5/26/21 7:56 AM, Eric Blake wrote:
> On Wed, Apr 07, 2021 at 09:58:08AM -0700, Mr. Clif wrote:
> > So not finding anything like this, I wrote some that seem to work pretty
> > well. Here they are:
> >
> > http://www.eugeneweb.com/wiki/Sites/M4Macros
> Thanks for the link.
>
> > I defined the names without the #'s eg. IF, ELSE, ENDIF, etc... Also M4
> > requires parentheses to hold the arguments where CPP does not (at least for
> > most of these). I also added a selective invoke, to protect macros with side
> > effects from invocation in an unselected block.
> >
> > I was wondering if they pass muster, if the devs might consider including
> > them or something similar in M4's list of examples.
> Right now, the code in m4/examples is limited to things mentioned in
> the manual; it may be worth considering additional examples, but
> distributing them as part of the m4 tarball would require proper FSF
> copyright assignment.  Certainly not something that will happen in
> time for the pending 1.4.19 release, but if there is didactic value in
> your macros that is not already covered in the manual, it may be worth
> future consideration.