🚀 go-pugleaf

In article <4819@goanna.cs.rmit.oz.au> ok@goanna.cs.rmit.oz.au (Richard A. O'Keefe) writes:

   Quintus has no debt to the public-domain library.

... and then explains that he and others now at Quintus wrote most of
it.

I do not believe there is any such thing as a debt (legal or moral) to
the public domain.  By putting a work into the public domain the
author grants complete freedom to use it without any legal constraint,
and usually with few moral constraints.

If you (that's you generally, not Richard, I know his opinion!) want a
*free* Prolog library, then write or commission one, and use the
copyright law to make sure it remains free.  You could even base it on
the DEC10 library souce (with appropriate credits, if _your_ morals
demand that).

I list below the library files that I have written to the Quintus
specification (without using the DEC10 library), and am working on
others in my spare time and as I need them.  Of course, this approach
means you risk losing the correctness and efficiency that you pay for
with Quintus and that you probably get from the PD libraries through
long use.

In case you didn't guess by the rhetoric above, these all have a GNU
style copyright and license agreement (`copyleft') on them.  If you
want them, I can email to you personally; unless there's an
overwhelming response (unlikely!), I'd prefer not to distribute
generally (yet).

(Some of these are not complete, and a few predate my decision to
follow the Quintus spec).

arg.pl
basics.pl
builtin.pl
change_arg.pl
curses.pl
freevars.pl
gensort.pl
listparts.pl
lists.pl
occurs.pl
ordsets.pl
same_functor.pl
sets.pl