Common Prolog provides a translator from Edinburgh syntax to allow users to port pre-existing code.
The
consult
predicate operates only on
.pl
files:
consult('xxx.pl')
means consult file
xxx.pl
.
consult('xxx')
. means find a file named
xxx.pl
and consult it.
The
reconsult
predicate can operate on a Lisp source file, since
compile_and_reconsult('xxx.pl')
produces a Lisp binary file
xxx.?fasl
. That is,
reconsult
will load fasl and lisp files as well as
.pl
files:
reconsult('xxx.pl')
means reconsult file
xxx.pl
.
reconsult('xxx')
means look for a file named
xxx.?fasl
and load it, or if none found, look for
xxx.pl
and reconsult it, or if none found look for
xxx.lisp
and load it, or load
xxx
.
Loading a compiled file is equivalent to
reconsult
.
compile_and_reconsult
compiles a file and reconsults the result.
Edinburgh syntax may also be used to interact with Common Prolog through the use of a different read-query-print loop. To use Edinburgh syntax, use
(erqp)
instead of
(rqp)
to start your command loop.