= prolog-shell

== NAME
prolog-shell - Simple interactive Prolog interpreter

== SYNOPSIS
[verse]
--
_java_ -jar gerrit.war _prolog-shell_
  [-s FILE.pl ...]
--

== DESCRIPTION
Provides a simple interactive Prolog interpreter for development
and testing.

== OPTIONS
-s::
	Dynamically load the Prolog source code at startup,
	as though the user had entered `['FILE.pl'].` into
	the interpreter once it was running. This option may
	be supplied more than once to load multiple files.

== EXAMPLES
Define a simple predicate and test it:

----
	$ cat >simple.pl
	food(apple).
	food(orange).
	^D

	$ java -jar gerrit.war prolog-shell -s simple.pl
	Gerrit Code Review 2.2.1-84-ge9c3992 - Interactive Prolog Shell
	based on Prolog Cafe 1.2.5 (mantis)
	         Copyright(C) 1997-2009 M.Banbara and N.Tamura
	(type Ctrl-D or "halt." to exit, "['path/to/file.pl']." to load a file)

	{consulting /usr/local/google/users/sop/gerrit/gerrit/simple.pl ...}
	{/usr/local/google/users/sop/gerrit/gerrit/simple.pl consulted 99 msec}

	| ?- food(Type).

	Type = apple ? ;

	Type = orange ? ;

	no
	| ?-
----

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