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+#	$NetBSD: test.m4,v 1.4 1995/09/28 05:38:05 tls Exp $
+#
+# Copyright (c) 1989, 1993
+#	The Regents of the University of California.  All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Ozan Yigit.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#	This product includes software developed by the University of
+#	California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+#	@(#)test.m4	8.1 (Berkeley) 6/6/93
+#
+
+# test file for mp (not comprehensive)
+#
+# v7 m4 does not have `decr'.
+#
+define(DECR,`eval($1-1)')
+#
+# include string macros
+#
+include(string.m4)
+#
+# create some fortrash strings for an even uglier language
+#
+string(TEXT, "text")
+string(DATA, "data")
+string(BEGIN, "begin")
+string(END, "end")
+string(IF, "if")
+string(THEN, "then")
+string(ELSE, "else")
+string(CASE, "case")
+string(REPEAT, "repeat")
+string(WHILE, "while")
+string(DEFAULT, "default")
+string(UNTIL, "until")
+string(FUNCTION, "function")
+string(PROCEDURE, "procedure")
+string(EXTERNAL, "external")
+string(FORWARD, "forward")
+string(TYPE, "type")
+string(VAR, "var")
+string(CONST, "const")
+string(PROGRAM, "program")
+string(INPUT, "input")
+string(OUTPUT, "output")
+#
+divert(2)
+diversion #1
+divert(3)
+diversion #2
+divert(4)
+diversion #3
+divert(5)
+diversion #4
+divert(0)
+define(abc,xxx)
+ifdef(`abc',defined,undefined)
+#
+# v7 m4 does this wrong. The right output is 
+# 	this is A vEry lon sEntEnCE
+# see m4 documentation for translit.
+#
+translit(`this is a very long sentence', abcdefg, ABCDEF)
+#
+# include towers-of-hanoi
+#
+include(hanoi.m4)
+#
+# some reasonable set of disks
+#
+hanoi(6)
+#
+# include ackermann's function
+#
+include(ack.m4)
+#
+# something like (3,3) will blow away un*x m4.
+#
+ack(2,3)
+#
+# include a square_root function for fixed nums
+#
+include(sqroot.m4)
+#
+# some square roots.
+#
+square_root(15)
+square_root(100)
+square_root(-4)
+square_root(21372)
+#
+# some textual material for enjoyment.
+#
+[taken from the 'Clemson University Computer Newsletter',
+ September 1981, pp. 6-7]
+     
+I am a wizard in the magical Kingdom of Transformation and I
+slay dragons for a living.  Actually, I am a systems programmer.
+One of the problems with systems programming is explaining to
+non-computer enthusiasts what that is.  All of the terms I use to
+describe my job are totally meaningless to them.  Usually my response
+to questions about my work is to say as little as possible.  For
+instance, if someone asks what happened at work this week, I say
+"Nothing much" and then I change the subject.
+     
+With the assistance of my brother, a mechanical engineer, I have devised
+an analogy that everyone can understand.  The analogy describes the
+"Kingdom of Transformation" where travelers wander and are magically
+transformed.  This kingdom is the computer and the travelers are information.
+The purpose of the computer is to change information to a more meaningful
+forma.  The law of conservation applies here:  The computer never creates
+and never intentionally destroys data.  With no further ado, let us travel
+to the Kingdom of Transformation:
+     
+In a land far, far away, there is a magical kingdom called the Kingdom of
+Transformation.  A king rules over this land and employs a Council of
+Wizardry.  The main purpose of this kingdom is to provide a way for
+neighboring kingdoms to transform citizens into more useful citizens.  This
+is done by allowing the citizens to enter the kingdom at one of its ports
+and to travel any of the many routes in the kingdom.  They are magically
+transformed along the way.  The income of the Kingdom of Transformation
+comes from the many toll roads within its boundaries.
+     
+The Kingdom of Transformation was created when several kingdoms got
+together and discovered a mutual need for new talents and abilities for
+citizens.  They employed CTK, Inc. (Creators of Transformation, Inc.) to
+create this kingdom.  CTK designed the country, its transportation routes,
+and its laws of transformation, and created the major highway system.
+     
+Hazards
+=======
+     
+Because magic is not truly controllable, CTK invariably, but unknowingly,
+creates dragons.  Dragons are huge fire-breathing beasts which sometimes
+injure or kill travelers.  Fortunately, they do not travel, but always
+remain near their den.
+     
+Other hazards also exist which are potentially harmful.  As the roads
+become older and more weatherbeaten, pot-holes will develop, trees will
+fall on travelers, etc.  CTK maintenance men are called to fix these
+problems.
+     
+Wizards
+=======
+     
+The wizards play a major role in creating and maintaining the kingdom but
+get little credit for their work because it is performed secretly.  The
+wizards do not wan the workers or travelers to learn their incantations
+because many laws would be broken and chaos would result.
+     
+CTK's grand design is always general enough to be applicable in many
+different situations.  As a result, it is often difficult to use.  The
+first duty of the wizards is to tailor the transformation laws so as to be
+more beneficial and easier to use in their particular environment.
+     
+After creation of the kingdom, a major duty of the wizards is to search for
+and kill dragons.  If travelers do not return on time or if they return
+injured, the ruler of the country contacts the wizards.  If the wizards
+determine that the injury or death occurred due to the traveler's
+negligence, they provide the traveler's country with additional warnings.
+If not, they must determine if the cause was a road hazard or a dragon.  If
+the suspect a road hazard, they call in a CTK maintenance man to locate the
+hazard and to eliminate it, as in repairing the pothole in the road.  If
+they think that cause was a dragon, then they must find and slay it.
+     
+The most difficult part of eliminating a dragon is finding it.  Sometimes
+the wizard magically knows where the dragon's lair it, but often the wizard
+must send another traveler along the same route and watch to see where he
+disappears.  This sounds like a failsafe method for finding dragons (and a
+suicide mission for thr traveler) but the second traveler does not always
+disappear.  Some dragons eat any traveler who comes too close; others are
+very picky.
+     
+The wizards may call in CTK who designed the highway system and
+transformation laws to help devise a way to locate the dragon.  CTK also
+helps provide the right spell or incantation to slay the dragon. (There is
+no general spell to slay dragons; each dragon must be eliminated with a
+different spell.)
+     
+Because neither CTK nor wizards are perfect, spells to not always work
+correctly.  At best, nothing happens when the wrong spell is uttered.  At
+worst, the dragon becomes a much larger dragon or multiplies into several
+smaller ones.  In either case, new spells must be found.
+     
+If all existing dragons are quiet (i.e. have eaten sufficiently), wizards
+have time to do other things.  They hide in castles and practice spells and
+incatations.  They also devise shortcuts for travelers and new laws of
+transformation.
+     
+Changes in the Kingdom
+======================
+     
+As new transformation kingdoms are created and old ones are maintained,
+CTK, Inc. is constantly learning new things.  It learns ways to avoid
+creating some of the dragons that they have previously created.  It also
+discovers new and better laws of transformation.  As a result, CTK will
+periodically create a new grand design which is far better than the old.
+The wizards determine when is a good time to implement this new design.
+This is when the tourist season is slow or when no important travelers
+(VIPs) are to arrive.  The kingdom must be closed for the actual
+implementation and is leter reopened as a new and better place to go.
+     
+A final question you might ask is what happens when the number of tourists
+becomes too great for the kingdom to handle in a reasonable period of time
+(i.e., the tourist lines at the ports are too long).  The Kingdom of
+Transformation has three options: (1) shorten the paths that a tourist must
+travel, or (2) convince CTK to develop a faster breed of horses so that the
+travelers can finish sooner, or (3) annex more territories so that the
+kingdom can handle more travelers.
+     
+Thus ends the story of the Kingdom of Transformation.  I hope this has
+explained my job to you:  I slay dragons for a living.
+
+#
+#should do an automatic undivert..
+#