Turtle Race implemented in Sendmail

Well, what can I say? Turtle Race was an introductory programming exercise at LTH, and Sendmail is such a bloated mail transport agent that it is possible to write small programs using its dreaded configuration file syntax.

# TURTLE RACE implemented in sendmail, by Linus Akesson, lft@df.lth.se
# If the name of this file is "turtle", type:
# echo "0 0" | /usr/lib/sendmail -bt -Cturtle

DE"___*___"
DF"o/~~~\\o"
DG"o\\___/o"
DH"___O___"
DI"_______"
DJ"******* FINISH ****"
DK"**** START ****"

S0
R0		$>2 f d $K
Rg		$:$>2 b f $K
Rg		$:$>2 f f $K

S1
R$+$G$-		$1 $H $2
R$+$G		$1 $H
R$-$-$*		$:$2 $1 $3
Rb$*		a $1
Rc$*		b $1
Rd$*		c $1
Re$*		d $1
Rf$*		e $1

S2
R$+$K		$>3$1 $E $E
R$-$+		$>3$1 $2

S3
R$*		$:$>1$1 
Ra$-$E$-	$>4 a $1 $F $2
Ra$-$G$-	$>4 a $1 $H $2
R$J		$@g
R$*		$:$>1 $1
Ra$-$-$E	$>4 a $1 $2 $F
Ra$-$-$G	$>4 a $1 $2 $H
R$J		g

S4
Ra$-$F$-	a$1 $G $2
Ra$-$H$-	a$1 $I $2
Ra$+$F		a$1 $G
Ra$+$H		a$1 $I
Ra a $I $I	$J

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Turtle Race implemented in Sendmail

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