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sub c{($k,@_)=($#_)?@_:2..($n=@_[0]);@_=map{($_%$k)?$_:0}@_;push
@_,$k;$k<=sqrt($n)?c(grep{!/^0/}@_):@_}

[arguile@cobalt ~]$ wc -L sieve_golf
    104 sieve_golf

# display procedure blatantly stolen from Tye

...
100: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 
+89 97
169: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 
+89 97 101
103 107 109 113 127 131 137 139 149 151 157 163 167

# non-strict
sub c{$n=pop;@_=2..$n;for($k=2;$k<=sqrt($n);($k)=@_){@_=grep!/^0/,(map
+{($_%$k)?$_:0}@_),$k}@_}

# strict w/ less named vars
sub c{pop;@_=2..$_;for(my$k=2;$k<=sqrt;($k)=@_){@_=grep!/^0/,(map{$_%$
+k?$_:0}@_),$k}@_}

sub e{pop;@_=2..$_;for(my$k=2;$k<=sqrt;($k)=@_){@_=((grep$_%$k,@_),$k)
+;}@_}