in reply to Reading a pattern and a number of lines after it
($r,$i,$l,@ARGV)=@ARGV[1,2,2,0];(/$r/and$i='.'or++$i<=$l)&&print while +<> [download]
2;0 juerd@ouranos:~$ perl -e'undef christmas' Segmentation fault 2;139 juerd@ouranos:~$ [download]