a prime bug

[ownlifeful]

chomp and print join ',',  grep $_, (map length, split /[a,]/), "\n"
 while <DATA>;
__END__
a bug trapped inside
a paper lantern, arid 
aflutter, ablaze

[shmem]

Nice. But __END__ should be __DATA__ and __END__ be -- well, at the end.

[ownlifeful]

I suppose, if you want to be formal about it.
iirc, __END__ and __DATA__ are equivalent, and that's why the script runs. Please correct me if you know otherwise.

[shmem]

Running a script - perl script.pl - the tokens make no difference. But if you invoke perl on the command line to read STDIN and paste the script, __END__ makes DATA into STDIN, and you have to type Ctrl-d to close STDIN/DATA. Not a big deal, but that's the difference ;-)

[Jambo Hamon]

All comments so far are awesome. I felt like the bug when i read it ... ;]