from the at-least-they're-consistent dept.
karios writes "Today I received a takedown letter from a law firm representing the Tetris Company for copyright violations involving my game Tetrada, which I published on the Windows Phone 7 marketplace. The witch hunt, after hitting Android, iOS and other platforms, continues on Windows Phone 7. It's a pity, since some of the tetromino games in the Marketplace were pretty decent."
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals