(In fact, me'd even argue that UNIX could use a "lessons-learned"You've read 'the cathedral and the bazaar' of course. If I were a gazilionaire I'd pay some hotshots to rewrite the whole thing from the bedrock up -- build a cathedral. Same with zsh -- pay the devs to really get things right. Think Haussmann redoing Paris.rewrite altogether. But that's once again beyond our purview.) --zeurkous.