Are any JavaScript engines tail call (TCO) optimized?

Question

I have a tail recursive pathfinding algorithm that I\'ve implemented in JavaScript and would like to know if any (all?) browsers would possibly get stack overflow exceptions

Answer 1

No joy for the moment, but thankfully proper tail calls are slated for Harmony (ECMAScript version 6) http://wiki.ecmascript.org/doku.php?id=harmony:proper_tail_calls