[whatwg] Preventing nested click() calls

[Geoffrey Garen]

> To me it just seems wrong to prevent this.  This is in theory no
> different than a recursive call and just like recursion it can end up
> in an infinite loop.

You're right, it is no different *in theory*. It is, however,  
different in practice. If we allow click() to re-enter itself, popular  
websites stop working.

>  Having a limit seems OK since most JavaScript
> engines already have a limit on the size of the call stack.

The concern here isn't implementation complexity -- it's web  
compatibility. A standard that breaks the web is no standard at all.

Geoff