RE: tail recursion?

> The question is whether XSLT procesors support tail 
> recursions under some circumstances and not under other. And 
> whether the circumstances are described.

For Saxon, tail recursion is used in some circumstances and not in
others, and the circumstances are not described anywhere (except the
source code, and to a degree in the change notices that accompany each
release). The answer certainly varies by release. At one stage, for
example, only self-recursion in call-template was optimized. In later
releases, this was extended to apply-templates and to non-self-recursive
tail calls.

Michael Kay


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