RE: Template recursion, StackOverflowError, saxon:while a nd variable assignability

Hi Michael, Andre

> I understand your issues but there are a few cases that 
> cannot be resolved without saxon:assign and just as much as 
> we try to avoid it with everything we can, sometimes there 
> are just no reasonable alternatives. ... 
... 
> In fact, there is still a very limited set of indispensable 
> saxon extensions that should be added to the standard and the 
> 2 main ones are eval/evaluate and assign/assignable.  

eval seems a very plausible addition to the lanaguage.

assign absolutely is not. Perhaps it's worth trying to classify
the problems that assign is solving so that a reasonable alternative
can be formulated.

The one problem I have been tempted to use assign for was to
cache a friendly unique identifier into a newly created node. This
could be resolved by introducing some form of constructor.

        Regards

                Ed Willink


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