Ralf Hemmecke wrote:
> 
> It is sometimes useful to find the domain up in the hierarchy which
> actually implements a particular function.
> Can this be queried at runtime using some nasty Lisp or Boot tricks?
> 
> Say, I have a domain (or package) form like "(Fraction S)" and a
> signature "(SIGNATURE / (% % %))" and want to get back "(Localize S S)".
> Also "(Localize #1 #2)" or "(Localize M R)" would be OK. Any chance?


If you click on 'Implementations' 'operations' from submenu, then
HyperDoc will show you such info.  AFAICS this is done by
'dbGatherDataImplementation' from 'br-op1.boot'.  The first
3 lines of this function are specific to HyperDoc, the rest
should be reusable.

-- 
                              Waldek Hebisch
[email protected] 

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