arphaman added a comment.

In https://reviews.llvm.org/D39836#920587, @sammccall wrote:

> So I probably should have started from the other end, here :-)
>
> I'd really like to make the completion retrieval and ranking more flexible. 
> In particular
>
> - incorporating results from other sources (indexes: both in-memory and 
> external services).
> - combining more quality signals like usage count and fuzzy-match-strength in 
> a non-lexicographic-sort way The biggest difficulty in *supporting* unusable 
> functions is maintaining the invariant that all unusable functions are ranked 
> lower than usable ones - all code that deals with ranking has to deal with 
> this special case, e.g. by making score a tuple instead of a single number.


That sounds good to me. Please keep in mind that not all clients might want to 
take advantage of these things as they might have their own fuzz-match logic 
and external result injection.

> If the current approach of "give them a penalty" is enough, knowing that in 
> the future it may lead to e.g. a very widely used but inaccessible protected 
> function being ranked highly, then that seems fine to me too. A wider 
> configuration space means testing is more work, but happy to live with it. 
> What do you think?
> 
> (With my user-hat on, configurable is fine, though I do strongly feel they 
> should be off by default, and it seems unlikely many users will change the 
> defaults.)

I'd be ok with off by default, as long as it's possible to turn it on :)


https://reviews.llvm.org/D39836



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