Re: Check for cycles in context defs - any length

[Rune Zedeler]

Han-Wen Nienhuys skrev:

> I don't think that will work. We can change all these definitions on
> the fly using
>
>   \with {
>     \accepts ..
>
>   }
>
>
> Even if this might not be working right now, but it should be in the future.

That is true. It won't work then.
But otoh, afaics the whole path_to_acceptable_context needs to be 
rewritten in that case.

> I think that you it will be trivially easy to use a set<> iso. writing
> into the Context_def.

Definitely, but it will be a bit slow.
Well, but the function is not called /that/ often, so it is probably ok.

> Modifying read-only data is a no, because it
> will make our lives much more difficult if we ever want to share data
> between different executions (eg. threading.)

true.

-Rune