unlang idiom for removing superfluous attributes?

[Alan DeKok]

On Jan 20, 2023, at 9:22 PM, Brian Julin <BJulin at clarku.edu> wrote:
> 
> 
> I was pondering rewriting my rlm_attr_filter sets as unlang policy.
> 
> If there is an elegant way in unlang to remove all attributes from a list except the ones you want, I'm having trouble finding it.

  Not really, no.

> In unlang you seem to need to know the name of an attribute to do anything to it.

  Yes.

> If there was a temporary list, one could maybe (not sure if !* ANY works on lists):

  session-state?

  If it's not being used for EAP, then nothing else really uses it.

> Maybe this is just one of the cases where we still need rlm_attr_filter?

  Mostly, yes.

> Or maybe someone with more unlang-foo than me knows a magic incantation?

  We're looking into fixing this in v4.  But... that (as always) is a work in progress.

  Alan DeKok.