metadata-pull-hook: address L review
=+ !<(=hook-update:metadata vase)
?. ?=(%preview -.hook-update)
(on-poke:def mark vase)
- =. previews
+ =: pending (~(del in pending) group.hook-update)
+ previews
(~(put by previews) group.hook-update +.hook-update)
- =. pending
- (~(del in pending) group.hook-update)
+ ==
:_ this
=/ =path
preview+(en-path:resource group.hook-update)
