Try
[id<id>then[yes]else[no]compare:string:eq[no]]
On Sunday, February 21, 2021 at 1:47:35 AM UTC-8 Mat wrote:
> Need some filter help. Pseudocode:
>
> <$vars value={{foo!!value}}>
> filter=Among all tiddlers with an id field, if there is no tiddler with
> id:<value> then do X but if there is a tiddler with id:<value> then do
> nothing
> </$vars>
>
> I assume it is some kind of then ... else construct but I can't quite
> materialize it and I'm getting confused by how I loose the tiddler titles
> if I look at their field values. Maybe I need something with the subfilter
> operator but I'm not sure how... ?
>
> Thank you.
>
> <:-)
>
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