Those would work.
Don’t beat yourself up too much looking for a solution. This is a very specific problem to me, and it cost me my morning. I don’t think there is a nice solution like I’m looking for.
I am happy to find a nice solution, if one is available. I just need to have the question right.
[fields:exclude[created text tags title modified]]
:map:flat[all[tiddlers]get{!!title}]
:map:flat[all[tiddlers]subfilter{!!title}]
Gives this:
If you know in advance the fields then you can do this:
[get[fieldA]][get[fieldB]]:map:flat[all[tiddlers]subfilter{!!title}]
I forgot to include in my demo piece that the fields need to be manipulated individually. fieldA fields need “A-” prepended to them. fieldB fields need “B-” prepended to them. If not for that, your solution would work.
I’ve found a workaround for my project that doesn’t involve running filters. It’s not great, but it will work, since I don’t think a better solution exists.
But this whole thing did give me the greatest idea for Tiddlywiki feature-bloat.
The [xargs[]] operator!
[all[]get[fieldA]xargs[subfilter]] [all[]get[fieldB]xargs[subfilter]]
A perfect solution 1% of the time.
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To paraphrase Brian Fantana:
One percent of the time, it works perfectly every time.
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