There’s a lot of support for the syntax in vague concept, but every time a concrete proposal gains some momentum, all those very same people who are so eager for the feature end up killing it by each proposing their own pet variations. We tried at some point to add the relatively uncontroversial “argless lambda syntax” eg -> _[_] but that too was killed off by some people insisting that multiple instances of _ should all refer to the same argument rather than different ones for each occurrence. Never mind that this makes the construct far less useful and general, but this is the pattern: we start getting somewhere and then everyone and their uncle chimes in with different opinions about the details and that kills the momentum and we get nothing.
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