Yogthos 8bc5bd6f61 core: port when-let to the overlay — finishes the Phase 3 macro migration ... Last core macro still in Janet. Goes in 00-syntax (not 30-macros with its if-let/if-some/when-some siblings) because 20-coll's not-empty uses it and 20-coll loads before 30. Via `let` so the binding form may destructure, matching Clojure — the old Janet version used let* and wouldn't. Drops core-when-let + the sym* helper + the intern entry, and empties core-macro-names (no seed binding is a macro anymore).		2026-06-07 19:49:27 -04:00
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core	core: port when-let to the overlay — finishes the Phase 3 macro migration	2026-06-07 19:49:27 -04:00