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core: start Phase 4 — move vary-meta and namespace-munge to the overlay

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First Phase 4 batch: the host-coupled fns whose logic is pure composition of
existing core primitives, so no new jolt.host surface is needed. vary-meta is
just (with-meta obj (apply f (meta obj) args)); namespace-munge is a char map
over str. Both land in the 20-coll tier; the Janet core-* defns and bindings
are gone. Added namespace-munge spec cases and a vary-meta extra-args case.

The heavily host-coupled fns (atom/var/transient internals, arrays, proxy,
futures) stay in Janet pending a thin host-primitive expansion.
This commit is contained in:
Yogthos 2026-06-07 20:00:19 -04:00
parent 8bc5bd6f61
commit e6ff4b8a77
4 changed files with 20 additions and 6 deletions
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5
test/spec/strings-spec.janet
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@ -48,3 +48,8 @@
["subs end past len" :throws "(subs \"abcde\" 1 6)"]
["subs nil start" :throws "(subs \"abcde\" nil 2)"]
["subs on nil" :throws "(subs nil 1 2)"])
(defspec "string / namespace-munge"
["hyphens to underscores" "\"a_b_c\"" "(namespace-munge \"a-b-c\")"]
["from a symbol" "\"foo_bar\"" "(namespace-munge (quote foo-bar))"]
["no hyphens unchanged" "\"ok\"" "(namespace-munge \"ok\")"])