key/val/select-keys/zipmap/merge/merge-with/get-in/memoize/partial/
trampoline/some?/true?/false?/max/min/reverse move to 20-coll.clj as the
canonical Clojure definitions, plus find — which was previously missing from
jolt entirely (select-keys/merge-with/memoize build on it). Two behavior
fixes ride along: memoize now caches nil results (the kernel fn re-computed
them — canonical find-based impl), and conj of nil onto a map is a no-op as
in Clojure (it errored; the canonical merge relies on it). max/min keep the
JVM NaN behavior by construction (pairwise >/<). not= stays: the kernel tier
(subvec) uses it.
One new tier-ordering rule, learned the hard way: a tier may only use macros
from tiers that load BEFORE it — memoize's if-let (30-macros) broke compiled
init while interpret mode passed, because compile expands macros at tier
load and the interpreter expands lazily. Now documented in the migration
workflow note.
MIGRATION.md is gone — task tracking lives in beads (jolt-ded; the per-batch
workflow, tier-order rules, perf wall, and remaining candidates are in bd
memory core-migration-workflow). The doc's candidate lists had gone stale
against the actual seed anyway.
43 new spec rows. Gate green: conformance 326x3, suite >= baseline, full
jpm test, bench at parity with main back-to-back (4851 vs 4831 TOTAL).
Nine more seed leaves move to 20-coll.clj (verified leaf-by-leaf: defn +
core-bindings entry only, no internal callers). fnil is upgraded to Clojure's
canonical 2/3/4-arity — it patches only the first 1-3 arguments; the old
kernel fn patched every position it had a default for, which Clojure does
not. The rest carry their kernel semantics over unchanged (bigdec is a
double, numerator/denominator throw, supers is #{}, munge rewrites dashes).
16 new spec rows incl. the fnil arity-contract cases. Gate green:
conformance 326x3, suite 4577, full jpm test (2:18 — first full run with the
ctx image cache on main).
Add spec suites for conditionals/logic/let/loop/iteration/threading, functions
(definition, application, combinators), and destructuring across let/fn/loop/
doseq/for. Bug caught and fixed: loop* assumed simple-symbol bindings, so
(loop [[a b] [1 2]] ...) errored; it now destructures each binding via
destructure-bind, supporting patterns in loop bindings (and recur). jpm test green.
