The corpus certifier (test/conformance) flagged four cases where jolt's
hand-written :expected matched a real defect rather than Clojure. Fixed in the
jolt-core overlay, corrected the spec :expected, re-certified against JVM Clojure:
- ex-message: returns nil for a non-throwable (dropped the lenient string branch);
still returns the message for ex-info. (jolt-l8e8)
- munge: preserves the argument's type — a symbol munges to a symbol, not a string.
(jolt-hc35)
- print: (print nil) emits "nil", not "" (top-level nil guard; str yields "").
(jolt-pqio)
- bounded-count: uses the counted? fast path (full count), else counts up to n via
seq — was (min n (count coll)), wrong for counted colls. Added an uncounted-coll
spec case. (jolt-2507)
Removed the 4 :bug entries from known-divergences.edn (now certified), regenerated
corpus + profile, re-minted the Chez bootstrap seed (clojure.core changed). Gates:
Janet 155/0, JVM certify clean, both Chez corpus gates 2534 (floors raised),
bootstrap 6/6, fixpoint intact.
* Don't direct-link a var redefined earlier in the same unit (jolt-wf4)
defrecord/deftype expands to (do (def R (make-deftype-ctor ...)) (def ->R R) ...),
so the ->R alias references R within one compiled unit. Under direct-link a var
ref embeds the cell's root as a compile-time constant, but on a redefine R's old
root is still in place when that unit compiles — the (def R new) sibling hasn't
run yet — so ->R sealed to the stale pre-redef ctor. (defrecord R [x a])
(defrecord R [a x]) (:a (->R 10 20)) read the old [x a] layout and returned 20.
Track the vars a unit (re)defines and force their later in-unit references to the
live indirect deref. The cell is registered only after its own init is emitted,
so a recursive self-reference inside the init still direct-links (it runs after
the def completes); only sibling references after the def go indirect.
* Emit Janet's `in` as a value so a user local can't shadow it (jolt-fjb1)
The back end emits `in` to deref var cells ((in cell :root)) and index
shape-recs. It emitted the bare symbol, so a user local named `in` shadowed
Janet's builtin in the surrounding scope and the generated cell-deref called the
user's value as a function — "<table> called with 2 arguments, possibly expected
1". malli's explainer binds [value in acc], so m/explain hit this on every
schema (m/validate was unaffected — its path doesn't bind `in`).
Embed `in`'s function value at the emit sites (as jolt-call/core-get already
are); a value in head position can't be shadowed. Fixes m/explain on malli
(loaded with JOLT_FEATURES=clj so its .cljc reader-conditionals resolve).
---------
Co-authored-by: Yogthos <yogthos@gmail.com>
Fixed arities now throw Clojure's ArityException shape — 'Wrong number of
args (N) passed to: name' — on any count mismatch; variadic arities on fewer
than their fixed params. The compiled path already enforced fixed arities via
janet's native fn check and multi-arity dispatch; this adds the check to the
interpreter's single-arity closures (the oracle was silently dropping extra
args and giving a raw tuple-index error for missing ones) and guards the
compiled single-variadic wrapper's minimum. Messages carry the fn name when
there is one. 16 spec rows; the update.cljc suite row flipped green (4703 ->
4704).
Enforcement exposed that seq-to-map-for-destructuring had drifted: the spec
row called the 1-arity fn with two args, and the body silently dropped a
trailing unpaired element. Replaced with the canonical Clojure 1.11 version
(even pairs build the map, a single trailing element passes through — so
(f {:b 2}) kwargs calls work — and an unpaired key throws).
Also: transients RFC notes tuple support from the seed-shrink rounds.
yogthos/config now loads and runs end to end: config.edn/.lein-env
deep merge, env vars keywordized and type-converted, PushbackReader
over io/reader, reload-env via alter-var-root. New shims:
java.io.PushbackReader (read/unread), Long/parseLong, BigInteger.,
Boolean/parseBoolean, System/getProperties; clojure.edn/read now
drains an actual reader (it used to read one LINE from a raw janet
file handle, so multi-line config files and shim readers both broke).
Three real bugs shaken out, each with regression specs:
- An empty rest arg bound () instead of nil. ((fn [& r] (if r 1 2)))
returned 1; the truthy () sent config's (or (.exists f) required)
down the wrong branch. Fixed in the interpreter and the compiled-fn
emission. Internal apply boundaries (protocol dispatch, core-apply)
now accept a nil seq like Clojure's (apply f x nil).
- seq/map over a raw janet table (System/getenv, os/environ) yielded
nothing, so config's read-system-env came back empty. Raw host
tables now seq as kv entries like any map, in core-seq,
realize-for-iteration, and coll->cells. The old spec row hid this
behind a vacuous (every? pred empty) — replaced with one that
asserts non-emptiness.
- edn/read single-line limitation, as above.
test/integration/config-lib-test.janet runs the real library from
~/src/config (skips when absent).
(recur (inc acc) (rest xs)) re-entered the fn through its varargs collector,
so the rest seq came back wrapped in a fresh 1-element rest list — xs never
emptied and the interpreter hung (jolt-4df; the compile path was already
correct). recur now re-enters through a dedicated entry that binds the LAST
arg directly as the rest param (n-fixed + 1 args, Clojure's contract), in
both the single-arity and multi-arity fn* paths; the shared body runner keeps
the ns-swap/restore in one place, and fixed arities still re-dispatch through
the arity dispatcher exactly as before.
Six spec rows: the original repro, zero-fixed variadic, rest-empties-to-nil,
multi-arity variadic recur, nil rest, and a fixed-arity control.
sort-by, rand-int, shuffle, random-uuid, char-escape-string, and
char-name-string move to 20-coll over the two host seams that stay (rand and
sort — they ARE the randomness/ordering primitives). Canonical upgrades ride
along: sort-by defaults its comparator to compare, so nil sorts FIRST (the
kernel fn used host ordering and put nil last); rand-int truncates toward
zero via int (the kernel fn floored, wrong for negative n); shuffle is a
pure-functional Fisher-Yates over vector assoc and rejects non-collections
(a string is seqable but not shuffleable, as on the JVM — the honest gate
caught that one); random-uuid builds over rand-int and validates through
parse-uuid; the char tables are char-keyed Clojure maps (Clojure's shape —
the seed keeps its private code-keyed copies for pr-render).
22 new spec rows. Gate: jpm test exit 0 verified, suite 4698 >= 4660, bench
parity with main back-to-back (4733 vs 4817).
empty, assoc-in, and update-in move to 20-coll.clj as the canonical recursive
ports; interpose and take-nth move to the lazy tier WITH their canonical
transducer arities (volatile-based), so the seed's td-interpose/td-take-nth
helpers go too. (empty lazy-seq) is () now — the kernel fn returned a bare
host table for it.
keys/vals/empty? stay put for now: they're expander-coupled — 00-syntax's
when/and/or/cond/destructure expanders call them at expansion time, which
happens during the kernel-tier compile, before any later tier exists. They
move when early defns get the staged-recompile treatment macros already have.
26 new spec rows (incl. transducer arities through sequence/into and laziness
checks against (range)). Gate green: conformance 326x3, suite >= baseline,
full jpm test.
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.
