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core: move doseq to the syntax tier

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Same shortcut as the prior Janet macro — realize a for comprehension with count
for side effects, return nil — so for keeps handling :when/:let/:while and multiple
bindings. Lives in 00-syntax because the analyzer uses doseq (analyze-try). Added
:when/:while/:let/returns-nil regression cases.

conformance 228x3, fixpoint, clojure-test-suite 3930, full suite green.
This commit is contained in:
Yogthos 2026-06-07 16:40:24 -04:00
parent 646744ca1d
commit 40b0f525f3
3 changed files with 12 additions and 10 deletions
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6
jolt-core/clojure/core/00-syntax.clj
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@ -95,3 +95,9 @@
(first cls)
`(if ~(mk-test (first cls)) ~(nth cls 1) ~(build (drop 2 cls))))))]
`(let* [~g ~expr] ~(build clauses))))
;; doseq runs body for side effects across the bindings, returning nil. Same
;; shortcut as the prior Janet macro: realize a `for` comprehension with count
;; (for handles :when/:let/:while and multiple bindings).
(defmacro doseq [bindings & body]
`(do (count (for ~bindings (do ~@body nil))) nil))