Four runtime/reader gaps that blocked real libraries (hiccup, commonmark):
- reader: a type hint on a code form (^String (to-str x)) was lowered to a
runtime (with-meta (to-str x) {:tag String}), mis-applying the hint to the
call's RESULT and throwing when it's a string/number. A :tag hint on an
evaluated form is compile-time only in Clojure — attach it to the form
instead. Collection literals (^:foo [1 2 3]) still get runtime metadata.
- deftype: register the ctor globally by simple class name (like StringBuilder)
so (Name. ...) interop resolves ns-agnostically. host-new resolved the ctor
against the runtime current ns, which is the caller's, not the defining ns,
once a deftype is used across files.
- protocol dispatch: canonical-host-tag now strips the clojure.lang. prefix too
(clojure.lang.Keyword -> Keyword), and keywords/symbols carry the Named tag,
numbers a Ratio tag. An (extend-protocol P clojure.lang.Keyword ...) was
missing the dispatch, so e.g. hiccup rendered <:html> instead of <html>.
- regex: parse leading Java inline flags ((?s)/(?i)/(?m)) and pass the
equivalent irregex options (single-line/case-insensitive/multi-line); irregex
rejects the inline syntax. Adds a java.util.Iterator shim ((.iterator coll)/
.hasNext/.next) for the run!-style loop hiccup compiles.
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