*Reproduction*
{code:title=foo.clj|borderStyle=solid}
(ns foo
(:require [clojure.java.io :as io]))
(defn f [] ::io/key)
{code:title=repl|borderStyle=solid}
Clojure 1.10.0-alpha4
user=> (require 'foo)
nil
user=> (source foo/f)
RuntimeException Invalid token: ::io/key clojure.lang.Util.runtimeException (Util.java:221)
*Problem analysis*
{{source}} calls {{read}}, without any underlying binding or notion of {{Compiler.currentNS()}}, which causes aliased keywords to fail to resolve.
*Possible solution*
Bind \*reader-resolver\* to the following before reading:
(reify LispReader$Resolver
(currentNS [_] 'ignored)
(resolveClass [_ sym] 'ignored)
(resolveAlias [_ sym] 'ignored)
(resolveVar [_ sym] 'ignored))
Aside, the logic inside {{source-fn}} can be simplified with {{read+string}}, modulo CLJ-2358
