I can confirm this behavior. It's not the fault of the `ns`
macro, however. This works just fine:

    user=> (ns ^{:doc "This is foo"} foo)
    nil
    foo=> (in-ns 'user)
    #<Namespace user>
    user=> (meta (the-ns 'foo))
    {:doc "This is foo"}

AOT-compilation appears to be the culprit (as usual). This
has been known for a long time, see CLJ-130, which I just
updated.

[CLJ-130]: http://dev.clojure.org/jira/browse/CLJ-130

-S




On Saturday, July 20, 2013 8:50:18 AM UTC-4, Alexander Yakushev wrote:
>
> Example:
>
> user=> (meta (find-ns 'clojure.set))
> nil
> user=> (meta (find-ns 'clojure.string))
> nil
> user=> (meta (find-ns 'clojure.core))
> {:doc "Fundamental library of the Clojure language"}
>
> clojure.core is the only namespace that has metadata. Apparently because 
> it has metadata set differently 
> https://github.com/clojure/clojure/blob/master/src/clj/clojure/core.clj#L6158,
>  
> so I blame *ns *macro.
>
> I tested this with clojure 1.2-1.5, so it is not a regression, and unless 
> I'm doing something wrong, this was broken from the beginning.
>

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