a.b$macros=> (ns a.core$macros)
nil
a.core$macros=> (defmacro hell [x] `(+ x 2))
#'a.core$macros/hell
a.core$macros=> (macroexpand '(a.core/hell 1))
(a.core/hell 1)
a.core$macros=> (ns foo.core$macros)
nil
foo.core$macros=> (defmacro hell [x] `(+ x 2))
#'foo.core$macros/hell
foo.core$macros=> (macroexpand '(foo.core/hell 1))
(js* "(~{} + ~{})" foo.core/x 2)

a.core and foo.core are different? why?

@jiyinyiyong because the macro only gets compiled in $macro suffixed namespaces, http://blog.fikesfarm.com/posts/2015-09-07-messing-with-macros-at-the-repl.html

https://github.com/anmonteiro/lumo/issues/301

ah sorry, they are both $macros. I'm feverish today, didnt read well.

yeah, it's very strange to me...

you get the same result from Planck?

didn't install planck, so didn't try

Not reproducible in Planck https://github.com/anmonteiro/lumo/issues/301#issuecomment-339968902

Probably a simple compilation bug

Upstream in the compiler