[julia-users] Weird Hygiene Issue

[Julia Tylors]

Hi fellows,


I was coding a macro, and I am having a prefix issue with functions.

basically the problem is: Every single one of  available functions 
(_ex_func) which i want to be globally accessible are prefixed with the 
name of the module(X)  in which the macro f is defined


Here is the code example:

julia> module X
        export @f
        macro f(x)
        st = string("_",x)
        sy = symbol(st)
        esc(quote
        function ($sy)()
        println("st")
        end

        function ($(symbol(string("_1",x))))()
        ($sy)()
        println("sty")
        end
        export $sy
        export $(symbol(string("_1",x)))
        end
        )
        end
        @eval @f ex_func
       end
X

julia> using X

julia> _

_1ex_func      __precompile__  _ex_func
julia> _1ex_func.env.defs.func.code
AST(:($(Expr(:lambda, Any[], Any[Any[],Any[],0,Any[]], :(begin  # none, 
line 12:
        *(X._ex_func)() # none, line 13: # i want this to be not prefixed 
by X*
        return (X.println)("sty")
    end)))))

julia> macroexpand(:(@f ex_func))
quote  # none, line 7:
    function _ex_func() # none, line 8:
        println("st")
    end # none, line 11:
    function _1ex_func() # none, line 12:
        *_ex_func() # none, line 13: # it seems OK, here!!!*
        println("sty")
    end # none, line 15:
    export _ex_func # none, line 16:
    export _1ex_func
end

as you may see , I may well define _ex_func in other modules and use it 
from the function X._1ex_func().
But this prevents me doing it.

How can i solve this problem?

Thanks