importall A; @reexport using A causes warning

[lendle]

module A end

module B
    using Reexport
    importall A
    @reexport using A
end

julia> using B
Warning: using B.A in module Main conflicts with an existing identifier.

The only reason I'm using using A is to also @reexport everything. I tried changing the macro to allow for importall so I could just do @reexport importall A once, but the warning still showed up.

[simonster]

It looks like the problem is that importall A and import A actually create a new binding for A in the local scope, whereas using doesn't. You don't need Reexport.jl to see this:

module A end
module B
    importall A
    export A
end
using B

B.A === A, but these are separate bindings. I'm not sure if there is a good reason for this behavior, but we could avoid the warning if we don't export the module itself.