Module Generation from macros

General Usage
6

Does someone know why the first macro works and the second fails?

macro mymodule(name)
    modname = esc(name)
    return :(module $modname end)
end
@mymodule MyMod

Works. And the second, using a quote block does not throwing ERROR: syntax: "module" expression not at top level (see also https://github.com/JuliaLang/julia/issues/1200):

macro mymodule(name)
    modname = esc(name)
    return quote module $modname end end
end
@mymodule MyMod