Cannot define isempty in Main

[bicycle1885]

I found a confusing behavior when I tried to define a function named isempty in the Main module:

julia> isempty(x) = true
ERROR: error in method definition: function Base.isempty must be explicitly imported to be extended
Stacktrace:
 [1] top-level scope
   @ none:0
 [2] top-level scope
   @ REPL[1]:1

[KristofferC]

Probably from

julia/contrib/generate_precompile.jl

Line 3 in d26dc9e

if isempty(Base.ARGS) || Base.ARGS[1] !== "0"

enough to change to Base.isempty?

[StefanKarpinski]

Would it make sense to wrap that whole logic in an anonymous module instead? Prefixing everything with base seems annoying.

[KristofferC]

Most of it is already in an anonymous function so

julia/contrib/generate_precompile.jl

Line 6 in d26dc9e

@eval Module() begin

could probably just be moved up a few lines as well.