Interaction b/w Vararg and keyword arguments

[davidagold]

On Julia Version 0.5.0-dev+4810, the following works:

julia> f(x::Int...; kwarg=false) = kwarg
f (generic function with 1 method)

julia> f(1, 2, 3; kwarg=true)
true

However, defining a function with both a Vararg argument and a keyword argument seems to generate a method that is missed(?) by dispatch:

julia> g{nargs}(x::Vararg{Int, nargs}; kwarg=false) = kwarg
g (generic function with 1 method)

julia> g(1, 2, 3; kwarg=true)
ERROR: MethodError: no method matching #g#2(::Bool, ::#g, ::Tuple{Int64,Int64,Int64})
Closest candidates are:
  #g#2{nargs}(::Any, ::Any, ::Int64...)
 in (::#kw##g)(::Array{Any,1}, ::#g, ::Int64, ::Int64, ::Int64) at ./null:0
 in eval(::Module, ::Any) at ./boot.jl:231
 in macro expansion at ./REPL.jl:92 [inlined]
 in (::Base.REPL.##1#2{Base.REPL.REPLBackend})() at ./event.jl:46

julia> @code_typed g(1, 2, 3; kwarg=true)
1-element Array{Any,1}:
 LambdaInfo for g
:(begin  # REPL[28], line 1:
        return (Main.#g#2)(false,#self#,x)
    end)

[dhoegh]

This is a dup of #13919.

[JeffBezanson]

Closing as dup.