Autocompletion on Dict{Symbol} keys causes kernel exception

[vargonis]

To reproduce: using IJulia on Atom via Hydrogen, evaluate d = Dict(:x=>1, :y=>2) and then type d[:. Autocompletion triggers and fails with the following error:

Dict{Symbol,Int64} with 2 entries:
  :y => 2
  :x => 1
KERNEL EXCEPTION
MethodError: no method matching complete_type(::QuoteNode)
Closest candidates are:
  complete_type(!Matched::Type{#s68} where #s68<:Function) at /home/vargonis/.julia/packages/IJulia/cwvsj/src/handlers.jl:54
  complete_type(!Matched::Type{#s68} where #s68<:Type) at /home/vargonis/.julia/packages/IJulia/cwvsj/src/handlers.jl:55
  complete_type(!Matched::Type{#s68} where #s68<:Tuple) at /home/vargonis/.julia/packages/IJulia/cwvsj/src/handlers.jl:56
  ...

Stacktrace:
 [1] complete_types(::Array{String,1}) at /home/vargonis/.julia/packages/IJulia/cwvsj/src/handlers.jl:100
 [2] complete_request(::ZMQ.Socket, ::IJulia.Msg) at /home/vargonis/.julia/packages/IJulia/cwvsj/src/handlers.jl:139
 [3] #invokelatest#1 at ./essentials.jl:742 [inlined]
 [4] invokelatest at ./essentials.jl:741 [inlined]
 [5] eventloop(::ZMQ.Socket) at /home/vargonis/.julia/packages/IJulia/cwvsj/src/eventloop.jl:8
 [6] (::getfield(IJulia, Symbol("##15#18")))() at ./task.jl:259

Output of versioninfo():

Julia Version 1.1.1
Commit 55e36cc308 (2019-05-16 04:10 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, skylake)

[nilshg]

This works on a standard current install, Atom has long since been killed off - this should be closed.

[vargonis]

Ok for me!