Macroexpand shortcut in the REPL

.juliarc.jl

if VERSION > v"0.4.0-dev+4268"
	const marcoexpandkeys = Dict{Any,Any}("^I" => function (s,o...)
           if !isempty(s)
               
                   line = parse(Base.LineEdit.input_string(s))
                   s.kill_buffer=Base.LineEdit.input_string(s)
                   Base.LineEdit.edit_clear(s)
                   Base.LineEdit.edit_insert(s,string(macroexpand(line)))
               
           end
       end,
       "^O" => function(s,o...)
       		Base.LineEdit.edit_clear(s)
       		Base.LineEdit.edit_insert(Base.LineEdit.buffer(s),s.kill_buffer)
       		Base.LineEdit.refresh_line(s)
       	end)

	function customize_keys(repl)
  	repl.interface = Base.REPL.setup_interface(repl; extra_repl_keymap = marcoexpandkeys)
	end

	Base.LineEdit.atreplinit(customize_keys)
end