Why pry-remote dosen't work with rb-readline

[yui-knk]

This is related to #45.

In drb if proc is given, proc is wrapped with DRbObject. In this case defined? proc.call is not delegated to proc self. But proc.respond_to? :call is delegated to proc self.

in console A

$ irb -r drb/drb
irb(main):001:0> DRb.start_service
=> #<DRb::DRbServer:0x007fc4d9186758...>
irb(main):003:0> there = DRbObject.new_with_uri('druby://localhost:12345')
=> #<DRb::DRbObject:0x007fc4d914ac08 @uri="druby://localhost:12345", @ref=nil>
irb(main):004:0> there.class
=> DRb::DRbObject
irb(main):005:0> there[:proc] = proc{}
=> #<Proc:0x007fc4d99bb5e0@(irb):5>

and console B

$ irb -r drb/drb
irb(main):001:0> front = {}
=> {}
irb(main):003:0> DRb.start_service('druby://localhost:12345', front)
=> #<DRb::DRbServer:0x007faec318a0c8...>
irb(main):004:0> front
=> {:proc=>#<DRb::DRbObject:0x007faec317df08 @uri="druby://hoge.local:55573", @ref=70241720589040>}
irb(main):005:0> front[:proc]
=> #<DRb::DRbObject:0x007faec317df08 @uri="druby://hoge.local:55573", @ref=70241720589040>
irb(main):006:0> front[:proc].respond_to? :call
=> true
irb(main):007:0> front[:proc].call
=> nil
irb(main):008:0> defined? proc{}.call
=> "method"
irb(main):010:0> defined? front[:proc].call
=> nil
irb(main):011:0> prc =  front[:proc]
=> #<DRb::DRbObject:0x007faec317df08 @uri="druby://hoge.local:55573", @ref=70241720589040>
irb(main):012:0> defined? prc.call
=> nil
irb(main):013:0> prc.respond_to? :call
=> true

so, https://github.com/luislavena/rb-readline/blob/v0.5.1/lib/readline.rb#L92-L94 dose not work. I will send PR to rb-readline.