Use reline

[deivid-rodriguez]

Closes #510.

Might close:

• Terminal echoing permanently turned off #59.
• Backspace fails when using Open3 #63.
• Byebug doesn't behave with multiple process server #487.
• I cant see the promt and what I Typing #488.

[MSP-Greg]

I used the following for test/support/reline.rb on MinGW master

# frozen_string_literal: true

require "reline"

unless STDOUT.tty? && STDIN.tty?
  Reline.send(:remove_const, 'IOGate') if Reline.const_defined?('IOGate')
  Reline.const_set('IOGate', Reline::GeneralIO)
  Reline.send(:core).config.instance_variable_set(:@test_mode, true)
  Reline.send(:core).config.reset
  Reline.input = $stdin
end

Tests passed except:

  1) Failure:
Byebug::FinishInsideAutoloadedFilesTest#test_finish_inside_autoloaded_files [C:/Greg/GitHub/gl/byebug/test/commands/finish_test.rb:173]:
Expected: 5

  Actual: 172

EDIT: code taken from:
https://github.com/ruby/ruby/blob/master/test/readline/helper.rb#L13-L20

[MSP-Greg]

EDIT: Ruby 2.5, 2.6, & master are passing. Had to throw a few windows related fixes at it, not sure if all are needed.

Maybe I'm missing something, but it seems that RubyGems can install io-console 0.5.3, but Bundler cannot.

Reline's ruby version spec starts with 2.5.

See:

https://github.com/MSP-Greg/byebug/runs/360346338

[deivid-rodriguez]

Can you open a new PR with whatever changes are needed to get things passing instead of working in your fork? That way we can benefit from your work.

Thank you 💜