reline_noise_rerender_visualizer.rb

class << ($colored_stdout = STDOUT.dup)
  # Flip this if you are using bright theme
  BACKGROUND = [0, 0, 0]
  FOREGROUND = [255, 255, 255]

  RANDOMIZE_RANGE = -32..32

  def rand_color(rgb, bg: false)
    "#{bg ? 48 : 38};2;#{rgb.map { (_1 + rand(RANDOMIZE_RANGE)).clamp(0, 0xff) }.join(';')}"
  end

  def randomize_color(numbers)
    case numbers
    in []
      []
    in [0, *rest]
      [0, rand_color(BACKGROUND, bg: true), rand_color(FOREGROUND), *randomize_color(rest)]
    in [38 | 48 => type, 5, col, *rest]
      rgb = [col/36, col/6%6, col%6].map { [0, 95, 135, 175, 215, 255][_1] }
      [rand_color(rgb,  bg: type == 48), *randomize_color(rest)]
    in [38 | 48 => type, 2, r, g, b, *rest]
      [rand_color([r, g, b], bg: type == 48), *randomize_color(rest)]
    in [30..37 | 40..47 => col, *rest]
      rgb = 3.times.map { (col % 10 >>_1) % 2 * 255 }
      [rand_color(rgb, bg: col >= 40), *randomize_color(rest)]
    in [num, *rest]
      [num, *randomize_color(rest)]
    end
  end

  def write(s)
    super "\e[#{randomize_color([0]).join(';')}m" + s.gsub(/\e\[[\d;]*m/){|a|
      numbers = a.scan(/\d+/).map(&:to_i)
      numbers << 0 if numbers.empty?
      "\e[#{randomize_color(numbers).join(';')}m"
    }+"\e[0m"
  end
end

def (Reline.core).output() = $colored_stdout

reline_pre_flash_rerender_visualizer.rb

class << ($colored_stdout = STDOUT.dup)
  def write(s)
    if $flash_output
      s = "\e[0;1;7m#{s.gsub(/\e\[[\d;]*m/, '')}\e[m"
      $flash_rendered = true
    end
    super s
  end
end

def (Reline.core).output() = $colored_stdout
class Reline::LineEditor
  def render_everything_without_flash(force: false)
    return unless $flash_rendered
    $flash_rendered = false
    $flash_output = false
    cache = @rendered_screen_cache
    @rendered_screen_cache = cache&.map{[[0,100,'a'*100]]}
    render_differential_orig
    @rendered_screen_cache = cache
  end
  def render_differential_with_flash
    render_everything_without_flash # to clear previous flash
    time = Time.now
    $tick = ->{
      if Time.now-time > 0.2
        $tick = nil
        render_everything_without_flash
      end
    }
    $flash_output = true
    render_differential_orig
  end
  alias_method :render_differential_orig, :render_differential
  alias_method :render_differential, :render_differential_with_flash
  prepend Module.new{
    def resize;super;$tick&.call;end
    def handle_signal;super;$tick&.call;end
  }
end