Support for the Ruby 2.4 series has ended. See here for reference.
A progress reporter that prints out messages about the current progress.
Creates a new progress reporter that will write to out_stream for size items. Shows the given initial_message when progress starts and the terminal_message when it is complete.
# File rubygems/user_interaction.rb, line 508
def initialize(out_stream, size, initial_message,
terminal_message = 'complete')
@out = out_stream
@total = size
@count = 0
@terminal_message = terminal_message
@out.puts initial_message
end