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//opt/alt/ruby21/lib64/ruby/2.1.0/io/console/size.rb
# fallback to console window size def IO.default_console_size [ ENV["LINES"].to_i.nonzero? || 25, ENV["COLUMNS"].to_i.nonzero? || 80, ] end begin require 'io/console' rescue LoadError class IO alias console_size default_console_size end else # returns console window size def IO.console_size console.winsize rescue NoMethodError default_console_size end end
