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# 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