Automatically shrink longest column until row fits terminal width

[forthrin]

#!/usr/bin/env ruby

longest = -> { it.each_with_index.max_by { |str, _| str.length }.last }
dict = File.readlines('/usr/share/dict/words', chomp: true)
width = 80

loop do
  words = dict.sample(7)
  line = nil
  loop do
    line = words.join(' | ')
    break if line.length <= width

    w = longest.call(words)
    word = words[w].delete('…')
    mid = word.length / 2
    parts = [word[0, mid], word[mid..]]
    p = longest.call(parts)
    p.zero? ? parts[p].chop! : parts[p].slice!(0)
    words[w] = parts.join('…')
  end
  puts line
end