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#!/usr/bin/env ruby
STDOUT.set_encoding 'utf-8'
def usage
STDERR.write "merge_files [file]+\n"
exit 1
end
usage if ARGV.size==0
files = ARGV
dicts = []
files.each { |i|
dicts.push Hash.new
dicts.last.default = 0
File.open i, "r:UTF-8" do |f|
while line = f.gets
dicts.last[line.strip] += 1
end
end
}
dicts.each { |h|
h.each { |k,v|
counts = []
dicts.each { |j| counts.push j[k]; j.delete k }
counts.max.times { puts k }
}
}
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