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require 'formula'
module Homebrew extend self
def deps
if ARGV.include? '--all'
Formula.each do |f|
puts "#{f.name}: #{f.deps*' '}"
end
else
all_deps = ARGV.formulae.map{ |f| ARGV.one? ? f.deps : f.recursive_deps }.intersection
all_deps.sort! unless ARGV.include? "-n"
puts all_deps
end
end
end
class Array
def intersection
a = []
each{ |b| a |= b }
each{ |c| a &= c }
a
end
end
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