Expands all paths against the
root and return all unique values.
# File railties/lib/rails/paths.rb, line 174
def expanded
raise "You need to set a path root" unless @root.path
result = []
each do |p|
path = File.expand_path(p, @root.path)
if @glob
result.concat Dir[File.join(path, @glob)].sort
else
result << path
end
end
result.uniq!
result
end