Ruby【全角空白も除去】できるstrip!()ありますか？

# -*- coding: euc-jp -*-
class String
  def strip_with_full_size_space!
    s = "　\s\v"
    sub!(/^[#{s}]*([^#{s}]+)[#{s}]*$/o, '\1')
  end
  def strip_with_full_size_space
    clone.strip_with_full_size_space!
  end
end

"　 　全半混在 　 ".strip_with_full_size_space  # => "全半混在"
"　全半混在 ".strip_with_full_size_space        # => "全半混在"
"　全半混在".strip_with_full_size_space         # => "全半混在"
"全半混在 ".strip_with_full_size_space          # => "全半混在"
"全半混在".strip_with_full_size_space           # => "全半混在"

s = "　全角空白を除去したい　"
s.strip_with_full_size_space!
s                                               # => "全角空白を除去したい"