# ri > ActiveSupport::Multibyte::Unicode

## [ActiveSupport::Multibyte::Unicode](https://www.chedong.com/phpMan.php/perldoc/ActiveSupport%3A%3AMultibyte%3A%3AUnicode/markdown)

(from /home/chedong/.local/share/rdoc)
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## Constants:

UNICODE_VERSION:
  The Unicode version that is supported by the implementation


## Instance methods:

  compose
  decompose
  default_normalization_form
  default_normalization_form=
  tidy_bytes