Package ccc returns the Unicode [Canonical Combining Class] value for a codepoint.

Package dm provides a way to query Unicode decomposition mappings and perform a custom compatibility decomposition using [compatibility mapping tags].

Package fallback implements [Unicode Character Fallback Substitutions] using the Unicode CLDR 41.0 supplemental data file characters.xml, and an algorithm for enumerating every canonically equivalent string.

Package fold implements operations that map similar characters to a common target.

Package np provides a way to query the Numeric Properties of a Unicode code point.

Package runeio implements a mechanism to read a stream of Unicode code points (runes) from an io.Reader, with an internal buffer to push code points back to the front of the stream to allow limited peeking and rewind.