Unicode

Returns true if the given char or integer is an assigned Unicode code point.

Examples

Normalize the string s according to one of the four "normal forms" of the Unicode standard: normalform can be , :NFD, :NFKC, or :NFKD. Normal forms C (canonical composition) and D (canonical decomposition) convert different visually identical representations of the same abstract string into a single canonical form, with form C being more compact. Normal forms KC and KD additionally canonicalize "compatibility equivalents": they convert characters that are abstractly similar but visually distinct into a single canonical choice (e.g. they expand ligatures into the individual characters), with form KC being more compact.

Alternatively, finer control and additional transformations may be be obtained by calling Unicode.normalize(s; keywords…), where any number of the following boolean keywords options (which all default to except for compose) are specified:

• decompose=true: do canonical decomposition instead of canonical composition (compose=true is ignored if present)
• compat=true: compatibility equivalents are canonicalized
• newline2lf=true, newline2ls=true, or newline2ps=true: convert various newline sequences (LF, CRLF, CR, NEL) into a linefeed (LF), line-separation (LS), or paragraph-separation (PS) character, respectively
• stripmark=true: strip diacritical marks (e.g. accents)
• stripcc=true: strip control characters; horizontal tabs and form feeds are converted to spaces; newlines are also converted to spaces unless a newline-conversion flag was specified
• rejectna=true: throw an error if unassigned code points are found

Unicode.graphemes — Function.

Returns an iterator over substrings of s that correspond to the extended graphemes in the string, as defined by Unicode UAX #29. (Roughly, these are what users would perceive as single characters, even though they may contain more than one codepoint; for example a letter combined with an accent mark is a single grapheme.)