Perform unicode normalization operations. Options is a list
of operations. Defined operations are:
Unicode Versioning Stability has to be respected.
Compatiblity decomposition (i.e. formatting information is lost)
Return a result with composed characters.
Return a result with decomposed characters.
Strip "default ignorable characters"
Return an error, if the input contains unassigned code points.
Indicating that NLF-sequences (LF, CRLF, CR, NEL) are representing a
line break, and should be converted to the unicode character for line
Indicating that NLF-sequences are representing a paragraph break, and
should be converted to the unicode character for paragraph separation
Indicating that the meaning of NLF-sequences is unknown.
Strips and/or convers control characters. NLF-sequences are transformed
into space, except if one of the NLF2LS/PS/LF options is given.
HorizontalTab (HT) and FormFeed (FF) are treated as a NLF-sequence in
this case. All other control characters are simply removed.
Performs unicode case folding, to be able to do a case-insensitive
Inserts 0xFF bytes at the beginning of each sequence which is
representing a single grapheme cluster (see UAX#29).
(e.g. HYPHEN U+2010 and MINUS U+2212 to ASCII "-"). (See module header
for details.) If NLF2LF is set, this includes a transformation of
paragraph and line separators to ASCII line-feed (LF).
Strips all character markings (non-spacing, spacing and enclosing) (i.e.
accents) NOTE: this option works only with compose or decompose.
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