1 library(unicode): Unicode string handling
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Availability::- use_module(library(unicode)).(can be autoloaded)
Source[det]unicode_nfkc_casefold(+In, -Out)
Equivalent to unicode_nfkc/2 followed by unicode_casefold/2 done in a single pass. This is the normalisation form recommended by UAX#31 for caseless identifier matching. For example German 'Strasse' written with U+00DF (LATIN SMALL LETTER SHARP S) maps to 'strasse', and U+FB03 (LATIN SMALL LIGATURE FFI) maps to 'ffi'.