/usr/lib/swipl/library/ext/utf8proc/unicode_security.pl
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 unicode_confusable(+T1, +T2, +Options) is semidet
As unicode_confusable/2. Options:
ignore_intentional(+Bool)
If true, skip the per-character substitution when the source and target form a pair listed in UTS #39 intentional.txt (e.g. Latin A versus Greek capital Alpha). Default false.