SWI-Prolog -- unicode

Documentation
- Reference manual
- Packages
  - SWI-Prolog Unicode library
    - library(unicode_security): Unicode security helpers (UTS #39, UAX #24)

Availability::- use_module(library(unicode_security)).(can be autoloaded)

[det]unicode_skeleton(+Text, -Skeleton:atom)

Compute the UTS #39 Â§4 skeleton of Text: apply NFD, substitute each code point with its confusables.txt prototype string, then apply NFD again. Two strings are confusable iff their skeletons compare equal.