[Koha] ICU Chains Configuration for Spanish

I'm having issues searching for the Title ¿Tartamudeas? : una guía para adolescentes / After a bit of poking around, I realized that searching for ¿Tartamudeas? works, but a search for Tartamudeas or Tartamudeas? does not -- i.e. the leading '¿' [Character 'INVERTED QUESTION MARK' (U+00BF)] is not being counted as punctuation, and the resulting search string must match '¿Tartamudea' exactly to get a hit. I think this can be fixed via an icu_chain rule, as would be found in https://wiki.koha-community.org/wiki/ICU_Chains_Library, but we don't have anything on the wiki for locale="es". Has anyone run into this / have a rule that I can use? Thanks, --Barton