> On Sat, 12 Mar 2016, Florian Haftmann wrote: > >> * A type of infinitely many characters could serve a model for unicode >> characters. > > Unicode has only finitely many code points. Presently, 21 bits are > sufficient to encode that. > > Does it make sense to have a char type with somewhat "unspecified" size. > I.e. one that might change over the years, like Unicode does?
I had something similar in mind when I wrote this. My idea would be to have a type of infinitely many characters where only a defined (but monotonously growing) prefix is associated with glyphs for concrete syntax. Florian > > > Makarius > _______________________________________________ > isabelle-dev mailing list > isabelle-...@in.tum.de > https://mailmanbroy.informatik.tu-muenchen.de/mailman/listinfo/isabelle-dev -- PGP available: http://isabelle.in.tum.de/~haftmann/pgp/florian_haftmann_at_informatik_tu_muenchen_de
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