[docs] [issue13828] Further improve casefold documentation

Jim Jewett <jimjjewett@gmail.com> added the comment: Frankly, I do think that sample code is too long, but correctness matters ... perhaps a better solution would be to add either a method or a unicodedata function that does the work, then the extra note could just say Note that most case-insensitive matches should also match compatibility equivalent characters; see unicodedata.compatibity_casefold ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue13828> _______________________________________