>> `ispell-aspell-find-dictionary' reads the ispell data fromThis fix means that aspell developers added a mapping from
2019 (RIGHT SINGLE QUOTATION MARK) to 27 (APOSTROPHE)
in their character `compat' table. This explains why
`ispell-buffer' does work while `ispell-word' and `flyspell' don't.
`ispell-word' and `flyspell' still use the information from
/usr/lib/aspell/en.dat to parse the buffer to find the next word to check,
and fail because they don't use the `compat' mappings from iso-8859-1.cmap.