extended latin codepages idea

[joseluis]

I'm not sure how well this fits the current design but it may be useful to have 2 additional extended latin codepages, by adding common diacritics and common special characters for european characters, by dividing the uppercase and lowercase characters in different pages. E.g. for the lowercased:

pub(crate) const LOWER_LATIN_EXT : [char; 64] = [
    '\0', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '_',
    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
    'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'

    // 20x diacritics:
    // acute accent: en, es, nl
    'á', 'é', 'í', 'ó', 'ú',
    // grave accent: en, fr, ca, it, pt
    'à', 'è', 'ì', 'ò', 'ù',
    // diaeresis: ca, de, es, en, eu, gl, nl, pt, sw
    'ä', 'ë', 'ï', 'ö', 'ü',
    // circumflex: fr, pt
    'â', 'ê', 'î', 'ô', 'û',

    // 6x special chars
    'ñ', // es, gl, 
    'ç', // ca, eu, fr, pt
    'ß', // de
    'ø', // da, no
    'æ', // da, en, no
    'å', // da, no, fi, sw

    // not enough space for:
    // ã, õ: pt
    // ð: is
    // ý, ǫ: fo
];

[joseluis]

Another possible variation would gain more useful space for by removing the numbers. It would make enough space to complete the portuguese, icelandic and esperanto alphabets.

pub(crate) const LOWER_LATIN_EXT_B : [char; 64] = [
    // 28
    '\0', '_',
    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
    'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'

    // vowels with diacritics: 24
    //
    // acute accent: en, es, nl
    'á', 'é', 'í', 'ó', 'ú',
    // grave accent: en, fr, ca, it, pt
    'à', 'è', 'ì', 'ò', 'ù',
    // diaeresis: ca, de, es, en, eu, gl, nl, pt, sw
    'ä', 'ë', 'ï', 'ö', 'ü',
    // circumflex: fr, pt
    'â', 'ê', 'î', 'ô', 'û',
    // tilde: fr, pt
    'ã', 'õ',
    // circle: da, fi, no, sw
    'å',
    // breve: eo, be
    'ŭ',

    // consonats with diacrics: 6
    //
    // circumflex: eo
    'ĉ', 'ĝ', 'ĥ', 'ĵ', 'ŝ',
    // tilde: es, gl
    'ñ',

    // other: 5
    'ç', // ca, eu, fr, pt
    'ß', // de
    'ø', // da, no
    'æ', // da, en, no
    'ð', // is

    // there's space for 1 more
    ' '
];

EDIT: forgot about ŝ!