Function alnum

extensions/java-modernization-studio/scan.mjs:362–362

(c)

    const s = sig.toLowerCase();
    if (!s) return false;
    const alnum = (c) => (c >= "a" && c <= "z") || (c >= "0" && c <= "9");
    if (!alnum(s[0])) return text.includes(s);
    let from = 0;
    for (;;) {