svoid tok_numberFunctionNames(...) {
  int n = ...;
  ... reToks;
  for (int i = 1; i < n-2; i += 2) {
    S number, id;
    if (isInteger(number = tok.get(i)) && empty(tok.get(i+1)) && isIdentifier(id = tok.get(i+2))) pcall {
      replaceTokens_reTokLater(..., i, i+3, camelCase(numberToEnglish(parseLong(number))) + firstToUpper(id));
    }
  }
  reTok_multi(...);
}

Began life as a copy of #1031769