Unicode (16-bit) character warning

[konstk1]

Whenever a string includes a 16-bit Unicode character, the library keeps printing the warning below. The character is correctly displayed on the matrix screen. So this is more of an annoyance.

"" character not found for the 6x10 font.

I verified this is specific to 16-bit Unicode. I tried a string with \u{ff}, which works fine. Replacing that with \u{100} starts logging that message.

[konstk1]

After some quick research, the place that prints this message uses a for loop to iterate over characters of a string. However, this doesn't work with utf-16.

Here's what it looks like if you try to iterate over

  const string s = "0↑";

  for (auto c : s) {
    cout << uint_least32_t(c) << endl;
  }
-------
  48
  4294967266
  4294967174
  4294967185