Method EscapeAllUpper

csharp/src/Fory/MetaString.cs:378–395

(string input)

    }

    private static string EscapeAllUpper(string input)
    {
        StringBuilder sb = new(input.Length * 2);
        foreach (char c in input)
        {
            if (char.IsUpper(c))
            {
                sb.Append('|');
                sb.Append(char.ToLowerInvariant(c));
            }
            else
            {
                sb.Append(c);
            }
        }

        return sb.ToString();
    }

    private static bool IsLatin(string input)
    {