HEX
Server: Apache
System: Windows NT MAGNETO-ARM 10.0 build 22000 (Windows 10) AMD64
User: Michel (0)
PHP: 7.4.7
Disabled: NONE
$ pwd: C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/mail-2.7.1/lib/mail/parsers/
Upload Files
File: C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/mail-2.7.1/lib/mail/parsers/rfc3629_utf8.rl
%%{
  # RFC 3629 4. Syntax of UTF-8 Byte Sequences
  # https://tools.ietf.org/html/rfc3629#section-4
  machine rfc3629_utf8;
  alphtype int;

  utf8_tail  = 0x80..0xBF;

  utf8_2byte = 0xC2..0xDF utf8_tail;
  utf8_3byte = 0xE0       0xA0..0xBF  utf8_tail |
               0xE1..0xEC utf8_tail   utf8_tail |
               0xED       0x80..0x9F  utf8_tail |
               0xEE..0xEF utf8_tail   utf8_tail;
  utf8_4byte = 0xF0       0x90..0xBF  utf8_tail utf8_tail |
               0xF1..0xF3 utf8_tail   utf8_tail utf8_tail |
               0xF4       0x80..0x8F  utf8_tail utf8_tail;

  utf8_non_ascii = utf8_2byte | utf8_3byte | utf8_4byte;
}%%
@ Telegram