| /// This the primary pre-UTF-8 encoding for Japanese email. It uses the ASCII |
| /// byte range to encode non-Basic Latin characters. It's the only encoding |
| /// supported by this crate whose encoder is stateful. |
| /// |
| /// [Index visualization](https://encoding.spec.whatwg.org/jis0208.html), |
| /// [Visualization of BMP coverage](https://encoding.spec.whatwg.org/jis0208-bmp.html) |
| /// |
| /// This encoding roughly matches the Windows code page 50220. Notably, Windows |
| /// uses U+30FB in place of the REPLACEMENT CHARACTER and otherwise differs in |
| /// error handling. |
