| /// This is the Vietnamese encoding for Windows. |
| /// |
| /// [Index visualization](https://encoding.spec.whatwg.org/windows-1258.html), |
| /// [Visualization of BMP coverage](https://encoding.spec.whatwg.org/windows-1258-bmp.html) |
| /// |
| /// This encoding matches the Windows code page 1258 when used in the |
| /// non-normalizing mode. Unlike with the other single-byte encodings, the |
| /// result of decoding is not necessarily in Normalization Form C. On the |
| /// other hand, input in the Normalization Form C is not encoded without |
| /// replacement. In general, it's a bad idea to encode to encodings other |
| /// than UTF-8, but this encoding is especially hazardous to encode to. |