(mut self, prefix: impl Into<String>)
| 126 | /// ``` |
| 127 | #[must_use] |
| 128 | pub fn prefix(mut self, prefix: impl Into<String>) -> Self { |
| 129 | let p = prefix.into(); |
| 130 | self.prefix = if p.is_empty() { None } else { Some(p) }; |
| 131 | self |
| 132 | } |
| 133 | |
| 134 | /// Set the diff algorithm. |
| 135 | /// |