A basic rustc lint plugin for checking for copy-paste
duplication. This will warn about if and match branches with
duplicated conditions or contents.
```toml
[package] name = "example" version = "0.1.0" authors = ["You youremail@example.com"]
[dependencies.copypasteck] git = "https://github.com/huonw/copypasteck" ```
```rust // src/main.rs
fn main() { let a = 10i; if a > 5 { println!("hi"); } else if a > 5 { println!("bye"); } } ```
$ cargo build
Updating git repository `https://github.com/huonw/copypasteck`
Compiling copypasteck v0.1.0 (https://github.com/huonw/copypasteck)
Compiling example v0.1.0 (file:...)
.../src/main.rs:9:15: 9:20 warning: contents of `if` condition identical to previous condition; was there a copy-paste error?, #[warn(copy_paste)] on by default
.../src/main.rs:9 } else if a > 5 {
^~~~~
.../src/main.rs:7:8: 7:13 note: previous condition here
.../src/main.rs:7 if a > 5 {
^~~~~
This is distributed under the same terms as Rust itself, dual MIT and
Apache. See LICENSE-*.