Macro include_markdown 

include_markdown!() { /* proc-macro */ }

Include code from within a code fence in a markdown file.

Two arguments are required: a file path relative to the current source file, and a name defined within the code fence as shown below.

All CommonMark code fences are supported.

Examples

Consider the following code fence in a crate README.md markdown file:

```rust example
let m = example()?;
assert_eq!(format!("{m:?}"), r#"Model { name: "example" }"#);
```

In Rust documentation comments, we can use # line to hide setup code. That’s not possible in markdown, so we can include only the code we want to demonstrate; however, we can still compile and even run it in Rust tests:

struct Model {
    name: String,
}

fn example() -> Result<Model, Box<dyn std::error::Error>> {
    Ok(Model { name: "example".into() })
}

#[test]
fn test_example() -> Result<(), Box<dyn std::error::Error>> {
    include_markdown!("../README.md", "example");
    Ok(())
}