fn-error-context 0.2.1

An attribute macro to add context to errors from a function.
Documentation 
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# fn-error-context


An attribute macro to add context to errors from a function.

```
#[context("failed to parse config at `{}`", path.display())]

pub fn parse_config(path: &Path) -> anyhow::Result<u32> {
    let text = read_to_string(path)?;
    Ok(text.parse()?)
}
```