enable raw mode compatibility for panic & error reports

[slordua]

a project I'm working on utilizes raw mode, invoked via crossterm

this prints reports all funny.. this is my solution in color_eyre for now, but it would be nice to see this integrated more elegantly. an enable_raw_mode: bool in HookBuilder could be ok.

use crossterm::terminal::{disable_raw_mode, enable_raw_mode};

// error
// color_eyre::Handler

impl eyre::EyreHandler for Handler {
    fn debug(
        &self,
        error: &(dyn std::error::Error + 'static),
        f: &mut core::fmt::Formatter<'_>,
    ) -> core::fmt::Result {
        let _ = disable_raw_mode();

        // ..

        let _ = enable_raw_mode();

        Ok(())
    }
}

// panic
pub struct RawModePanic;

impl PanicMessage for RawModePanic {
    fn display(
        &self,
        pi: &std::panic::PanicInfo<'_>,
        f: &mut std::fmt::Formatter<'_>,
    ) -> std::fmt::Result {
        let _ = disable_raw_mode();

        // ..

        Ok(())
    }
}

async fn main() -> Result<()> {
    enable_raw_mode()?;

    color_eyre::config::HookBuilder::default()
        .panic_message(RawModePanic)
        .install()?;

    Ok(())
}

for panic, there's no need to re-enable raw mode as we're exiting, but one thing i'm not accounting for here is un-recoverable error, in which case the terminal would be left in raw on exit. need match on ErrorKind perhaps whether to re-enable or something

[slordua]

solved this by just using a guard with drop impl