Prompt styling

The REPL uses bevy_ratatui for rendering the prompt and input buffer. The prompt renderer is configured via ReplPromptConfig. The default renderer is a simple 1-line bottom prompt with a symbol and input buffer.

For now, we only support a "partial-TUI" approach where the REPL and terminal outputs are rendered to the main terminal screen. Ratatui alternate screens are available if you add bevy_ratatui::RatatuiPlugins to your app before ReplPlugins. Support for Ratatui alternate screens is experimental.

use bevy::prelude::*;

fn main() {
    App::new()
        .add_plugins((
            DefaultPlugins,
            bevy_ratatui::RatatuiPlugins::default(),
            bevy_repl::ReplPlugins,
        ))
        .run();
}

Example: alt_screen.rs

The REPL prompt supports basic configuration via the ReplPromptConfig resource.

You can configure the prompt symbol:

#![allow(unused)]
fn main() {
app.insert_resource(ReplPromptConfig { symbol: Some("> ".to_string()) });
}

More advanced prompt styling is not yet implemented for the default prompt renderer. It is possible to do advanced TUI styling with a custom renderer, though. See examples/custom_renderer.rs.