Better display and completion of hints

[AndreaOrru]

Assuming Hinter is designed to work similarly to the completion mechanism offered by fish and prompt-toolkit, there are a couple of things that need to be adjusted:

• Accept the completion using Ctrl-E instead of (or in addition to) Right. See Use Ctrl-E for hint completion #407.
• Show the hint in a different color (i.e. a darker grey).
• Change the color back to default once the hint has been completed.

I've tried to return a colored string from the hint function, and it works (with some tweaks), but there's no way to change the color back to white after completion. Suggestions welcome.

[gwenn]

See CompleteHint command:
https://docs.rs/rustyline/6.2.0/rustyline/enum.Cmd.html#variant.CompleteHint
Mapped to Right key by default:

rustyline/src/keymap.rs

Line 496 in be20cfa

KeyPress::Right if wrt.has_hint() && wrt.is_cursor_at_end() => Cmd::CompleteHint,

You can associate Ctrl-E to CompleteHint with:

    let mut rl = Editor::with_config(config);
    rl.bind_sequence(KeyPress::Ctrl('E'), Cmd:: CompleteHint);

[AndreaOrru]

Hi @gwenn, thanks for your answer. That's not what I want though. Ctrl-E may also be used to go to the end of the line when no hint is available - the binding you're suggesting overrides that behaviour. My PR #407 addresses that.

Still looking for solutions for issue n. 2 & 3. 🤔

[gwenn]

See highlight_hint
and highlight for 2 & 3.
And see #306 (and associated PR) to bind one action conditionally.

[AndreaOrru]

Thank you! I solved my issues 2 & 3 with highlight_hint.

I appreciate the PR you linked would solve my issue n. 1. However, I still think Ctrl-E should complete the hint by default, like in fish and prompt-toolkit.