Handling the ESCape key about gocui HOT 5 CLOSED

The PR #56 makes the KeyESC binding work correctly.

from gocui.

Hi @phf,

On one hand, I hardcoded it to avoid adding "tricky" options to the gocui's API, making it simple for the users.

On the other hand, I chose inputMode := termbox.InputAlt because I think it's more "compatible". From the termbox-go documentation:

    1. Esc input mode. When ESC sequence is in the buffer and it doesn't
    match any known sequence. ESC means KeyEsc. This is the default input
    mode.

    2. Alt input mode. When ESC sequence is in the buffer and it doesn't
    match any known sequence. ESC enables ModAlt modifier for the next
    keyboard event.

I always remember having troubles, depending on the terminal emulator, to make the ALT/META key works. So, you ended up using 'ESC+' or mapping ALT/META to 'ESC+'. The same happens in OSX and, for instance, iTerm2 recommends:

So, for example, when you press "ALT+2", it will send ESC+2. To bind this combination in gocui, you can use:

if err := g.SetKeybinding("someView", '2', gocui.ModAlt, someFunc); err != nil {
                return err
}

Because it uses termbox.InputAlt by default. And, this is the rationale to take this decision.

from gocui.

I'm trying to create an editor interface similar to vim with a normal mode and an insert mode. It feels like it should be easy to do this, but when I bind j in ModAlt mode I have to press Esc every time. What am I missing?

    if err := g.SetKeybinding("main", 'j', gocui.ModAlt, cursorDown); err != nil {
        return err
    }

from gocui.

@micronix please take a look at my previous comment. There you have the explanation and solution to that.

from gocui.

Closed due to inactivity.

from gocui.