Terminal: Alt arrow keys do nothing; key unbinding broken?

[paulwhiting]

Environment

Windows build number: 10.0.18362.0
Windows Terminal version:  0.7.3291.0

Any other software?
- Ubuntu 16.04.3 LTS
- byobu version 5.106
- tmux 2.1

Note

This issue is a follow-on to #3101. In that issue superfluous keys were being generated. Now it appears no keys are being generated. Alt arrows are dead to me.

Steps to reproduce

• Start Byobu: byobu
• Create a new Byobu tab: F2
• Press alt left or alt right to switch between the tabs

Expected behavior

Byobu switches between the two tabs.

Actual behavior

Nothing happens.

[paulwhiting]

This behavior is due to #3585. Proper expected behavior is restored with the following:

    "keybindings": [
    { "command": "unbound", "keys": [ "alt+shift+-" ] },
        { "command": "unbound", "keys": [ "alt+shift+plus" ] },
        { "command": "unbound", "keys": [ "alt+down" ] },
        { "command": "unbound", "keys": [ "alt+left" ] },
        { "command": "unbound", "keys": [ "alt+right" ] },
        { "command": "unbound", "keys": [ "alt+up" ] },
        { "command": "unbound", "keys": [ "alt+shift+down" ] },
        { "command": "unbound", "keys": [ "alt+shift+left" ] },
        { "command": "unbound", "keys": [ "alt+shift+right" ] },
        { "command": "unbound", "keys": [ "alt+shift+up" ] }
    ]

[sivaramn]

This behavior is due to #3585. Proper expected behavior is restored with the following:

    "keybindings": [
  { "command": "unbound", "keys": [ "alt+shift+-" ] },
        { "command": "unbound", "keys": [ "alt+shift+plus" ] },
        { "command": "unbound", "keys": [ "alt+down" ] },
        { "command": "unbound", "keys": [ "alt+left" ] },
        { "command": "unbound", "keys": [ "alt+right" ] },
        { "command": "unbound", "keys": [ "alt+up" ] },
        { "command": "unbound", "keys": [ "alt+shift+down" ] },
        { "command": "unbound", "keys": [ "alt+shift+left" ] },
        { "command": "unbound", "keys": [ "alt+shift+right" ] },
        { "command": "unbound", "keys": [ "alt+shift+up" ] }
    ]

I also have the same issue. Do we have to unbind the keys for tmux to work? And what about mouse-focus? Prior to this release, in tmux clicking with mouse on any pane would focus the cursor in that pane. Now apparently that's gone. How does one restore mouse clicky behaviour ?

[zadjii-msft]

I'm confident that clicking in a pane in tmux never worked in the Windows Terminal, since we don't yet support mouse mode (#376, #545)...

[sivaramn]

I'm confident that clicking in a pane in tmux never worked in the Windows Terminal, since we don't yet support mouse mode (#376, #545)...

thanks for that. I could be mistaken, as I use versions of tmux in wsl & cygwin using mintty.

And the key unbounding didn't work. I'm still not able to use the alt keys to switch panes

[zadjii-msft]

@sivaramn what exactly do you have in your profiles.json, and what's in your tmux.conf?

[sivaramn]

bind -n M-Left select-pane -L bind -n M-Right select-pane -R bind -n M-Up select-pane -U bind -n M-Down select-pane -D bind -n S-Left previous-window bind -n S-Right next-window
that's in .tmux.conf

in profiles.json
````
// Add any keybinding overrides to this array.
// To unbind a default keybinding, set the command to "unbound"
"keybindings": [{ "unbound": "nextTab", "keys": ["ctrl+tab"] },
{"command": "paste","keys": ["shift+insert"]},
//{ "keys": ["shift+insert"], "command": "paste" },
{ "keys": ["ctrl+shift+v"], "command": "paste" },
{ "command": "unbound", "keys": [ "alt+shift+-" ] },
{ "command": "unbound", "keys": [ "alt+shift+plus" ] },
{ "command": "unbound", "keys": [ "alt+down" ] },
{ "command": "unbound", "keys": [ "alt+left" ] },
{ "command": "unbound", "keys": [ "alt+right" ] },
{ "command": "unbound", "keys": [ "alt+up" ] },
{ "command": "unbound", "keys": [ "alt+shift+down" ] },
{ "command": "unbound", "keys": [ "alt+shift+left" ] },
{ "command": "unbound", "keys": [ "alt+shift+right" ] },
{ "command": "unbound", "keys": [ "alt+shift+up" ] }

               ]

}
````

[samba2]

...
                  { "command": "unbound", "keys": [ "alt+down" ] },
                  { "command": "unbound", "keys": [ "alt+left" ] },
                    { "command": "unbound", "keys": [ "alt+right" ] },
                    { "command": "unbound", "keys": [ "alt+up" ] },
                    { "command": "unbound", "keys": [ "alt+shift+down" ] },
                    { "command": "unbound", "keys": [ "alt+shift+left" ] },
                    { "command": "unbound", "keys": [ "alt+shift+right" ] },
                    { "command": "unbound", "keys": [ "alt+shift+up" ] }
                   ]
}

Just want do confirm that unbinding the alt key bindings worked for me. tmux resizing is now working as expected.

[fabricio7p]

Thank you so much for this!
This is an issue with Tmux alt key commands too.

[finlaybob]

Thanks for the example keybindings. Adding the unbound entries helped with behaviour in micro, which uses "alt+direction" by default for moving word at a time.

[paulwhiting]

Reopening issue because my alt-arrow buttons stopped working after upgrading Terminal to 0.10.761.0.

Windows build number: 10.0.18363.720
Windows Terminal version: 0.10.761.0

Any other software?

• Ubuntu 16.04.6 LTS
• byobu version 5.106
• tmux 2.1

[DHowett-MSFT]

Yep, fair enough. Bet we broke this with VT input tunneling.

[DHowett-MSFT]

Actually, no, I think we broke _unbinding_. /cc @zadjii-msft.

[yveslange]

Same issue :)
ALT-LEFT, RIGHT, TOP, DOWN does not react. Really feel that the "unbounds" are not working anymore.

[zadjii-msft]

looking now

[onefuncman]

Why is this the default behavior? Seems like a bad UX -- what's the tradeoff?

edit: nevermind, i see the conflict with Panes functionality now

[zadjii-msft]

You know, you've just inspired an idea - if the user has _no_ panes, then the Terminal could probably pass the Alt+Arrow through, similar to the way that Ctrl+C for copy sends a ^C when there's no text selected.