Hyper: Certain Tmux Meta (Alt) key bindings don't work

[flybayer]

• [x] I am on the latest Hyper.app version
• [x] I have searched the issues of this repo and believe that this is not a duplicate

• OS version and name: macOS 10.11.6
• Hyper.app version: 1.0.1
• Link of a Gist with the contents of your .hyper.js: https://gist.github.com/flybayer/422d38acfcde635a6d333a7f66179e04
• Relevent information from devtools: N/A
• The issue is reproducible in vanilla Hyper.app: Yes, but only when setting modifierKeys: {altIsMeta: true} since my tmux config depends on that

Issue

I have the following in my .tmux.conf:

bind -n M-i next-window
bind -n M-u previous-window
bind -n M-y last-window

When I have two windows open, Alt-y works to toggle the windows, but neither Alt-i or Alt-u do anything. No response, no errors. These key bindings work fine in other terminals, just not in Hyper.

Any ideas?

P.S. This has been broken for a long time. I'm not sure if it ever worked.

[ppot]

@flybayer I think this is hterm related. Can you tell me how to set those keys in tmux and what they do? Il test it locally and see the problem.

[flybayer]

@ppot

1. Put those three bind lines from my last comment in ~/.tmux.conf
2. Run tmux
3. Press Ctrl-B followed immediately by c (to create a new "window" (essentially a tab))
4. Then press Alt-i or Alt-u or Alt-y to switch between the tmux "windows".

[ppot]

Alright gonna try this! Il keep you posted

[ppot]

@flybayer To test I use iterm2. For me it just make the character ˆ¨¥ inside tmux

[flybayer]

@ppot it works fine for me in iTerm2

But I just realized I have Option set as +Esc under Profiles > Keys

It doesn't work if Option is set to Normal or Meta.

So, maybe we need to add the AltIsPlusEsc option to Hyper, or maybe there is a tmux workaround...

[pertrai1]

@flybayer Can you share your .tmux.conf file - gist? My setup works fine with my config for being able to switch between panes and windows. Maybe it has something to do with you using alt while I use my binding ctrl+a and then | or - for splits, c for new window, and p for going between the windows.

[flybayer]

@pertrai1 here's my tmux.conf. And yes, I think the meta key is the only one with problems.

[pertrai1]

@flybayer - I see the problem you are seeing as well when using meta. Like the tmux setup you have

[curioussavage]

I also have this same issue.

[FelikZ]

Same on Windows 10

[ClaytonJY]

re-confirming w/ Mint 19.1 (~Ubuntu 18.04) and hyper v. 3.0.2.

I used slightly different bindings (alt + arrow, e.g. M-Up, M-Left, etc.), but the issues seems to be the alt modifier not passing into tmux.

[hozza]

@ClaytonJY same here, alt not being passed to tmux (via ssh) even with altIsMeta setting.

[noim210]

I have same issues, Anybody found the solution?
My Alt+j key very rarely work accordingly. most of the time do not do anything.