Emacs alt-v keybinding triggering solo Alt key in firefox

[anaxonda]

One minor thing...

I'm using the provided emacs keybindings. In Firefox when I use alt-v (page-up), page-up does successfully work, but it also triggers a solo alt press (open menu).

Is there any way to separate an alt pressed separately with one thats part of a key sequence?

[k0kubun]

You could try the virtual_modifiers feature, or use Super instead of Alt. I personally use the latter method myself for this exact problem.

[anaxonda]

You use Super systemwide in lieu of Alt (except in emacs I guess)? Or just in firefox?

Is there any way to make Alt behave as normal Alt when pressed singly, and ignored when held?

[k0kubun]

Yes. This is what you said:

modmap:
  - remap:
      Alt_L:
        held: KEY_UNKNOWN
        alone: Alt_L

but I think you want to put Alt_L in held and Unknown in alone?

[anhhon]

Yes. This is what you said:

modmap:
  - remap:
      Alt_L:
        held: KEY_UNKNOWN
        alone: Alt_L

but I think you want to put Alt_L in held and Unknown in alone?

I use virtual_modifiers with Alt_R and modmap: Alt_R in held and Unknown in alone does work but after using a keybinding such as Alt_R-j for left arrow, I cannot type anything. It behave like the Alt_R is stuck or always pressed.

[k0kubun]

Can you run xremap with RUST_LOG=debug xremap, reproduce the problem, stop xremap, and share the entire output of the xremap command and the config YAML file?

[anhhon]

Here is the output after I run xremap with debug:

[2024-05-21T04:54:45Z DEBUG xremap::event_handler] => 0: KEY_ENTER
[2024-05-21T04:54:45Z DEBUG xremap::action_dispatcher] 0: KEY_ENTER
[2024-05-21T04:54:55Z DEBUG xremap::event_handler] => 1: KEY_RIGHTALT
[2024-05-21T04:54:55Z DEBUG xremap::event_handler] => 1: KEY_I
[2024-05-21T04:54:55Z DEBUG xremap::action_dispatcher] 0: KEY_RIGHTALT
[2024-05-21T04:54:55Z DEBUG xremap::action_dispatcher] 1: KEY_UP
[2024-05-21T04:54:55Z DEBUG xremap::action_dispatcher] 0: KEY_UP
[2024-05-21T04:54:55Z DEBUG xremap::action_dispatcher] 1: KEY_RIGHTALT
[2024-05-21T04:54:55Z DEBUG xremap::event_handler] => 0: KEY_I
[2024-05-21T04:54:55Z DEBUG xremap::action_dispatcher] 0: KEY_I
[2024-05-21T04:54:55Z DEBUG xremap::event_handler] => 0: KEY_RIGHTALT
[2024-05-21T04:55:00Z DEBUG xremap::event_handler] => 1: KEY_I
[2024-05-21T04:55:00Z DEBUG xremap::action_dispatcher] 1: KEY_I
[2024-05-21T04:55:00Z DEBUG xremap::event_handler] => 0: KEY_I
[2024-05-21T04:55:00Z DEBUG xremap::action_dispatcher] 0: KEY_I
[2024-05-21T04:55:01Z DEBUG xremap::event_handler] => 1: KEY_A
[2024-05-21T04:55:01Z DEBUG xremap::action_dispatcher] 1: KEY_A
[2024-05-21T04:55:01Z DEBUG xremap::event_handler] => 0: KEY_A
[2024-05-21T04:55:01Z DEBUG xremap::action_dispatcher] 0: KEY_A
[2024-05-21T04:55:02Z DEBUG xremap::event_handler] => 1: KEY_A
[2024-05-21T04:55:02Z DEBUG xremap::action_dispatcher] 1: KEY_A
[2024-05-21T04:55:02Z DEBUG xremap::event_handler] => 0: KEY_A
[2024-05-21T04:55:02Z DEBUG xremap::action_dispatcher] 0: KEY_A
[2024-05-21T04:55:03Z DEBUG xremap::event_handler] => 1: KEY_A
[2024-05-21T04:55:03Z DEBUG xremap::action_dispatcher] 1: KEY_A
[2024-05-21T04:55:03Z DEBUG xremap::event_handler] => 0: KEY_A
[2024-05-21T04:55:03Z DEBUG xremap::action_dispatcher] 0: KEY_A
[2024-05-21T04:55:05Z DEBUG xremap::event_handler] => 1: KEY_LEFTCTRL
[2024-05-21T04:55:05Z DEBUG xremap::action_dispatcher] 1: KEY_LEFTCTRL
[2024-05-21T04:55:05Z DEBUG xremap::event_handler] => 1: KEY_C
[2024-05-21T04:55:05Z DEBUG xremap::action_dispatcher] 1: KEY_C

This is my YAML file content:

virtual_modifiers:
  - Alt_R

keymap:
  - remap:
      Alt_R-i: Up
      Alt_R-j: Left
      Alt_R-k: Down
      Alt_R-l: Right

      Alt_L-Alt_R-i: KEY_PAGEUP
      Alt_L-Alt_R-j: Home
      Alt_L-Alt_R-k: KEY_PAGEDOWN
      Alt_L-Alt_R-l: End
    
      Shift_L-Alt_L-Alt_R-i: Shift_L-KEY_PAGEUP
      Shift_L-Alt_L-Alt_R-j: Shift_L-Home
      Shift_L-Alt_L-Alt_R-k: Shift_L-KEY_PAGEDOWN
      Shift_L-Alt_L-Alt_R-l: Shift_L-End