CMD+K Issue with vim-tmux-navigator Plugin

[aharoJ]

CMD+K Issue with vim-tmux-navigator Plugin

Issue

When using the vim-tmux-navigator plugin, the CMD+K keyboard shortcut, which is typically used to clear the terminal screen, stops working. This issue seems to arise after installing the plugin.

Expected Behavior

Normally, pressing CMD+K in the terminal clears the visible screen content, providing a clean slate. This is a built-in shortcut in many terminal emulators, including Alacritty, iTerm2, and Terminal.app on macOS.

Actual Behavior

After installing the vim-tmux-navigator plugin, the CMD+K shortcut does not clear the terminal as expected. Instead, there is no response, and the screen content remains unchanged.

Steps to Reproduce

1. Open a tmux session using Alacritty or another terminal emulator.
2. Press CMD+K to clear the screen — it works as expected.
3. Install the vim-tmux-navigator plugin following the provided installation instructions.
4. Reload tmux configuration or start a new tmux session.
5. Press CMD+K again and observe that the screen is not cleared.

[christoomey]

I'm surprised to hear this as the plugin shouldn't impact Cmd+K (only Ctrl+k). Can you confirm that this works in a bare tmux session (without the plugin configured), and likewise in your terminal without tmux active?

Ultimately I'm guessing Alacritty is mapping Cmd+K to something more familiar to the underlying shell, but not sure about the specifics. As a note, I use Ctrl-l to clear the screen (just scrolls the previous lines off the screen, but that's all I care about), and use this configuration to enable Ctrl-l when using this plugin.

[body20002]

I have the same issue disabling the plugin fixes the issue, I have no clue why

to reproduce

## home-manager.nix
programs = {
    kitty = {
      enable = true;
      font = {
        size = 12;
      };
      settings = {
        mouse_hide_wait = "1.0";
        window_padding_width = "2";
        bold_font = "auto";
        italic_font = "auto";
        bold_italic_font = "auto";
      };
      keybindings = {
        "alt+l" = "send_text all,program \\x0c";
      };
    };
    tmux = {
      enable = true;
      baseIndex = 1;
      mouse = true;

      extraConfig = ''
        bind -n M-l send-keys -k \; send-keys "clear" Enter
      '';
      plugins = with pkgs.tmuxPlugins; [
        (
          vim-tmux-navigator.overrideAttrs
            (_: {
              src = pkgs.fetchFromGitHub {
                owner = "christoomey";
                repo = "vim-tmux-navigator";
                rev = "424b5caa154bff34dc258ee53cec5a8e36cf7ea8";
                sha256 = "sha256-ZwJuBG0P20eQ9uVHeWF4Z8AaFo14MxNSCdjW/O6vLws=";
              };
            })
        )
      ];
    };
};

tmux version: 3.4
kitty version: 0.34.1

let me know if you need the kitty.conf & tmux.conf