Use ctrl b as prefix

neovim lazy setup

return {
  "numToStr/Navigator.nvim",
  keys = {
    {
      "<C-w>h",
      "<C-\\><C-n><cmd>NavigatorLeft<cr>",
      desc = "NavigatorLeft",
      silent = true,
      mode = { "v", "n", "i", "t" },
    },
    {
      "<C-w>l",
      "<C-\\><C-n><cmd>NavigatorRight<cr>",
      desc = "NavigatorRight",
      silent = true,
      mode = { "v", "n", "i", "t" },
    },
    {
      "<C-w>k",
      "<C-\\><C-n><cmd>NavigatorUp<cr>",
      desc = "NavigatorUp",
      silent = true,
      mode = { "v", "n", "i", "t" },
    },
    {
      "<C-w>j",
      "<C-\\><C-n><cmd>NavigatorDown<cr>",
      desc = "NavigatorDown",
      silent = true,
      mode = { "v", "n", "i", "t" },
    },
  },
  config = function()
    require("Navigator").setup()
  end,
}

wezterm setup

-- ~/.config/wezterm/wezterm.lua

local wezterm = require("wezterm")
local keys = require("keys")

return {
  keys = keys,
  leader = { key = "b", mods = "CTRL" },
}

-- ~/.config/wezterm/keys.lua

local wezterm = require("wezterm")
local act = wezterm.action

local function isVim(pane)
  return pane:get_foreground_process_name():find("l?n?vim") ~= nil
end

local function activatePane(window, pane, direction, vim_key)
  if isVim(pane) then
    window:perform_action(
      act.Multiple({
        act.SendKey({ key = "w", mods = "CTRL" }),
        act.SendKey({ key = vim_key }),
      }),
      pane
    )
  else
    window:perform_action(act.ActivatePaneDirection(direction), pane)
  end
end

wezterm.on("ActivatePaneRight", function(window, pane)
  activatePane(window, pane, "Right", "l")
end)
wezterm.on("ActivatePaneLeft", function(window, pane)
  activatePane(window, pane, "Left", "h")
end)
wezterm.on("ActivatePaneUp", function(window, pane)
  activatePane(window, pane, "Up", "k")
end)
wezterm.on("ActivatePaneDown", function(window, pane)
  activatePane(window, pane, "Down", "j")
end)

local keys = {
  { key = "b", mods = "LEADER|CTRL",  action = wezterm.action.SendString("\x02") },
  { key = "h", mods = "LEADER",       action = act.EmitEvent("ActivatePaneLeft") },
  { key = "j", mods = "LEADER",       action = act.EmitEvent("ActivatePaneDown") },
  { key = "k", mods = "LEADER",       action = act.EmitEvent("ActivatePaneUp") },
  { key = "l", mods = "LEADER",       action = act.EmitEvent("ActivatePaneRight") },
 
}

return keys

tmux setup

is_vim="ps -o state= -o comm= -t '#{pane_tty}' | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|l?n?vim?x?)(diff)?$'"

bind 'h' if-shell "$is_vim" 'send-keys C-w h' 'select-pane -L'
bind 'j' if-shell "$is_vim" 'send-keys C-w j' 'select-pane -D'
bind 'k' if-shell "$is_vim" 'send-keys C-w k' 'select-pane -U'
bind 'l' if-shell "$is_vim" 'send-keys C-w l' 'select-pane -R'