My config to replace tmux completely

[zenithyr]

To avoid parsing input twice: one by the multiplexer, one by the terminal, I am thrilled to have found wezterm.
Spent some time and came up with below. Ideally one should be able to switch with minimal interruptions.
I remapped leader key to the backtick (`)

Thanks to the author & the community.

local wezterm = require 'wezterm';
local act = wezterm.action

if wezterm.target_triple == 'x86_64-pc-windows-msvc' then
  -- font_dirs = {
  --     'C:\\Users\\whoami\\.dotfiles\\.fonts'
  -- }
  default_prog = {'wsl.exe', '~', '-d', 'Ubuntu-20.04'}
end

if wezterm.target_triple == 'x86_64-apple-darwin' then
  -- font_dirs    = { '$HOME/.dotfiles/.fonts' }
end

if wezterm.target_triple == 'x86_65-unknown-linux-gnu' then
  -- font_dirs    = { '$HOME/.dotfiles/.fonts' }
end

return {
  check_for_updates=true,
  term = "xterm-256color",
  use_ime = true,

  ----------------
  -- Appearance --
  ----------------
  window_background_opacity = 0.99,
  color_scheme = "Google (light) (terminal.sexy)",
  window_padding = {
    left = 3, right = 3,
    top = 3, bottom = 3,
  },

  inactive_pane_hsb = {
    saturation = 0.9,
    brightness = 0.7,
  },

  initial_rows = 50,
  initial_cols = 140,

  use_fancy_tab_bar = false,
  hide_tab_bar_if_only_one_tab = true,
	tab_bar_at_bottom=true,
	-- How many lines of scrollback you want to retain per tab
	scrollback_lines = 3500,
	enable_scroll_bar = true,

        -----------
        -- Fonts --
        -----------
        --disable_default_key_bindings = true,
        --line_height = 1,
	font = wezterm.font("Fira Code"),
	font = wezterm.font("JetBrains Mono", {weight="Bold", italic=false}),
	font_size = 14.0,

        -----------
        -- Keys  --
        -----------
	-- Rather than emitting fancy composed characters when alt is pressed, treat the
	-- input more like old school ascii with ALT held down
	send_composed_key_when_left_alt_is_pressed = false,
	send_composed_key_when_right_alt_is_pressed = false,

        -- change here to key="b", mods="CMD" for ^+b equivalent in tmux.
	leader = { key="`", mods="NONE", timeout_milliseconds=1000 },
	keys = {
		{key = "LeftArrow" , mods = "OPT", action = act.SendString("\x1bb")},
		{key = "RightArrow", mods = "OPT", action = act.SendString("\x1bf")},

                -- The physical CMD key on OSX is the Alt key on Win/*nix, so map the common Alt-combo commands.
		{key = ".", mods = "CMD", action = act.SendString("\x1b.")},
		{key = "p", mods = "CMD", action = act.SendString("\x1bp")},
		{key = "n", mods = "CMD", action = act.SendString("\x1bn")},
		{key = "b", mods = "CMD", action = act.SendString("\x1bb")},
		{key = "f", mods = "CMD", action = act.SendString("\x1bf")},

		-- Window management
		{key="a",  mods="LEADER", action=act{SendString="`"}},
		{key="-",  mods="LEADER", action=act{SplitVertical={domain="CurrentPaneDomain"}} },
		{key="\\", mods="LEADER", action=act.SplitHorizontal{domain="CurrentPaneDomain"}},
		{key="z" , mods="LEADER", action="TogglePaneZoomState" },
		{key="c" , mods="LEADER", action=act{SpawnTab="CurrentPaneDomain"}},

		{key="h", mods="LEADER", action=act.ActivatePaneDirection("Left")},
		{key="j", mods="LEADER", action=act.ActivatePaneDirection("Down")},
		{key="k", mods="LEADER", action=act.ActivatePaneDirection("Up")},
		{key="l", mods="LEADER", action=act.ActivatePaneDirection("Right")},

		{key="H", mods="LEADER", action=act{AdjustPaneSize={"Left", 5}}},
		{key="J", mods="LEADER", action=act{AdjustPaneSize={"Down", 5}}},
		{key="K", mods="LEADER", action=act{AdjustPaneSize={"Up", 5}}},
		{key="L", mods="LEADER", action=act{AdjustPaneSize={"Right", 5}}},

		{key="`", mods="LEADER", action=act.ActivateLastTab},
		{key=" ", mods="LEADER", action=act.ActivateTabRelative(1)},
		{key="1", mods="LEADER", action=act{ActivateTab=0}},
		{key="2", mods="LEADER", action=act{ActivateTab=1}},
		{key="3", mods="LEADER", action=act{ActivateTab=2}},
		{key="4", mods="LEADER", action=act{ActivateTab=3}},
		{key="5", mods="LEADER", action=act{ActivateTab=4}},
		{key="6", mods="LEADER", action=act{ActivateTab=5}},
		{key="7", mods="LEADER", action=act{ActivateTab=6}},
		{key="8", mods="LEADER", action=act{ActivateTab=7}},
		{key="9", mods="LEADER", action=act{ActivateTab=8}},
		{key="x", mods="LEADER", action=act{CloseCurrentPane={confirm=true}}},

                -- Activate Copy Mode
		{key="[", mods="LEADER", action=act.ActivateCopyMode},
                -- Paste from Copy Mode
                {key="]", mods="LEADER", action=act.PasteFrom("PrimarySelection")},
	},

  key_tables = {
    -- added new shortcuts to the end
    copy_mode = {
      {key="c", mods="CTRL", action=act.CopyMode("Close")},
      {key="g", mods="CTRL", action=act.CopyMode("Close")},
      {key="q", mods="NONE", action=act.CopyMode("Close")},
      {key="Escape", mods="NONE", action=act.CopyMode("Close")},

      {key="h", mods="NONE", action=act.CopyMode("MoveLeft")},
      {key="j", mods="NONE", action=act.CopyMode("MoveDown")},
      {key="k", mods="NONE", action=act.CopyMode("MoveUp")},
      {key="l", mods="NONE", action=act.CopyMode("MoveRight")},

      {key="LeftArrow",  mods="NONE", action=act.CopyMode("MoveLeft")},
      {key="DownArrow",  mods="NONE", action=act.CopyMode("MoveDown")},
      {key="UpArrow",    mods="NONE", action=act.CopyMode("MoveUp")},
      {key="RightArrow", mods="NONE", action=act.CopyMode("MoveRight")},

      {key="RightArrow", mods="ALT",  action=act.CopyMode("MoveForwardWord")},
      {key="f",          mods="ALT",  action=act.CopyMode("MoveForwardWord")},
      {key="Tab",        mods="NONE", action=act.CopyMode("MoveForwardWord")},
      {key="w",          mods="NONE", action=act.CopyMode("MoveForwardWord")},

      {key="LeftArrow", mods="ALT",   action=act.CopyMode("MoveBackwardWord")},
      {key="b",         mods="ALT",   action=act.CopyMode("MoveBackwardWord")},
      {key="Tab",       mods="SHIFT", action=act.CopyMode("MoveBackwardWord")},
      {key="b",         mods="NONE",  action=act.CopyMode("MoveBackwardWord")},

      {key="0",     mods="NONE",  action=act.CopyMode("MoveToStartOfLine")},
      {key="Enter", mods="NONE",  action=act.CopyMode("MoveToStartOfNextLine")},

      {key="$",     mods="NONE",  action=act.CopyMode("MoveToEndOfLineContent")},
      {key="$",     mods="SHIFT", action=act.CopyMode("MoveToEndOfLineContent")},
      {key="^",     mods="NONE",  action=act.CopyMode("MoveToStartOfLineContent")},
      {key="^",     mods="SHIFT", action=act.CopyMode("MoveToStartOfLineContent")},
      {key="m",     mods="ALT",   action=act.CopyMode("MoveToStartOfLineContent")},

      {key=" ", mods="NONE",  action=act.CopyMode{SetSelectionMode="Cell"}},
      {key="v", mods="NONE",  action=act.CopyMode{SetSelectionMode="Cell"}},
      {key="V", mods="NONE",  action=act.CopyMode{SetSelectionMode="Line"}},
      {key="V", mods="SHIFT", action=act.CopyMode{SetSelectionMode="Line"}},
      {key="v", mods="CTRL",  action=act.CopyMode{SetSelectionMode="Block"}},

      {key="G", mods="NONE",  action=act.CopyMode("MoveToScrollbackBottom")},
      {key="G", mods="SHIFT", action=act.CopyMode("MoveToScrollbackBottom")},
      {key="g", mods="NONE",  action=act.CopyMode("MoveToScrollbackTop")},

      {key="H", mods="NONE",  action=act.CopyMode("MoveToViewportTop")},
      {key="H", mods="SHIFT", action=act.CopyMode("MoveToViewportTop")},
      {key="M", mods="NONE",  action=act.CopyMode("MoveToViewportMiddle")},
      {key="M", mods="SHIFT", action=act.CopyMode("MoveToViewportMiddle")},
      {key="L", mods="NONE",  action=act.CopyMode("MoveToViewportBottom")},
      {key="L", mods="SHIFT", action=act.CopyMode("MoveToViewportBottom")},

      {key="o", mods="NONE",  action=act.CopyMode("MoveToSelectionOtherEnd")},
      {key="O", mods="NONE",  action=act.CopyMode("MoveToSelectionOtherEndHoriz")},
      {key="O", mods="SHIFT", action=act.CopyMode("MoveToSelectionOtherEndHoriz")},

      {key="PageUp",   mods="NONE", action=act.CopyMode("PageUp")},
      {key="PageDown", mods="NONE", action=act.CopyMode("PageDown")},

      {key="b", mods="CTRL", action=act.CopyMode("PageUp")},
      {key="f", mods="CTRL", action=act.CopyMode("PageDown")},

      -- Enter y to copy and quit the copy mode.
      {key="y", mods="NONE", action=act.Multiple{
        act.CopyTo("ClipboardAndPrimarySelection"),
        act.CopyMode("Close"),
      }},
      -- Enter search mode to edit the pattern.
      -- When the search pattern is an empty string the existing pattern is preserved
      {key="/", mods="NONE", action=act{Search={CaseSensitiveString=""}}},
      {key="?", mods="NONE", action=act{Search={CaseInSensitiveString=""}}},
      {key="n", mods="CTRL", action=act{CopyMode="NextMatch"}},
      {key="p", mods="CTRL", action=act{CopyMode="PriorMatch"}},
    },

    search_mode = {
      {key="Escape", mods="NONE", action=act{CopyMode="Close"}},
      -- Go back to copy mode when pressing enter, so that we can use unmodified keys like "n"
      -- to navigate search results without conflicting with typing into the search area.
      {key="Enter", mods="NONE", action="ActivateCopyMode"},
      {key="c", mods="CTRL", action="ActivateCopyMode"},
      {key="n", mods="CTRL", action=act{CopyMode="NextMatch"}},
      {key="p", mods="CTRL", action=act{CopyMode="PriorMatch"}},
      {key="r", mods="CTRL", action=act.CopyMode("CycleMatchType")},
      {key="u", mods="CTRL", action=act.CopyMode("ClearPattern")},
    },
  },
}

[chichid]

RIP Tmux lol! I f*king hate tmux.

[masriomarm]

So, How do we de-attach and re-attach a domain? How to save current session for later use after reboot?

[smprather]

Yep. Unfortunately, this is the tmux Killer App for those of us that don't work on our local machine.

[WayenVan]

actually, the domain will open a persistent session just like tmux. You can access the same instance by the same domain name when using different local machine.