wezterm.lua

-- Pull in the wezterm API #
local wezterm = require("wezterm")

local function is_vim(pane)
	-- this is set by the plugin, and unset on ExitPre in Neovim
	return pane:get_user_vars().IS_NVIM == "true"
end

-- This will hold the configuration.
local config = wezterm.config_builder()

local direction_keys = {
	Left = "h",
	Down = "j",
	Up = "k",
	Right = "l",
	-- reverse lookup
	h = "Left",
	j = "Down",
	k = "Up",
	l = "Right",
}
local function split_nav(resize_or_move, key)
	return {
		key = key,
		mods = resize_or_move == "resize" and "META" or "CTRL",
		action = wezterm.action_callback(function(win, pane)
			if is_vim(pane) then
				-- pass the keys through to vim/nvim
				win:perform_action({
					SendKey = { key = key, mods = resize_or_move == "resize" and "META" or "CTRL" },
				}, pane)
			else
				if resize_or_move == "resize" then
					win:perform_action({ AdjustPaneSize = { direction_keys[key], 3 } }, pane)
				else
					win:perform_action({ ActivatePaneDirection = direction_keys[key] }, pane)
				end
			end
		end),
	}
end
-- This is where you actually apply your config choices

-- For example, changing the color scheme:
config.color_scheme = "Solarized Dark (Gogh)"
config.font = wezterm.font("Red Hat Mono")
config.window_decorations = "RESIZE"
config.hide_tab_bar_if_only_one_tab = true
-- Leader is the same as my old tmux prefix
config.leader = { key = "b", mods = "CTRL", timeout_milliseconds = 1000 }
config.keys = {
	-- splitting
	{
		mods = "LEADER",
		key = "-",
		action = wezterm.action.SplitVertical({ domain = "CurrentPaneDomain" }),
	},
	{
		mods = "LEADER",
		key = "%",
		action = wezterm.action.SplitHorizontal({ domain = "CurrentPaneDomain" }),
	},
	{
		mods = "LEADER",
		key = "z",
		action = wezterm.action.TogglePaneZoomState,
	},
	split_nav("move", "h"),
	split_nav("move", "j"),
	split_nav("move", "k"),
	split_nav("move", "l"),
	-- resize panes
	split_nav("resize", "h"),
	split_nav("resize", "j"),
	split_nav("resize", "k"),
	split_nav("resize", "l"),
}

config.send_composed_key_when_left_alt_is_pressed = true

-- and finally, return the configuration to wezterm
return config