.wezterm.lua

-- ~/.wezterm.lua
local wezterm = require 'wezterm'
local config = wezterm.config_builder()

-- Theme & Visuals
config.color_scheme = 'Tokyo Night'
config.font = wezterm.font('JetBrains Mono')
config.font_size = 13.0
config.window_decorations = "RESIZE"
config.window_background_opacity = 0.95
config.macos_window_background_blur = 20
config.use_fancy_tab_bar = true

-- Set Ctrl+\ as the WezTerm multiplexer leader key
config.leader = { key = '\\', mods = 'CTRL', timeout_milliseconds = 1000 }
config.keys = {
  -- Split panes using Leader + | or Leader + -
  {
    key = '|',
    mods = 'LEADER',
    action = wezterm.action.SplitHorizontal { domain = 'CurrentPaneDomain' },
  },
  {
    key = '-',
    mods = 'LEADER',
    action = wezterm.action.SplitVertical { domain = 'CurrentPaneDomain' },
  },
  
  -- Navigate panes using Leader + Arrow Keys
  {
    key = 'LeftArrow',
    mods = 'LEADER',
    action = wezterm.action.ActivatePaneDirection 'Left',
  },
  {
    key = 'RightArrow',
    mods = 'LEADER',
    action = wezterm.action.ActivatePaneDirection 'Right',
  },
  {
    key = 'UpArrow',
    mods = 'LEADER',
    action = wezterm.action.ActivatePaneDirection 'Up',
  },
  {
    key = 'DownArrow',
    mods = 'LEADER',
    action = wezterm.action.ActivatePaneDirection 'Down',
  },

  -- Close current pane with Leader + x
  {
    key = 'x',
    mods = 'LEADER',
    action = wezterm.action.CloseCurrentPane { confirm = true },
  },
}

-- --------------------------------------------------------------------
-- Keyboard Behavior (macOS Command -> Emacs Meta & Linux Clipboard)
-- --------------------------------------------------------------------
-- Map the Command key to act as Meta (Esc+) for keyboard combinations
config.send_composed_key_when_left_alt_is_pressed = false
config.send_composed_key_when_right_alt_is_pressed = false

-- Turn Command key into Meta for standard alphanumeric keys in Emacs
-- This loops through a-z and sends an Escape sequence before the character
for i = 97, 122 do
  local char = string.char(i)
  table.insert(config.keys, {
    key = char,
    mods = 'CMD',
    action = wezterm.action.SendKey { key = char, mods = 'ALT' },
  })
  table.insert(config.keys, {
    key = char,
    mods = 'CMD|SHIFT',
    action = wezterm.action.SendKey { key = char, mods = 'ALT|SHIFT' },
  })
end
local extra_meta_keys = { ',', '.', '<', '>', '/', '?', ';', ':', '[', ']', '{', '}' }
for _, key in ipairs(extra_meta_keys) do
  table.insert(config.keys, {
    key = key,
    mods = 'CMD',
    action = wezterm.action.SendKey { key = key, mods = 'ALT' },
  })
  table.insert(config.keys, {
    key = key,
    mods = 'CMD|SHIFT',
    action = wezterm.action.SendKey { key = key, mods = 'ALT|SHIFT' },
  })
end

return config