Add local.lua example config to comment

wezterm.lua

@@ -1,15 +1,22 @@
 local wezterm = require('wezterm')
 local config = wezterm.config_builder()
 
-config.default_prog = {
+wezterm.on('gui-startup', function()
+  local tab, pane, window = wezterm.mux.spawn_window({})
+  tab:set_title('home')
+end)
+
+if string.find(wezterm.target_triple, 'windows') then
+  config.default_prog = {
     'powershell.exe', '-ExecutionPolicy', 'Bypass', '-NoLogo', '-NoExit'
-}
+  }
+end
 
 config.font = wezterm.font('CaskaydiaCove Nerd Font Mono')
 config.font_size = 9
 config.harfbuzz_features = { 'calt=0', 'clig=0', 'liga=0' }
 
-config.color_scheme = 'Tango (terminal.sexy)'
+config.color_scheme = 'Firefly Traditional'
 config.colors = {
   foreground = '#D3D7CF',
   cursor_fg = 'black',
@@ -44,16 +51,31 @@ config.keys = {
     mods = 'CTRL|SHIFT',
     action = wezterm.action.CloseCurrentPane { confirm = true },
   },
+  -- TODO: Make CTRL|SHIFT T open in home directory
+  -- TODO: Make CTRL|ALT " open in current directory
+  -- TODO: Make CTRL|ALT % open in current directory
 }
 
-local move_mods = 'CTRL|SHIFT'
-local function send_key(window, pane)
-  -- TODO: Detect if tmux is running
-  -- Detect if vim/nvim is running
-  -- Failing that, check if there is only a single pane
+local function send_move_key(window, pane)
+  -- TODO: Detect if vim/nvim is running
+  -- We can't use pane:get_foreground_process_info() because it appears to
+  -- contain info about the most recent process launched in the pane. During
+  -- testing this was lua-language-server.exe so obisouly can't be used to
+  -- determine if we're running inside neovim.
+  -- WezTerm supports the OSC 1337 SetUserVar escape sequence, this could be
+  -- used to inform WezTerm that neovim is running in a given tab.
+
+  if pane:get_user_vars()['vim'] ~= nil then
+    if pane:get_user_vars().vim ~= '1' then
       return false
+    end
+  elseif #window:active_tab():panes() > 1 then
+    return false
+  end
+  return true
 end
 
+local move_mods = 'CTRL'
 for _, map in pairs({
   { key = 'h', direction = 'Left' },
   { key = 'l', direction = 'Right' },
@@ -64,9 +86,9 @@ for _, map in pairs({
     key = map.key,
     mods = move_mods,
     action = wezterm.action_callback(function(window, pane)
-      if send_key(window, pane) then
+      if send_move_key(window, pane) then
         window:perform_action(
-          wezterm.action.SendKey({ key = map.key, modes = move_mods }), pane)
+          wezterm.action.SendKey({ key = map.key, mods = move_mods }), pane)
       else
         window:perform_action(
           wezterm.action.ActivatePaneDirection(map.direction), pane)
@@ -75,4 +97,21 @@ for _, map in pairs({
   })
 end
 
+-- Attempt require(module) load a module, don't fail if its missing.
+-- Additionally, call the returned function passing in the wezterm and config
+-- objects defined in this file.
+local try_require = function(module)
+  pcall(function() require(module)(wezterm, config) end)
+end;
+
+-- Example of ~/.config/wezterm/local.lua to set the window size
+--
+-- ```lua
+-- return function(wezterm, config)
+--   config.initial_rows = 107
+--   config.initial_cols = 322
+-- end
+-- ```
+try_require('local')
+
 return config