wezterm.lua

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

local is_windows = wezterm.target_triple:find('windows') ~= nil

-- Default shell: macOS uses Homebrew zsh; on Windows launch zsh inside
-- WSL's default distro from $HOME.
-- Why the full Linuxbrew path: wsl.exe -e bypasses login shells and
-- only inherits /etc/environment's PATH, which does not include
-- /home/linuxbrew/.linuxbrew/bin. A bare `zsh` therefore would not
-- resolve. Once zsh -l starts, zsh/path.zsh adds Linuxbrew to PATH.
-- This path matches install_or_upgrade_login_shell in bin/init/wsl.sh.
local default_prog
if is_windows then
  default_prog = { 'wsl.exe', '--cd', '~', '--', '/home/linuxbrew/.linuxbrew/bin/zsh', '-l' }
else
  default_prog = { '/opt/homebrew/bin/zsh', '--login' }
end

-- Open links and immediately refocus WezTerm so consecutive
-- Cmd+Clicks work without needing a plain click in between.
-- NOTE: open-uri only fires for CompleteSelectionOrOpenLinkAtMouseCursor,
-- NOT for OpenLinkAtMouseCursor (see mouse_bindings below).
-- macOS only: uses /usr/bin/open and osascript. On Windows we leave
-- open-uri unhandled so WezTerm's default ShellExecute path runs.
if not is_windows then
  wezterm.on('open-uri', function(_window, _pane, uri)
    wezterm.run_child_process({ '/usr/bin/open', uri })
    -- Refocus WezTerm after the browser steals focus.
    -- Runs in a background subshell so it doesn't block the UI.
    wezterm.run_child_process({
      '/bin/sh', '-c',
      "(sleep 0.4; osascript -e 'tell application \"WezTerm\" to activate') &",
    })
    return false
  end)
end

local keys = {
  { mods = "CTRL", key = "q", action=wezterm.action{ SendString="\x11" } },
  -- Ctrl+T で現在のディレクトリを保持して新しいタブを開く
  -- OSC 7 (zsh/directory.zsh) + allow-passthrough (.tmux.conf) で CWD を取得
  { mods = "CTRL", key = "t", action = wezterm.action_callback(function(window, pane)
    local cwd_url = pane:get_current_working_dir()
    if cwd_url then
      window:perform_action(act.SpawnCommandInNewTab {
        cwd = cwd_url.file_path,
      }, pane)
    else
      window:perform_action(act.SpawnTab 'CurrentPaneDomain', pane)
    end
  end)},
  -- Cmd+W で現在のtmux windowを閉じる
  { mods = "CMD", key = "w", action = wezterm.action.PromptInputLine {
    description = 'Close tmux window? (y/n)',
    action = wezterm.action_callback(function(window, pane, line)
      if line == 'y' or line == 'Y' then
        -- tmux root table に割り当てた F12 を送る。
        -- 文字列送信しないため、vim や実行中プロセスでも漏れない。
        window:perform_action(act.SendKey { key = 'F12' }, pane)
      end
    end),
  }},
  -- tmux を利用するので今は利用していない
  -- 分割
  -- { mods = "LEADER", key = "v", action = wezterm.action { SplitHorizontal = { domain = "CurrentPaneDomain" } }, },
  -- { mods = "LEADER", key = "s", action = wezterm.action { SplitVertical = { domain = "CurrentPaneDomain" } }, },
  -- { mods = "LEADER", key = "w", action = wezterm.action.CloseCurrentPane { confirm = true } },
  -- 移動
  -- { mods = "LEADER", key = 'h', action = wezterm.action.ActivatePaneDirection 'Left' },
  -- { mods = "LEADER", key = 'j', action = wezterm.action.ActivatePaneDirection 'Down' },
  -- { mods = "LEADER", key = 'k', action = wezterm.action.ActivatePaneDirection 'Up' },
  -- { mods = "LEADER", key = 'l', action = wezterm.action.ActivatePaneDirection 'Right' },
  -- リサイズ
  -- { mods = "LEADER|SHIFT", key = 'h', action = wezterm.action.AdjustPaneSize { 'Left', 15 } },
  -- { mods = "LEADER|SHIFT", key = 'j', action = wezterm.action.AdjustPaneSize { 'Down', 15 } },
  -- { mods = "LEADER|SHIFT", key = 'k', action = wezterm.action.AdjustPaneSize { 'Up', 15 } },
  -- { mods = "LEADER|SHIFT", key = 'l', action = wezterm.action.AdjustPaneSize { 'Right', 15 } },
  -- コピーモード
  -- { mods = "LEADER", key = 'u', action = wezterm.action.ActivateCopyMode },
}

-- Windows 流儀の Ctrl+C / Ctrl+V を有効化。WezTerm の既定は Ctrl+Shift+C /
-- Ctrl+Shift+V だが、Windows ユーザーには馴染みが薄い。Ctrl+C は選択がある
-- ときだけコピーし、無ければ通常通り SIGINT を送るので vim や実行中プロセス
-- を壊さない。macOS では Cmd+C/V が既定なので Windows ターゲット時のみ。
-- Windows: Ctrl+C/V for copy/paste (macOS uses Cmd+C/V natively).
-- Ctrl+C copies when there is a terminal selection; otherwise SIGINT is
-- sent so vim/shell Ctrl+C still works.  Ctrl+V always pastes — vim's
-- visual-block mode is accessible via Ctrl+Q instead.
if is_windows then
  table.insert(keys, { mods = 'CTRL', key = 'c', action = wezterm.action_callback(function(window, pane)
    local sel = window:get_selection_text_for_pane(pane)
    if sel ~= '' then
      window:perform_action(act.CopyTo 'Clipboard', pane)
      window:perform_action(act.ClearSelection, pane)
    else
      window:perform_action(act.SendKey { key = 'c', mods = 'CTRL' }, pane)
    end
  end) })
  table.insert(keys, { mods = 'CTRL', key = 'v', action = act.PasteFrom 'Clipboard' })
end

return {
  -- $TERM value advertised to the shell (and tmux).
  -- tmux's terminal-overrides in .tmux.conf match this value to enable
  -- RGB (true color) and OSC 52 clipboard forwarding.
  term = 'xterm-256color',

  default_prog = default_prog,

  window_padding = {
    left = 0,
    right = 0,
    top = 0,
    bottom = 0,
  },

  font = wezterm.font_with_fallback({
    {family = 'JetBrains Mono', weight = 'Medium', harfbuzz_features = {'calt=0', 'clig=0', 'liga=0'} },
    {family = 'JetBrains Mono', weight = 'Medium', italic = true, harfbuzz_features = {'calt=0', 'clig=0', 'liga=0'} },
    {family = 'Hiragino Kaku Gothic ProN', weight = 'Medium'},
    {family = 'Apple Color Emoji'},
  }),
  font_size = 13,
  line_height = 1.2,

  -- Terminal-level color palette. WezTerm uses this to render all output.
  -- Keep in sync with Neovim's colorscheme (vim/color.vim) so that
  -- ANSI colors and UI chrome share a consistent look.
  color_scheme = 'Everforest Dark (Gogh)',

  show_tab_index_in_tab_bar = false,
  tab_max_width = 120,
  -- Disable two-finger swipe / mouse wheel over the tab bar from switching
  -- tabs. macOS trackpad swipes are easy to trigger accidentally.
  mouse_wheel_scrolls_tabs = false,
  window_frame = {
    font_size = 12,
    font = wezterm.font({ family = 'JetBrains Mono', weight = 'Medium', stretch = 'Expanded' }),
  },

  scrollback_lines = 100000,
  max_fps = 120,
  front_end = 'WebGpu',

  default_cursor_style = 'SteadyBlock',
  force_reverse_video_cursor = true,

  audible_bell = "SystemBeep",
  visual_bell = {
    fade_in_function = 'EaseIn',
    fade_in_duration_ms = 150,
    fade_out_function = 'EaseOut',
    fade_out_duration_ms = 150,
  },
  colors = {
    visual_bell = '#202020',
  },

  -- https://github.com/wez/wezterm/issues/2630
  -- tmux を利用するので今は利用していない
  -- leader = { key = 'q', mods = 'CTRL', timeout_milliseconds = 1000 },

  keys = keys,

  -- Cmd bypasses tmux mouse reporting so Cmd+Click can open links
  bypass_mouse_reporting_modifiers = 'SUPER',

  mouse_bindings = {
    {
        event = { Down = { streak = 1, button = 'Right' } },
        mods = 'NONE',
        action = wezterm.action.PasteFrom 'Clipboard',
    },
  },
}