Neovim 系列（十一）：打造你的快捷鍵系統——which-key 與 Leader Key 設計哲學

按下 <Space>（leader key）後等待...

┌─────────────────────────────────┐
│ ╭──── Leader Key ─────────────╮ │
│ │ b → Buffers                 │ │
│ │ c → Code actions            │ │
│ │ d → Delete to void          │ │
│ │ e → Diagnostics             │ │
│ │ f → Find (Telescope)        │ │
│ │ g → Git                     │ │
│ │ h → Hunk (Git changes)      │ │
│ │ l → LSP                     │ │
│ │ q → Quit                    │ │
│ │ s → Split                   │ │
│ │ t → Terminal                │ │
│ │ w → Save                    │ │
│ ╰─────────────────────────────╯ │
└─────────────────────────────────┘

-- lua/plugins/which-key.lua
return {
  "folke/which-key.nvim",
  event = "VeryLazy",
  config = function()
    local wk = require("which-key")
    wk.setup({
      plugins = {
        marks = true,
        registers = true,
        spelling = { enabled = false },
      },
      win = {
        border = "rounded",
      },
      layout = {
        align = "center",
      },
    })

    -- 註冊 Leader Key 的群組名稱
    wk.add({
      { "<leader>b", group = "Buffer" },
      { "<leader>c", group = "Code" },
      { "<leader>f", group = "Find" },
      { "<leader>g", group = "Git" },
      { "<leader>h", group = "Hunk" },
      { "<leader>l", group = "LSP" },
      { "<leader>s", group = "Split" },
      { "<leader>t", group = "Terminal" },
    })
  end,
}

<leader>ff → Find Files（搜尋檔案）
<leader>fg → Find Grep（搜尋文字）
<leader>fb → Find Buffers（搜尋 buffer）
<leader>gs → Git Status
<leader>gc → Git Commits

<leader>w  → 存檔（太常用了，不需要群組）
<leader>q  → 離開
<leader>e  → 顯示診斷（高頻操作）

<leader>fs → Find Symbols（搜尋符號）
<leader>gs → Git Status（Git 狀態）
<leader>hs → Hunk Stage（Stage 變更）