From b08868cf163866509c9bf08ef29637c41d7879bb Mon Sep 17 00:00:00 2001
From: laily <i@laily.net>
Date: Sat, 27 Jun 2026 14:28:18 +0800
Subject: [PATCH] feat: add sudo write

---
 nvim/lua/config/autocmds.lua |  4 ++++
 nvim/lua/utils/init.lua      | 21 +++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/nvim/lua/config/autocmds.lua b/nvim/lua/config/autocmds.lua
index 881274f..5380f43 100644
--- a/nvim/lua/config/autocmds.lua
+++ b/nvim/lua/config/autocmds.lua
@@ -1,3 +1,7 @@
+vim.api.nvim_create_user_command("W", function()
+	require("utils").sudo_write()
+end, { desc = "Write file with sudo (tee)" })
+
 -- Turn off paste mode when leaving insert
 vim.api.nvim_create_autocmd("InsertLeave", {
 	pattern = "*",
diff --git a/nvim/lua/utils/init.lua b/nvim/lua/utils/init.lua
index aae2e7a..d9f4aca 100644
--- a/nvim/lua/utils/init.lua
+++ b/nvim/lua/utils/init.lua
@@ -28,4 +28,25 @@ function M.file_exists(name)
 	return false
 end
 
+--- 无写权限时用 sudo 保存当前文件（对应 :W）
+function M.sudo_write()
+	local name = vim.api.nvim_buf_get_name(0)
+	if name == "" then
+		vim.notify("W: 当前 buffer 没有文件名", vim.log.levels.ERROR)
+		return
+	end
+
+	local ok, err = pcall(function()
+		vim.cmd("write !sudo tee % > /dev/null")
+		vim.cmd("edit!")
+	end)
+	if not ok then
+		local msg = vim.split(tostring(err), "\n", { plain = true })[1]
+		vim.notify("W: 保存失败 — " .. msg, vim.log.levels.ERROR)
+		return
+	end
+
+	vim.notify("W: 已保存 " .. name, vim.log.levels.INFO)
+end
+
 return M