From b9fae994cb2ea78da014fabd73b715e9f31a0bcc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9ana=20=E6=B1=9F?= <leana.jiang+git@icloud.com>
Date: Mon, 28 Jul 2025 00:23:02 +0200
Subject: [PATCH] nvim: once helper

---
 .config/nvim/lua/once.lua | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 .config/nvim/lua/once.lua

diff --git a/.config/nvim/lua/once.lua b/.config/nvim/lua/once.lua
new file mode 100644
index 00000000..a3979b24
--- /dev/null
+++ b/.config/nvim/lua/once.lua
@@ -0,0 +1,15 @@
+-- A helper that prevents something to be loaded more than once
+M = {}
+
+---@param label string
+---@param callback function
+function M.test_and_load(label, callback)
+    local once = vim.g.once or {}
+    if not once[label] then
+        callback()
+        once[label] = true
+        vim.g.once = once
+    end
+end
+
+return M