From ff1d12c8b47cd28723da593b2cfa2e98391d439a Mon Sep 17 00:00:00 2001
From: Chris Griffing <cmgriffing@gmail.com>
Date: Sat, 20 Apr 2024 15:48:46 -0700
Subject: [PATCH] fix: allow BufAttach to be called without a bufnr and lang
 and allow detection via vim and and treesitter (#52)

---
 README.md                  | 41 ++++++++++++++++++++++++++++++++++++++
 lua/nvim-biscuits/init.lua |  9 +++++++++
 2 files changed, 50 insertions(+)

diff --git a/README.md b/README.md
index 73d392f..01c236c 100644
--- a/README.md
+++ b/README.md
@@ -187,6 +187,47 @@ require('nvim-biscuits').setup({
 EOF
 ```
 
+## Configuration (lazy.nvim support)
+
+If you are using [lazy.nvim](https://github.com/folke/lazy.nvim), you will have to wire up nvim-biscuits is a specific way.
+
+Since you are using lazy.nvim, it is recommended to not use the internal nvim-biscuits [visibilty toggle](https://github.com/code-biscuits/nvim-biscuits?tab=readme-ov-file#configuration-keybinding-to-toggle-visibility).
+
+When setting your `keys` value, you just need to call `BufAttach` inside the callback function:
+
+```lua
+keys = {
+  {
+    "<leader>bb",
+    function()
+      require("nvim-biscuits").BufferAttach()
+    end,
+    mode = "n",
+    desc = "Enable Biscuits",
+  },
+},
+```
+
+If you want to lazy load nvim-biscuits but also use the internal visibilty toggle, there are a couple ways of setting things up. If you are letting `show_on_start` default to `false`, you will need to manually toggle the biscuits in the callback function.
+
+```lua
+keys = {
+  {
+    "<leader>bb",
+    function()
+      local nvim_biscuits =
+      require("nvim-biscuits")
+      nvim_biscuits.BufferAttach()
+      nvim_biscuits.toggle_biscuits()
+    end,
+    mode = "n",
+    desc = "Enable Biscuits",
+  },
+},
+```
+
+A cleaner way of doing it is to set `show_on_start` to true for nvim-biscuits. Then, you do not need to call `toggle_biscuits` in your lazy.nvim callback.
+
 ## Supported Languages
 
 We currently support all the languages supported in tree-sitter. Not all languages have specialized support, though most will probably need some.
diff --git a/lua/nvim-biscuits/init.lua b/lua/nvim-biscuits/init.lua
index 7b0839c..e63ccfa 100644
--- a/lua/nvim-biscuits/init.lua
+++ b/lua/nvim-biscuits/init.lua
@@ -177,6 +177,15 @@ end
 
 local attached_buffers = {}
 nvim_biscuits.BufferAttach = function(bufnr, lang)
+
+    if bufnr == nil then
+        bufnr = vim.api.nvim_get_current_buf()
+    end
+
+    if lang == nil then
+        lang = ts_parsers.get_buf_lang(bufnr):gsub("-", "")
+    end
+
     if attached_buffers[bufnr] then return end
 
     attached_buffers[bufnr] = true