From de96d840182e530bb61f59eaa187f18cdab76e51 Mon Sep 17 00:00:00 2001
From: tastytea <tastytea@tastytea.de>
Date: Mon, 22 Aug 2022 03:12:45 +0200
Subject: [PATCH] add fallback_buffer_dir option

Change root directory to buffer directory if file is outside a project
---
 README.md                    |  3 +++
 lua/project_nvim/config.lua  |  3 +++
 lua/project_nvim/project.lua | 19 +++++++++++--------
 3 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index 3218f47..e4f9e21 100644
--- a/README.md
+++ b/README.md
@@ -115,6 +115,9 @@ use {
   -- directory.
   silent_chdir = true,
 
+  -- Change root directory to the buffer directory if it is outside a project
+  fallback_buffer_dir = false,
+
   -- Path where project.nvim will store the project history for use in
   -- telescope
   datapath = vim.fn.stdpath("data"),
diff --git a/lua/project_nvim/config.lua b/lua/project_nvim/config.lua
index 431c3d4..c6cc199 100644
--- a/lua/project_nvim/config.lua
+++ b/lua/project_nvim/config.lua
@@ -31,6 +31,9 @@ M.defaults = {
   -- directory.
   silent_chdir = true,
 
+  -- Change root directory to the buffer directory if it is outside a project
+  fallback_buffer_dir = false,
+
   -- Path where project.nvim will store the project history for use in
   -- telescope
   datapath = vim.fn.stdpath("data"),
diff --git a/lua/project_nvim/project.lua b/lua/project_nvim/project.lua
index 28fa4b7..b06740c 100644
--- a/lua/project_nvim/project.lua
+++ b/lua/project_nvim/project.lua
@@ -173,18 +173,21 @@ function M.set_pwd(dir, method)
   if dir ~= nil then
     M.last_project = dir
     table.insert(history.session_projects, dir)
+  elseif config.options.fallback_buffer_dir then
+    dir = vim.fn.expand("%:p:h", true)
+    method = "buffer directory fallback"
+  else
+    return false
+  end
 
-    if vim.fn.getcwd() ~= dir then
-      vim.api.nvim_set_current_dir(dir)
+  if vim.fn.getcwd() ~= dir then
+    vim.api.nvim_set_current_dir(dir)
 
-      if config.options.silent_chdir == false then
-        vim.notify("Set CWD to " .. dir .. " using " .. method)
-      end
+    if config.options.silent_chdir == false then
+      vim.notify("Set CWD to " .. dir .. " using " .. method)
     end
-    return true
   end
-
-  return false
+  return true
 end
 
 function M.get_project_root()