Merge pull request #34090 from yochem/exrc-search-parent

feat(exrc): unset 'exrc' to stop searching parent directories

runtime/lua/vim/_defaults.lua

@@ -928,23 +928,31 @@ do
 
   vim.api.nvim_create_autocmd('VimEnter', {
     group = vim.api.nvim_create_augroup('nvim.find_exrc', {}),
-    desc = 'Find project-local configuration',
+    desc = 'Find exrc files in parent directories',
     callback = function()
-      if vim.o.exrc then
-        local files = vim.fs.find(
-          { '.nvim.lua', '.nvimrc', '.exrc' },
-          { type = 'file', upward = true, limit = math.huge }
-        )
-        for _, file in ipairs(files) do
-          local trusted = vim.secure.read(file) --[[@as string|nil]]
-          if trusted then
-            if vim.endswith(file, '.lua') then
-              loadstring(trusted)()
-            else
-              vim.api.nvim_exec2(trusted, {})
-            end
+      if not vim.o.exrc then
+        return
+      end
+      local files = vim.fs.find({ '.nvim.lua', '.nvimrc', '.exrc' }, {
+        type = 'file',
+        upward = true,
+        limit = math.huge,
+        -- exrc in cwd already handled from C, thus start in parent directory.
+        path = vim.fs.dirname(vim.uv.cwd()),
+      })
+      for _, file in ipairs(files) do
+        local trusted = vim.secure.read(file) --[[@as string|nil]]
+        if trusted then
+          if vim.endswith(file, '.lua') then
+            loadstring(trusted)()
+          else
+            vim.api.nvim_exec2(trusted, {})
           end
         end
+        -- If the user unset 'exrc' in the current exrc then stop searching
+        if not vim.o.exrc then
+          return
+        end
       end
     end,
   })

runtime/lua/vim/_meta/options.lua

@@ -2080,6 +2080,9 @@ vim.bo.et = vim.bo.expandtab
 --- directories (ordered upwards), if the files are in the `trust` list.
 --- Use `:trust` to manage trusted files. See also `vim.secure.read()`.
 ---
+--- Unset 'exrc' to stop further searching of 'exrc' files in parent
+--- directories, similar to `editorconfig.root`.
+---
 --- Compare 'exrc' to `editorconfig`:
 --- - 'exrc' can execute any code; editorconfig only specifies settings.
 --- - 'exrc' is Nvim-specific; editorconfig works in other editors.