Fix netrw - mapping when in a buffer with no name/file

lua/netrw.lua

@@ -10,18 +10,25 @@ end
 vim.keymap.set('n', '-', function()
   -- Get the filename before invoking netrw
   local filename = vim.fn.expand('%:t')
+  local directory = vim.fn.expand('%:hp')
+
+  if directory == '' then
+    directory = vim.fn.getcwd()
+  end
 
   -- Invoke netrw on the directory containing the current file
-  vim.fn.execute(string.format("edit %s", vim.fn.expand('%:hp')))
+  vim.fn.execute(string.format("edit %s", directory))
 
-  -- In the netrw buffer, move the cursor to the first character of filename
+  if filename ~= '' then
-  local buffer = vim.api.nvim_get_current_buf()
+    -- In the netrw buffer, move the cursor to the first character of filename
-  local lines = vim.api.nvim_buf_get_lines(buffer, 0, -1, true)
+    local buffer = vim.api.nvim_get_current_buf()
-  for row, content in ipairs(lines) do
+    local lines = vim.api.nvim_buf_get_lines(buffer, 0, -1, true)
-    local column = string.find(content, filename)
+    for row, content in ipairs(lines) do
-    if column then
+      local column = string.find(content, filename)
-      vim.api.nvim_win_set_cursor(0, { row, column - 1 })
+      if column then
-      break
+        vim.api.nvim_win_set_cursor(0, { row, column - 1 })
+        break
+      end
     end
   end
 end)