fix: oil.close doesn't error when no other buffers exist (#79)

lua/oil/init.lua

@@ -317,7 +317,11 @@ M.close = function()
   -- Deleting the buffer closes all windows with that buffer open, so navigate to a different
   -- buffer first
   local oilbuf = vim.api.nvim_get_current_buf()
-  vim.cmd.bprev()
+  ok = pcall(vim.cmd.bprev)
+  if not ok then
+    -- If `bprev` failed, there are no buffers open so we should create a new one with enew
+    vim.cmd.enew()
+  end
   vim.api.nvim_buf_delete(oilbuf, { force = true })
 end
 

tests/regression_spec.lua

@@ -62,4 +62,13 @@ a.describe("regression tests", function()
     assert.equals(winid, vim.api.nvim_get_current_win())
     assert.equals(bufnr, vim.api.nvim_get_current_buf())
   end)
+
+  -- https://github.com/stevearc/oil.nvim/issues/79
+  a.it("Returns to empty buffer on close", function()
+    oil.open()
+    test_util.wait_for_autocmd("BufReadPost")
+    oil.close()
+    assert.not_equals("oil", vim.bo.filetype)
+    assert.equals("", vim.api.nvim_buf_get_name(0))
+  end)
 end)