Replace buf_line_count in ui tree expansion with -1

Author: mfussenegger

lua/dap/ui.lua

@@ -216,12 +216,7 @@ function M.new_tree(opts)
     }
     context = vim.tbl_deep_extend('keep', context, extra_context)
     for _, child in pairs(opts.get_children(value)) do
-      local ok, line_count = pcall(api.nvim_buf_line_count, layer.buf)
-      if not ok then
-        -- User might have closed the buffer
-        return
-      end
-      layer.render({child}, with_indent(indent, opts.render_child), context, line_count)
+      layer.render({child}, with_indent(indent, opts.render_child), context, -1)
       if is_expanded(child) then
         render_all_expanded(layer, child, indent + 2)
       end

spec/repl_spec.lua

@@ -135,10 +135,15 @@ describe('dap.repl', function()
     repl.execute("tbl")
     local commands = helpers.wait_for_response(server, "evaluate")
     assert.are.same({"initialize", "launch", "evaluate"}, commands)
-    helpers.wait(function()
-      local lines = api.nvim_buf_get_lines(buf, 0, -1, true)
-      return lines[3] == "table xy"
-    end)
+    helpers.wait(
+      function()
+        local lines = api.nvim_buf_get_lines(buf, 0, -1, true)
+        return lines[3] == "table xy"
+      end,
+      function()
+        return api.nvim_buf_get_lines(buf, 0, -1, true)
+      end
+    )
     local lines = api.nvim_buf_get_lines(buf, 0, -1, true)
     local expected = {
       "",