[ruby/reline] Render refreshed prompt just after i-search finished

https://github.com/ruby/reline/commit/0d3188fe34

lib/reline/line_editor.rb

@@ -1614,6 +1614,8 @@ class Reline::LineEditor
         @waiting_proc = nil
         @cursor_max = calculate_width(@line)
         @cursor = @byte_pointer = 0
+        @rerender_all = true
+        @cached_prompt_list = nil
         searcher.resume(-1)
       when "\C-g".ord
         if @is_multiline
@@ -1657,6 +1659,8 @@ class Reline::LineEditor
           @waiting_proc = nil
           @cursor_max = calculate_width(@line)
           @cursor = @byte_pointer = 0
+          @rerender_all = true
+          @cached_prompt_list = nil
           searcher.resume(-1)
         end
       end

test/reline/yamatanooroti/test_rendering.rb

@@ -399,6 +399,17 @@ begin
       EOC
     end
 
+    def test_multiline_incremental_search_finish
+      start_terminal(6, 25, %W{ruby -I#{@pwd}/lib #{@pwd}/bin/multiline_repl}, startup_message: 'Multiline REPL.')
+      write("def a\n  8\nend\ndef b\n  3\nend\C-r8\C-j")
+      close
+      assert_screen(<<~EOC)
+        prompt> def a
+        prompt>   8
+        prompt> end
+      EOC
+    end
+
     def test_binding_for_vi_movement_mode
       write_inputrc <<~LINES
         set editing-mode vi