remove selection made during search when nothing was found

java/java-tests/testSrc/com/intellij/find/FindInEditorTest.java

@@ -60,6 +60,8 @@ public class FindInEditorTest extends LightCodeInsightTestCase {
     initFind();
     myFindModel.setStringToFind("a");
     checkResults();
+    myFindModel.setStringToFind("a2");
+    assertTrue(!myEditor.getSelectionModel().hasSelection());
   }
 
   public void testEmacsLikeFallback() throws Exception {

platform/lang-impl/src/com/intellij/find/impl/livePreview/SearchResults.java

@@ -91,12 +91,13 @@ public class SearchResults implements DocumentListener {
 
   private final Stack<Pair<FindModel, FindResult>> myCursorPositions = new Stack<>();
 
-  private final SelectionManager mySelectionManager = new SelectionManager(this);
+  private final SelectionManager mySelectionManager;
 
   public SearchResults(Editor editor, Project project) {
     myEditor = editor;
     myProject = project;
     myEditor.getDocument().addDocumentListener(this);
+    mySelectionManager = new SelectionManager(this); // important to initialize last for accessing other fields
   }
 
   public void setNotFoundState(boolean isForward) {

platform/lang-impl/src/com/intellij/find/impl/livePreview/SelectionManager.java

@@ -26,10 +26,12 @@ import java.util.List;
 
 public class SelectionManager {
   @NotNull private final SearchResults mySearchResults;
+  private final boolean myHadSelectionInitially;
   private final List<FoldRegion> myRegionsToRestore = new ArrayList<>();
 
   public SelectionManager(@NotNull SearchResults results) {
     mySearchResults = results;
+    myHadSelectionInitially = results.getEditor().getSelectionModel().hasSelection();
   }
 
   public void updateSelection(boolean removePreviousSelection, boolean removeAllPreviousSelections) {
@@ -39,6 +41,7 @@ public class SelectionManager {
     }
     final FindResult cursor = mySearchResults.getCursor();
     if (cursor == null) {
+      if (removePreviousSelection && !myHadSelectionInitially) editor.getSelectionModel().removeSelection();
       return;
     }
     if (mySearchResults.getFindModel().isGlobal()) {