From 0a6fb7dcb433c23a8d62097883ffc399474e2809 Mon Sep 17 00:00:00 2001
From: "Vassiliy.Kudryashov" <Vassiliy.Kudryashov@jetbrains.com>
Date: Fri, 20 Jul 2018 11:37:19 +0300
Subject: [PATCH] IDEA-195309 Support Ctrl+Backspace in SpeedSearch

---
 .../src/com/intellij/openapi/keymap/KeymapUtil.java   |  7 +++++++
 .../src/com/intellij/ui/speedSearch/SpeedSearch.java  | 11 ++++++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/platform/platform-api/src/com/intellij/openapi/keymap/KeymapUtil.java b/platform/platform-api/src/com/intellij/openapi/keymap/KeymapUtil.java
index 240193abaf2f..b7f51440ef37 100644
--- a/platform/platform-api/src/com/intellij/openapi/keymap/KeymapUtil.java
+++ b/platform/platform-api/src/com/intellij/openapi/keymap/KeymapUtil.java
@@ -231,6 +231,13 @@ public class KeymapUtil {
     return shortcut == null? "" : getShortcutText(shortcut);
   }
 
+  public static boolean isEventForAction(@NotNull KeyEvent keyEvent, @NotNull String actionId) {
+    for (KeyboardShortcut shortcut : ContainerUtil.findAll(getActiveKeymapShortcuts(actionId).getShortcuts(), KeyboardShortcut.class)) {
+      if (AWTKeyStroke.getAWTKeyStrokeForEvent(keyEvent) == shortcut.getFirstKeyStroke()) return true;
+    }
+    return false;
+  }
+
   @NotNull
   public static String getFirstKeyboardShortcutText(@NotNull AnAction action) {
     return getFirstKeyboardShortcutText(action.getShortcutSet());
diff --git a/platform/platform-api/src/com/intellij/ui/speedSearch/SpeedSearch.java b/platform/platform-api/src/com/intellij/ui/speedSearch/SpeedSearch.java
index fbfadb4e34f2..7edf267f64c3 100644
--- a/platform/platform-api/src/com/intellij/ui/speedSearch/SpeedSearch.java
+++ b/platform/platform-api/src/com/intellij/ui/speedSearch/SpeedSearch.java
@@ -15,6 +15,7 @@
  */
 package com.intellij.ui.speedSearch;
 
+import com.intellij.openapi.keymap.KeymapUtil;
 import com.intellij.openapi.util.TextRange;
 import com.intellij.psi.codeStyle.AllOccurrencesMatcher;
 import com.intellij.psi.codeStyle.FixingLayoutMatcher;
@@ -68,7 +69,15 @@ public class SpeedSearch extends SpeedSearchSupply implements KeyListener {
 
     String old = myString;
     if (e.getID() == KeyEvent.KEY_PRESSED) {
-      if (e.getKeyCode() == KeyEvent.VK_BACK_SPACE) {
+      if (KeymapUtil.isEventForAction(e, "EditorDeleteToWordStart")) {
+        if (isHoldingFilter()) {
+          while (!myString.isEmpty() && !Character.isWhitespace(myString.charAt(myString.length() - 1))) {
+            backspace();
+          }
+          e.consume();
+        }
+      }
+      else if (e.getKeyCode() == KeyEvent.VK_BACK_SPACE) {
         backspace();
         e.consume();
       }