From 03a35a3f0aaca4c5e49552ee741d34d376522606 Mon Sep 17 00:00:00 2001
From: Alexey Kudravtsev <cdr@intellij.com>
Date: Wed, 24 Aug 2016 12:42:40 +0300
Subject: [PATCH] forgot to check length()

---
 .../openapi/diff/impl/string/DiffString.java     | 16 ----------------
 .../util/text/CharArrayCharSequence.java         |  2 +-
 2 files changed, 1 insertion(+), 17 deletions(-)

diff --git a/platform/util/src/com/intellij/openapi/diff/impl/string/DiffString.java b/platform/util/src/com/intellij/openapi/diff/impl/string/DiffString.java
index 9906803a882c..8a42bb7414da 100644
--- a/platform/util/src/com/intellij/openapi/diff/impl/string/DiffString.java
+++ b/platform/util/src/com/intellij/openapi/diff/impl/string/DiffString.java
@@ -93,22 +93,6 @@ public class DiffString extends CharArrayCharSequence {
     System.arraycopy(myChars, myStart, dst, start, length());
   }
 
-  @Override
-  public boolean equals(@Nullable Object o) {
-    if (this == o) return true;
-    if (o == null || getClass() != o.getClass()) return false;
-
-    DiffString that = (DiffString)o;
-
-    if (length() != that.length()) return false;
-    if (hashCode() != that.hashCode()) return false;
-    for (int i = 0; i < length(); i++) {
-      if (data(i) != that.data(i)) return false;
-    }
-
-    return true;
-  }
-
   @Nullable
   public static DiffString concatenateNullable(@Nullable DiffString s1, @Nullable DiffString s2) {
     if (s1 == null || s2 == null) {
diff --git a/platform/util/src/com/intellij/util/text/CharArrayCharSequence.java b/platform/util/src/com/intellij/util/text/CharArrayCharSequence.java
index fbb840685302..71824102c7bb 100644
--- a/platform/util/src/com/intellij/util/text/CharArrayCharSequence.java
+++ b/platform/util/src/com/intellij/util/text/CharArrayCharSequence.java
@@ -78,7 +78,7 @@ public class CharArrayCharSequence implements CharSequenceBackedByArray, CharSeq
     if (this == anObject) {
       return true;
     }
-    if (anObject == null || getClass() != anObject.getClass()) {
+    if (anObject == null || getClass() != anObject.getClass() || length() != ((CharSequence)anObject).length()) {
       return false;
     }
     return CharArrayUtil.regionMatches(myChars, myStart, myEnd, (CharSequence)anObject);