From 6076bbb554e5d1c58f8592070107aea2d81d7ede Mon Sep 17 00:00:00 2001
From: daboe01 <daboe01@googlemail.com>
Date: Fri, 2 Sep 2016 19:50:57 +0200
Subject: [PATCH] Fixed: CPRange was not copied before altering its content

---
 AppKit/CPTextView/CPTextStorage.j | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/AppKit/CPTextView/CPTextStorage.j b/AppKit/CPTextView/CPTextStorage.j
index 229610dc6..65a71cf1a 100644
--- a/AppKit/CPTextView/CPTextStorage.j
+++ b/AppKit/CPTextView/CPTextStorage.j
@@ -186,24 +186,26 @@ var CPTextStorageDelegate_textStorageWillProcessEditing_ = 1 << 1,
 
 - (void)edited:(unsigned)editedMask range:(CPRange)aRange changeInLength:(int)lengthChange
 {
-    if (_editCount == 0) /* used outside a beginEditing/endEditing */
+    var copyRange = CPMakeRangeCopy(aRange);
+
+    if (_editCount == 0) // used outside a beginEditing/endEditing
     {
         _editedMask = editedMask;
         _changeInLength = lengthChange;
-        aRange.length += lengthChange;
-        _editedRange = aRange;
+        copyRange.length += lengthChange;
+        _editedRange = copyRange;
         [self processEditing];
     }
     else
     {
         _editedMask |= editedMask;
         _changeInLength += lengthChange;
-        aRange.length += lengthChange;
+        copyRange.length += lengthChange;
 
-        if (_editedRange.location === CPNotFound)
-            _editedRange = aRange;
+        if (_editedRange.location == CPNotFound)
+            _editedRange = copyRange;
         else
-            _editedRange = CPUnionRange(_editedRange,aRange);
+            _editedRange = CPUnionRange(_editedRange,copyRange);
     }
 }