From 1a7ced34a7d65ffa40c3e8d60f79caa2d49859a4 Mon Sep 17 00:00:00 2001
From: daboe01 <daboe01@googlemail.com>
Date: Thu, 13 Jun 2019 16:17:52 +0200
Subject: [PATCH] Fixed: smart copy/paste cycle was leaving an additional
 whitespace on the LHS (#2776)

---
 AppKit/CPTextView/CPTextView.j | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/AppKit/CPTextView/CPTextView.j b/AppKit/CPTextView/CPTextView.j
index 5e7be1de1..c71544bf3 100644
--- a/AppKit/CPTextView/CPTextView.j
+++ b/AppKit/CPTextView/CPTextView.j
@@ -467,12 +467,20 @@ var kDelegateRespondsTo_textShouldBeginEditing
 
     var shouldUseSmartPasting = [self _shouldUseSmartPasting];
 
-    if (shouldUseSmartPasting && _selectionRange.location > 0)
+    if (shouldUseSmartPasting)
     {
-        if (!_isWhitespaceCharacter([[_textStorage string] characterAtIndex:_selectionRange.location - 1]) &&
-            _selectionRange.location != [_layoutManager numberOfCharacters])
+        if (_isWhitespaceCharacter([[stringForPasting string] characterAtIndex:0]))
         {
-            [self insertText:" "];
+            if (_selectionRange.location == 0 ||
+                _isWhitespaceCharacter([[_textStorage string] characterAtIndex:_selectionRange.location - 1]) &&
+                _selectionRange.location != [_layoutManager numberOfCharacters])
+                [stringForPasting deleteCharactersInRange:CPMakeRange(0, 1)];
+        }
+        else
+        {
+            if (_selectionRange.location > 0 &
+                !_isWhitespaceCharacter([[_textStorage string] characterAtIndex:_selectionRange.location - 1]))
+                [self insertText:" "];
         }
     }